Covering to disk brakes with no rear disk brake post mounts.. How do you do it? With an adapter??

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Covering to disk brakes with no rear disk brake post mounts.. How do you do it? With an adapter??
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flag Bfair41
Posted: Apr 3, 2012 at 6:14 Quote
I have a 2003 Gary Fisher Sugar 4+ with Genesis geometry (still font know how to find the right measurements, it feels small) I have post mounts on my fork but not my rear brake how do I make it compatible? Can you make it compatible?
flag jonbikes
Posted: Apr 3, 2012 at 10:21 Quote
Sadly there isn't any safe way to make this happen. Even if you could fashion something to clamp around the seat stay the stay just isn't thick enoungh to handle the forces of brake.
flag bigburd
Posted: Apr 3, 2012 at 10:23 Quote
I don't think anyone makes brake mount adaptors for non disk frames anymore , even if they did it's risky because frames with disc tabs are strenghtened at that point with thicker walled tubes or a brace to take the load of braking.
flag Ploutre
Posted: Apr 3, 2012 at 13:24 Quote
http://2btherapy.com/bikes/brake-therapy-conversion-kit

You could always try that (if it's still available ^^)
flag shiggy
Posted: Apr 3, 2012 at 13:34 Quote
Bfair41 wrote:
I have a 2003 Gary Fisher Sugar 4+ with Genesis geometry (still font know how to find the right measurements, it feels small) I have post mounts on my fork but not my rear brake how do I make it compatible? Can you make it compatible?

You should just need the factory disc mount, like this:
http://www.ebay.com/itm/New-Trek-Fisher-Klein-Rear-International-Disc-Brake-Mount-Black-160-mm-/170801945312?pt=Cycling_Parts_Accessories&hash=item27c496dae0#ht_500wt_853
flag eclone
Posted: Apr 3, 2012 at 15:02 Quote
http://www.torontocycles.com/Selling/Adapters.html
flag hampsteadbandit
Posted: Apr 4, 2012 at 9:29 Quote
you can physically convert most non-disc brake frames to run a disc brake using Brake Therapy or A2Z adapter systems but as others have commented, its not worth the expense because typically using a disc brake will cause your frame to fail on the seatstay / dropout weld

even the early frames with disc brake mounts suffered this issue, until the frame designers learned to use a thicker walled or larger diameter tube on the rear stays, or reinforce the dropout area with a bridge

it can be luck really whether your frame will crack?

I have seen a few old frames ridden for several years with disc adapters and no issues

but have seen more old frames crack within a few weeks / months of installing the adapter
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