powdercoating swing arm

[Peter Bowles]

Inspired by Melvilles project and his attention to detail, am thinking that the paintjob I did on my frame is a little shabby. Been ringing around for a few quotes to get it powdercoated and seems to be far more reasonable than I had imagined.

I can't remove the drive shaft from the swing arm as I dont have the correct tooling, and am presuming the heat from the powder coat process would be problematic if I left it in. Just want to check that this is a fair assumption..

Thinking I can either sand back and paint and try to match the colour of the powdercoated frame when it gets back - or take the swing arm to the shop and get the drive shaft removed - and reinstalled after powdercoating.

Any thoughts?

[Deleted User 72]

You are correct, the greasy drive shaft will ruin the powder coat. The part powdercoated must be immaculately clean. The hot grease will run onto the swingarm and it won't be clean anymore.

[Chuey]

The shop will sell you new pivot bearings and I think, a couple seals when the R&R the drive shaft. Here, in the US, it cost me a little over $200.00 when they did mine. Now I have the tools for both types of drive shafts.

Chuey

[Peter Bowles]

Interesting N/5, I had thought the problem would have been heat at the universal, didn't think of running grease.

Inner splines, mounting plate and universal are all sound, so will opt for painting methinks. No need to create more work than I need.

Pete

[vanzen]

I'll assume that you have a "cush" shaft.
Not a big deal to take it apart - but stand aside ... just in case ... XD.

[Peter Bowles]

Clymer warned of loss of limb or possible death for the home enthusiast to tackle this so I shied away. Though it looks like a jig would be pretty straight forward to make for the job.

Managed to get the steering head bearings out of the frame, so thats a win for today.

[vanzen]

Clymer warned of loss of limb or possible death for the home enthusiast to tackle this so I shied away. Though it looks like a jig would be pretty straight forward to make for the job...

My first adventure with dismantling a cush-shaft was also to PC a swing-arm.
The home-brew fixture was composed of 2 bar clamps and 2 pieces of steel plate ...
True, the compressed spring will store a massive amount of energy,
a potential projectile without aim or direction.
Designing and fabricating a "special tool" will demand careful consideration of those forces involved.
Be that as it may, I am alive and still have all my limbs.

[melville]

First, thanks of the level of detail thing. One caveat--I'm not riding it yet.......

If the swingarm you are disassembling is the stock piece for your R75/7, you don't have a cush drive IIRC. I got my solid shaft apart with a good Craftsman 2-jaw puller and a HF bearing separator. I clamped the u-joint in some soft wood jaws on my vise to loosen the nut. Leave the nut in place but a couple threads loose when you set up the puller, else the shaft will launch a considerable distance (or so I've heard) when it lets go.

Good luck!