#### dduelin

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I want to raise the oil level in the forks about 10 mm. The ID of the fork is about 39 mm.

I figure the amount of oil I need to add is just about 12 cc. Correct?

- Thread starter dduelin
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I want to raise the oil level in the forks about 10 mm. The ID of the fork is about 39 mm.

I figure the amount of oil I need to add is just about 12 cc. Correct?

cm^3 = cc

10mm = 1cm

3.14 * 1.95cm^2 = 11.94cm^2

11.94cm^2 * 1cm = 11.94cm^3

Not sure my formula for area of a circle is correct 100%, but that should be right...?

Edit: I used diameter, fixed to use radius.

10mm = 1cm

3.14 * 1.95cm^2 = 11.94cm^2

11.94cm^2 * 1cm = 11.94cm^3

Not sure my formula for area of a circle is correct 100%, but that should be right...?

Edit: I used diameter, fixed to use radius.

Last edited:

I calculated 11.94cc.

I'll use this example in class tomorrow, thanks!

I'll use this example in class tomorrow, thanks!

Last edited:

AD, you squared the inside diameter, you should have squared the radius.

Thanks. I did arrive at the same 11.9 cc but it just did not seem enough oil.

Square that and multiply by pi is the area of a circle.

Multiply by 10 gives you volume in mm^3.

Divide by 10^3 to get cc.

Sorry, the formatting sucks, I'm on my phone.