Fellow ebike enthusiasts-
As this is the ONLY bicycle forum for which I am registered, I thought I would start here with my inquiry.
I’m considering adding a TDCM IGH rear hub motor to my M2S All-Go Carbon. Would also like to use a belt drive. Have to go with VEER split belt vs Gates because I don’t want to split my all-CF frame. The TDCM IGH has a 5 speed Sturmey Archer IGH built into it, for those who may be unfamiliar. Veer only makes rear sprockets for the 3-speed S-A, the Enviolo, and the Rohloff.
Looking at the Rohloff rear sprocket from VEER, it’s a solid unit, so, I could theoretically hog out the hole in order to make it fit a 5-speed S-A. After nearly two hours of combing the internet, though, I came up empty in finding the minimum internal diameter of a typical Rohloff rear sprocket. Not concerned with its splines... just if you were to slide the sprocket over a perfectly round cylinder, what would be the max diameter the cylinder could be before the sprocket wouldn’t fit? This small - yet elusive - critical dimension will tell me whether I would have enough “meat” on the body of the sprocket to work with for my custom application.
Might someone have one, and a pair of calipers, handy? If so, could ya do me a solid and take a quick measurement? Trying to get a feel for whether this is a feasible idea.
Thanks in advance!
-Jon
As this is the ONLY bicycle forum for which I am registered, I thought I would start here with my inquiry.
I’m considering adding a TDCM IGH rear hub motor to my M2S All-Go Carbon. Would also like to use a belt drive. Have to go with VEER split belt vs Gates because I don’t want to split my all-CF frame. The TDCM IGH has a 5 speed Sturmey Archer IGH built into it, for those who may be unfamiliar. Veer only makes rear sprockets for the 3-speed S-A, the Enviolo, and the Rohloff.
Looking at the Rohloff rear sprocket from VEER, it’s a solid unit, so, I could theoretically hog out the hole in order to make it fit a 5-speed S-A. After nearly two hours of combing the internet, though, I came up empty in finding the minimum internal diameter of a typical Rohloff rear sprocket. Not concerned with its splines... just if you were to slide the sprocket over a perfectly round cylinder, what would be the max diameter the cylinder could be before the sprocket wouldn’t fit? This small - yet elusive - critical dimension will tell me whether I would have enough “meat” on the body of the sprocket to work with for my custom application.
Might someone have one, and a pair of calipers, handy? If so, could ya do me a solid and take a quick measurement? Trying to get a feel for whether this is a feasible idea.
Thanks in advance!
-Jon