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Adding pressure to KS Lev Integra seat post

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Adding pressure to KS Lev Integra seat post

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flag lewiscraik
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Posted: Feb 10, 2018 at 14:13 Quote
Whilst swapping saddles the other day I discovered the valve for adjusting the air pressure in my KS Lev Integra seat post, so thought it would be a good idea to add a few psi to speed up the return of the seat. Big mistake - it turned out to be slower, especially annoying as I didn't test it in the work shop, so only noticed on a ride.

When I next connected my shock pump to test the pressure it had dropped significantly. I can only work out that this happened when I was disconnecting the shock pump. In order to get the pressure back I had to pump it to the maximum 250psi, then it dropped to roughly 150psi. Is this bad technique on my side? Or are there shock pumps available that are easier to use when the valve is recessed?
flag ZacHinton
Posted: Feb 13, 2018 at 3:53 Quote
When you screw your pump on and pump it up to 250 psi, it's 250. When you unscrew the pump you will lose the volume of air that's in the hose from pump to Schraeder valve. If you screw if off and back on again it will be much lower. Maybe also wind in the barrel adjuster near the remote before doing this. You can fine tune the return speed with this. Does that help at all?
flag lewiscraik
O+
Posted: Feb 13, 2018 at 14:43 Quote
ZacHinton wrote:
When you screw your pump on and pump it up to 250 psi, it's 250. When you unscrew the pump you will lose the volume of air that's in the hose from pump to Schraeder valve. If you screw if off and back on again it will be much lower. Maybe also wind in the barrel adjuster near the remote before doing this. You can fine tune the return speed with this. Does that help at all?

Thanks, that's what I thought was happening. I thought the barrel adjuster only controlled the actuation, and the pressure controlled the speed, but I will try that.
flag lewiscraik
O+
Posted: Feb 23, 2018 at 7:20 Quote
Adjusting the barrel adjuster only tweaks if it deploys or not. Not the speed.

I feel like a bad workman, blaming my tools, but I don't think my shock pump is suitable for the recessed valve on the KS Lev Integra.

photo

Just connecting and removing the shock pump dropped 60psi and removing it dropped the pressure to 0.

photo

The photo may not show it well, but the connector on the shock pump is almost flush with the top of the seat post, which makes removal a slow process - which probably doesn't help with losing pressure.

Pumping the post up to 250psi (the maximum), then removing the pump drops the pressure to the point that the post barely comes back up.

Can anyone recommend a shock pump that works with this type of dropper post?
flag Cruzer29
Posted: Jun 20, 2018 at 1:00 Quote
Good day
I’m have the same issues with my daughters post, I have at 250 psi and she’s slow going up, bought my son the same post same day installed both the same and his is at 200 psi and goes up fast. I’m lost, did you learn any tricks or issues ?
flag Dethphist
Posted: Jun 20, 2018 at 19:26 Quote
Take the collar that the seat bolts go through and move it down on the post to get it out of your way. That should help make room for fingers. Then, start turning the screw end for the valve until it's loose enough to rotate the whole pump assembly with both hands and have it undo the valve at the same time. Spin the whole assembly really fast and it should go alright. Slide the saddle collar back up after you're done.

That's how I do mine, and have no issues.
flag lewiscraik
O+
Posted: Jul 1, 2018 at 3:21 Quote
Dethphist wrote:
Take the collar that the seat bolts go through and move it down on the post to get it out of your way. That should help make room for fingers. Then, start turning the screw end for the valve until it's loose enough to rotate the whole pump assembly with both hands and have it undo the valve at the same time. Spin the whole assembly really fast and it should go alright. Slide the saddle collar back up after you're done.

That's how I do mine, and have no issues.

I’ve just tried moving the collar down, but it doesn’t improve access. I think it is just a case of getting the technique right.
flag slydero
Posted: Apr 2, 2020 at 14:45 Quote
I was digging around for a solution to this as well. Found a vid where the guy pumps it up to 275'ish PSI. Once released, it drops to the range he was looking for... 230'ish.
flag Ithillien
O+
Posted: May 17, 2020 at 10:15 Quote
I found that a good quality shock pump will not lose any air. I was using my buddies older pump. And it would lose so much air as I was unthreading the coupling that it made it pretty much useless. I went and got a digital RockShox shock pump and never looked back. The valve engagement is so minimal that you lose next to nothing from your original set pressure.
flag Maverick-dm
Posted: May 17, 2020 at 15:03 Quote
It's purely down to the individual pump that you use with this model of post.
My usual pump performed exactly as you described.
I used my second cheap pump and it works ok.

Try a different pump. Better still; purchase a pump that allows you to de-couple the pump from the valve prior to unscrewing the pump fitting from the valve.
flag ecnonasinoslednam
Posted: May 17, 2020 at 15:17 Quote
Get a pump with a longer valve connector, such as Rockshox.
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