Magura Louise disc brake adapter to IS

[ash710]

I recently got back into bike in a huge way (tbh I never left) and I've bought the girlfriend a cheap, but decent bike to start keeping up with me on the rough stuff. It's a Carrera Jabberwock, I think it's an 02/03 - the frame made but Medina anyway and someone has spent some money on SRAM 9.0 Composite gearing and Magura Louise disc brakes. Unfortunalty the fork fitted was a Manitou SXe that had seen better days, so I swapped it for my old RS Pylso SL's as she wanted lock out too....

Problem arose when we got round to refitting the caliper - the old fork was post mount and the Rockshox's are IS mount. No problems I'll order a mount adapter which arrived today (Magura QM-11) just been out to fit it and it bolts to the fork fine, but the caliper holes are probably 3-4mm shorter than the post mount adapter holes

Are there two different sizes of post mount? Can anyone recommend which adapter I require?

Pics for reference:

^The Manitou SXe

^The Rockshox's plus Caliper

^His and Hers


Regards and thanks in advance

Ash

 

[cyfa2809]

how about a pic of the adapter?
it could be due to age of brake, some of the older brakes had different spacing (is it 51mm and now 74mm? :? ?)

 

[ash710]

Pic is as link: http://www.chainreactioncycles.com/Mode ... elID=21539
-OR-

I thought that 51mm was IS mount and 74mm was standard post mount? or vice versa. Didn't think they swapped over. Anyway the caliper holes seems to measure (without actually measuring it) 70mm?

I'm wondering now if this caliper is specific to the fork?

 

[dyna-ti]

If theres any room on the adaptor,you could file the holes to elongate them

 

[ash710]

note: picture links reattached.

I don't think elongating the holes is an option as the holes are threaded...

LBS didn't have anything in there spares that fitted either. Very bizzare

 

[Andy R]

Some of those Manitou forks were Hayes 68mm mount (like normal post mount, but 68mm centres. rather than 74mm).

Presumably Magura made some Louise calipers to suit this standard, to be fitted as OEM items.
So you need an adaptor IS to Hayes 68mm post mount, but where you'll get one from I have no idea - sorry.
I think that I'd just swap the caliper to an IS fitting version.