I want a hybrid side by side!

[cRiPpLe_rOoStEr]

If I could avoid a chain, I would. BTW have you never considered shaft-drive like the BMW R-Series motorcycles?

[CFECO]

Heavy, complicated, and expensive. I've got it down to 4 bearings on each swing arm, two for swing arm to driveshaft and two...driveshaft to frame, the driveshaft being the swing arm pivot. I am also closely looking at the drive chains being on the inside of the swing arms, simpler... but must have very good differential output shaft alignment with the swing arm pivot axis.

[cRiPpLe_rOoStEr]

Indeed.

Originally Posted by CFECO

I am also closely looking at the drive chains being on the inside of the swing arms, simpler... but must have very good differential output shaft alignment with the swing arm pivot axis.

Why not just getting a chain cover like the one used in some variations of the Honda Cub design?

[CFECO]

Here is the current swing arm pivot-driveshaft bearing design.

[CFECO]

Chain Cover? For what reason? I'm not familiar with the Honda Cub, but will look it up now.

[cRiPpLe_rOoStEr]

Originally Posted by CFECO

Chain Cover? For what reason?

To keep it sealed in a watertight case, avoiding small debris to adhere to the chain grease and accumulate there, improving the chain useful life.

[CFECO]

Looks to be simply a "Guard" to keep fingers and sticks out of the chain. Motorcross bikes tend to just chew up and spit out either of those that venture into the chain area. I had a friend who actually ran his ring finger through the primary sprocket of a Yamaha 100. Wasn't pretty, then or ever after.

[cRiPpLe_rOoStEr]

Originally Posted by CFECO

Looks to be simply a "Guard" to keep fingers and sticks out of the chain.

Basically, that's it. Anyway, as one of your goals for the hybrid side-by-side it to keep it silent enough to look at the wildlife from a closer distance, maybe some degree of noise suppression could be listed on the advantages of having a chain cover

[CFECO]

Here is my current motor choice, somewhat expensive, but Extreme efficiency and power, and only need one of these. The current chief Engineer of these motors is the original inventor of this style Pancake motor. Too bad Briggs and Stratton does not still make these!

[jamesqf]

Originally Posted by cRiPpLe_rOoStEr

Anyway, as one of your goals for the hybrid side-by-side it to keep it silent enough to look at the wildlife from a closer distance...

Don't know if that's going to be achievable, though, as you'd still be left with tire noise. In my experience, anyway, most wildlife can hear mountain bike tires, horse hooves, and even normal walking.