Join Date: Nov 2009
Location: Louisville, Ky
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Dave's method will work on our bikes if just changing the fork oil, the only issue with the volume measuring method that Dave recommends is that we are also discussing changing the total volume of the oil to effect the air gap. So, if you were just doing a straight oil change, with no changing of air gap, then yes, Dave's method can work, with out much hassle at all.
If you were to dump the oil, and replace it with exactly the same amount that came out(which is still only an approximation, because there will still be some left in the internals) then your air gap would remain the same. Most of us are changing the air gap from the factory 72mm to 110mm(115personally). How much volume of fork oil do you remove to get the bigger air gap? Its only a guess if you cant measure it correctly.
The only proper way to measure an air gap is to remove the cap, preload spacer, and spring, and then measure how far from the top of the tube to the fork oil for the air gap you want.
2010 Daytona 675 SE- street bike
2007 Honda 600rr - trackbike
WoodCraft: Frame sliders, case savers, clip ons, rear sets, and rear spools
Driven 520 sprockets
Ohlins 25M Carts and TTX Shock