Recent content by KIRBY

OK, let me see if I can put all this together. The CB750 transmission will not handle twice the power, but the weak link is the primary chain, not the gears, or the dogs? So, If I could run the primary chains of each engine to a common jack shaft with a gear in the center, and feed a single...

Yes, UNDER the motors is better. I DO like the look of the Indy Cars that had the headers coming from the middle of the Vee, but UNDER is simpler.

OK, UNDER would be OK. Not as sexy, but....

Thanks for the heads up. (no pun) the overhead space is skyhigh, so, I can just curl the pipes higher over the valve covers.

4 into 2

Well, that's a dumb way to do it. Now that I think of it, you are right! 1-4, and 2-3, would be the way to do it. Since the area above the engines is clear, I would turn the pairs up and over the engines, not to either side. Thanks!

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Ah, the 9-15% power loss. Well, it's back to the cush couplings.

What if I used a cogged drive belt from each engine to the jack shaft. Wouldn't that provide the dampening?

Thank you. I can put something like a cush coupling near the middle of the jack shaft. Don't want to much cushioning, because I want the two engines to stay sync'ed as closely as possible.

I probably will only need high strength chain from the jack shaft to the transmission. The other two chains will only carry the original power from each engine, along with keeping the two engines in sync, although, the trike WILL be heavier.

Yes, you did. Thanks. I DO listen. One CB750 transmission, or one from a more powerful bike? I don't really want to spend the money for that race transmission.

OK, I think I've found a way to do away with the differential and one transmission, and tie the two engines together with the primary chains, without putting extra power through either engine. Split the transmissions off from each engine,and store one. Install high strength primary chains from...

Thank you! I'm not playing a game, just trying to get some information. Please don't be upset if I don't take all of your advice.You have helped me in many ways, for instance, I now think I will move the engines up to on either side of my seat., because they need to be wider apart than my...

There is no reason I can't separate the two engines enough to clear the rear suspension with the inboard pipes. So, where do YOU get your exhaust systems when you buy an old bike?