Rear trunnion: grease or not?

[CharlieB]

Should you grease the rear trunnion & if so what with? Obviously they're nylon on steel.

One of mine has worn out very quickly although on taking it apart the steel tube does seem a bit rough.

Do the current ones vary in quality I've just ordered a pair from Paddocks?

[Richard B]

I'd assemble it with Castrol 'Heavy Grease' or 'LM Bearing Grease'. Should'nt wearout that rapidly, maybe  something wrong, loose, worn?

[heraldcoupe]

CharlieB wrote:

Do the current ones vary in quality I've just ordered a pair from Paddocks?

I have to say I'm not altogether happy with the machining on those I've had in recent times. The plastic is usually OK, I intend to have a word with my tame machinist to see what it would cost to get some decent tubes made.
Grease the tubes with copperslip or similar on initial assembly, not so much for lubrication but as an insurance policy for nest time you have to dismantle it! Make sure you get plenty between the bolt and steel tube,
Cheers,
Bill.

[CharlieB]

heraldcoupe wrote:

...... as an insurance policy for next time you have to dismantle it!

May not be long if the last one's anything to go by  :(
Presumably they should last for years?

[heraldcoupe]

They're a consumable, but you should be getting a few years out of them even on a daily driver. I assume the plastic is what's wearing on yours?
Cheers,
Bill.

[CharlieB]

Yes, I think so although the tube feels rough & has a bit of a burr on one end. I'll stick a mic on it later, d'you know what the diameter should be?

Superflex do a poly version but I don't see why it would be any better than standard.

[heraldcoupe]

CharlieB wrote:

Superflex do a poly version but I don't see why it would be any better than standard.

Very strange, I don't see why they would want to make the bush softer than standard.
If the tube's outer surface is uneven then it will wear the plastic at an increased rate.
Cheers,
Bill.