btslo said:Will there be a motor only 500-750W tier? How would the pedal and power delivery feel compared to a TSDZ2 if you had a chance to test? Looking for a lightweight torque sense middrive.
Tom said:Looks intriguing but who knows how refined the torque sensing will be. Seems like there is a wide variation among "torque sensing" drives.
Pilot Engineer said:Tom said:Looks intriguing but who knows how refined the torque sensing will be. Seems like there is a wide variation among "torque sensing" drives.
Hi Tom, the torque sensor is very refined. Comparing to a bottom bracket torque sensor is a different world. I'm not saying that because we're selling it, but that's the immediate feeling we had comparing it to the BB torque sensor we developed on the Evolution system.
nieles said:can you elaborate a bit on how the torque sensing is done?
But why should a chain sensing troque sensor be better? It adds mechanical parts to the chain, the pedals will give when pressing, it will be disturbed by chain movements, it requires a quite complicated chain path with several pulleys. A boot bracket sensor does not have these disadvantages. Can you explain the advantages you see here?Pilot Engineer said:the torque sensor is very refined. Comparing to a bottom bracket torque sensor is a different world.
Sorry, but this no argument. It's just a matter of sensitivity and response time. The solution with the chainwheel and the lever is just simple and cheap, as you don't have to measure the torque from a turning shaft. But is it reliable with rain, dirt an high pressure cleaning?spiros said:I think that there is some kind of thing that is difficult to explain.....
nieles said:Pilot Engineer said:Tom said:Looks intriguing but who knows how refined the torque sensing will be. Seems like there is a wide variation among "torque sensing" drives.
Hi Tom, the torque sensor is very refined. Comparing to a bottom bracket torque sensor is a different world. I'm not saying that because we're selling it, but that's the immediate feeling we had comparing it to the BB torque sensor we developed on the Evolution system.
can you elaborate a bit on how the torque sensing is done?
can you also show some pictures of the different mounting methods (the indigogo page mentions there are 4 options)
Uturn said:But why should a chain sensing troque sensor be better? It adds mechanical parts to the chain, the pedals will give when pressing, it will be disturbed by chain movements, it requires a quite complicated chain path with several pulleys. A boot bracket sensor does not have these disadvantages. Can you explain the advantages you see here?
btslo said:.... there is no motor only 750W tier (but that's understood, I can run the 1kw version at less amps probably but will be stuck with external controller)
I like the minimalistic SW102 display used and perfect chainline and better ground clearance (which are TSDZ2 disadvantages for me)
Pilot Engineer said:The advantage here is that the measurement is very direct: from chain deflection to torque sensor signal. Plus it's amplified at the beginning because a ita takes a very small force to initially move the chain. Bottom bracket sensor adds weight, complexity and cost. Because of how the system is conceived, we'd had to use a chain tensioner anyway, so we're exploiting it to the fullest. If it's easy and works well, why not use it?
MercyFlush said:I think people are missing the fact that this is used by RockyMountain on their mid drives and it works very well. By far the best responsiveness of any I've tried.
Tom said:MercyFlush said:I think people are missing the fact that this is used by RockyMountain on their mid drives and it works very well. By far the best responsiveness of any I've tried.
Thanks, I'd never heard of those motors. Very high torque for a 250W euro-spec! The following review describes the torque sensing "as reactive as any I’ve experienced" although they also say "power delivery isn’t quite as smooth as with a Shimano motor".
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petrun said:There will be available different bottom bracket sizes , 100 or 120mm?
Pilot Engineer said:Hi Tom, the torque sensor is very refined. Comparing to a bottom bracket torque sensor is a different world.
Topic moved.Timelord said:By the way, what is this topic doing in the Items for Sale forum? It should be in E-bike Non-hub Motor Drives.