KIRBY
CB750 Enthusiast
Will the transmission need beefing up?
SOHC or DOHC? More than one kind of CB750...............
Thank you. The increased load would only be during the times when one transmission is in the next gear from the other. The trike can be used in matching gears (1/1, 2/2, 3/3, 4/4, 5/5) when quicker acceleration is not needed.even then the chains are still the weak point.
Isn't the same transmission used with the CB 900 and CB 1100? Do builders have the breakage problems when they install oversized cylinders? I'm new to this.
Yes, those are bearing blocks, but the two outer sprockets are on separate shafts. The center output sprocket rides between the large bevel gears of a differential, and is not solidly attached to either half shafts.Whew..........where to start...............OK, the setup as proposed there cannot and never will work ever.
A given, I seem to be seeing bearing pillow blocks in pics A and C between the outer individual drive sprockets and the center 'main' output sprocket.
You absolutely cannot link two engines together to stay in phase while expecting them to run at different rpms (in different gears from each other), it's impossible. You are then in two gears at once and what makes transmissions explode instantly at the racetrack, you cannot even be at idle speed and do it.
You cannot either tie two different power levels/loads into the opposite ends of a differential spider setup to both work at different percentages like a true car differential does, the one engine in one gear will violently affect the other one in the other not same gear because they are locked together in the spider setup,
have you tried it? where is it written?A differential splits power but it must match side for side and power cannot be applied INTO the OUTPUT sides, it CAN come out of two sides having been split though.
The two engines MUST switch gears electronically as any period of time while one is being shifted unloads the side gear on that side, the vehicle stops pulling instantly when the spiders then spin and the unloaded transmission goes apesh-t like with a missed shift. It will be very hard on clutches.
That may be a good pointStudy a standard car differential....................why is it the main drive gears are so big and the spiders are so much smaller??? Because the main big gears carry the power and torque, putting that backwards through the unit then loads all that power onto the spiders instead and they break very quickly. Spiders are sized to be able to coast adjust, they only get used at power off cornering, they have to take little power and why they are so small. Make them the hardest loaded part and that changes instantly.