Worth skimming this disc?

stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

It's very close to the runout limit of 0.03mm. (I think the official engineering term is exactly one midges ballhair off at 0.028mm). So it'll get through this MOT but only just.

There is 4.1mm of disc left. The service limit is 3.5mm.

Enough meat there to be bothering with? I'm not sure how much gets taken off when they do a skim?

EDIT: Probably looking at £30-40 for skimming. £230 for new discs.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

jimspeed · World Chat Champion Joined: 05 Mar 2010 Karma :

can you not find someone with a big enough lathe?, if it was mine i would turn it so it just scratched the surface off the lowest bit and you do have .6m to play with which to a good bloke is plenty. say take 0.08 in total maybe.
just me and i would do anything to avaoid paying that much for new discs Embarassed

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bacon · World Chat Champion Joined: 09 Jan 2009 Karma :

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

For the mot - rarely seen them check in that much detail.
Also, often if you hide the limit marking, they won't bother to check.

Gashead Harry · Nitrous Nuisance Joined: 22 Mar 2008 Karma :

steven_191 · Nearly there... Joined: 31 May 2009 Karma :

only 2 reasons why i would ever skim a disc

1 - it has a lip that makes installing pads difficult, and then i would only really cut the lip down

2 - i dont like that it has and uneven surface

ive never bothered with number 2

if its close to the limit why take more off?

Walloper · Super Spammer Joined: 24 Feb 2005 Karma :

I thought a Baw Hair was 0.003"
Never mind a Lathe operators accuracy.
I worked with a Grove crane driver who could lift a 6 ton engine a Baw Hair no problem.

I would pay £30-40 for a skim.
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alun111 · World Chat Champion Joined: 31 May 2007 Karma :

I'd say put it through it's MOT first and if it passes the brake efficiency test and there are no problems leave it (unless you experience negative problems yourself). If it fails then go for a skim..... or possibly better still... look for a s/h disc.
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stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

I should have phrased that differently.

It'll get through the MOT this time with a small argument as to how significant the slow speed pulsing of the brake lever is on the rolling road. I can categorically state it's within service limits and I know the tester well enough that he'll believe me.

However, it WILL pulse. It did last year and it's worse now. No problem at higher speeds but I really ought to do something about it.
I'l pop it in for a skim and if it lands up too thin, I'll just have to get new ones.

I'm planning to swap the forks and callipers for a VTR front end in the near future so I don't really want to be fitting new pads only to throw them in the bin after a couple of thousand miles when I fit 4-pot callipers (it's a VFR750).
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Is that VTR as in SP1/2 or fireblade Confused

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stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

G · The Voice of Reason Joined: 02 Feb 2002 Karma :

Erk - well should be a few around as I thought storm owners often tried to swap them for blade ones etc Smile

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stinkwheel · Bovine Proctologist Joined: 12 Jul 2004 Karma :

chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

If you are going to swap out the front end anyway I would consider the skim.
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chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

Or a happy medium?

https://cgi.ebay.co.uk/Honda-VFR-750-1992-FN-Front-Discs-1990-1993-FL-FM-FN-FP-/290415230071?cmd=ViewItem&pt=UK_Motorcycle_Parts&hash=item439e18bc77
____________________
Well, you know what they say. If you want to save the world, you have to push a few old ladies down the stairs.
Skudd:- Perhaps she just thinks you are a window licker and is being nice just in case she becomes another Jill Dando.
WANTED:- Fujinon (Fuji) M42 (Screw on) lenses, let me know if you have anything.