running discs on a non disc frame

timthetinyhorse

im currently running a canti only frame that was built long before the relm of the disc brake becoming mainstream but im being drawn towards discs slowly as i run them on all my other bikes

what i want to know is has anyone used one of the adaptors that go on the canti boss and run down the back of the frame and if so have you had any negative effects using the adaptor

in my eyes a frame that wasnt designed to have discs may not have the required strength in the rear end to cope with the extra strain placed on it under braking and could cause damage to the frame

also has anyone got any pics of frames with these fitted as i imagine they may look a bit crap

thanks

rob

nicklouse

well first off does your frame have flat dropouts or not?

Or what is the frame?

timthetinyhorse

frame is a 1998 gary fisher supercaliber, what do you mean by flat dropouts?

nicklouse

i mean flat with no profileing on them as the adaptor needs a flat surface.

Is it an OCLV version?

timthetinyhorse

ah ok mate i cant think off hand about the profile

OCLV means nothing to me either, can you explain?

cheers

rob

paul.skibum

I don't think anyone but Nick knows what he is asking you.

My mate runs an aftermarket adapter on his old spesh full susser - its just an aluminium clamp around the dropout - I cant recall how it looks particularly but it seems to work better than his ageing Hayes rear brake! His bike has put up with years of heavy abuse (including dh race back in its early days) so I reckon the system works ok.

supersonic

Optimum Compaction Low Void.

Carbron frame.

nicklouse

so get some pictures up and we can see if we think it might or might not work.

timthetinyhorse

it dont matter now guys, this bike is getting downgraded to comuter status as think iv just got sorted with a carbon race bike :-)

paul.skibum

Apologies SS - all the mods know what it means! Kudos to you 8)

Ok so a carbon frame (esp an old one) might not be the best thing to be clamping ali adapters for disc brakes!

nicklouse

Noo a Kelin/trek etc manufacturing process.

Many current Treks are OCLV

http://www.trekbikes.com/us/en/company/technology/oclv/

paul.skibum

I like to think of bike frames as being simple and all the complex stuff going on outside - it seems I am deluding myself!

It may just be my own sense of paranoia but I just dont trust carbon....I expect everything to fall apart in a shower of plastic. Steel and ali thats what a bike should be made from!

timthetinyhorse

paul.skibum wrote:

Apologies SS - all the mods know what it means! Kudos to you 8)

Ok so a carbon frame (esp an old one) might not be the best thing to be clamping ali adapters for disc brakes!

no i wont be, new frame has disc mounts......other frame is ali but its just going to be for comuting now so sticking with the old faithful XTR vs

timthetinyhorse

paul.skibum wrote:

I like to think of bike frames as being simple and all the complex stuff going on outside - it seems I am deluding myself!

It may just be my own sense of paranoia but I just dont trust carbon....I expect everything to fall apart in a shower of plastic. Steel and ali thats what a bike should be made from!

i have to admit i will be a bit scared riding the carbon bike for a bit uintill i get to trust it

supersonic

paul.skibum wrote:

I like to think of bike frames as being simple and all the complex stuff going on outside - it seems I am deluding myself!

It may just be my own sense of paranoia but I just dont trust carbon....I expect everything to fall apart in a shower of plastic. Steel and ali thats what a bike should be made from!

http://www.youtube.com/watch?v=-lsDXEEUlRE

supersonic

Pretty resilient eh?!

Now watch this!

http://www.youtube.com/watch?v=SDVpRSNtcPQ&NR=1

timthetinyhorse

will check the youtube links as soon as i get home, hope they aint going to scare me

rob