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PostPosted: Wed Oct 23, 2013 9:47 am 
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Anyone have a spare brake disc & bolts? I also need the two bolts that bolt the caliper on - or are they standard M8 or something?

Also, being a disc brake n00b, although it's a front brake will it fit 160mm or 180mm? Surely the different diameter requires different mounts, no?


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PostPosted: Wed Oct 23, 2013 9:52 am 
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I have a brake disc that you can have for postage, ill get some details on it later.


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PostPosted: Wed Oct 23, 2013 10:01 am 
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Great thanks - and do you understand the 160/180 mm thing? Are all front brakes 180 unless there's an adapter or something?


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PostPosted: Wed Oct 23, 2013 10:06 am 
retrobike rider
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you get the mounts according to the disc size, the mount is the bit that the caliper bolts to which inturn then bolts to the forks. most modern calipers are either post mount (where the mounting bolts m6 are bolted into the ends of the mount/fork or IS mount where they are bolted into the sides of the mount/fork.
most mounts will have a size on them reffering to the disc size they will accomodate.
thats about as much as I know.


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PostPosted: Wed Oct 23, 2013 10:12 am 
retrobike rider
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regarding disc sizes, as a general rule you can run up to 203mm on the front with the correct mount and the same on the back. running a large disc on the back can foul the stays so you need to measure first but inless you have an odd hub/fork combo up front (like older hope) you can run pretty much any size you want. 180 is the norm I think but a lot of people go for 203 for the extra stopping power/bling factor.
also superstar components are selling a lot of their floating rotors off cheap to clear them
http://superstar.tibolts.co.uk/product_ ... cts_id=455 for the rotors
http://superstar.tibolts.co.uk/product_ ... cts_id=359 for the mounts
http://superstar.tibolts.co.uk/product_ ... cts_id=546 for the bolts


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PostPosted: Wed Oct 23, 2013 11:46 am 
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Aha, ok gotcha thanks for the explanation, and those links

In that case the mount on my forks says 160-180 so I guess that means it requires a 180mm rotor?


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PostPosted: Wed Oct 23, 2013 12:02 pm 
retrobike rider
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samc wrote:
Aha, ok gotcha thanks for the explanation, and those links

In that case the mount on my forks says 160-180 so I guess that means it requires a 180mm rotor?

yea 180 front 160 rear. standard issue brakes. just to be clear if you use that mount on the front you need a 180 and if you took the mount off the front and used it on the rear a its a 160.


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PostPosted: Wed Oct 23, 2013 12:37 pm 
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Great, thanks for the explanation!


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PostPosted: Wed Oct 23, 2013 1:34 pm 
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widowmaker wrote:
I have a brake disc that you can have for postage, ill get some details on it later.



Unfortunately the 2 I have are 160 mm :(

If anyone wants them they can have them !


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PostPosted: Wed Oct 23, 2013 6:28 pm 
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I want them after all! PM'd


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