Vixen rear uprights

[Astacus]

OK, I may not like the answer to this question, but here goes.

I have just taken both my uprights to a local engineering firm to have the pivot bars replaced and new bearing shells pressed in. I was quite surprised when I got them back, to find that the new bars moved freely in the casting (before I pinched up the pins).......is this normal. I was expecting it to be a tight fit.

(holds breath).....

Edited by Astacus on Wednesday 21st September 12:19

[heightswitch]

When new they slide in but are a fitted size. Their shouldn't be any noticable slog. the pinch bolts stop the rotation and steel / alloy wearing against each other. They do freely slide in and out but their shouldn't be any ovality in the casting.
N.

[Astacus]

Many thanks Neil, that kind of puts my mind at rest. I was a bit concerned because of course the central portion of the rod is rusted, being open to th elements, and I was worried that pressing the rod out out of the casting might have wrecked the bore of the hole.

Cheers

[heightswitch]

Astacus said:

Many thanks Neil, that kind of puts my mind at rest. I was a bit concerned because of course the central portion of the rod is rusted, being open to th elements, and I was worried that pressing the rod out out of the casting might have wrecked the bore of the hole.

Cheers

It can do. When they are really bad they should be cut flush centre bored and machined out. When you build up you can make up a small inspection plate and fasten it to the casting hole with a couple of tapped M4 domeheads after firstly copper greasing the exposed pin inside the casting. this stops all the heartache in 5 years time when you strip and service them.

N.

[Astacus]

heightswitch said:

It can do. When they are really bad they should be cut flush centre bored and machined out. When you build up you can make up a small inspection plate and fasten it to the casting hole with a couple of tapped M4 domeheads after firstly copper greasing the exposed pin inside the casting. this stops all the heartache in 5 years time when you strip and service them.

N.

Nice idea. I might just do that!