Disc mount adapter questions

[cyfa2809]

ohhhh!
so your really really really really really sure?
have you tried it yourself?

 

[MikeD]

I have an IS caliper on a PM fork with a 180 rotor and a Hope +20 adapter. That works. But there's no way I can see that the caliper could get any nearer the fork for a smaller rotor.

 

[IDB1]

With Mikes' testimony, backed up by ex Shimano tech . . . think I'm settled on the info

It looks like that pink one and the A2Z one are meant to be just the job but, having just thrown a few quids away on this adaptor, I'm erring on the side of caution (and listening to the voice(s) of experience) this time

 

[cyfa2809]

cool
i have no experience of is calipers so just do what the big companies tell me to do :roll:

 

[dbmtb]

Fair point - I wasn't going to send anyone to A2Z looking for an adapter Shimano didn't make now was I? But basically - the question I was answering was whether the Shimano adapter that the poster had bought was suitable for the job or not.

Looking at the specs, the AD-ISPM160 adapter from A2Z SHOULD work.

 

[IDB1]

cool
i have no experience of is calipers so just do what the big companies tell me to do :roll:

Ditto that... plus I've only just found out what IS and post mounts are

whether the Shimano adapter that the poster had bought was suitable for the job or not..

Ian . . . hereinafter known as. . . . the poster . . . . :cry: :cry:

 

[cyfa2809]

Looking at the specs, the AD-ISPM160 adapter from A2Z SHOULD work.

uh oh! it might work!!! :shock: :shock:

 

[MikeD]

Looking at the specs, the AD-ISPM160 adapter from A2Z SHOULD work.

/bangs head on desk

No. The AD-ISPM160 is for putting a PM caliper on an IS fork. Ian "The Poster" wishes to fit an IS caliper to a PM fork. The A2Z adapter to do that is the AD-PMF74, which also requires a rotor 20mm bigger.

The only question left remaining is what the KCNC adapter does. It claims to do what we're looking for, but (a) it looks exactly the same as a Hope +20 adapter and (b) it ought not to be physically possible to do that anyway

 

[IDB1]

I'm just settled with the info from here and working on a solution that I'm hoping will end with a better caliper, no adaptors and a 180 rotor. . . .

Or, if that fails. . . . a cheap 180 rotor and an adaptor

 

[MikeD]

a better caliper, no adaptors and a 180 rotor. . .

Did you mean "160" there? At risk of things getting even more confusing, any caliper will need an adaptor to use a 180mm rotor unless the mount on the fork is a 180mm native one (which it probably isn't, unless it's a big, long-travel fork). Standard PM caliper straight on to a normal PM fork will need 160. Add a +20 adaptor for 180.