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 Post subject: Bent front disc!
PostPosted: Thu Mar 28, 2013 12:10 pm 
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Posts: 1330
Location: braintree , and leytonstone
I have a 200mm avid front disc with slight bend (thanks FOD) ....now my mechanic pal says stick it in the freezer....i trust him but has this worked for you before?
and b4 i get any smart arsed answers .......yes i have taken it off the hub....lol!

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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 12:17 pm 
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Posts: 3539
Location: essex
It is unlikely to fix it once it thaws it will most likely go back to being bent.
i'd just hunt for a new one

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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 12:38 pm 
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Posts: 2135
Location: The land were time forgot
I found the two bits of wood and a club hammer didn't work for me.


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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 1:57 pm 
Posts: 1025
No need for a freezer, just leave it outside.

Your lbs should have a rotor truing tool


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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 2:35 pm 
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Posts: 500
Location: Stanford-le-hope
Or use a small adjustable spanner, rotate to bent section and carefully try and bend back.

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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 2:42 pm 
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Posts: 2082
Location: Southend
Find the warp then warm the whole rotor slightly with a heat lamp/ blow torch and clamp ithe warped bit in a vice, then leave it overnight so it cools very slowly, metal does a 'memory' but its pretty limited, alloy is even worse.

Remember putting skyway Tuffs and ACS Z-rims in the freezer, all it did was make the alloy hubs or spokes brittle, never straightened anything !

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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 3:08 pm 
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Posts: 1330
Location: braintree , and leytonstone
Dunno only ever snapped my z rims never bent em!....lol!

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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 3:44 pm 
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Posts: 500
Location: Stanford-le-hope
Watch this. if you don't have a truing tool, as i said before a small adjustable spanner works.

http://www.youtube.com/watch?v=nHdQkm14JVw

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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 3:56 pm 
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Posts: 3593
Ive had ok luck clamping them in a vice and bending with a spanner. They are never quite the same.

A new one is only £13 so might not be worth spending too much time on.

http://superstar.tibolts.co.uk/product_ ... cts_id=197


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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 4:16 pm 
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Posts: 1330
Location: braintree , and leytonstone
Guys fantastic help ........cheers
jon that site only listing 180 or 203mm mine is 200mm or am i being a div!

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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 5:08 pm 
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Posts: 3539
Location: essex
I'd get a 203 and then pop a spacer under the brake if needed but you will prob find it goes straight on

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www.pinkbike.com/u/nwmlarge/


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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 6:57 pm 
Posts: 10
Brian i have a avid 203mm you can have, £5 bargain


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 Post subject: Re: bent front disc!
PostPosted: Thu Mar 28, 2013 10:03 pm 
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Posts: 1330
Location: braintree , and leytonstone
Sweet adam mate i can come and get if you text me to let me know when your home dude!

you booked that uplift yet?

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 Post subject: Re: bent front disc!
PostPosted: Sat Mar 30, 2013 5:10 pm 
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Posts: 1330
Location: braintree , and leytonstone
You was right andy it needed a spacer!

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 Post subject: Re: bent front disc!
PostPosted: Sat Mar 30, 2013 6:42 pm 
Posts: 10
Is it ok ?


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