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PostPosted: Fri Jun 07, 2013 10:23 pm 
Retro Guru

Joined: Sat Jan 30, 2010 9:33 pm
Posts: 507
Location: Bolton
Looking at that, it looks like you need your original adapter plus a post mount to IS adapter, as that caliper isn't standard post mount.


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PostPosted: Fri Jun 07, 2013 11:37 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider

Joined: Thu May 06, 2010 10:05 pm
Posts: 5638
Location: Aberdeen
Hmmm... I honestly don't know if there's an adapter that will sort that problem out.

I have just read this...
Quote:
Be aware there was an early Post mount which had mounting hole spacing of 69mm
... which may explain your caliper?

From this link here... http://www.bikeradar.com/forums/viewtopic.php?p=1590919

Maybe now would be a good time to fit a new caliper?


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PostPosted: Fri Jun 07, 2013 11:46 pm 
Retro Guru
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Joined: Sat Nov 17, 2012 1:48 am
Posts: 1384
Location: ,hyde
cheers Jimo,will look into that,i`m trying to finish this bike off cheap as poss for the young lad next door,so hopefully get it sorted cheapish.


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PostPosted: Sat Jun 08, 2013 9:35 am 
Old School Hero

Joined: Sun Apr 28, 2013 8:56 pm
Posts: 209
Location: Flipping between Wigan and Lincoln
Probably not what you want to hear but might it not be easier just to replace the caliper?

I have one of these:

http://www.ebay.co.uk/itm/406288-New-Sh ... 2a2d90dbaf

on the front end of my bike right now...


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 Post subject: Re: disc brake mounts?
PostPosted: Sat Jun 08, 2013 9:46 am 
Old School Grand Master
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Joined: Mon Jun 14, 2010 9:06 pm
Posts: 4421
Location: Herts UK
looks like you calliper is non-standard post mount. I have not come acorss any adapters to adjust for the nearness of the bolt holes.

Now if you mount the calliper in the lower hole - the other hole to what you have in the photo below - if the pad covers the disc sufficiently, then you can make you own adapter from a striup of rectangular alloy - you would need to drill 3 holes one correspdong to the post mount and the third tapped to M6 to bolt the calliper to...... but it is likely the calliper body will interfere with the DIY adapter.

***NO - just had another look and the calliper body would get in the way of the adapter - you could use two short strips.


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 Post subject: Re: disc brake mounts?
PostPosted: Sat Jun 08, 2013 12:21 pm 
Gold Trader / MacRetro rider
Gold Trader / MacRetro rider

Joined: Thu May 06, 2010 10:05 pm
Posts: 5638
Location: Aberdeen
02gf74 wrote:
you can make you own adapter from a striup of rectangular alloy


or... you could knock up an adapter with a couple of bits of Meccano? right? :lol:


For the cost of a new or good used caliper that will fit correctly, you might as well go that route, maybe not what you want to hear, but I sold some Clarks cable calipers for peanuts a few months ago (we're talking £5 each or something), so compare that to the cost of buying or making an adapter, and it begins to make more sense.


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PostPosted: Sat Jun 08, 2013 10:49 pm 
Retro Guru
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Joined: Sat Nov 17, 2012 1:48 am
Posts: 1384
Location: ,hyde
soounds like a new caliper then,dont want it to be to dodgy with a crappy home made bracket, :cry: :cry:


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PostPosted: Sat Jun 08, 2013 11:44 pm 
Old School Grand Master
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Joined: Mon Jun 14, 2010 9:06 pm
Posts: 4421
Location: Herts UK
nothing dodgy about a home made bracket providing it is of the correct material and shape - problem I can see you are goi ng to have is to "join" the two piece due to the calliper body being in the way but it can be done.

an example of a home made brake adatper - from 3 pieces of aluminium alloy.


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PostPosted: Sun Jun 09, 2013 8:32 am 
Old School Grand Master
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Joined: Fri May 01, 2009 7:11 pm
Posts: 8479
Location: Fircombe.
You may as well get a new caliper; once you've made up the bracket conversion you'll have the problem of sourcing new pads for a prehistoric caliper that probably wouldn't work very well in tipppy top condition


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PostPosted: Sun Jun 09, 2013 11:52 am 
Retro Guru
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Joined: Sat Nov 17, 2012 1:48 am
Posts: 1384
Location: ,hyde
suburbanreuben wrote:
You may as well get a new caliper; once you've made up the bracket conversion you'll have the problem of sourcing new pads for a prehistoric caliper that probably wouldn't work very well in tipppy top condition

your probably right,who has what for me cheap then???


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