OzVMX Forum

Clubroom => Tech Talk => Topic started by: John Orchard on May 22, 2013, 02:37:05 pm

Title: Hydraulic oil conversion to fork oil weights?
Post by: John Orchard on May 22, 2013, 02:37:05 pm

Any of you guys know what the hydraulic oil conversion is for the following fork oils?  Or know a website that lists it?

2.5wt
5wt
7wt
10wt
ATF (DX3)
15wt
20wt
30wt

Title: Re: Hydraulic oil conversion to fork oil weights?
Post by: Tomas on May 22, 2013, 03:49:35 pm

We use Castrol Hyspin AW68 viscosity and AW32 viscosity hydraulic oils at work. AW68 (68 cSt@40C) which is close to 20w and AW32 (32cSt@40C) which is close to 10w. There are some hydraulic oils for turbines that are AW20 (cSt@40c) which is close to 5w.10w and 5w may work in shocks and forks.
cSt@40C - ISO more accurate than "w" - SAE
This web site has conversions from "w" to cSt@40C for some suspension oils
http://www.transmoto.com.au/fmx/products/7799233/
Hope it helps

Title: Re: Hydraulic oil conversion to fork oil weights?
Post by: John Orchard on May 22, 2013, 04:31:28 pm

Thanks Tomas