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MK999
02-02-11, 10:49 PM
Bore size difference of 0.4mm, anyone tried it before? Does it cause problems with wobbling etc or do the tyres take it up/flex that much anyway?

Obviously you cant really use a 0.4mm spigot ring unless you wanna pay £400 for the use of the top dog machinist and his laser cutter to then crush them when you attempt to fit lol
AlexW
02-02-11, 11:01 PM
Whats it for? Wheels?

Wouldnt worry.
MK999
02-02-11, 11:03 PM
Whats it for? Wheels?

Wouldnt worry.

No I'm worried about the tyres on my cylinder bores wobbling :p
AlexW
02-02-11, 11:04 PM
Could have been for brake discs.
mowgli
03-02-11, 01:11 PM
0.4mm is clearance on wheel centres...the conical nuts/studs do the proper aligning
MK999
03-02-11, 02:27 PM
0.4mm is clearance on wheel centres...the conical nuts/studs do the proper aligning

Hmm not on my TSW's as they wobbled like fook until I got the spigot rings, I was sceptical about their importance as, as you say the tapered nuts should have it bang on assuming the PCD is perfectly drilled, I think though, they're not and it's the centre bore that does the real work?
Jonlem
03-02-11, 02:33 PM
From what I'm aware you should not rely on the bolt or studs to centre the wheel, the loading should be on the centre bore.
MK999
03-02-11, 02:36 PM
From what I'm aware you should not rely on the bolt or studs to centre the wheel, the loading should be on the centre bore.

I agree with this, it's just a difference of 0.4mm is next to nothing, think it's gonna be a case of suck it and see. Although wheels I'm after are attracting attention so we'll see lol
AlexW
03-02-11, 03:57 PM
Not enough meat to mill out the centre bore further so you can fit spigots?
MK999
03-02-11, 03:58 PM
Not enough meat to mill out the centre bore further so you can fit spigots?

Possibly, it is rather tight, but tbh my experience with spigots hasn't been great either.
Jack
03-02-11, 04:00 PM
I didn't think there was much/any load on the centre bore, nuts, studs whatever... was all held tight by the wheel being pushed against the hub?

I'd have thought a 0.4mm shift over to one side may well be enough to cause a noticeable wobble... My brake discs have a larger bore than the hub assembly, but then the bolts hold things pretty well centred due to the PCD
L14MNP
03-02-11, 04:05 PM
Be reet man.

I was running 101.4 PCD rims on a 100 hub with wobble nuts ( without enough thread showing tbh :/ ) and no centre bore allignment on the rear as the drum face doesn't have it. lol

I'm still here. have a Coke and a smile!
MK999
03-02-11, 06:53 PM
I didn't think there was much/any load on the centre bore, nuts, studs whatever... was all held tight by the wheel being pushed against the hub?

I'd have thought a 0.4mm shift over to one side may well be enough to cause a noticeable wobble... My brake discs have a larger bore than the hub assembly, but then the bolts hold things pretty well centred due to the PCD

Tight yes, concentric is the issue. Brake discs don't really cause much of a wobble, they're around half the diameter and many times less the weight of a wheel/tyre, which I imagine is why they fit so loosely on the hub safely.

Limplamp you're a massive pikey lol Back must have wobbled like fook
Jack
03-02-11, 07:20 PM
many times less the weight of a wheel/tyre
I dunno, my discs weigh a ton lol
MK999
03-02-11, 07:43 PM
I dunno, my discs weigh a ton lol

And you wonder why it handles turd :p
Jack
03-02-11, 11:18 PM
I prefer to stop faster than I accelerate, especially with 210bhp! Worth sacrificing a little bit (ok a fair bit) of unsprung weight.