How easy is this mod if I have a lectric XP style folding fat tire bike? I see the Surface604 Twist comes now with a Torque sensor, but it's priced $1400 more expensive for pretty much just that. The sensors themselves are fairly cheap. I just have no idea how easy an undertaking this is. Any experience with this? Appreciate it.
Changing folding fat tire from cadence to torque sensor
- Thread starter Rappy
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AHicks
Well-Known Member
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- USA
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- Snow Bird - Summer S.E. Michigan, Winter Gulf Coast North Central Fl.
That's the issue, a compatible controller. Standard types have no way of dealing with a torque sensor. So you can bolt a torque sensor on to a bike, but there's nowhere for the wires to go. They WILL NOT work in place of the throttle, nor will they work in parallel with a throttle.
AHicks
Well-Known Member
- Region
- USA
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- Snow Bird - Summer S.E. Michigan, Winter Gulf Coast North Central Fl.
I can share that the KT/Kunteng controllers are pretty popular aftermarket conversions, and they are NOT torque sensor compatible. Not yet anyway. To be honest I haven't seen anything compatible, other than the Grin Technology controllers. There's a LOT to that option though.....
AHicks
Well-Known Member
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- USA
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- Snow Bird - Summer S.E. Michigan, Winter Gulf Coast North Central Fl.
I doubt seriously Eunorau is going to have much to say about optional controllers, especially those that are torque sensor enabled.....Ask Eunorau.
There are quite a few controllers.
Make sure to compare with their AliExpress store pricing. The prices are different.
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I didn't want to suggest Grin due to their price & ugly display.
Grin is world's renown ebike tuner though. Their components are state of the art except display.
On the bold, though I agree 1000%, leaving them out just doesn't feel right.
harryS
Well-Known Member
You can buy a torque sensing bottom bracket from Grin, if they have one to fit the wider BB of a fat tire bike. Add a Cycle Analyst. This changes the T/S signal to a voltage that you feed into your controller's throttle input. That's about $200-250, I believe in parts. And what's the end result. No speed/torque improvement. You just have to pedal harder, especially on a 65+ pound hard pedaling bike like the XP. I don't see the attraction.
I've never looked for a T/S compatible controller. I've found the cadence sensor on a KT controller to meet my needs. The KT's must be relatively underpowered in the lower levels, as other cadence controllers I've tried just seem overboosted.
I've never looked for a T/S compatible controller. I've found the cadence sensor on a KT controller to meet my needs. The KT's must be relatively underpowered in the lower levels, as other cadence controllers I've tried just seem overboosted.
AHicks
Well-Known Member
- Region
- USA
- City
- Snow Bird - Summer S.E. Michigan, Winter Gulf Coast North Central Fl.
That's the attraction IMHO, especially when you consider you can adjust it. That's a feature many controller manf's could take a lesson on. So there's that and the power (vs. speed) based PAS. The 2 together make all the difference in the world....
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