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Brake Disc Skimmimng

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Normski View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Normski Quote  Post ReplyReply Direct Link To This Post Topic: Brake Disc Skimmimng
    Posted: 03 Jun 2019 at 07:53
Hi, Can anyone recommend somewhere who could skim/ reface brake discs please?
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lemon View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote lemon Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jun 2019 at 11:07
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jun 2019 at 12:01
Any engineering shop capable of skimming a cylinder head should be able to do it.
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 2019 at 01:36
What's it for? I'm not sure modern discs are meant to be skimmed, they're certainly not thick enough (ones I've seen anyway, and there's a minimum limit in any case), you just get new ones.


"Chicken nuggets don't dance on a Tuesday."
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Post Options Post Options   Thanks (0) Thanks(0)   Quote theone&onlymin Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 2019 at 09:14
Tried to get my cast iron discs skimmed a coiple of years back by a few engineering shops and man in the shed. No luck. They all returned them .
Ended up buying some floaters so I did.


Cheers
Min


Edited by theone&onlymin - 05 Jun 2019 at 21:59
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 2019 at 10:38
Don't want to be sued if there was an accident afterwards. Your insurance might  probably try to wriggle out as well. 
"Chicken nuggets don't dance on a Tuesday."
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Chris950s Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 2019 at 16:55
I had my cast discs skimmed years ago by Star Engineering in Chelmsford. The minimum thickness is given as 5.8mm and mine are now thinner than that so I have bought new stainless steel disks from HMB Guzzi. They cost a bit but will outlast me.
Chris and Karen - Essex
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 2019 at 17:11
All Bike Engineering would be a good starting point for replacement discs.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 2019 at 20:23
Must have been about 2011, I was stocking up on parts for another rebuild of my 850 LM/Spada hybrid, I drove down to Motomecca to buy UK pattern front discs because they were a good price and also stainless. The chap who then manned the spares counter at MM (sorry can't remember his name!) said only got two pairs left, what's left of the first and only batch that the company were ever going to make because they found the insurance was too crippling to continue. So that was the end of that. Ouch








Edited by Mike H - 05 Jun 2019 at 20:26
"Chicken nuggets don't dance on a Tuesday."
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Normski View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Normski Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jun 2019 at 18:44
Thank you, I'll try the suggested and report back, may be a while!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote scootinstevey Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jun 2019 at 23:35
I would also recommend giving Nick a call at Allbike Engineering.
Based by the Blackwall Tunnel at Greenwich.   I recently got some discs for a Yamaha from him.  Very happy
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ianboydsnr Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jun 2019 at 23:51
they need ground, rather than skimmed, find someone with a surface grinder.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote iceni Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jun 2019 at 07:48
Originally posted by Ianboydsnr Ianboydsnr wrote:

they need ground, rather than skimmed, find someone with a surface grinder.

+1 to that, but, being picky (sorry, Ian) ideally, you need somewhere with a cylindrical grinder.  Some time ago I gave a pair of discs to an engineering company to be side ground but they either misunderstood or deliberately ignored my requirements, and faced them on a lathe, which was a disaster as both pads and discs suffered from pick up, rendering them useless.Ouch
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Post Options Post Options   Thanks (0) Thanks(0)   Quote scootinstevey Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jun 2019 at 08:26
try Race Engineering in Gt Dunmow, Essex,   ( behind Essex Triumph). I’m pretty sure he has a surface grinder. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 07 Jun 2019 at 09:19
Again, what bike is it for? For some older models (V50?) you can't just get new ones. Otherwise would be simplest. 


"Chicken nuggets don't dance on a Tuesday."
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