DYNO TESTED MOTORIZED BIKE - No Air Filter, No Exhaust Cap, Fixed Intake Gasket
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- čas přidán 22. 11. 2017
- Trying out a few quick mods on the dyno before jumping into the heavier performance stuff. Trimming the intake gasket, removing the air filter, and removing the exhaust cap. Thanks for all the feedback on the previous video!
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I love this guy. You're the only one with a 66cc engine AND a dyno.
I appresiate your scientific approach the testing . it makes preforming mods on a bike more clear.
This confirms my butt dyno taking the exhaust cap off mine!
I can definitely climb hills better without the cap!
I keep my on because it straight piped and without the cap is loud as fuck
You've got me smoking cigars watching your videos in my garage LOL. Keep up the good work man, I love your videos!
+Kyle Tisdale Haha, great! Thanks!
Fantastic videos! I am preparing a race bike myself for the 2018 Sandelco Racing Series here in Sweden
+OSSA Nyberg Thanks! Cool, good luck!
Great work, can't wait to see more.
+NicGyver Thanks!
Very interesting video, with surprising results!
+Tris Rush Thanks!
now you need a reed valve and windowed piston, and better carb. Love to see the results.
Love your vids...followed along to try to balance my crank on my gas bike...ended up drilling holes to lose weight from crank opposite top end assembly...maybe a little smoother. Also like ur tips on how the expansion chamber works to increase power. I have everything opened right up size wise and some port timing adjustments. The pipe is the best powr mod by far after all else is tweaked.Want to see you change the port timing and get it back on the dyno. And get an ex chamber on there..cheers
+Perry Jackson Thanks! Looking forward to getting back on the dyno too! (might be tonight if everything goes to plan)
Awesome! Keep up the good work
+Ben Hop Thanks!
Happy to subscribe my friend❤
Your best vids are about moto bikes
Super work
+mk1tina Thanks!
These little engines have a lot of potential to create a lot more power than they do stock. They can really be a lot of fun. The best part is how cheap they are, if you screw up you are not out much money.
+hotsweetness99 👍
keep it up man.
Join Zeda Mafia on Facebook!
We are having a engine dyno built by the best this month!
I’d love to have you on my group.
+Zeda Motorsports Thanks for the invite!
Wheres Zeda Mafia or Zeda motorsports i cant find it anywhere?
Great! I built one years ago it had lots of torque a higher gear ratio, modified ports a long length chamber and biggest cooling fin head I could get. The timing on these is crap but you can find a happy setting. It did 67kmh and pulled up any hill in Sydney eastern suburbs AUS. But they became fully illegal so now I have a 1800w ebike and the cops don't even look.
+gen3v8 Thanks! Full illegal here too...
In Finland, legal as long as it doesn't go any faster than 25km/h.
Can you try testing - Air intake manifold length, Jetting, Performance Carbs, Rear sprocket size etc... This was almost perfect buy just needs all the little test done that people commonly argue about.
I just took the baffle off my bike. It's really loud, but the performance gain is unbelievable.
i think removing exhaust cap just removes any backpressure and thatway leans up the mix and gains power. however its better to leave the cap on and just lean out the main jet. from stock its 70 or 72, stock 66cc likes 64-68 main.
The flashing on the ports is probably insane. I bought one of the supposedly better quality motors (5hp claimed) and I still had to spend a good bit of time smoothing things out. Not even changing port dimension but just removing flash from casting. There is so much room for improvement on these motors. Keep up the fight my friend! I see Zeda found you. Ha ha ha. Sure you could teach them a thing or two. 👍
+Allen Brown Thanks! Yeah, after a quick look there's all kinds of weird casting flaws.
2STROKE STUFFING - Yes sir! I spent probably 2 hours on just the edges of the cooling fins. They were like knife edges on mine. Of course that bit was just for looks but I'm all about detail.
Dude ya build good shit
I don't know if this guy is crazy or a genius, or both.
Definitely crazy...
@@2STROKESTUFFING them very long, cold and dark winters up north, innit
I can smell this video
Nice to see the gains. Did adjust the carb after each mod?
Thanks! Haven't touched the carb yet, but it needs more fuel now with the pipe.
It looked like that exhaust cap's outlet extended into the muffler, I don't think that's how it's supposed to be. I wouldn't be surprised if you could get even more gain by cutting that off, and smoothing out the inside of the cap. I suspect that's why removing the cap showed any gain at all, it shouldn't have, it should have reduced power a bit.
+UNITED POLICE STATES OF AMERICA I could try that!
Haha the bike sounds like my first Gillera Citta :D
How did you get your bike to run so perfect with no sputter man! Amazing
Was there any break in period before the test runs, and if not, what effect did it have over the course of the various runs? In other words did the motor "loosen up" towards the end of the testing?
Awesome job so far. Question, is this the 50cc kit or 66cc kit you're working with here? Oh and I'd like to buy you a new timing light, what's the best way to go about it. Keep up the great work!
+Barnfresh1 Thanks! It was advertised as "80cc", but is actually 66cc. Haven't measured it yet tho, could be something completely different too... That would be awesome, thanks! Just email me at 2strokestuffing@gmail.com
Cool email sent
Awesome video i do have a question im getting into 2 strokes more lately and im building a bike but the only spare 2 stroke a got is an old chainsaw motor now it will start and run as long as you dont let the throttle out u let the throttle out to idle shuts straight off amd one other thing i noticed time before last that i ran it that it was spit a decent amount of oil out the exhaust just shoot me what u think my be i would greatly appreciate it
Nice.
very interesting!
+DerKrawallkeks Thanks!
Been following a few months. So excited about the motorized bike. I have recently built a bike with the same Chinese engine. Tho now it includes: ported cylinder, big reed valve, CNC head, expansion chamber, 19mm card and performance ignition. No idea about h.p. However, with my 21kg bike + 72kg rider + 34t sprocket, I am seeing 75kph at 1800m above sea level, here where I live. I want to do further power mods, and I look forward to your insight and wisdom. Your videos are entertaining, humorous and informative, I have found them to be an inspiring source of knowledge while working on my bike. Thank You. I’d love to get advice from you on how to squeeze more power from my engine.
.4 hp isnt a lot but when you look at a proportion it is almost 1/3 more power
yes, it really is, I removed the filter, a power gain, removed the exhaust a BIG POWER GAIN
Ha! knew i wasn't crazy about the exhaust cap. would wheelie easier, and would be a little more forgiving mid wheelie. That's where they performance carburetor and Air filter of coarse
+Marion Cobretti 👍
How i wanted place my motorized on dyno i did all these stuffs and more like changed the inginition point and lowered the cylinder and changed the head + an custom exhaust
Annet luffilter + insugstrakt og ekspasjonskammer på eksosen burde gjøre stor forskjell
that malossi pipe you have probably will wake this engine up a whole lot :) and some jets :)
Very interesting idea the picture what one of those kits run?
+derk nobit The Instagram pic? I think it was a Stage6 kit for MBK Booster, expensive, around 250EUR.
You should remove the baffles out of the exhaust too.
I found that punching the baffles out of the bubble in the stock pipe made a great difference and then putting the cap back on
@Charles Hamm The San Antonio Lone Wolf cut them off with angle grinder
Did you adjust the air/fuel mixture at all from stock or make any carb adjustments after the mods? Is the engine running rich on stocking settings or was it good out of the box?
I imagine it was on the rich side just wondering your thoughts on it?
Love the vids...great work....very interesting..
+harry guy Haven't touched it yet, seems rich still even without the airfilter.
+harry guy And thanks!
Hey man.
I have played around with these crap engines myself before. I have it in a 1960's Puch bike and damn the thing used to fly (top speed of 80km/h) until the crank blew, once you will have a look inside you will understand why.
But what I wanted to say it that I did make a "performance" exhaust pipe from a 50cc sport leovince pipe for a minarelli scooter and that seemed to give a nice increase in power. As my engine is dead I would like to mail it to you for you to try it on the dyno and maybe tell if it is any good, you would offcourse keep it.
I did run this engine with the piaggio 17.5mm standard carb, that is now used on my drifting shopping kart. :D
I also designed a intake manifold to house a reed valve from minarelli scooter, yet I only had a 3d printer, so it melted soon after, but it definetly helped.
So yeah, hit me up in PM and I can send you the exhaust and reed, manifold kit :)
Also I can send you the file for the manifold 3d print.
Some photos of it and a video of how I killed it.
photos.app.goo.gl/msN8eitGXQIcZm1i1
+Karlis Akis Awesome man, that would be cool thanks! A drifting shopping kart sounds crazy! Mail me on 2strokestuffing@gmail.com, struggling with the youtube PM system.
ooooohh year - you having fun in garage :-) karlis akis
Could you tell me what are the heads you said that would work for them? I want to buy the Thomas head but can’t find it any where.
+Richard Thai It's "Tomos", go to treatland.tv, they have them. Puch E50/ZA50 heads are the same stud patern. It's not a perfect match, but a little filing/drilling will get you there.
You should do a stock road top speed run before changing too much.
+marcus mcc True! Maybe this weekend, if weather allows...
Why not move the computerscreen, so you dont need to see over your shoulder when you run your dyno?
Already interesting. Do we conclude that the exhaust silencer is just the wrong shape or length for the porting as it is? I do just wonder how long the big-end and main bearings will hold up to this experimentation! Thanks, good video.
Les
I've gotta feeling the bottom end is gonna do ok, fingers crossed!
+Leslie Austin Thanks! I don't think the exhaust is doing anything at all here, and removing the cap just let the engine breathe better.
Yeah agree, just breathing a little more, doubt it's doing much expansion chamber work.
Taking the end of and getting more power sort of points to the intake being on the small side.
(My reasoning is: If it was just exhaust pressure too high it would be getting too hot, so ifs not too hot then it points to intake too small or timing)
Might be time to measure up the port timing on it to see where its at.
im lucking forward for tomos vs chinesium
+Tray prorok That's a good title!
haha make me proud :D
I have A 50cc moped, IT has some timing parts on IT But id like to know IF its worth puttningen on A open air filter on IT. Do you think i Will see any gain in horsepower? The moped is A Yamaha Slider, IT has A 50cc stage6 mk2 cylinder, A stage 6 pro replica exhaust, stage 6 crank, cheap 17,5 mm carburator. A malissi mhr variator. Original "membran" and reeds and clutch and gears and ignition. And intake. And air box . "This became a messy text..." i actually already have a open biltema airfilter. Do U think I'll gain hp or will it just make the engine more un relieble? And do u think I should change carburator and intake as well? Thanks for answers.
+Elias Emanuelsson I think you should try and see if you notice any difference!
2STROKE STUFFING i think I Will :) ty
Vary interesting
Try make a diy velocity stack and test it on the dyno?
+Eurobeatmachinist86 👍
More timing, more compression! Just take the key out of the magnet and tighten it down, It will not slip. I did this to make on of these motors run upside down and backward. It never failed.
+Steven Main Thanks for the tip!
Did you already cut the baffle on the exhaust cap? Mine has a long baffle connected to mine...
Do more motorized bike test more power mods plz I need u experience
1.25hp wow
I had no idea you could fit a Tomos/Puch head on one of those nice 👌🏻 it might make a good power increase if you do some porting and polishing on those might be able to get about 5hp pretty easy of course 5 hp on a Tomos is nothing I know because I have a tomos I blew up I didn’t have $500 for an engine legit tomos so I spent $300 and hacked the frame and put a lifan 125cc pitbike motor it’s a rocketship until about 50mph and then it starts to lose Exceller ration but it gets to 60mph but that’s because I have a 19 tooth front sprocket that is meant for an ATV and 45 tooth rear sprocket I need to get a sprocket that is slightly smaller for the rear and go back down to the 17 tooth front sprocket do you have any suggestions do any of the commenters have any suggestions to have had the time to read this ridiculous oversized comment?
Interesting, I didnt think mine had a squash band. or much of one anyways.
What about throwing a jackshaft shift kit on there?
+Colin B Could happen, but not on this shitty bike. I plan on switching it out for something better when the engine is starting to make power.
did you test the tomos head on there to see the gains?
+Chamblizi The All Mighty! Not yet.
2STROKE STUFFING I just feel the tomos still beats RSE HEADS at a fraction of the cost but leans between a RSE and bbr tuning head since tomos is of higher quality then any mb products.
If you make testing on that please do a post thanks.
ahh well i was looking at juiced moto parts and he stated that the open " differances" between using the puch head vs the stock mb slant head is about 2cc of capacity volume, in the head in which the slant has 9cc capacity inside the head, while the puch uses 7cc of fluid volume.
This means that the compression will spike, from 150 psi to 200psi thus making it high compression resulting in overheating,
my own theory tells me that to compensate for this one would have to use a different piston other then that which is equipped with the standard MB kit known as a dished piston which are commonly found in older mopeds such as PGO scooters, morini/ minarelli's which are fairly expensive but worth the time if one could match its said output. but by far if the jug is within confines of stroke length relative to the crankshaft one could directly swap with a puch jug set up "ASSUMING" that the transfer ports match up. if they dont then its best to tick tack back to the drawing board.
I my self am looking for an extensive hack to crack the 50cc code of problems even including going water cooled if applicable.
In the long run what it boils down to adding that 2-3ccs back to satify the stock jug.
in addition reedless motorized bicycles run better when cold, so if there was a way to over cool one you'd gain that back at top speed but more likely resulting in seizure by over cooling.
Oh and by the way thanks for showing how to balance our shitty cranks.
next time my engine tanks after brazing my current stripped cylinder bolt i think its time to tear it down and rebuild it back up.
what jug was that at the end of the video? Thanks.
+Troy Collins Tomos A35
A large part of thr male population is color blind. That said, not completely color blind. This means colors can often be used without problem. Basicly, some people can't tell a difference in reds or greens for the most part. It has to do with cone development in the eyes.....something like that...
I work with large trucks in the US. Many had wiring harnesses that were only white and black. They had to have letters and numbers on them. I never understood why colors were a problem....if you are going to lable them anyway....it still helps 90% of the population.
That said, I would leave the dotted and dashed lines....but change their colors. I only suggest that because you show the graphs in your videos....if it was just you, it wouldn't matter.
Good Luck!
+Mike Grady Hadn't thought of that. Good advice!
Where was the max rpm? Thkyou
Try 5 mm .68 main jet!
With stock .75 jet It's running on too rich mixture.
+Alex Ray Thanks for the tip!
You'l have 2 H.P. or more and much more RPM (with no filter or the corresponding zero-resistance air filter).
Here's my bike: i4.imageban.ru/out/2017/11/26/5808d0df78f34062be00953a1bc55ab6.jpg
So you gain 2 HP more by changing the main jet and removing the air filter?
U sell the upgrade from 50cc to 100cc
Wow! those are expensive.
+derk nobit yep...
Do you build engines for sale?
Are you going to put a a35 top end on it?
+Matthew Margazano Maybe, at least I know it's not impossible.
2STROKE STUFFING are you interested in a used gilardoini 80cc big bore kit?
+Matthew Margazano Maybe, how much?
2STROKE STUFFING Id be more than happy to donate to the cause
+Matthew Margazano Super awesome! Thanks a bunch! Go for Gila then! Must play a bit with the stock barrel first tho. Mail me on 2strokestuffing@gmail.com
That's okay power compared to a 50cc 4 stroke moped scooter.
I wanna see proof about theze exhaust pipes... I don't believe the exhaust pipes domuch of anything vs modifying the stock pipe.. $80 pipe never saw anyone say they got more than a 1mph difference.
Like the street bike 2 stroke better
+Jesse Holmes With all the help from you guys donating and supporting me on Patreon I'll probably be able to get all the parts needed to get it going again next month! Stay tuned!
take reflector off wheel
+bessun 1 👍
To be honest, this mod is the only way to go. With a filter and baffles, the performance is no good. I couldn't even handle the hills I'm riding.
that engine sucks worse than my ex.in both cases,they need to be liberated.
Not trying to insult you, but you make things way to difficult to understand. At least for me, wish you would make you teaching more understandable as you're very very smart when it comes to these two strokes.. I tried to follow your suggestions for porting intake, transfers & exhaust and my word you lost the hell out of me... Seeing that dyno is like, " this man is a freeking genius ".... No offense intended at all !