Posted by turbot on May 19, 2008, 12:43 pm
Hope this is the right place to post this, I've tried to find the answer
everywhere.
I need to know how much oil to put in the forks for an 84 Suzuki RM25.
Anybody know?
Posted by . on May 19, 2008, 1:47 pm
> I need to know how much oil to put in the forks for an 84 Suzuki RM25.
> Anybody know?
Drain the old oil out and remove the fork springs with the bike
sitting on a plastic milk crate or
similar work stand so the forks won't collapse.
Pour enough oil into each fork tube to cover the top of the damper rod
piston which the fork spring normally sits on.
The two oil levels should be within one millimeter (0.04 inches) of
each other, after you've stroked the forks a few times to circulate
the oil in the area below the damper rod pistons.
That will give you the *minimum* oil level that your fork requires. If
you add more oil, this reduces the air volume above the damper rod and
increases the air spring effect.
The air spring effect is exponential, you get four times as much air
spring if you reduce the air volume above the damper piston by half.
Posted by turbot on May 19, 2008, 2:20 pm
Thanks for the reply but I put the wrong year model. It's and 86!
wrote:
>> I need to know how much oil to put in the forks for an 84 Suzuki RM25.
>> Anybody know?
>Drain the old oil out and remove the fork springs with the bike
>sitting on a plastic milk crate or
>similar work stand so the forks won't collapse.
>Pour enough oil into each fork tube to cover the top of the damper rod
>piston which the fork spring normally sits on.
>The two oil levels should be within one millimeter (0.04 inches) of
>each other, after you've stroked the forks a few times to circulate
>the oil in the area below the damper rod pistons.
>That will give you the *minimum* oil level that your fork requires. If
>you add more oil, this reduces the air volume above the damper rod and
>increases the air spring effect.
>The air spring effect is exponential, you get four times as much air
>spring if you reduce the air volume above the damper piston by half.
Posted by The Older Gentleman on May 19, 2008, 5:50 pm
> Thanks for the reply but I put the wrong year model. It's and 86!
Makes you double dim, then.
--
BMW K1100LT Ducati 750SS Honda CB400F, SL125 & SH50
chateau dot murray at idnet dot com
"What you're proposing to do will involve a lot of time
and hassle for no tangible benefit."
> Anybody know?