Nuke Proof Hub - Help!!

velofrog · Apr 9, 2016

took the rear hub apart today as not been happy with it since i bought it on here, and discovered the spring ring that holds the pawls in place has a section missing!!

any ideas or anyone with a suitable spare for this?!

i tried an keyring but its too thick, the spring is only around half a mm in dia. spring wire is available on eBay, so could try making one, but a correct part would be preferable!

02gf74 · Apr 10, 2016

Tried contacting nukeproof? Unless ive imagined it, im sure ive seen pawls held on by an o ring, maybe worth a try but my gut feel is it wont last long.

Another option is to try those spring used on car balljoint covers.... if you can find one the right size and thickness, assuming they are strong enough.

ishaw · Apr 10, 2016

Is it not supposed to have a gap in it? How else would you fit it? You could try looking for snap rings of the right diameter?

velofrog · Apr 10, 2016

Re:

it's only about half a mm diameter and it should touch, with a slight bend at each end to stop it from spinning around the body, currently it won't hold in all three pawls....

velofrog · Apr 10, 2016

Re:

here's a close up of the spring

velofrog · Apr 10, 2016

Re:

does anyone recognise the body? maybe it's used in other hubs..... that might help me track down a spring?

danson67 · Apr 10, 2016

I've got a flat circlip 0.4mm thick which might do the job, but might be too stiff to spring properly:

It was in a sample pack from TFC (http://www.tfc.eu.com). If you have a look at their 'external wound wire rings' page they might have something which would do the job better.
Just send them an email sounding official and they'll send you a sample ring

All the best,

dyna-ti · Apr 10, 2016

It is only a length of wire so have you thought of making a replacement :?
Heated red hot then plunged into cold water should produce hardening enough to hold its shape.

I'll measure a marzocchi safety spring. Theyre the same simple design and you never know maybe the same size or reformed

But i stick to saying its simple enough to make :?

hamster · Apr 11, 2016

I don't think it's functionally necessary, just there to aid assembly. Campagnolo hubs have a similar construction and no spring. All you need to do is tie a loop of cotton thread round the pawls, fit it halfway into the hub, then snip the cotton. Job done.
When the pawls are inside the hub they will be unable to move outwards as they are retained by the hub ratchet.

danson67 · Apr 11, 2016

And the Campag ones actually came with the tool to hold the pawls in:

But as you say, a loop of thread will do the job just fine. I'd forgotten about that trick

All the best,

Nuke Proof Hub - Help!!

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