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IN ORDER THAT YOUR SHOCK
ABSORBERS REMAIN CONSTANT
Constant volume shock absorbers have a small membrane in the cork (drawing 4).
This membrane, thanks to the under air volume, compensates the volume when the
piston shaft
goes in bodies of the shock absorber.
But the air contained in this pocket compresses, creating heat. This heat will
have the same
effect than thinner silicone oil, but you have no control on it.
The solution is to pierce 2 holes of ø 2mm in the foot of the cork. (pics 1
to 3)
Then you can fill shock absorbers with the piston shaft completely exit.
Move the piston as usual and let the air bubbles disappear.
Fill until 1mm of the
of the edge and screw the cork slowly.
The excess of silicone oil will flew by the thread.
Below is the ranks of silicone oil I use for GT car with foam tyres:
FRONT: 1500 to 2500 cps
REAR: 2000 to 3000 cps by variation of 500.
I make my viscosities with industrial silicone oil by mixing 500 and 5000.
For set-up the spring pre-load,
I use nylon parts of 4 & 2mm thickness, maded by SIFA
wich can be mount and dismount without putting off the spring. (pic 5)
PS. For those who live in country where lawers are quicker than our cars, protect
your hands, eyes etc..
Don't forget that solder iron are hot, AC current is dangerous, griding and
percing tools, manuals or automatic, can also cut you ! Oil and unnatural alcohol
are not to drink. Be careful when crossing the road. This site and contributors
of this site are not responsible if you misanderstood those texts or don't be
careful with tools.