Rear Disc Brake Adaptor - Gary Fisher Paragon 1999

[towny]

hi, new to this forum, i have a 1999 Ally Gary Fisher Paragon of which i have recently had powder coated and am upgrading with new wheels and discs at Xmas. My left side chain stay has 2 calliper locating holes which i thought i would be able to use with my new calliper plus with the aid of an A2Z parallel adpator. unfortunately this adaptor doesn't fit my frame and i am reluctant to weld locating lugs onto my newly coated frame. I am currently fabricating a flate plate adaptor that will sit on the drop out and will be secured on these 2 lugs and via the QR and a small M5 threaded hole possibly designed to hold paniers. ( A bit like the DM-UNI)
Does anyone know if the stress and strain of using a bracket will affect my frame or does anyone have any other ideas or experience with any other brackets on the market.


Thanks Dave

 

[Baulz]

torontocycles.com sells an adaptor that will work on your frame.

 

[big.eck]

i have the proper hayes brakes inc the rear 22mm caliper doing nothing

pm me if your intrested

 

[1988_Ben]

I had the same issue with my Trek 8500 frame from 2001. I had the V-Brake version (but the same frame was used for the disc version), and then about 3 years ago decided to fit disc brakes.

Trek told me that A2Z used to supply the brackets to convert to chainstay IS mount. When I spoke to the UK distributor for A2Z parts, they said only A2Z USA could supply these. I then luckily found someone selling them on US eBay.

Here's a photo of my Trek running an XT Post Mount caliper, with PM to IS convertor bracket:

 

[1988_Ben]

I can't remember if this is the same seller, but it's the same part:

http://cgi.ebay.co.uk/a2z-Brake-Adapter ... 1c17f6fecb

 

[stanley]

I fitted one of the parrallel adaptors to my gary fisher tarpon, it worked really well, I was told they stopped supporting this format. surely it is only as simple as drilling the dropout to fit an adaptor, though I quess drilling it once the frame material, dropout thickness and dimensions have been checked against a compatible dropout.

 

[1988_Ben]

I fitted one of the parrallel adaptors to my gary fisher tarpon, it worked really well, I was told they stopped supporting this format. surely it is only as simple as drilling the dropout to fit an adaptor, though I quess drilling it once the frame material, dropout thickness and dimensions have been checked against a compatible dropout.

Why would anyone need to drill their dropout ? I thought the bike in question already had chainstay bolt holes to take an adaptor ?

 

[stanley]

yep see what you mean, this must have been a later way of doing the job,
the Gary Fisher I had, had bolt holes for a disc adaptor on the dropouts, it improvised the mudguard eyelet and added an extra one to take a disc bracket. this one is on the chain stays, looks far more substantial too.