501X/DB01R dampers

[muratti]

Hi,

I just built my new DB01R buggy and for the first time i built dampers without a cap (diaphragma) at the top of the cylinder. The manual says you have to fill oil until 1mm to the top. I rated that or is there a simple way to measure that? When taking too much oil it seems the piston isn´t able to fully compensate and if you fill in not enough and fully press the piston it sounds as if there are air bubbles inside.
Did i build something wrong? Any help would be much appreciated. I have been building many many dampers over the years but never without a cap.

Thanks in advance!

[Piman]

They are are supposed to have air in them as they are aeration dampers.

James

[jimmy]

I fill the shocks until they are totally full - put the cap on loosely, not quite fully tight - then slooooooooooly push the shaft in to let out excess juices.
Nip the cap tight and make sure the shaft will fully compress / check the rebound and make sure all the shocks are similar.

[jeroen206]

I use these in all my TrF dampers http://www.stellamodels.net/catalog/...oducts_id=2427

[Carno]

I bought the dampers seperately as the "TRF buggy dampers" and also did the 1mm on sight.
The thing is they supply small hex screws you can screw into the shock caps. But nowhere in the manual it specifies to do this or why one would do this.

Figured out later this is to be able to bleed the shocks from excess damper oil.

I imagine having more or less air will affect a certain characteristic of the damper behavement but i'm not really sure how.

Maybe someone can shed a light on the inner workings of the aeration damper?

[Fredrik Emilsson]

I use the bleed screws. Just drill a hole from the inside of the cap to open the bleed hole.


I fill the cylinder until they are full.
Put the cap on tight.
Push the shaft in slowly.
Tighten the bleed screw.
I think it works just fine.