Bike engine . Want to add two similar bike engine on a single shaft (https://i.stack.imgur.com/qMN5u.jpg)enter image description here

closed as too broad by raydowe, Rory Alsop, MooseLucifer, Chenmunka, anonymous2 Aug 23 '17 at 11:31

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  • What have you considered so far? how will you mount the engines - have you checked that the direction of rotation will match etc – Solar Mike Aug 22 '17 at 14:56
  • @SolarMike I will use both the engine s of same motorcycle company , will tune same average and weld the gears of both engine and then connect the engines to the shaft through the chains. – Nadéèm Khan Aug 22 '17 at 15:01
  • draw a diagram to show what you mean especially consider the engine orientation. – Solar Mike Aug 22 '17 at 15:11
  • Google Hogslayer. – Mysterfxit Aug 23 '17 at 4:14
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    The orientation of the crankshafts relative to each other is crucial. You can't just connect them at a random point; the resulting harmonics and vibration might literally rip the engine(s) apart. That appears to be a single cylinder -- I would suggest the firings be together, or alternating (360 degrees) apart for a four-stroke. You could make them 90 or 180 if you want your project to act like a Harley Davidson, but a Harley is a perfect example why you shouldn't fire both cylinders without respecting the timing. – SteveRacer Aug 23 '17 at 5:22

I found this article pretty quickly. It's an entire project about exactly that - how to run 2 IC engines together. There's way too much information for me to even decide what to quote, but it's all about the subject of running 2 engines.

  • This should be posted as a comment. – Solar Mike Aug 23 '17 at 5:33

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