A Death Trap on the Dyno.
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- čas přidán 16. 02. 2023
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That anecdote gave me flashbacks.
I installed a lighting coil, lights, and a horn on my Yamaha TZ250G and commuted to Seattle’s Harbor Island for a couple of years and then switched back to my 500 Interceptor (VF500F). The TZ was faster but the Interceptor was less work.
You got to open up that exhaust port on the main motor my dude. You are trying to move massive amounts of gas through there with next to no pressure differential, you can't create velocity to scavenge without a pressure differential.
Do a compression the 1st test after the 3rd or 4th. See if u drop about 7 psi
You would get so many views with Indonesian subtitles. 2stroke bikes man.
Sometimes I am more excited for these videos than I am for the actual weekend.
feel you
True 😅
What is a weekend?
@@ghockings rest days for rich people
I agree 100% wake up Saturday and watch this with a coffee ❤️perfection
That dip in the powerband, the low power, could it be wheelspin? Hmm, I remember using belt dressing spray on the roller last time I used this dyno, probably for a reason...
maybe ... try different weight on wheel ... u will see ... this bike is crasy 😅🤣🤣🤣
I think it's unlikely to be wheelspin but with such a small contact patch who knows 😂
I thought the dip was pretty normal on a two-stroke that doesn't have a power valve or similar 🤷🏻♂️
You can also wipe the tire with acetone or some other solvent, it removes any traces of oil or grease and also removes dust, that usually improves the traction
Engine and exhaust could have different timing. The powerband isn’t typically for a two stroke engine with no variable intake or exhaust. If engine and exhaust timing match perfectly you will have one peak, not two.
Try cheap hairspray on the rear!
Getting my 2 stroke fumes in early, what a nice way to start the day.
As an engine builder and mechanic, Easily my favourite channel on CZcams. Good work mate.
Have you seen Garage 4age?
He's in NZ and has a chassis dyno and tests his Toyota 4AGE equipped 'turd' as it's affectionately known. He tests intake length, exhaust headers, camshafts, valve timing, compression so on and so forth. It is very grass roots like this. It is a gem of a channel. It took me more than a year to realize what an excellent channel it actually is.
@@ThePaulv12 not to mention his vvt conversion on a 16v
@@youwantshum9860 pppppp
This channel made me work on my gy6 moped to the point where 25mph was a struggle to the point now where i have rebuilt the engine 6 times. It sits between 40 and 45mph and has exploded on me twice. Very exciting. 😀
One thing I found very useful when experimenting with engines. Try one thing at a time. If you add more variables you don't know what exactly caused the change.
Keep up the good work!
I like how you deleted the last bit of strength that poor frame had in the name of power.
Love the video, cant wait for the next one :)
Man, I really missed the deathtrap. That was such a good build.
Good to see it back in action and getting the tuning it deserves.
You have the only thing I consistently watch. No show movie or CZcamsr compares
It feels like everything just went up a notch and got more interesting and exciting when you shifted direction. I feel like this has helped make the path forwards clearer. Applaud you for the ability to do this, especially when it involves abandoning something you spent so much time working on like the dyno and beam mounted setup. I think you've nailed it with the last two videos, and the plan you have from here - you seem reinvigorated and I think all of us are too. Loving the editing too - it's just so fun and engaging to watch. Can't wait for next weekend!
Finally some realistic dyno testing, loving the new direction your taking, start basic and adding from there one thing at a time Thats the way to gain reliable and consistent power
En av dina bästa videos på länge. Riktigt roligt å se köra å tydliga resultat och skillnader på det du gör.
Dear friend, it is so nice to listen at crispy 2stroke sound in the early weekend morning!
It is getting more and more exciting and seeing these engines running in a real frame is even more nice. Thanks from germany!
Lifting the vehicle off the rolls reminds of about 25 years ago with our Clayton 8.65" dual roll emissions dynos with clutch-able flywheels and hydro-kinetic power absorption unit (PAU, for road load simulation). The flywheels were to simulate the vehicle mass in 125 pound increments from about 2000 pounds to 6000 pounds. Each increment needed a friction power loss calibration. With no electric motor on the system, a vehicle had to spin the dyno system (rolls and flywheels) up above 55 mph. Then an air jack system would be actuated to lift the rear bumper of the vehicle so that the drive wheels were off the dyno rolls. A timer measured the time to coast between 55 and 45 mph. The coast time and flywheel inertia setting was used to calculate and adjustment to the road load setting for the amount of friction in the dyno system for each flywheel combination. A table of friction power adjustment was created and used to adjust the road load setting for the 50 mph road load horsepower setting that was entered into the PAU controller.
Calibrations are mostly automated and simpler with the 48inch diameter single roll dynos with electric road load and inertia simulation that replaced those old Clayton dynos. Electric dyno is mechanically simpler too, without a bunch of flywheel clutches and bearings that needed replacement every now and then.
wow that engine is smooth, loves being 9-10K, easily pulling hard up to its max
love these videos!
That was my thoughts too. Wonderful street engine!
So much more satisfying watching a engine used as intended 💪 definitely a improvement over the brake dyno as regards to fluctuations in the readings
Very nice two-stroke sounds. Thanks Alex.
Great work! This is what I really think needed to happen to get your head in a better place. Good consistent numbers and loads of fun doing it. 👍
Definetely nice to see things finally work properly, good progress keep it up!
I just love the experimental progress.. Well done and thank you 2SS!!
The Sound is like music to me.
A heartwarming feeling.👍
Glad you've worked out the Dyno problem. Looking forward to next Friday
Your aspect ratio you film in has single-handedly justified my ultrawide monitor purchase, so thanks for that!
When that powerband hit, it cemented my desire to get a 2 stroke again. Beautiful bokeh shots by the way! Can't wait to see your engine running in a frame.
Great episode - you can really feel the fun vibrations - looks like systematic progress too. Endlessly fascinating to watch this channel and see all the things a smart person can do!
Love it. What could be better on a Friday evening than sitting with a beer and watching 2 stroke Dyno runs. Can't wait for the next one😊
I'm sitting with a bourbon and our cats. A bear takes a lot of my couch 😅
Lol a bear :D
Truly fun episode - loved hearing the bike, and the shifting, and the revisiting an old lover...
Modern day "Reodor Fälgen". In the early days of the 90´s in the Gocart scene you aleways wanted the carburator as close to the inlet as possible. I´ve forgot duration timing of exhaust though. Kör på -du är på god väg. Cant get enough of this.
Fantastic, both your enthusiasm and your results. Really enjoying your videos.
Finally, an old style video that I love!
this dyno is the best sound content creator ever
Finally a nice 2 stroke sound!! You need a muffler on your custom engine..also very nice that you have a proper dyno now
Great video mate. Looking forward to seeing the results of the motor in the frame on the dyno . Fingers crossed that you get the results you are looking for. Cheers mate from Australia 🇦🇺
Pleased to see you back on the standard dyno and getting consistent results. Looking forward to next video with blown engine on test.
If you look at your power, it stays very constant while rpm increases (and torque decreases of course). That's a bit strange, to me this looks like a possible flow issue if some sort, either intake or exhaust
So good to hear some Dyno pulls. Death trap is even more death with those "speed holes" in the frame.
Excellent...since it is power to the rear wheel that really matters...now you can test losses in the drivetrain.
That little moped looks like awesome fun, I almost forgot about the video you made riding it on the road.
Include more content of your engines in action please!
thanks for the longer video!
Die DB50 Motoren waren echt super zum tunen, der Minarelli 345 Am6 aber nicht so anfällig und auch vom Durchzug her und von unter noch etwas besser! Wie immer super Video! 👌🏻
So happy to See the bike on the dyno doing repetetive tests!
Thoughts on supercharging:
- when pipe is on it will pull in air/fuel during blowdown. With pressurerized air/fuel even more will go down out the exhaust. So maybe less blowdown with pressurerized crankcase?
- reed valves work via pulses (right?) but with sc you will maybe push the reeds open or even risk of breaking them?
- could you again tell us the timing of the ports?
- so basically if you want to trap more air/fuel in cylinder blowdown does not help
- even the pipe will work somehow against the trapping of mixture in the cylinder.
Rethinking the design?
What do other 2-stroke supercharged folks do?
You are awsome dude!!! 😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊
Love these longer videos 🤌🏼🤌🏼🤌🏼
Love your work, as always very entertaining.
My work place gets like yours, I focus in something, create a big mess, once I've got it right, and happy with it, I clean up afterwards, then start the next project. It's a vicious cycle, but I love it.
I bought not long ago, one of the China Cheap pistons, to fit into my YAMAHA AG100 1973 382, I had to cut the intake ports into piston and it meant I didn't have to go first over size bore, just honed it to suite, so 3 pistons first bore, I got nearly 6000 miles out of it, I could feel the compression drop recently, then on the 26/1/23 the locating pin of piston, for the top ring, worked lose, then bounced around on top of piston, did some minor damage, luckily I had a spare barrel and matching piston, genuine Yamaha, that'll keep the old girl going for a while.
I could watch hours of this stellar 2STROKE STUFFING soul fulfilling entertainment. Thanks a bunch👏
Bro right after u said this is why 2 strokes make u smile when u revved it I literally was smiling and couldn't hold it back like why 😂😂
Seeing the engine in the frame and spinning a wheel will be fantastic
This is so sketchy and I love it. That’s a lot of power to the axle, can that axle reliably handle those loads? 10HP spinning parts up to catastrophic failure is a LOT of energy I think.
Very cool. I love riding in the bicycle lane and seeing the look on people's face when I start pulling away from them at 25mph.
Have you got a china bike setup? 80cc?
@@fullsendmarinedarwin7244 a bt100 with a modified pipe is all. Top speed 35mph with my big ass
Die beste und einfachste Lösung für einen Prüfstand 👍👍
Always a great day when you upload!
That's how my benchs look too, out of hand is the order of the day...every day, year after year, 45 minutes after its surgery grade clean. Hats off to the tinkerers
Love you man,, appreciate your work,, your SHARING tidbits of knowledge along the way.. Love this channel!
I HAD NO IDEA you had/built/worked on/designed/raced
Those OTHER BIKES! Keep dropping tidbits of your life while pressing forward.
Thank You.
To get the best plug readings it might be interesting to get a set for warming up and a set for actual data. I really enjoyed the sounds of this video, you captured it well. Brings back good memories!
Super excited about seeing how much hp the engine will make. Keep up the good work
Well done, that engine sounds sweet!!!👍😎
YES! I've been waiting for the bike stuff
nice, good to compare with a [somewhat] known engine. looking forward to see the numbers with the screamer.
Great video! Id be terrified of a bicycle wheel spinning that fast.
I really like these videos, specially because in spain we tune them a lot. Try fitting a bigger pipe, a couple hp may be released.
I dont know if it is reasonable but i would like to see more shorts as updates between videos
I got mixed feedback when I did a few shorts earlier. Maybe a separate shorts channel, I'll think about it 👍
17:03 = Yup... EXACTLY what I'd bloody do!.. Hahaha It's typical for me to be concentrating on something/working on something and I'd knock, bang into, drop a tool, of just generally bang, scrape, cut or trap myself doing the thing I was trying to do hahaha... (if the keyboard is buggered, I could HIGHLY recommend the 'Logitech K400 Plus' I use one, have seen other tuners use them and, as it is a keyboard and trackpad in one, it's a great little unit (I can attest it does survive stupid drops too! 😉)... Nice to see with your change in Dyno tactics you're getting the results and less troubles you need to continue this project 👍 😎🇬🇧
this does it i need to start my bike after the winter sleep.
Man, you are crazy! Keep the great work! Bravo!
I use my phone for reading the numbers on jets. Zoom in and then take the photo and check on your gallery after you take the picture. Good for "old eyes" 👀🤭
A friggin' hard tail moped. Surely the best frame to put the engine in!
Classic fun taking over testing the actual engine😂 "for some baselines"gotta love this channel
When you lit that pitch saturated wood on fire, it suddenly clicked in my mind as to what your videos were missing! There should be at least one pyromania moment in each of your videos. That was the cherry on top man.., bravo! 😉😅
I'd just like to say thank you. You've inspired me to turn in a totally different direction. I'm 51 and I'm going back to work, I got jack shit for hands on experience, but I understand HOW a motor works, I welded for a while, in my welding shop there was a powder paint booth and oven and lastly I've spent countless hours working on bicycles growing up. So, logically I came to the conclusion that I need to start my own my business, so I'm going to build custom motorized bicycles. I've got an a absolutely unique hook to bring in customers, unfortunately THIS particular bit of info must stay secret until it's time to implement it. I'm in the process of devouring every video you've put out. I really enjoy your videos and especially your delivery, very engaging, I doff my hat to you good sir.
Thanks! Glad I can be an inspiration, that's maybe my main goal with this channel. Means a lot!
@@2STROKESTUFFING thank you for answering you've got a loyal viewer here forever, this Is something I can do til I'm 100
Try to keep your prices low unless your near bigger income areas. Used to build them and couldn't sell for 500 bucks but mid income area in Indiana. Used to make custom headbadges for bikes as well
Hello to the deathtrap, The machine for people with Big Balls.
It’s hard to believe all that noise, rpm and power comes from a little two stroke. Can’t wait to see the forced induction on the chassis dyno.
Awesome video Alex fun videos coming.
Maybe plug temp had temp rising each run or a 115 jet may have been spoton.
Cheers.
These are unreal keep making these videos I love em soo much honest un real
i honestly dont mind that you intended to put the PIP engine into the speedway frame but instead had a play with the 77cc on the working dyno. it was just good to watch everything working as it should for a change
Loving it brova ain't seen the thing in awhile lol mint can't wait to see the frame n engine up and running keep smiling brova 👍
"Tidying up, it's getting out of hand". You should see my test bench.
excellent stuff mate, sound was awsome! cheers.
Lets go typical 2stroke stuffing roller is back with testing video.👍👍💪💪
SO AWESOME to see the deathtrap again…..💪🏻💪🏻💪🏻
You’re FRICKEN MAD 😂 and I love it 🤣 so Heath Robinson yet so much fun 😂👍✌️🇬🇧
Woohoo! On two wheels with gears and noise and, and etc etc………can’t wait to see the ‘new-motor-in-new-frame’ outcome. Keep at it!
Great to see you playing with a bike on the Dyno again
So look fwd to your videos!! Greatest way to start my day.
His neighbors must think he’s building an f1 car, only to pull out with the worlds most over engineered bycicle
This dyno is awesome! But be aware of the wheelspin or clutch slipping. Im pretty sure it has wheelspin because its a common issue on inertia dynos and with that narrow tire.
Yep, pretty sure that ppwer dip is wheelspin 👍
This was SO MUCH FUN TO WATCH !!!! AWESOMENESS !!!
My, that bike looks gorgeous!
Good base testing!
17:02 that calls for some velcro 😂(Hook-and-loop fasteners)
I get happier with each new video by you!
Videos like this make me want to go back to school
Hit that power band, son! 2-strokes are a beautiful thing...
Big smile at the end....Said it all.
You are superbly bonkers, mate....lovely video. Thanks...
So good to catch up with you again. Let me explain. I watched EVERY video for a year when I was living in Mexico, then when I came back to the UK other things occupied my time. But I'm glad to see a 'ped again 'cause last time I watched you, you were casting cylinders and doing stuff that no home mechanic really gets involved in. You had hit the buffers (literally - on the railway tracks!). I thought you had lost vision but now I can see stuff I recognise once more. Like you, I even left my KX500 in Mexico with plain water in the cooling system (nearly 4 years ago!). Why don't you choose one video every 3 months and post them together so I can get an idea of where you had got to, and when, so I can play catch up. Then I can start all over again. Let me tell you, it's a pleasure to see a straightforward carburettor, a real gearbox, an empty whisky glass, and a few grey hairs in your beard!
You are probably the ''mechanic'' with the most mathematical literacy and engineering youtube has ever recorded!
I look forward to your content the most keep up the great videos!
I was going to comment on shoelaces vs rotating thingies, but then thought the better of it 😮
cold air is slower than hot air in terms of wavespeed. so more than one reflection in exhaust and or intake become out of phase at the dip. if you push it out to red line, then it limits overrevving also. 15Hp possible easy peasy.
cool vid.
Always a good time when you upload
I had same type of dip on power on my 150. It had shit pipe.
More advanced timing lessened the dip but didn't remove it