Traxxas TRX-4 gearbox, filled with transmission oil
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- čas přidán 30. 07. 2024
- WORLD PREMIERE: Traxxas TRX-4 gearbox runs with automotive gearbox oil. I made it work! This thing now uses Castrol Classic EP90!
I went totally overboard, with this mod: The gearbox of my TRX-4 now contains genuine automotive-grade, EP 90 transmission oil!
How is that, for scale detail!?
Disclaimer: this mod might have been done before, I just have never seen it anywhere. So this truly could be the World's first ever TRX-4, to run on proper transmission oil! I like to think so, anyway.
Thank you for watching!
Would you like your rig to be feature, in one of my shows? Send your best crawler pics here: subscribersrigshowoff@gmail.com
Best of luck!
Bio: I am a professional mechanic, focused on classic cars and bikes. I also write classic car reviews for an automotive blog, and provide "how to" type videos, to help the mechanically minded DIY'ers take care of their cars and bikes.
Follow me on Instagram / mcevoy_motorcycles - Auta a dopravní prostředky
Hi all, thank you for your interest in this insane mod. It turns out that legally speaking, this modification is in fact called 'reverse engineering'. I had no idea, and my aim is not to infringe any laws by doing what I did. It was the technical challenge that I set myself that got me to this point, and nothing else. I have a tendency to get ahead of myself, and forget that the world is such a complicated place. If I start making and selling these, I would end up getting sued by the manufacturer of the gearbox which I modified. So as it is, I won't be manufacturing these anytime soon, even at a small scale. I would be crushed, shredded and spat out as offal by a lawsuit. I tried to reach out to the manufacturer, who never got back to me. I could develop the case from scratch, but I would have to invest insane amounts of money and time, both of which I have little to none. It is a huge risk which I simply cannot afford to take, despite the interest in this mod. So do with it what you will, and view this video with its entertainment value in mind. I have been highly surprised by the level of interest and appreciation for what I have done. I did it purely out of curiosity, and for the sake of accomplishing something different from the usual mechanical stuff that I do for a living. Maybe instead of getting sued, someone would actually reach out to me one day and offer some sort of collaboration to get this out to you. Dreams are what keep us alive after all, right? At any rate, I am chuffed to know that I am probably the only person in the world, running a TRX-4 with a gearbox filled with automotive grade gearbox oil... Thanks again, people. Of all the crazy things that I did so far, this project is definitely my number one favourite.
Hell ya u first man on moon and world tiny transmission oil filled. Wow
Bummer, was really looking forward to getting one of these :) Hey wait a minute...other people have made mods for their cars. Why can't someone pay you to modify RC cars? If we can do it for real cars, as it happens everyday see race cars, drag cars and modified street cars. But your not allowed to do it to a Traxxas TRX 4?????? Of course you can modify a gear box, you just can't claim it as yours as it is a TRX$ sorry 4 gear box. Why can't you sell it as a modified TRX$ sorry 4 gear box again????? You can do it, you just don't want to, and that's ok too ;)
@@jeffsrcchannel2191 Thanks Jeff. It turns out that this world is even more complicated than I thought. Imagine that: coming forth with a worthwhile evolution of a product, only to end up in court... Sorry for the disappointment. :( What I could do is to receive your gearbox, I could then modify it, and send it back to you. Then I could charge the transformation as one would with a modified street car, as you say. I must ask my lawyer about that...
@@gmcevoy Sorry, it just irks me when Kevin bloody Talbert can by an entire engine that can go into a monster truck based solely of a Chev engine, but only the block remains, all the rest is an add on, but you, a smart guy from Britain can't enhance a shitty Traxxas gear box???? There is an entire industry set up just to "upgrade" a V8. Is it time to boycott Traxxas??? I think I will. Anyway, keep calm and mod on :) czcams.com/video/eYk7Ac5kIA4/video.html&ab_channel=KevinTalbot
@@jeffsrcchannel2191 Agreed... That guy is a nutcase. This being said, parts required to upgrade an engine are usually engineered from scratch, made to fit instead of original parts. In my case here, I can't afford to do that, so I have to reverse engineer an existing device which is patented. I was terribly disappointed to find out that it is illegal. I did reach out to the manufacturer to talk about the design, but they never replied. Must have filtered through to their spam folder or something. I would really like to be able to get this gearbox out there and make it available to everyone who wants one... I do know of a company who could help with the design, maybe I'll go see them and ask for a quote to make these from scratch. I am afraid it would be prohibitively expensive, but you never know...
So smooth, absolutely amazing!
Thank you for saying so! I am quite happy about the result myself. It is much quieter as well.
Fellas, thank you so much for the positive feedback my project! I was not expecting such high interest. I am currently developing this insane mod, to take it to the next level. "Wait, what?". Yep, there is room for improvement, and I'm on it as you are reading this! More features and more madness, coming up! Stay tuned!
Can't place your accent. Canadian?
Years later I'm baaaaack. Lol😂
Excellent work!
Than you for saying so! You appreciation is much appreciated. :)
Very cool. Awesome job
Thank you! It was huge fun to make. I am currently testing another version of this madness. Stick around, as I will be uploading an update in a few weeks. Thanks for stopping by, in any case! :-)
Brilliant i cant believe just how quiet that box is and being able to drain and refill it is just awesome. now some may say this is ott but it is a vast improvement on the original i hope to you recorded how you pulled off this feat of genius so i can see how its done. the BRUTE is famous now great video geoff thumbs up
Hi Darren! Thank you for your support! Definitely, OTT. But I had great fun figuring it out, and especially, making it work! I did indeed record a detailed view of the transformations, but deemed that it would make too long a video. Maybe at a later date, I will edit a "how it works" kind of video about the gearbox, generally speaking. It is a fascinating little piece of machinery, truly. I will try to find some time now, to fit this new gearbox on the chassis, and see how it works. I can't wait! :) And yes, your Brute is definitely up there! You are the first to be featured, on my channel. Congratulations!
Thanks again, Darren.
yes absolutely get it fitted on the truck and give us a demo of it, i have to say that it's damn impressive that you have made this work well done
Thank you so much! I surprise myself too, sometimes... It took me so long, I almost scrapped the project entirely... I am glad that I have found a way. :) It is going to be great.
Hi Mr McEvoy! Good idea and a mighty step in the right direktion for a longer livetime for Transmission-parts in RC-Cars! And the thick oil make the Gearbox silence(Sorry for my bad english!) That noisy "Click, Click, Click" from shafts, bolts and gears are gone, i think... The Challange is to seal the driveshaft-inns and -outs... SAE 80W is the Standart - Gearbox-Oil in most of all real Cars. My Axial Gladiator makes the same "Click, Click, Click". Big Slash/Clearance in all moving parts. Same Problem! 😎 I think, you are right! Greatings from Germany
Dear Mr Trilck, Thank you for your kind words! My turn to make some efforts in German.
Das Getriebe ist jetzt in einer zweiten Version, die derzeit getestet wird. Ich habe den ersten Prototyp, der ein Verschleißmuster aufweist, auseinander genommen und er ist gut gealtert. Diese Modifikation verbessert definitiv die Langlebigkeit. Die Abtriebswellen sind jetzt ordnungsgemäß abgedichtet und es gibt sogar eine Ölpumpe, um die Flüssigkeit zu zirkulieren (aber das ist meine eigene extravagante Ergänzung. :-)). Ich habe jedoch von EP90 zu ATF Dexron III gewechselt. EP90 ist in dieser Größenordnung zu dick und erzeugt einen hohen Innenwiderstand, der die Fahrzeit und die Motorbelastung dramatisch beeinflusst. ATF funktioniert gut in einem Auto-Schaltgetriebe in voller Größe, wie bei vielen BMW und einigen Land Rover. Ich werde später in dieser Woche ein Vorschau-Video und hoffentlich in ein paar Wochen ein vollständiges Update veröffentlichen.
Nochmals vielen Dank fürs Zuschauen und dafür, dass Sie sich die Zeit genommen haben, Kommentare abzugeben. Wenn Sie ein Metallgetriebe an Ihrem Gladiator haben, könnte ich auch dafür eine Ölversion herstellen! Würde dir das gefallen? Es wird sicherlich für immer dauern. :-)
Entschuldigung für mein schlechtes Deutsch und nochmals vielen Dank!
I'm honestly temped to give this a shot, I think we both could be slightly loosing the plot but it's interesting and fun regardless haha. Your a true genius the first ever to scale replica gearbox/engine. I say engine due to it containing oil now, I'm eager to find out how the progress is going. And to know if you've ran this in your trx4. Keep us posted
Version 2.0 is just about ready. Still a bit of machining to carry out, and the oil pump to hook up. Lost the plot a while ago, I think... Shoot an email out to me at info@mcevoy.be. I have something to show you.
@@gmcevoy I've sent you an email. I wasn't sure to add the extra full stop.. on the end of the email. Hope to chat when your free to do so
That's awesome man.
Thank you for saying so! It was a fun challenge to carry out. :-)
@@gmcevoy if love to have something like that. My trx4 sounds like marbles in a blender.
@@GoProseph That does not sound good, for sure. :) Have you taken it apart, to see what could be wrong? This gearbox is smooth as silk, it really is fantastic. And it even leaks a bit of oil, just like a real Land Rover would! Hahaha
@@gmcevoy hahaha. That's awesome. I have two trx-4's, I bought one 2nd hand and it needs a lot of work. I pulled the front axel appart last night and the portal input gears were stripped bad. Metal everywhere. I'm scared to open the gearbox at this point. Haha. But I guess I'll have to. BTW I can't find that Castrol spheerol that you use anywhere in the US. What are your thoughts on white lithium greace as lubricant in the portals difs and gearbox. (That's what I have but I don't know if it's ideal)
@@GoProseph Wow, I had no idea the gears could strip. They look sturdy enough, to me. It must have been through a lot! Mine has the usual, slight traces of wear. Then again, I put my own TRX-4 through its paces, but maintain it quite a lot. "Overkill", most definitely, but it is just so much fun. If you haven't already, check out my "One year later" tech video, where I dismantle a set of portals, pretty much after a year of use and abuse.
If you can't find the same grease that I use, then look for a general 'Extreme Pressure' grade grease (EPL generally speaking, stands for 'extreme pressure lubricant'). Choose one that is rather fluid, rather than pasty. Think of slightly microwaved chocolate spread, kind of texture. Even if you don't seal your axles, portals and gearbox like me (like a madman? :) )it should be thick enough to stay contained within the cases.
Interesting 👍
Thank you Alex!
Great work! I’m very interested . Any update on the production?
Thank you for your encouragement! The project is currently undergoing further development, but has been put on hold for now. I have to focus on my daytime job for the moment (I am a self-employed classic car mechanic). As soon as I can afford some free time, I intend to put the developed system to the test, and do a call-out to get some orders signed. Then, I can focus on producing a limited run of 10 or 20 units to start with. We will see where that takes us...
Stick around! I can't say exactly when I will be able to do this, hopefully before this Christmas. I cannot make any promises however...
Many thanks for your high interest! Its thanks to people like you that this project is being developed further. I did this just for kicks, and I am astounded to find such positive response from the public. It's amazing!
if you drill through the mount hole on the screw that goes through the cross member like the plastic case does you could drain the oil in the truck too just remove that screw even more scale. you can get gear oil in the axles going the same route
I had already thought of that, but oil will most likely seep out through there. A dedicated oil drain plug should be drilled and tapped, and sealed with either a rubber or a copper washer. Just like the real deal.
I want one! I understand you are working on it. Any progress? How long until these bad Bois are available for purchase?
Hi there! I am currently field testing an updated version of this insanity, and I am happy to know that you want to be a part of it!
I will be shooting an update video shortly, and depending on how well it is received, I will be making a small batch of them, and see how it goes from there. Stay tuned!
Duuuddeee cant wait for availability
Awesome! I am currently looking into a way to get a batch of 10 off the mill somehow. Stay tuned for an update in the coming weeks!
@@gmcevoy wow. Any idea how much for one? Im highly interested but i only make so much, lol.
@@gmcevoy Also could you add links in the description for the different grease and fluid you use.. possibly make a video describing them and why whats used for what. It would be super helpfull. I wouldnt know where too start. Diff fluid, gear grease, ect. I have lithium grease in my gears but ill say its not this quiet or smooth...
Excellent idea! I will try to make a video about that as soon as I can. No idea for pricing of the gearbox just yet. The more I can make, the lower the price will be. I might have worked out a way for people who are genuinely interested to be able to secure orders. I will talk about that in the video. See you soon! :-)
i would be curious about the long term experience with it and after first servicing for sure
I am working on version 2.0, so took this one out a few months ago. I took it apart, and it was like brand new. I must have the footage somewhere, but I keep getting side-tracked by my daytime job. lol. I'll post an update, eventually.
Lol great video
Thank you for your kind words! Much appreciated!
Not worried of petroleum based products damaging plastics? I recently lubed my diff and portal with cheap marine grease seen people recomend but thinking maybe they had silicone marine grease .. what you think i just did it its brand new and dont feel like doing it over lol
Not worried at all. The after-market gearbox case I have transformed and all the internals are made of aluminium alloy and steel. Just like the real thing, pretty much. :-) Initially, I had used Castrol Spheerol in all portals and gearbox, with no issues whatsoever. All depends on the chemical composition of the grease that you used. As I mentioned in another reply, you might want to check the compatibility of your product with plastic, thanks to the product data sheet.
@@gmcevoy sounds good
@@gmcevoy no info about plastic compatible or not but thanks!!
I’m beginning my crazy TRX4 build and im considering oil in the gearbox. Obviously I’m going to seal the case together but I’m uncertain about the bearings and if oil is going to leak out. What kind of seals are you running? Or I wonder if I used a thicker oil if there would be a better chance of no leak. Hmm.
Oil is definitely going to leak. I had to machine the output shafts with a recess, so they can accommodate an o-ring. Even with EP90 gearbox fluid it would still leak. Right now I am testing a version 2.0 with miniature shaft seals. They are crazy expensive, but it works better, and the gearbox case needs machining instead. I am running ATF Dexron III now, which generates less internal drag. It also has a circulation pump and an oil cooler. It's nuts. I haven't done a video about it yet. The EP90 was just too thick. It worked really well, but you could feel the motor working much harder than it is designed for. The bearings couldn't be happier though, as they bathe in oil now. This modification, although overkill and difficult to achieve without a mill and a lathe, makes the gearbox literally maintenance-free. Have fun with your experiments! It is a great way to learn new skills, fail, fail again, find a solution and succeed. :-)
@@gmcevoy for sure! Do you think you would ever post a new vid about it? Maybe even privately sell a few? I’d gladly buy. Lol.
@@gmcevoy also. There is a smaller channel that I’m watching atm. He has 8 videos documenting himself use oil in the differentials and portal housings. He actually used silicone grease and it seemed to work. Just look up TRX4 oil in portals and axles.
@@383_mtb7 I would like to find the time to post an update, yes. I have a dirty habit called "daytime job", which gets in the way. Hahaha. Sometime though...
I have been asked to privately sell, but I have sought legal advice, and it would be the death of me to do so. The fact is that I have transformed an already existing gearbox. To do so for my own private use is my right, but to sell this would be considered reverse engineering, and I would legally get f**ked up in no time for doing so. I would love to engineer my own gearbox from scratch, for which I could in turn file a patent. Sadly this would set me back a few grand, which I don't have lying around sadly. It is a financial risk I simply cannot afford to take... Most likely, someone who will have watched this very video I posted will have the resources to drop a patent and f**k me nonetheless by taking credit for it... If it comes to that, just remember you saw it here first. :-)
@@gmcevoy awesome. Keep it up man. I’ll be waiting patiently for that post on the mark two. Lol. In the meantime I’ll figure er out.
Nice! Now, would you make a liquid cooling system for ESC?
I already have such a project on the drawing board, yes. It is going to take a while, as I can only afford to do this kind of stuff during my free time, which is scarce. I can tell you that it is going to be well worth waiting for. It will be used on the original ESC, but if you have a specific application in mind, feel free to let me know. :) Stay tuned!
@@gmcevoy Well yes, actually, I run a brushless velinenon on 3s with tracks. Stock esc was way too slow with tracks and with summer months ahead I'm sure the higher RPM and drag of the tracks will become an issue. Thanks.
@@thomashathaway4129 I'll see if I can get that done. Not making any promises, as I am already working on something similar. I could build a custom cooling system for you, but I couldn't do it for free, unfortunately. :) Stay tuned!
i see you shifting while its moving. the manual says thats a no no. wont that hurt the internals?
As long as it isn't spinning flat-out, it should be okay. This was just for testing, so it happened only a couple of times. Besides, the oil within is genuine gearbox oil engineered to withstand extreme pressure, (hence EP in the name). If it can handle the load of a two tonne car, I think this little fella will do just fine. 😄
When I am out and about, I lift off the throttle before shifting, and only do so at moderate speed. I wait until I have slowed down enough to downshift, especially. Going up doesn't really matter, as long as the transmission is not under load (throttle lift-off). It is mainly due to the fact that the shift dogs have slots to push into. I recently rebuilt the gearbox of a 1946 Harley Davidson WLC, and it was exactly the same system. The dogs had worn out so bad that it would be difficult to shift, and sometimes a gear would jump out during coasting... This being said, the internals on the TRX4 are beautifully well engineered. They can handle much abuse, even though it is highly recommended to follow the manufacturers guidelines. Thank you for pointing this out, and for reminding everybody out there to cherish their rigs and take good care of them.
@@gmcevoy its really cool idea and that you are running it that way. what i and wondering the most is the long term on the seals and if u had had any issues since, ty for reply
How do I get me one ?! I want it haha
hi there have you ever thought about getting rid of the play in the shifter. meaning when the vehicle is stationery you can move it back and forth without the gears moving just the shift dog hub moving back an forth and then only making contact to the gear. please can you get back to me I want to know if you can machine a new shift dog hub from aluminum or even steel. with larger contact splines. I really don't think 3d printing will work because of all the forces involved
Hi there. I did think of doing that at some point, but got side-tracked and let it be. I will put that on the drawing board once more, and see if I can integrate that in the design. This being said, I believe there is a good reason for the device being the way that it is: it allows a certain engagement of the dog while gears are turning, whereas with tighter tolerances, they won't mesh as easily, and wear rather quickly, generating metal shavings inside the gearbox. The gears would have to be changed either from a standstill or while driving at a very slow pace, with a tighter tolerance. I will look into this nevertheless.
@@gmcevoy I completely agree with you. you won't be able to shift while in motion. The current shift dog tends to wear out over time. making the tolerances even worse. If you are worried about metal grinding why don't you try making it out of a solid ingot Polycarbonate nylon there are other plastics that can also handle the forces. aluminum won't work for me but I believe it will work for you with your oil filled transmission.
@@jacquesthecrafter7842 Worth thinking about indeed. I'll add that to the "to do" list. :-)
@@gmcevoy thank you i have a lot of respect for you for what you did to the transmission already
@@jacquesthecrafter7842 Wow, thank you so much. Your recognition is highly appreciated. Speak soon I hope! :-)
Let me know if you start selling one. I am definitely gonna buy
Will do. Looking into making a short production run, to reduce costs...
i have the same idea thinking about using lucas
Anything goes! Go wild, Raffy! Have fun with the mod, and enjoy the benefits of having an oil-filled transmission!
What a fantastic idea, how is the project going? I would love to put one of them in my trx4.. mine can wake the dead as it stands haha
Thanks, Bri. I have tried and tested a version 2.0, which is much better than this one. This being said, I have my back against the wall, to be honest. So many people seem interested, and yet I have no means to produce to a larger scale than say 10 units. Investment is the wall on which my back is against, so I have been in touch with a company who might help in driving production costs down. However, this case study is going to start costing some dough, and I have other investments to cater to. This is a side-project, and my main business still has top priority, so it is a tough nut to crack. I probably have to find a bank which will agree to follow me in this venture, but it's a huge risk that I am not sure that I can afford to take... That's where I am at. Otherwise, this gearbox is the dog's nuts. Smooth, quiet, and oh so scale! Never will you see anything like it, until someone with adequate funds finds this video, develops my idea, lays down a patent and turns it into a gold mine. Always remember that you saw it here first, okay? :-) It sucks to have to scrape around to be able to do things... I have already had somebody snooping around for insider info. It won't be long before something like this hits the market. I will be gutted when it does... I am no businessman, business shark or whatever. Just a dude with 'outside the box' ideas... Thank you for considering the installation of one of these in your rig! I hope to be able to send one your way, one day...
@@gmcevoy thankyou for the reply, it's great that you took the time to do so. Can't you patient it anyway untill such times as you can get backing? It's still yours in my eyes mate :) and yea one I will have one of these in my truck it's such an amazing bit of genius!! :)
@@bri_van_wild6455 It's the least I could do. I love to stay in touch with my viewers, subscribers and patrons alike. Thank you for showing interest in what I do. I certainly hope to be able to produce a limited run at least. I am just afraid that somebody else will steal the idea and market it... It will cost less to make more, if that makes any sense. I could make 10 gearboxes to begin with, but they would be more expensive than making 1000. I can't afford that, so the 10 I can make would be crazy expensive (over 300€). From the few 'interested' people I have had exchanges with, none of those would pay such an amount, even considering the amount of work involved. So unless you are prepared to fork out for a numbered, signed, authentic low-production gearbox made by myself, it will indeed have to wait. :-)
Thanks again for showing your interest, it is highly appreciated!
I agree, you are completely bonkers, beyond redemption !
Hahaha! I thought so!
"Hello, thank you for the video. I've also been considering this, but I first wanted to learn about the potential benefits. In the past, we did something similar for stadium trucks, but with thicker oil in the differentials to reduce freewheeling, which I believe is the correct term. This was also done to reduce noise when braking and accelerating. For the crawler, I'm only interested in knowing if it can reduce noise from the transmission or if the noise is more likely to come from the pinion and gears. It's also important to understand how different thicknesses of oil will affect performance. I'm concerned that the higher resistance in the transmission could possibly increase the torsion of the vehicle, as in a belt mod. I would be very happy about a 1:1 comparison with the original gearbox.
Hello Lukas, I should do a comparison video, but the benefits are huge, over stock fitment. Much quieter operation, easy to service and will definitely improve longevity. It runs ATF now, as the EP90 was indeed too thick, and created a lot of drag affecting motor load negatively. Since the change, I needed to make some adaptations, so I added a cooling system with an electric pump to circulate the oil and cool it. Works much better now. I will be creating a new RC channel, so watch this space.
@@gmcevoy Thank you very much for your response, that sounds very promising. I appreciate someone taking on this topic. I will definitely stay tuned.
@@lukaskolarik130 Many thanks to you for your interest in something so technically advanced for such an RC car. :-) Speak soon I hope!
If you start selling these I would buy one.
Wow! Really? I will look into producing a limited run, because you are not the first to say so... Stay tuned, Chris.
@@gmcevoy So are you selling them?
@@tomv3361 Not just yet, no. A prototype is currently being tested prior to entering production. It still has some issues which need solving. Stay tuned for an update soon.
@@gmcevoy ok
Anytime
I can't get hyperlube, on my side of the Pond. At least, I haven't found any retailers... There are similar additives here though, within the Castrol, Bardahl or Shell range of products...
is that an alloy RC Lions box?
Actually, I can't remember where it is from...
You should try to put oil in the portal gears
I'm on it! Hahaha
Any news on progress? Very interested in obtaining one of these 👌🏻
Hi Mark. There is good news indeed! I might have found a way to produce these at a more reasonable cost. My prototype here was quite expensive to make... I am having another gearbox case manufacturer send me one of their products, which I will transform and put to the test as well. Stay tuned!
Exciting news mate 👍🏻 look forward to seeing the outcome good luck
Yessir me too
@@sprather84 I'm on it! :-) Watch this space!
Recently looking to replace the transmission on my trx4 and just saw this vid. I’d be highly interested if you start making these for a reasonable price.
Hello Geoffrey, this is VERY interesting, do you have any plans selling these, i would be very interested :)
Hi Chris! Thanks for your inquiry. I am currently looking into it, yes. Interest is phenomenal, I would be quite numb not to consider making a few of these. Watch this space! :-)
@@gmcevoy i will! :) thanks for you rprompt reply! Cheers
I’m geeking out over this. Where do I swipe my card? $$$$$$&
Great! I must get cracking then! Pity my day time job gets in the way of this madness. I will be producing a limited run of these some time, as interest is growing. I must find somebody to chip in with me however, as these things aren't cheap to make. Stay tuned! You are on my list!
did you tried without adding any sealing?
Hi there! No, I haven't. I don't think it would even be worth trying, as the oil would go out from every seam and orifice. I have been testing a version 2.0 with better results, but there is still room for improvement. I am working on it. :-) Thank you for watching!
@@gmcevoycan you post an update video!? I'm considering a gearbox upgrade but I don't want to buy a metal gearbox, shims and other parts to work on it if you are going to be selling these type of things
@@solosandwich I really must get cracking on that, yes. Stay tuned, and thank you for your patience!
@@gmcevoyI'd much rather buy one from you. You seem to have this sort of thing on lock and know what you are doing in depth. I'd suspect you also know how to eliminate any clicking sounds with shims, bearings, ect... aside from the fact its filled with oil. That's another reason I why iv been holding out for your progress and updates.
@@solosandwich I will keep you in the loop. :-)
My way is that i drill the hole on top of transmission plastic and push the oil in from there then cover back with rubber nut. Simple
Well played, Kevin. Simply beautiful. You could even drill a second hole on the other end to act as a vent, and make filling easier. The gearbox would be completely filled when grease oozes out the other end of the filler hole.
Hello
I follow you from Italy, and I really like your idea of replacing fat with oil
from how I read you are going to also put an oil pump to circulate the oil in the gearbox
I'm going to try it too, as a personal experience nothing more,
I still have a doubt whether to place an electric oil pump, or to build a gear pump connected to the main shaft, at the output, the 5 mm hole one where a momentary pin is inserted to calibrate the clutch
I also give you an idea
to remove a large amount of oil from the gearbox and remove any leaks, I thought of taking an example from aircraft engines, they work in dry sump, the greater amount of oil is not inside the engine but in a separate container
Hi Jean Claude! I have had the idea of making an external oil pump driven by the front of the main shaft of the gearbox, but I don't have the machining skills. Instead I bought a micro-pump, wired to an external BEC to power it up. I added a cooling system for the motor too. I might make a video about it if interest is high enough.
Have fun with your experiment! It is a steep learning curve, and a fun one too. Dry sump is indeed an interesting way to lubricate, and it would be quite a challenge to get that right on this gearbox! I probably will never have enough time to work on such an awesome project, but would be great to hear about it whenever you make it work!
Stay in touch, and thank you for your following!
@@gmcevoy Thanks for the reply
but i like challenges and i will build the oil pump and it will be connected where i told you besides if i was able to design and build this www.elicottero-ulm.it you want me to stop a simple oil pump
@@jeanclaudecusa6321 Ahaha! That's awesome! Of course, if you can design and build a helicopter, I don't think this little gearbox will pose any issues. That's great! I wish I had your set of skills. Then I could have designed the gearbox from the ground up with little syncro rings, helical cut gears and the lot, just like the real thing. Have fun with your build, and do please let me know how it turns out. Take care, and speak soon I hope! :-)
How do I get one I'll pay you
Hi Andrew! So glad to see that you are genuinely interested! I am still trying to figure out a few things, and will be posting an update video in a few days. I will pin a link to it in the comment section of this video. Stay tuned! :-)
Could I get one of those?
Well ah, I guess I could make one for you. I would have to make a detailed quote, in order to set a realistic price on it. Hard to say right now, as I just threw money in this prototype like there was no tomorrow... I suppose that if I had a firm order for 10 or more units, it would drastically reduce costs. I will look into that. If you have something else in mind, fire away, I am all ears.
@@gmcevoy Were you able to get your order of 10? or maybe a realistic price?
Should of been designed this way from the start :)
Agreed! Thank you Jeff! :-)
@@gmcevoy Next step, shut up and take my money :)
@@jeffparryncc1701 Hahaha! I am working on that. Still has a few teething problems, but I will be posting an update soon. Stay tuned! :-D
I've often thought lucas or hyperlube would be good for this
:-) To be fully honest, EP 90 is a little too thick, even if it works outstandingly well. It generates quite a lot of drag, and definitely works the motor much harder. On the other hand, it is much smoother to operate, and considerably quieter. Another prototype is currently on the workbench. ;-)
@@gmcevoy Hyperlube would probably be a better choice as far as thickness is concerned. Also, no matter how long it stays in, wear would not be an issue. I've seen it used in industrial gearboxes which only get service once every five years with no issues or wear, using only straight hyperlube. It coats all metal parts and will not drain off. I've thought of using it in my Elements drivetrain many times if I could just keep it from leaking out.
@@shadow7796 Interesting. I will look it up. I was thinking more within the lines of ATF fluid, which is just as well, even in a manual transmission. My BMW has a manual gearbox with ATF in it, and so did my Land Rover Discovery 3.5 V8. Not sure why these choices were made, but I follow recommendations by the book, so I am willing to give it a shot in this little wonder of two speed goodness. I'll let you know how it goes.
@@gmcevoy in my opinion, atf has many more additives in it's makeup to help an automatic and some manual transmissions shift smoothly under extreme pressure and temperature without oxidizing and foaming. Both auto and some manual transmissions have internal clothes, plates and solenoids and seals that these additives are designed to help operate properly. Where rc vehicle transmissions are designed to work much more like a traditional gearbox like what is found in a p.t.o. or axle portal or even a planetary setup, with no internal wet clothes solenoids or torque converter, and does not rely on high pressure to shift or gain any type of momentum. ATF may "do the job", but isn't the best protection or lubricating agent for an rc transmission. Some type of gear oil or even a synthetic motor oil would be much more suitable for what you're doing. That's why I suggested Hyperlube, you can mix it with any oil or just use it straight in a smaller project like that. At one time in my life I was an assistant manager at a Valvoline service center and had to learn a great deal about automotive fluids, their operational properties, additive make-up and uses. I would love to see your endeavor succeed and if I can be of any further assistance please let me know (just here to help). For now I simply use Mobil-1 full syn red grease in my Trailwalkers all metal trans and both differentials in case anyone was wandering. I run a combination of Hot Racing an Factory Team hardened steel gears in all with a Hot Racing aluminum case and Beeftubes axle housings. Let me know how things work out.
@@shadow7796 Awesome! Point taken on your highly informative comment! I will be doing some testing come early March. My fear with ATF is that it will be too fluid, and leak all over the place. I am pretty sure it will do the job, as we are far, far away from the extreme pressures encountered in automotive applications. I rebuilt the gearbox of another BMW that I owned, also running ATF, and it had nothing fancy in it. The one thing that I did notice is how compact it was put together. A wild guess is that ATF was chosen over an EP grade oil because of finer tolerances in between parts. I really must inquire, and find some answers... I would like to test a different type of setup which I am working on, for this little gearbox. I don't want to give it away too soon though, so I shall say no more about it for now. :-) Stay tuned! In the meantime, this one works well as it is. I just think it deserves another dose of insanity to take it a little further.
Your input is highly valued, and your insight is more than welcome! I am all about sharing views, knowledge and open discussions!
Speak soon!
Synthetic brake caliper slide grease would be better
An interesting alternative, which would certainly work. The challenge which I set myself with this project, however, was to succeed in making the gearbox run on actual automotive EP90 gearbox oil. Nothing is better than gearbox oil, inside a gearbox. ;-)
its never to far
Thank you for saying so, much appreciated!
I bought a fully built transmission, now this is what I am going to do. Instead of messing around with the gears, I will just put transmission oil lol.
Excellent! Another convinced user! Have fun with the transformation! :-)
@@gmcevoy By the way, wouldn't it break in the long run?
@@titlebeltreviewer8342 Break? This upgrade is the best it could ever get! Much better than the stock fitment as all the gearbox internals bathe in gear oil, bearing included. This will literally last forever. :-) Mine still goes strong in any case, and I am currently testing another prototype which will be published in a few weeks. Watch this space! ;-)
@@gmcevoy You actually savex my life cause I dont like greasing stuff lol