02-apr Posted February 3, 2011 Report Share Posted February 3, 2011 Does anyone have any experience as to what grade fork oil I should use. The handbook 10/30 sounds a bit primitive and, if I recall the 70s, probably won't work too well anyway. I assume the forks are standard as regards spring rate and damper but will no doubt find out once I start using the bike. Thanks Quote Link to comment Share on other sites More sharing options...
b40rt Posted February 3, 2011 Report Share Posted February 3, 2011 You got a new bike Pete ? Try ATF, seems to work in everything I've tyred ? Quote Link to comment Share on other sites More sharing options...
jse Posted February 3, 2011 Report Share Posted February 3, 2011 You got a new bike Pete ? Try ATF, seems to work in everything I've tyred ? I'm pretty sure the TY are what's known as "damper rod" forks and usually take 15 to 20 weight minumum due to their design. ATF at approximately 7.5 weight would work in a cartridge fork (like the aluminum Marzocchi's) but is probably too light for the TY's. And I agree, ATF is good stuff and seems to work for a wide range of applications in Trials bikes. Jon Quote Link to comment Share on other sites More sharing options...
bestrcpilot Posted February 4, 2011 Report Share Posted February 4, 2011 I tried the 10w-30w and found the forks to stiff, then tried ATF and found the forks to much bounce in them. ie... to fast on the rebound and to easy to bottom out. I found that 15 weight fork oil to be about right. This was with a stock setup and stock springs. Quote Link to comment Share on other sites More sharing options...
02-apr Posted February 4, 2011 Author Report Share Posted February 4, 2011 I tried the 10w-30w and found the forks to stiff, then tried ATF and found the forks to much bounce in them. ie... to fast on the rebound and to easy to bottom out. I found that 15 weight fork oil to be about right. This was with a stock setup and stock springs. Thanks, I'm sure I usually use 10 in road bikes with firmer damping than I would want on a trials bike, but you will be right as I recall problems in the day with getting enough damping. How "new" is a 35 year old bike Ross? Should find how it goes at the Hydro end of month. Quote Link to comment Share on other sites More sharing options...
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