Racing my Home Made V-Twin Engine (Onboard)
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- Опубликовано: 14 янв 2024
- Here's a video of my most recent Mini GP race on the 144cc V -Twin. In all the bike went pretty well in the race, although it needs some further development.
The gearing seems a bit too short and it could do with some higher lift camshafts to raise the max rpm as it falls flat around 9,000. I would also want to add an oil cooler to keep the power consistent over the duration of the race.
I'm getting to the stage where I am tossing up further developing this motor for racing or putting the effort into a production 140cc engine as I would prefer to race this bike reliably and focus on developing my next project. . . The 2 stroke V4 Gp motor. 
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I've enjoyed riding bike that I've built from parts (Lego style) but when you made so much of it, FANTASTIC !!!
Thanks, it is definitely very satisfying to have completed it and even more so since winning some races on it.
Lovely machine...Deserves a ton of appreciatiation given its engineered at home....
Thank you
You have to be pretty pleased with your self , not to many people have built there own engine and frame then raced it , well done and looking forward to your current build
Bloody great to see this project go from a dream, to fangin around the track at 100K.
Thanks for sharing the journey 👍
Now for the 2st.....😁
Mad! I'm an apprentice in sheetmetal and heavy fab but ive always wanted to design and build my own engines just like you have so watching this is a dream come true!
Thank you.
Fantastic work! Love your channel.
Thank you
This is amazing that you have done all this to such success, well done! Even the fact your trial head gasket held up is so cool. Very well done.
Thank you, we will see the state of the gasket next time I pull it down.
Seriously impressive stuff. A project most can only dream of achieving!
Thank you, you can still come and take it for a spin if you’re down these ways over a race weekend.
Damn that looks fun, well done on the work so far :)
Well done Jonny. Sounded lovely. How was it afterwards? Nothing amiss I hope. All the best. Andy
The O-Ring in the head held up well, the only thing that was letting it down was air bubbles forming in the fuel hose to the front cylinder. I managed to bleed them out but a few came back by the end of each race.
It would lose a little power by the end of the race from the front cylinder going a bit lean from the air bubbles and probably the overall heat of the engine otherwise it was faultless.
You can see how the speed down the straight changes by the end of the video.
really love the concept of this twin, but you must put two 2 stroke cylinders in !!
that thing woulld realy fly. What is the weight of this bike ??
Under 70kg. Even putting an 85cc mx motor in there it would be a weapon.
it picks up alright past 80 it doesnt like it maybe different gears to keep it in the rpm range you need, 6like u say maybe race type camshaft. very impressive to build ur own engine that runs consistently. 2 stroke seems like easy way.
Thanks, luckily the next engine is a 2 stroke haha.
What software and hardware are you using to overlay the data on the video?
The go pro does it automatically through the go pro app which is pretty handy.
@@OddsandEndsMachining interesting!
What were the other bikes you were racing against?
Suzuki fxr150, Suzuki Gsx150 and some loncin 150cc motors shoehorned into other chassis.
How much power ?
I’m guessing between 8-12hp. It still needs a lot of development.
Great job man r u inNewZealand ?
Thank you, yep, I’m in Palmerston North.