Showa twin chamber question

Trailryder42

Member

Feb 6, 2000

295

0

• Mar 16, 2004

• #1

In these forks, is the cartridge and outer fork tube completely sealed from each other so that the oil/fluid in one cannot interact with the oil/fluid in the other? Thereby allowing you to run a different oil/fluid in each? I am being told this is so but it goes against what I have believed all along.

Thanks for any info.
Derek

 

NO HAND

~SPONSOR~

Jun 21, 2000

1,198

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• Mar 16, 2004

• #2

That's correct, in Showa twin chamber forks, both chambers are separated and can use a different fluid. This is different than Kayaba forks where the oil is somewhat circulating.

 

Trailryder42

Member

Feb 6, 2000

295

0

• Mar 17, 2004

• Thread starter
• #3

So, has Showa changed the twin chamber design since those on my '94 RM250? Those circulate fluid between the chambers.

NO HAND said:

That's correct, in Showa twin chamber forks, both chambers are separated and can use a different fluid. This is different than Kayaba forks where the oil is somewhat circulating.

Click to expand...

 

NO HAND

~SPONSOR~

Jun 21, 2000

1,198

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• Mar 17, 2004

• #4

I know Honda started using the Showa twin chamber on their CR250 in 1997. I don't know about Suzuki.

 

S

shockdoc

Member

May 3, 2001

327

0

• Mar 17, 2004

• #5

The '94 RM Twin Chamber is/was the same design as now. 2 seperate chambers.



doc

 

Trailryder42

Member

Feb 6, 2000

295

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• Mar 18, 2004

• Thread starter
• #6

But I didn't think they were completely sealed from each other. I've changed the fluid in those forks before and when refilling them, I partially fill the outer tube and pump the rod to fill the cartridge and clear all the air out. So how can they be completely sealed from each other? I thought the 2 chambers circulated fluid with each other.