Topic: painting the finned exhaust clamps

[GroovieGhoulie]

My exhaust clamps are surface rusted and since I just took the exhaust off to remove and clean the sump, I figure it's a good time to clean them up.  What's the best way?  Sand the rust off, then use primer and then hi-temp silver paint or can I bypass the primer?  I figure some silver paint will do the job until I get new clamps.

Ideas?

[Paul]

Generally the high temp paint doesn't require a primer. "See reverse for details"
Sand down for adhesion only, you don't want to expose any more to rust, Dremil with wire brush to get into those "Hard to reach" places.

The one thing that I  never seem to be able to do is give a light dusting of spray, walk away and give it a few more coats afterwards,....I'm brave...keep spraying, until I see the damn paint running, and I know better.
(it's not a coverage thing but an adhesion thing...light coats, light coats..)
The high temp paint usually requires heat to cure, So if they are gonna' be off for a while....stick 'em in the oven.(after dinner - not before)

[cb(r)]

Generally the high temp paint doesn't require a primer. "See reverse for details"
Sand down for adhesion only, you don't want to expose any more to rust, Dremil with wire brush to get into those "Hard to reach" places.

The one thing that I  never seem to be able to do is give a light dusting of spray, walk away and give it a few more coats afterwards,....I'm brave...keep spraying, until I see the damn paint running, and I know better.
(it's not a coverage thing but an adhesion thing...light coats, light coats..)
The high temp paint usually requires heat to cure, So if they are gonna' be off for a while....stick 'em in the oven.(after dinner - not before)

see above quote for your answer.  I right with you on the spraying thing paul.

[grapppa]

I took a slightly different approach.  I removed them, put them in CLR (mild muriatic acid) which removed the rust. Then reinstalled them. However, the rust reappeared so now I am thinking of doing it all over and painting with clear.   Question: how were this finished originally? Did they have a clear coat to prevent rust?

[supersport_CB400F]

Painted chrome looks like dog #$%* too me, I’d rather see rust! Get them down to the chrome shop; I’ve just had  quite a few  parts done for the price of a night in the pub and they came out better than new.

[cb(r)]

Painted chrome looks like dog #$%* too me, I’d rather see rust! Get them down to the chrome shop; I’ve just had  quite a few  parts done for the price of a night in the pub and they came out better than new.

dont hold back.  tell the man how you really feel

[GroovieGhoulie]

The problem is that I am under a time crunch to get the exhaust back together.  I am in one place, the bike in another and I am visiting this weekend, hoping to get it buttoned back up.  I would chrome them, but unless I can get them in and out in less than a day, no dice.

[BobbyR]

I wire brush them. You can use a coat of silver VHT paint which will last for a couple of seasons. It is no a hard job to redo every few seasons, and keeps the bike looking good.

[supersport_CB400F]

Painted chrome looks like dog #$%* too me, I’d rather see rust! Get them down to the chrome shop; I’ve just had  quite a few  parts done for the price of a night in the pub and they came out better than new.

dont hold back.  tell the man how you really feel

Hey I'm a Brit and polite 

Goulie.....That’s a time scale that’s not good…live with the rust, paint sucks

[crazypj]

Several years ago a friend of mine who happened to be an electroplating specialist told me there were different types of chrome for different applications.
This is what I can remember triple chrome is a copper base, nickle middle and chrome outer skin. The actual chrome can be 'show' or micro-crack for exhaust systems. Show chrome is harder and denser, slightly less porous, basically 'shinier', the copper base seals metal surface. but chrome can peel off if it gets damaged through heat, etc.
I dont know what exactly micro-crack chrome is but it expands and contracts with exhaust pipes, maybe its why you  get the 'spider web' effect sometimes on older exhaust systems?
PJ