Suspension Examination:

[Jakobi]

Yeah I went into some depth writing but when actually doing the work its a piece of pie. The more times you can flip the cart and then get a small purge the better. The air hides around the outer edge of the piston. Its a poor design.

On the mid I'I've been running this

MV Comp (from piston)
12x.10 - Bleed
20x.10 (3)
18x.1
16x.1
14x.1
12x.1
11x.20 (2)
15x.15
16x.15
0.4mm float

Rebound (from piston)
20x.10 (2)
12x.10 - bleed moved down to crossover
20x.10
18x.10
16x.10
14x.10
12x.10 - from BV
11x 2.5 - collar

I'm thinking of addressing a few things on the rebound, and possibly opening up the float. I may pull the 12x.1 from the bottom of the comp stack and then slide it over as a bleed on the rebound. Or maybe I'll pull the 12 from the bottom of the rebound, move it to the bleed, and then drop a 14x.2 in at the bottom of the rebound to beef up the HSR substantially.

I'll have to do some more thinking before anythings in stone though. Still got 15 hrs before its due for its next service so will hold out till then.

[n_green]

Another point of interest, Simmo have you measured your ics spring? Mine is a different length to Jakes (same length as Natos??).
Can't remember how that affects things though? Jake help a brother out?

[Jakobi]

I can't remember the length of mine, but maybe they are similar? I think 107mm rings a bell. I think you said yours were 100mm but I don't know how you accurately measured them if you didnt disassemble the ICS?

The PFP adj changes the preload on the spring, as does the length of the spring. The PFP has a range of around 10mm approx, and we all know what effect even a half a turn has on the fork action. Imagine the difference in feel between a spring of the same rate that has 7mm difference.

[n_green]

Originally Posted by Jakobi

I can't remember the length of mine, but maybe they are similar? I think 107mm rings a bell. I think you said yours were 100mm but I don't know how you accurately measured them if you didnt disassemble the ICS?



The PFP adj changes the preload on the spring, as does the length of the spring. The PFP has a range of around 10mm approx, and we all know what effect even a half a turn has on the fork action. Imagine the difference in feel between a spring of the same rate that has 7mm difference.

This time round I accurately measured them. They are 100mm. I pulled the pfp assembly apart to clean all the grease out of the comp clicker assembly.

[Jakobi]

I wish I could remember the length of mine. I'll check my notes in the morning. I may have wrote it down.

[n_green]

Based on my measurements the ICS spring rate is about 2.0 kg/mm.
Sound right?

[swazi_matt]

Originally Posted by Jakobi

Its the clearance where the bushing floats. So on the lower legs, there is a groove machined into the leg where the inner bushing locates. Not enough clearance and the bushing can bind up when the fork leg flexes.

ahh ok. so these are not like the sachs that rattle around in the tubes!?

[Jakobi]

Originally Posted by n_green

Based on my measurements the ICS spring rate is about 2.0 kg/mm.
Sound right?

Affirmative. Stock ICS is 2.0kg/mm - Nato had after market 1.8kg/mm installed with his. His BV was much firmer though.

Originally Posted by swazi_matt

ahh ok. so these are not like the sachs that rattle around in the tubes!?

Not at all. It still blows me away how much movement there is between the upper and lower on the Sachs, but with well over 300hrs on mine they have held up really well (with TTX carts). I installed them on the new bike for a ride early in the pic too. Could very happily run them on this bike.

[Jakobi]

Checked my notes tonight and I didn't document the length of the ICS spring! I should have wrote it down. I found some notes which I believe were the dimensions of Natos. His definitely floated around much more than mine. For some reason 107mm keeps popping to mind.

[Fred1956]

Originally Posted by Jakobi

Checked my notes tonight and I didn't document the length of the ICS spring! I should have wrote it down. I found some notes which I believe were the dimensions of Natos. His definitely floated around much more than mine. For some reason 107mm keeps popping to mind.

on the zokes I had down from the 13 model, 107mm was indeed the length of the ICS spring