Fitting Cranks - grease the bolts?

[zimzum42]

When fitting cranks, does one grease the bolts or not?

 

[coldash]

When fitting cranks, does one grease the bolts or not?

I think this is one of these questions where you get "you must" / "you must not" answers. I have always used Copaslip on cranks (square tapers) and bolts and have never had any problems.

 

[zimzum42]

Is Copaslip the stuff to stop it getting rusted together, or the stuff which 'sets' to prevent the screw coming out?

Oh, and I'm thinking of the bolt, not the tapers!

Thanks for replies!

 

[rustychisel]

I do. Always.

 

[Proto]

What sort of cranks?

Square taper, yes (but not the taper)

 

[zimzum42]

Miche Advanced track chainset, mating with a shimaNO bb

 

[Proto]

Personally, I'd clean/de-grease the tapers before fitting and I'd use Copaslip on the bolts.

 

[coldash]

Is Copaslip the stuff to stop it getting rusted together, ...

That's it. Copaslip is an anti-seize compound which contains corrosion inhibitors. I've used it on my bikes and cars for years.

 

[beanzontoast]

That's it. Copaslip is an anti-seize compound which contains corrosion inhibitors. I've used it on my bikes and cars for years.

I bought a whopping tin (about the size of a large Lyle's Golden Syrup tin) from the car shop about 5 years ago and I'm not even 1/4 the way down. Great stuff.

 

[zimzum42]

I'm normally using the Wellgo grease, I think it's the stuff that stops it seizing, as opposed to the locking compound. Is that all good then?

 

[zimzum42]

Ooops, not Wellgo but Weldite

this thing:
http://togoparts.com/items/view_item.php?iid=3610&did=0&cid=77

 

[GrahamG]

Why not the tapers? I've always greased them and instructions with an ISIS crankset said to grease the splines.

 

[goo_mason]

I greased mine a while ago and have had no ill effects.

It'll hopefully help with pulling the cranks again at a future date.

 

[mickle]

Always grease the bolts, never grease the taper. In my book.

ISIS is different, refer to the manufacturers instructions.

 

[fossyant]

Square taper - I also copperslip the taper - never had a crank come loose - don't fance them corroding on !!!

So do, don't, do, don't - no real DON'T OR ELSE !!!!