Can a mid-drive Kush be ridden with throttle only?

Joe Good

Member
Thanks for sharing. I did not know that. Gonna have to stay with rear wheel drive.
 
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JRA

Well-Known Member
There is no reason that a mid drive won’t work on throttle only. Basically there is a one way bearing on the cranks that allows for the chain ring to rotate while the cranks can stay stationary.

For example all the very popular Bafang kit middrives operate throttle only, but also have a PAS. The BBSHD is capable of running at high watts for a kit system and the Ultra will also as an integrated.
 

Mike's E-Bikes

Well-Known Member
There is no reason that a mid drive won’t work on throttle only. Basically there is a one way bearing on the cranks that allows for the chain ring to rotate while the cranks can stay stationary.

For example all the very popular Bafang kit middrives operate throttle only, but also have a PAS. The BBSHD is capable of running at high watts for a kit system and the Ultra will also as an integrated.
That's because the after market bafang mid drives in the BBx series contain a built in clutch. Some bafang mid drives for OEM's don't have a clutch and don't possess a throttle. Some do. Most other oem mid drives do not have throttles. Probably never will as it would require major re-design.
 

Mike's E-Bikes

Well-Known Member
An interesting irony is that mid drives wear out your chain and derailleur faster, and so if you have a chain break, mid ride, you are sol. And walking the bike home, unless you carry a repair kit and tools with you.

But with a rear hub drive, if the chain breaks, you can pick the chain up, get back on bike and use the throttle to get you to 'home' or somewhere for a repair. Assuming you have some battery range left. ;)
 

Mike's E-Bikes

Well-Known Member
Also new combination torque and speed sensing bottom bracket designs are coming out on the market, specifically for hub drives. They are better than before and address prior clearance and fit issues. Closing the gap on performance characteristics of hub drives vs mid. Ebike OEM's will soon utilize these more if they aren't already. Will help improve range too. We will likely see more all wheel drive ebikes with front and rear motors that are more compact, than prior hub drives, improving traction, efficiency, and balance front to back weight. They are used now on fat tire ebikes but heavy and awkward. The new designs will be much more refined. They'll be awesome for cargo ebikes too.