Jampot damping restoration - what's needed?

[Chazzyb]

You won't want to go down the Ikon route. I did it a couple of months ago with the sole UK agent and it was 12wk turn around and the cost was £495+VAT

Eek!

[Chazzyb]

I'm baulking at the thought of £600 for a pair of Ikon inserts. I could have a trick Ohlins shock for my BMW for that price. Both jampots still have a valve and seat in the damper tube, I guess there's not a whole lot of room for improvement. So once I have new seals on hand (one is leaking), I'll reassemble and nail them back on the bike and pretend it never happened.

Thanks all.

[SPRIDDLER]

I removed and stripped one this afternoon. Damper valve and seat still there. So I reassembled and refilled. I'll do the other tomorrow.

Was there any oil in them when you stripped them? If not, then there's the reason that the damping was non-existent (as you have no doubt realised).
Should be a lot better with oil in and you'll have 600 quid to spend on pies.

[Chazzyb]

Was there any oil in them when you stripped them? If not, then there's the reason that the damping was non-existent (as you have no doubt realised).

Surprisingly, yes. Mainly as I'd only changed the oil in them a few weeks ago and rode only 100 yards or so since.

[EddieDay]

The jampots on my '54 G3LS project bike are totally knackered so I bought all the seals and the leather spring seats from the Club spares shop. The issue I have is that the outer tubes are so pitted that I don't think the seals will be oil tight. I am considering asking someone to metal spray and grind them. An alternative is to get a good 1 1/8" fork stanchion and have it machined to replace the jampot outer tubes, which are the same diameter.
I found a good article called "Rebuild those Leaky Jampots" that was originally published in Motorcycle Mechanics. I think I have attached it.

Jampot_Rebuilding.pdf

[Left Coast]

Hi is there any way to adjust the damping or is it simply to change the grade of oil?
Lefty

[Chazzyb]

Hi is there any way to adjust the damping or is it simply to change the grade of oil?
Lefty

Adjust the damping?

I have put 40W oil in mine only this afternoon! I don't hold great hopes for it making a significant improvement.

[Brian 54G80S]

Ikon are an Aussie company and yes, they still do inserts to suit Jampots but they are very expensive. Expect to pay A$700 plus shipping. Last time I checked with them they had nil stock but it only takes them a week or so to build a set.