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Unread 18-09-2003, 13:15
Jnadke Jnadke is offline
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Quote:
Originally posted by Tytus Gerrish
Ahh Cool im getting mentioned now as an inventor

I Personaly Can,t stand automatics Its All Manual For me, But on an atonomus robot i see the advantages And i Didn't steel my idea from the thunderchickens I have only known about it for a month now when Brandon said a similar device already exists, ive been ctudying the CCT and it uses the same mechnical princapls as the "Gerrish Gearbox" But It Is Very Diffrent!. I went with a reverce diff thinking its how Dual-Engine Helicopters merge their power. Ive yet to draw the Srag chutches to prevent backdrive in my models, its gonna get in there tho

BTY: I NEED AUTOCAD!
Nobody ever really said you stole any ideas. We were just saying that the concept has been done before.

Both from a physics standpoint and from a design standpoint a bevel gearbox "differential" is the same as a planetary gearset, only re-arranged. In both cases, the stall torques need to be the same on both motors in order to prevent backdrive (unless a clutch mechanism is used), and in both cases the overall speed of the gearbox is the average of both motors.

More discussion has already been done here. The differential you have designed is merely a planetary gearset with the carrier fixed.
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Last edited by Jnadke : 18-09-2003 at 13:38.