Discussion
It'll be fine presuming it is the correct size for the calliper/adapter you have.
Shimano adapters generally fit 160/180/200 mm rotors, some brands of rotors are made in different sizes (e.g. Hope and possibly Avid use 183 and 210mm IIRC).
You can try and bodge it in anyway, but you might find the rotor rubs on the calliper.
Shimano adapters generally fit 160/180/200 mm rotors, some brands of rotors are made in different sizes (e.g. Hope and possibly Avid use 183 and 210mm IIRC).
You can try and bodge it in anyway, but you might find the rotor rubs on the calliper.
Edited by frontbum on Friday 21st January 12:22
Yeah shouldn't be a problem, even the old metric / imperial thing 203mm instead of 200mm etc is usually no more than a little space on the caliper away from perfection. The outside edge of the discs are usually so non uniform - wavy etc that 3mm won’t make any difference.
Not always the case though, I've just come unstuck. Ordered a set of Hope V2 DH brakes, instead of the floating Hope discs ordered a set of Aztec fancy Dan ones instead as I'd used them before with Juicy 7's and Codes on my DH bike and they work really nicely. Sadly for me, Hope rely on a 'taller' pad rather than a 'longer' one like most companies do for extra surface on DH brakes so the disc only really hits the bottom half of the pads - bugger, less power than a cable disc.
Not always the case though, I've just come unstuck. Ordered a set of Hope V2 DH brakes, instead of the floating Hope discs ordered a set of Aztec fancy Dan ones instead as I'd used them before with Juicy 7's and Codes on my DH bike and they work really nicely. Sadly for me, Hope rely on a 'taller' pad rather than a 'longer' one like most companies do for extra surface on DH brakes so the disc only really hits the bottom half of the pads - bugger, less power than a cable disc.
While we're on the topic, maybe someone can help me before my head explodes. I have a bike with rigid forks with an IS mount and I'm running a Hope M4 caliper with a 203mm disc. All is well. Except I got a good deal on a bouncy fork and thought I'd see what all the fuss is about, but it turns out that the fork (RS Tora) has post mounts for the caliper.
It seems that I'm in a tiny minority that have this problem whereas if I had it the other way round, I'd have adaptors up the ying yang to solve my issues.
The only thing I can find that seem to offer hope (pardon the pun) is this.
But I'm confused by the +20mm part. If the caliper mounts to a standard IS fork and takes a 203mm disc, would this adaptor move it out further so that it would want a 223mm disc? If so, why do they not make a regular adaptor that doesn't change the disc sizing?
I did come across this which seems to be what I need, but I'm in denial because of the fact it's almost 5 times more expensive than every other adaptor they have!
It seems that I'm in a tiny minority that have this problem whereas if I had it the other way round, I'd have adaptors up the ying yang to solve my issues.
The only thing I can find that seem to offer hope (pardon the pun) is this.
But I'm confused by the +20mm part. If the caliper mounts to a standard IS fork and takes a 203mm disc, would this adaptor move it out further so that it would want a 223mm disc? If so, why do they not make a regular adaptor that doesn't change the disc sizing?
I did come across this which seems to be what I need, but I'm in denial because of the fact it's almost 5 times more expensive than every other adaptor they have!
Uriel said:
While we're on the topic, maybe someone can help me before my head explodes. I have a bike with rigid forks with an IS mount and I'm running a Hope M4 caliper with a 203mm disc. All is well. Except I got a good deal on a bouncy fork and thought I'd see what all the fuss is about, but it turns out that the fork (RS Tora) has post mounts for the caliper.
It seems that I'm in a tiny minority that have this problem whereas if I had it the other way round, I'd have adaptors up the ying yang to solve my issues.
The only thing I can find that seem to offer hope (pardon the pun) is this.
But I'm confused by the +20mm part. If the caliper mounts to a standard IS fork and takes a 203mm disc, would this adaptor move it out further so that it would want a 223mm disc? If so, why do they not make a regular adaptor that doesn't change the disc sizing?
I did come across this which seems to be what I need, but I'm in denial because of the fact it's almost 5 times more expensive than every other adaptor they have!
http://superstar.tibolts.co.uk/product_info.php?cPath=57&products_id=359 - Type 8, PM-PM F203It seems that I'm in a tiny minority that have this problem whereas if I had it the other way round, I'd have adaptors up the ying yang to solve my issues.
The only thing I can find that seem to offer hope (pardon the pun) is this.
But I'm confused by the +20mm part. If the caliper mounts to a standard IS fork and takes a 203mm disc, would this adaptor move it out further so that it would want a 223mm disc? If so, why do they not make a regular adaptor that doesn't change the disc sizing?
I did come across this which seems to be what I need, but I'm in denial because of the fact it's almost 5 times more expensive than every other adaptor they have!
Job done.
I had exactly the same issue as this a few years ago when I changed from IS forks to PM forks (also with older Hope Enduro 4 pot brakes). I had to buy the +20 adaptor and I contacted Hope to get them to make a 225mm disc to replace the 205 one. It might work out cheaper to buy a complete PM front brake off Ebay otherwise get the adaptor and see if the later "saw" type disc is compatible as you can get a 223mm one from here http://www.ukbikestore.co.uk/product/69/hope_saw_d...
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