joe@vwvortex

Installed my new wheels and noticed that the clear guard that I had put on the frame to protect it had been messed up. So I took off the wheel and when I reinstalled it I noticed that the edge of the disc (203mm Shimano Ice Tech) was really close to the chainstay. The hub is a bit wider at the dropouts with the WI Mi6 hubs compared to the Rolfs - enough where I have to spread the chainstays a bit to get it seated. Previously the disc was close but not like this. The Rolfs also had an spin on disc adapter and I'm wondering if that brought the disc in compared to the WI. I also tried two different Avid rotors which I have and it's the same. While it doesn't rub - I'm concerned when we get on the bike and stand and climb it might.

Thoughts? Wondering if I should go to a 200mm disc instead of the 203mm. A bit puzzled.

twocicle

WI is very good at sticking to specs, so I wouldn't doubt their spacing is accurate. As you pointed out, the thread-on adapter on your Rolfs is likely a little less outboard resulting in more clearance.

With steel skewers tightened up , the hub+ disc rotor should not flex much at all, if any. The clearance shown in your photo should be fine, though a bit harder to install & remove the wheel without touching the chainstay.

joe@vwvortex

Yeah - I was a bit worried so I reinstalled the Rolf. Here's the difference.

Paint on the chainstay is all messed up now - ugh.....

joe@vwvortex

Rode the bike yesterday - no issues - but man it's a ***** to put the wheel on and take it off. I've really messed up the paint when previously not a nick....

I contacted Co-Motion who for no charge will dimple the area if it's possible. I will know more on Monday after the frame guys check out the picture. Not bad considering it's a 10 year old frame.

tandem rider

I have an '05 Supremo frame with a rear disc. The mechanic put two small spacers between the brake and the frame. With a Phil Wood hub and a thin thread on adapter I have 2 cm. of clearance.

Team Fab

Can the disk be flipped over and installed backward?

Seems may give more room.

joe@vwvortex

Co-motion will do the frame modification free of charge. I'll be sending it in this week. I'd rather do something permanent so that I can not have to worry about marring the frame or using a different disc.

WillFam-Reno

Wow, that's over 3/4". Our rear disk has about 2mm clearance and is fine. I can not imagine 3/4".