1906 motor bike engine

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dsquire:
Tom

I have to agree fully with Steve (vtsteam). His remarks are spot on. Enjoy the journey. :D :D

Cheers :beer:

Don

BronxFigs:
Jason, and others...

No problems. Tommy-T....take all the time you need. Bike is coming along beautifully......

Frank

BronxFigs:
Probably my 40th time reading through this build tutorial....

Questions for Tom:
1. If you had to do the engine over, what would you do differently, if anything?
2. Why the split crankcase? Was this design chosen for ease of assembling the engine components....i.e. the crank with con-rod, and piston...and does it leak oil at the seam?
3. You mentioned that you would NOT use a 3 degree tapered crank-pin to hold the large end of the con-rod. Can you explain your opinion, please? Why?
4. While testing and running your engine, did you find the design that you used to have enough cooling fins, etc. to keep the engine from overheating? (If/when I build a version of this engine, it will not be mounted on a motorcycle, but instead I will run it for displays, etc. Will I need a fan to blow cool air past the engine for adequate cooling?).
5. Did you have to modify the double, flywheels for better engine balance.... i.e. add weights, drill holes to remove metal, etc?

Thanks.

Frank

OKTomT:
Frank some how missed your last post. I will try to answer your questions.
1 add ball or roller bearings to all shafts , make the rod out of alum. ,cast the crankcase out of aluminum.
2 for ease of assembling it does not leak at the seam but it does leak around the shafts a little. there is a pin hole in one of the cases at the top where I welded it together and when the engine is running it leaks there I call that my oil presser gauge :(
3 cutting the tapered rod pin holes was hard to do with the tool I have, they need to be dead on, I think the new bike engines use straight press fit with no nuts.
4 it does not run hot just idling , but about 15 minutes is as long as I have run it. more testing needed.
5 yes sir John posted a link to a book that was a big help in balancing this engine look back at the beginning of this thread for that link.

BronxFigs:
Tom:

Thanks for the time taken to reply to some questions. Your answers have helped.

Good luck with the rest of the construction.

Frank

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