Move disc rotor

[Peter.Bridge]

So, I fitted the new front hub motor wheel to my Carrera intercity disc 8 and swapped over the front disc rotor on to the hub motor wheel. The edge of the hydraulic brakes is rubbing against the spokes. Can I put washers on each of the rotor screws to move the rotor outwards ? Or maybe file down the brake housing ?

 

[soundwave]

id try push it out a few mm with washers b4 u start grinding it

 

[Nealh]

All of the hubs I have bought arrive with a 2- 3mm grey nylon rotor spacer .
Rather then use individual washers Peter make a one piece disc spacer with aligned holes , a bit 2mm Ali sheet will do the job.

 

[Peter.Bridge]

All of the hubs I have bought arrive with a 2- 3mm grey nylon rotor spacer .
Rather then use individual washers Peter make a one piece disc spacer with aligned holes , a bit 2mm Ali sheet will do the job.

Pardon our interruption...

 

[Nealh]

That's the one, saves messing about with washers and keeps the rotor evenly supported .

 

[Cadence]

Pardon our interruption...

The spacer your have linked to is nylon. Perhaps an alloy one would be better? I'm thinking that heat from the rotor could soften and distort a nylon one. Plenty of ally spacers on eBay.

 

[chris_n]

I wouldn't use nylon for that, I would grind the centre out of an old rotor (ask the local bike shop).

 

[Nealh]

The nylon should be fairly heat proof and not an issue.
One would need to be heavy handed braking with a 20" folding bike.

 

[matthewslack]

Nylon melting temp 256 degrees C.

 

[AndyBike]

Pardon our interruption...

You can get those in 2mm and 1mm too. The Hope ones will be consistently accurate, so maybe a better buy. Plus its produced int he UK by one of the top bike component makers, not 'UK stock' which means China.

Pardon our interruption...

 

[saneagle]

So, I fitted the new front hub motor wheel to my Carrera intercity disc 8 and swapped over the front disc rotor on to the hub motor wheel. The edge of the hydraulic brakes is rubbing against the spokes. Can I put washers on each of the rotor screws to move the rotor outwards ? Or maybe file down the brake housing ?

View attachment 61372

The solution we always used to use was to fit a larger disc and get the appropriate caliper adapter. You get that a lot when you have a 160mm disc, so, if that's what you have, go to 180mm.

The spacer provided is not meant for the disc. It's to compensate for the length of the screws when you don't have a disc.

 

[Peter.Bridge]

The solution we always used to use was to fit a larger disc and get the appropriate caliper adapter. You get that a lot when you have a 160mm disc, so, if that's what you have, go to 180mm.

The spacer provided is not meant for the disc. It's to compensate for the length of the screws when you don't have a disc.

That would make it look like it means business a 20" wheel with 180mm caliper. What adapter would I need ?

 

[matthewslack]

Pardon our interruption...

Post mount to post mount, for 160 old disc, 180mm new disc.

Many suppliers available.

Fiddly to set up because of domed washers to accommodate non parallel surfaces, but you only have to do it once.

 

[Peter.Bridge]

Pardon our interruption...

Post mount to post mount, for 160 old disc, 180mm new disc.

Many suppliers available.

Fiddly to set up because of domed washers to accommodate non parallel surfaces, but you only have to do it once.

Yes, so I think I have flat washer next to the head, then concave facing downward and then convex fitting upwards into the concave

 

[matthewslack]

First time with one of these, with it all sliding every which way as I tried to tighten up the bolts, if it hadn't been genuine Shimano I'd have thought only idiots could produce something so awkward!

 

[saneagle]

That would make it look like it means business a 20" wheel with 180mm caliper. What adapter would I need ?


View attachment 61388

You have a side mount (IS) 160mm front caliper adapter. You change it to a IS to post mount 180F one.

Pardon our interruption...