V-Brake to Hydro Disc conversion? Which adapter? Please Help
BusterGonads
Posts: 10
Hi all, I'm new here so please bare with me.
I was given a hardtail a few months ago (Marin Bolinas Ridge), I think it's perhaps 2002 or earlier model - after about 4 months heavy use I managed to shear the rear axle, replacing it didn't seem to fix wheel wobble etc so I opted to buy a set of new wheels, so I've bought a pair of Mavic XM719s on Shimano XT disc hubs (decided I may as well upgrade to hydraulic discs).
However I've run into a potential show-stopper
Fitting the wheels today I'd assumed the frame would take discs as there was a pair of holes (unused) near the dropouts, so I thought they were for a disc caliper, however the gap between them looks much smaller than the 51mm IS or Post Mount fittings, it's more like 25mm - Here's a pic:
So my question is
1 - What are these holes for?
2 - Will I be able to fit a disc caliper? What adapter would I need?
Many thanks!!
I was given a hardtail a few months ago (Marin Bolinas Ridge), I think it's perhaps 2002 or earlier model - after about 4 months heavy use I managed to shear the rear axle, replacing it didn't seem to fix wheel wobble etc so I opted to buy a set of new wheels, so I've bought a pair of Mavic XM719s on Shimano XT disc hubs (decided I may as well upgrade to hydraulic discs).
However I've run into a potential show-stopper
Fitting the wheels today I'd assumed the frame would take discs as there was a pair of holes (unused) near the dropouts, so I thought they were for a disc caliper, however the gap between them looks much smaller than the 51mm IS or Post Mount fittings, it's more like 25mm - Here's a pic:
So my question is
1 - What are these holes for?
2 - Will I be able to fit a disc caliper? What adapter would I need?
Many thanks!!
0
Comments
-
They are eyelets for racks and mudguards.
An A2Z adaptor may fit that flat fopout.0 -
as covered in the FAQs"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
supersonic wrote:An A2Z adaptor may fit that flat fopout.
I've had a look there but I'm a complete numpty & can't for the life of me work out which one I should be using, is it this one you mean?
I can see how the QR fits into the adapter but how would it screw into place? The holes seem out of line with the ones on my frame :?0 -
"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown0 -
Thank you very much guys, really appreciate the quick replies!
Had a closer look and yup, makes sense to me so I've ordered one from Winstanleys, again thanks!
0 -
What does it take to get your wheel out when this A2Z adapter is used? What's the hassle?0
-
You have to completely remove the QR squewer, otherwise it's exacltly the same."Internet Forums - an amazing world where outright falsehoods become cyber-facts with a few witty key taps and a carefully placed emoticon."0
-
Ok, that's a relief. It's a pittty they never show the back of the adapter in any of the photos or adds.0
