With the newer Nine Continent cover design, none of these mods are required. Everything aligns perfectly, no need to dish the wheel and there is plenty of room for the disk brake. Actually, I think an 8 inch rotor would fit in the TidalForce frame. With the previous cover design, I had to go through a lot of frame mods to barely get the 6 inch rotors in.
There seems to be a lot of rear 9c kits out there but I haven't seen many setup with rear disk brakes. E-Tickets has done it with is AmpedBike 9c
but that's all I could find.
Since I've just finished installing mine and it was no walk in the park, I thought I'd share how I did it so it may help someone else in the future.
Here's my setup:
- Tidalforce S750 frame from oatnet
- Rear 9c (2806) laced in 26" wheel by e-bikes.ca (pretty well centered but not perfect)
- Avid BB7 Disk Brakes (arguably the best affordable mechanical disk brakes you can get)STEP 1: frame mods
This will be different for each bike, but since Oatnet sold a boatload of Tidalforce frames to ES member, it's probable that others will have to do the same.
The torque arm mount interferes with the disk, it has to go. (You can shim your way out of this, but you'll spread your fork A LOT). I simply removed it with my trusty dremel and 1/32" cut-off wheels.
The I.S. disk mounts could lose 1/16" to give more room to the caliper adapter.
Carefully removed with dremel and cut-off wheel, than filed flat.