question about nuts?

[pesty]

Just say for instance That I wanted to put Gold nuts on my rear sprocket to go with my new gold chain(your going to flame me for being a max power muppet arnt you )

Is it a simple case of undoing the old ones one at a time and replacing with the shiny gold ones? My mate says the threads arnt captive and will come out but he usualy talks rubish so i'd like some other opinions

Cheers

[Dunc B]

I've seen these gold nuts before,seem like they're made of chocolate with helicoil inserts!!!
Personally i wouldn't trust them,get some nice new ny-lock nuts if you must but rear sprocket coming loose is not funny
All the best
Duncan

[pesty]

Too late already ordered them boredom + credit card + internet =£200 on nuts carbon huggers and various other stuff I probably dont need

they have some sort of insert in them which I presume is to help them not come loose. My bike has normal nuts on at the moment any how.

Is my mate right about the threads coming loose if I take the nut of?

[bikerkeith]

Sprocket nuts usually need thread lock (e.g. Loctite) to make sure they don't come undone when you're doing big numbers.

[pesty]

I still havnt got the hang of this posting threads and getting across what I'm trying to say

The nuts go on Studed thread type bars that come out of the sprocket.

I was under the impression that I could just take of a nut at a time and replace with a new gold one (I have thread loc).

However my mate recons that the stud/threaded bar will come out with it or move further in which could cause problems. could this be true?

[victormeldrew]

You should be ok, you mate doesn't sound too clued up. Your spocket retaining nuts aren't subject to any major forces (which should be taken by the studs), all they need do is stay fastened, which they should do fine with thread lock and the right torque setting.

Are these just "plain" gold plated nuts, or a threaded insert inside a gold plated shell?

[pesty]

Not sure until they arrive

I got them from www.tastynuts.com

ill have a look

[victormeldrew]

Looks like they're gold anodised, not gold plated. And as they are sold as sprocket nuts I don't see that you'd have a problem!

[qualityscrew]

If you have bought aluminium nuts that are gold anodised, they should NOT be used in stress applications - and holding a sprocket on is definately a stress application! Aluminium 'pretty-coloured' fasteners are only intended for non-stress applications. If these are what you've bought, I strongly advise you not to use them for holding the sprocket on. You should only use steel, titanium or stainless and ensure the male thread is of the same material as dissimilar metals can produce different problems.

[victormeldrew]

You'd need to have your wheel on pretty skew-whiff to produce stresses on the sprocket retaining nuts IMHO.

I used to run a watercooled Yamaha RD400 with a nylon rear sprocket. Yes, thats plastic. It worked because the stresses are all in the plane of the sprocket. If there were any sideways stresses it would have bent like a banana. It didn't. Oh, and that was 70bhp+ in a very abrupt powerband (a race engine).

Aluminium should only be used in unstressed applications, absolutely, but this isn't necessarily as stressed as you'd think. Also I think the nuts concerned are sleeved anyway, and designed and marketed for this specific application, so let's not scare folk unnecessarily eh?