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Can't set sag

dravnx said:
The Race Tech spring calculator specs .92 springs for a soft ride, which I prefer for my goaty road riding.
Click to expand...

RT has always been soft on spring recommendations.
 
afm199 said:
RT has always been soft on spring recommendations.
Click to expand...

If your bike has x pounds on the front spring and you want y inches of sag than there is a formula what your spring rate needs to be. Or at least so I learned in high school long time ago. Damping is quite a bit more involved.
 
Well, I hate to admit it but I will. I contact Fast Bike Inc, the distributor for Andreani and spoke with Butch, the guy who actually put the cartridges together for the P0. He was confident that they were correct. Anywho, Butch talked me through checking and setting the sag and everything is copasetic. It was my not understanding sag, what it does, how to measure and how to adjust. I read a bunch of procedures and still got it wrong. I also think there is some stiction going on that threw off some of the measurements. I'm going to have to work on that. When I bounce the suspension, the numbers come into the correct range. The rebound seems correct and the only way to check compression is by riding the bike and that'll have to wait.
 
Good on you for following up here.

If you wouldn't mind, could you post what you were doing before (incorrectly) and the correct way to measure? It might help someone in the future. :thumbup
 
I was trying to use the ziptye method and not bouncy the suspension.
Butch had me raise the front wheel off the ground and pull down on the wheel before measuring to get my free sag. It only made a 1-2 mm difference but it was there. He then had me sit on the bike and bounce the front end down a couple of times before measuring the loaded sag.
I figured you guys spent some time trying to help me, I at least owed you a follow up.
 
Glad you got it figured out!

Dave Moss has a good video detailing a possible cure for that stiction.
[YOUTUBE]https://www.youtube.com/watch?v=by-4W0QLuQI[/YOUTUBE]
 
Linky not worky but if its Dave's vid on replacing fork oil, I've seen it. Thanx
 
dravnx said:
I was trying to use the ziptye method and not bouncy the suspension.
Butch had me raise the front wheel off the ground and pull down on the wheel before measuring to get my free sag. It only made a 1-2 mm difference but it was there. He then had me sit on the bike and bounce the front end down a couple of times before measuring the loaded sag.
I figured you guys spent some time trying to help me, I at least owed you a follow up.
Click to expand...

:thumbup :applause Made for a good topic in the garage section at the very least while stuck inside.
 
Tom G said:
If your bike has x pounds on the front spring and you want y inches of sag than there is a formula what your spring rate needs to be. Or at least so I learned in high school long time ago. Damping is quite a bit more involved.
Click to expand...

Any formula is established by values set by the person building the formula.

Compare Race Tech, Ohlins, and Traxxion recommended spring rates. Race Tech is always quite soft.
 
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