Hi there,
I just got a brand new TSDZ2 from eco-cycles. It is working, but have noticed that the resistance when turning the cranks is not continuous all the way around. It is smooth all the way except one spot, where it has a bit more friction. It's not a huge amount, but you can feel it when pedaling. There is also a subtle/quiet grinding sound at that point. It's very quiet (nothing like some of the things I've found when googling this), but it is definitely there once you notice it.
I noticed that if I put the bike on the repair stand and use the throttle to turn the chainring, there is a tiny wobble to it, right at the point where it makes the sound.
I removed the drive-side crank, chainring, and spider, and ran it again. Now the motor is smooth and silent. If I put the spider back on again but don't tighten the 5 retaining bolts fully, it is also smooth. As soon as I tighten them even the tiniest bit (< 1nm) the wobble and grind comes back.
The motor works, but I feel like something isn't right, and I suspect it will get worse if I don't deal with it sooner rather than later.
Has anyone had this before?
I just got a brand new TSDZ2 from eco-cycles. It is working, but have noticed that the resistance when turning the cranks is not continuous all the way around. It is smooth all the way except one spot, where it has a bit more friction. It's not a huge amount, but you can feel it when pedaling. There is also a subtle/quiet grinding sound at that point. It's very quiet (nothing like some of the things I've found when googling this), but it is definitely there once you notice it.
I noticed that if I put the bike on the repair stand and use the throttle to turn the chainring, there is a tiny wobble to it, right at the point where it makes the sound.
I removed the drive-side crank, chainring, and spider, and ran it again. Now the motor is smooth and silent. If I put the spider back on again but don't tighten the 5 retaining bolts fully, it is also smooth. As soon as I tighten them even the tiniest bit (< 1nm) the wobble and grind comes back.
The motor works, but I feel like something isn't right, and I suspect it will get worse if I don't deal with it sooner rather than later.
Has anyone had this before?
