motorrad Posted July 31, 2008 Report Share Posted July 31, 2008 (edited) Checked the Sag numbers on my 05 300 TXT pro the other day, and well Im fatter than I thought. so I cranked down on the rear spring adjuster. and now am looking to throw in some preload spacers in the front forks. I have the fork appart on the bench. (in sides out of the tubes) but cant figure out how to get the spring off of the dampening assembly. Lots of $$ parts in there I dont want to bust. what do I take off to get the spring off the assembly? I notice what looks like a pressed in pin at the bottom as well as a knotched aluminum what looks like a nut. as well as some other stuff UNder the existing spring spacer. Thanks guys. -Dave Edited July 31, 2008 by Motorrad Quote Link to comment Share on other sites More sharing options...
jse Posted July 31, 2008 Report Share Posted July 31, 2008 (edited) Checked the Sag numbers on my 05 300 TXT pro the other day, and well Im fatter than I thought. so I cranked down on the rear spring adjuster. and now am looking to throw in some preload spacers in the front forks. I have the fork appart on the bench. (in sides out of the tubes) but cant figure out how to get the spring off of the dampening assembly. Lots of $$ parts in there I dont want to bust. what do I take off to get the spring off the assembly? I notice what looks like a pressed in pin at the bottom as well as a knotched aluminum what looks like a nut. as well as some other stuff UNder the existing spring spacer. Thanks guys. -Dave Dave, Generally, there is a jamnut under the top cap to hold it from coming off. If you pull the spring/preload tube down you'll see the nut and an openend wrench can be put just under the nut to hold the spring assembly back so you can unscrew the topcap off the damper rod. Then pull down on the spring and take the wrench out (very carefully holding the spring, as it can fly off) and the spring/preload assembly can come off. Try to put the top cap back on exactly as it came off (maybe by counting the exposed threads under the jamnut). The Zokes must have the oil capacity measured by level, not volume, as the cartridges usually do not fully drain (I'll try to upload the spec.'s). The 05's should have the steel tubes and the level is different from the later aluminum ones. I don't know how far you want to go with the preload, but 5mm at a time and check them out by riding is generally safe. Jon ps. TrialsPartsUSA has an excellent site for suspension spec.'s on the GasGas at: http://www.trialspartsusa.com/tech.html . I couldn't get the Marzocchi exploded view to download, but you should be able to do it later some time. Edited July 31, 2008 by JSE Quote Link to comment Share on other sites More sharing options...
motorrad Posted July 31, 2008 Author Report Share Posted July 31, 2008 (edited) Great info. Thanks for the time it took to look all that up!... I have been reading everything I can about what everyone says to run sag numbers at... I get a variation... From the Gas Gas website, they seem to reccomend 1/3 rear and 1/6 front working out to be 54.6mm rear and 29.5mm front according to the suspension travel specs I found online for this bike... Poking around Ryan Youngs site, Yes I know its not a gas gas, but should be close he reccomends 60-70mm rear, and 40-50mm front... Quite a differance in settings if you ask me... So I dont know which to shoot for... I have found myself breaking out all my trials DVD"s watching them trying to see how thier bikes are set. My current numbers are Rear end Extended (bike off ground): 603.5mm Me on bike with gear: 500mm Current sag= 103.5mm Front end Extended: 196mm Me on bike: 150mm Current sag = 46mm Edited July 31, 2008 by Motorrad Quote Link to comment Share on other sites More sharing options...
jse Posted July 31, 2008 Report Share Posted July 31, 2008 Great info. Thanks for the time it took to look all that up!... I have been reading everything I can about what everyone says to run sag numbers at... I get a variation... From the Gas Gas website, they seem to reccomend 1/3 rear and 1/6 front working out to be 54.6mm rear and 29.5mm front according to the suspension travel specs I found online for this bike...Poking around Ryan Youngs site, Yes I know its not a gas gas, but should be close he reccomends 60-70mm rear, and 40-50mm front... Quite a differance in settings if you ask me... So I dont know which to shoot for... I have found myself breaking out all my trials DVD"s watching them trying to see how thier bikes are set. My current numbers are Rear end Extended (bike off ground): 603.5mm Me on bike with gear: 500mm Current sag= 103.5mm Front end Extended: 196mm Me on bike: 150mm Current sag = 46mm I understand your confusion, everybody will tell you different info. From my experience, Trials suspension settings, rider to rider, will vary more than than any other forms of competition because of the speeds, loads, obstacles and riding styles. We rely more on body movement and leg power to supplement our suspension and riding style has a lot to do with how we want our suspension to perform. Some riders will ride "weight forward" or "weight rearward" which will have very different effect on the shock and forks, for example. In Trials, sag settings are kinda like carb fuel screw settings, they are just a place to start and need to be adjusted to suit the demands of the engine-in the case of a fuel screw, and a rider-in the case of suspension. Rear sag setting has a tremendous effect on how the bike steers at the front, which I think a lot of riders may be unaware of. For my riding style (observers may call it "falling off style") I've found that it is easier to compensate for "bad" sag settings at the forks and a rear shock that is not set properly is harder to adjust for. I'd recommend that you spend some time trying different settings (only change one at a time in order to not "blend" variables being evaluated) and see how you like the change, chances are that you'll end up with settings different from what you read. Jon Quote Link to comment Share on other sites More sharing options...
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