Any regen to control maximun downhill coasting speed? Opposite of pedal assist limit.

Mike leroy

Active Member
My hill is a 10% - 20% grade. The downhill coasting speed is 45+ mph. The speed limit is 35mph. Does any regen have a setting that would automatically limit coasting speed to 35mph?

In other words, any way to avoid applying handbrakes when going downhill to automatically limit speed to 35mph?
 

Mike leroy

Active Member
I found that regen works better and is more restrictive when pedaling downhill.
Do you mean the battery recharges better? I can understand that.

I am willing to accept poor battery recharging levels. I want to keep the bike within the 35mph limit without manually squeezing the brakes down the hill. I want to minimize brake pad wear, because coasting speed is over 45mph.

I want the motor controller to spin the motor in reverse exactly enough to keep the speed under 35mph. A sort of regen cruise control. Is there a term for this, e.g., "brake control", "motor ABS" ?

What is your battery chemistry?
Does your system support back peddling ?
What motor or controller properties cause this, the number of phases, watts, or strength of magnets in your motor?
 
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Marko

Active Member
Turbos (MY -13) come with lithium nickel manganese cobalt oxide (LiNiMnCoO2) batteries. The GoSwiss Drive motor (250W, integrated controller) regen level is adjustable but only with a diagnostic sw and a computer connected to the battery socket. In my experience the regen is constant regardless of how I ride, pedaling or not. Adds charge about 0,5-1% per kilometer.
 

Mike leroy

Active Member
Turbos (MY -13) come with lithium nickel manganese cobalt oxide (LiNiMnCoO2) batteries. The GoSwiss Drive motor (250W, integrated controller) regen level is adjustable but only with a diagnostic sw and a computer connected to the battery socket. In my experience the regen is constant regardless of how I ride, pedaling or not. Adds charge about 0,5-1% per kilometer.
I am curious about LiNiMnCoO2 battery chemisty. That seems very exotic. What benefit comes from such a complex chemistry?