Help! Tech Townie Electra 7 speed step through

Eljimb0

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Joined
Jun 8, 2021
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Hello, I bought a Tech Townie 'electra' 7 speed ...step through. It was once stolen and stripped. I have piece by piece put it back together. I am into it about 400 bucks (and a lot of time) The battery is still missing, and the price of the "factory replacement" is a deal breaker. I intended to build my own battery but it seems the esc responsibilities are shared by the factory battery pack and the esc look alike that mounts to the bike. I'm inclined to find an aftermarket (bafang or whatever speed control.. and go back to making the battery pack myself. Is pedal assist torque sensor going to work or am I digging a deeper rathole to get lost in. What I really need is a dead factory battery .. good luck finding one here in Hawaii :( Thanks in advance
 
D

Deleted member 4845

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Controller, not an esc.

Support for torque sensors is NOT AT ALL universal, and can be specific to brand of sensor.

A Controller and throttle that supports your motor Should be fairly easy to find.
 

solliex

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Aug 25, 2021
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Hello, I bought a Tech Townie 'electra' 7 speed ...step through. It was once stolen and stripped. I have piece by piece put it back together. I am into it about 400 bucks (and a lot of time) The battery is still missing, and the price of the "factory replacement" is a deal breaker. I intended to build my own battery but it seems the esc responsibilities are shared by the factory battery pack and the esc look alike that mounts to the bike. I'm inclined to find an aftermarket (bafang or whatever speed control.. and go back to making the battery pack myself. Is pedal assist torque sensor going to work or am I digging a deeper rathole to get lost in. What I really need is a dead factory battery .. good luck finding one here in Hawaii :( Thanks in advance
It seems Bosch has a computer in each of the battery, the controller and the display and they all work together No aftermarket e-battery repair center would touch Bosch batteries for this reason. I wound up buying a Bosch battery off of REI because you get a 10% member discount. I own two electric Townie go’s, They are eight speed Shimano internal hub. It’s very expensive to replace the mechanism if you have such hub.
 
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Deleted member 4845

Guest
Didn't know you had Bosch equipment. Yeah, you are screwed.

You can replace the battery, controller, and display, that should get around their crap, on their mid-drive models the controller is inside the motor and more difficult to replace.

Avoid such proprietary systems at all costs. Cause COST is what they give you. This is why Bionx failed, or one of the reasons. Great product, bad strategy.
 
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