Race Tech spring calculator is off on the WR.
Posted June 03, 2008 - 04:55 PM
Posted June 03, 2008 - 05:26 PM
I weigh between 235 and 240. I bought the 5.8 rear spring. Thats what the calculator said I needed. I get it on and start cranking on it. I have no static sag at all and have 3.5 inches ride-sag in shorts, a t-shirt, and flip-flops. I got home and investigated and noticed that is says I need a 5.9-something if I had a YZ but a 5.79 on the WR thats heavier than the YZ. This was with me checking trail/enduro/desert. If I had clicked MX, it would have told me to get a 6.0. I'm not bashing Race-Tech by no means. Just a little info for anyone using that site as a referance(who's new to this like me). I didn't change the fork springs today because my oil didn't show up but just the rear makes a world of difference. What I want to get at is that if your weight is on the verge or you just like to jump a little, go for the next spring up. My 2005 doesn't plant the front tire all that great in the first place and the lower the rear end, the worse it turns. So, back on the diet for me again.
Make sure you are STANDING on the pegs, more-or-less centered over the bike. THEN measure the sag. If you are sitting, then your weight is biased toward the rear giving an incorrect reading. BTW, even a 6.0 will appear too soft (i.e., you have to dial in too much preload to get the proper sag) if you measure the sag while sitting. This problem is exacerbated for tall, heavy people (like me) as your normal sitting position naturally pushes you further back on the seat biasing your weight rearward. A smaller person can get away with sitting as their normal sitting position is closer to being centered over the bike.
Posted June 03, 2008 - 05:30 PM
Same as the jetting specs are often different for each bike in similar conditions.
I actually found that the calculator had the spring weight much too hard for my style I installed 0.40 springs up front when for my weight it should have been a 0.44, but the 0.44 was way-off. Now with the 0.4 its superb.....
Posted June 04, 2008 - 08:18 AM
Think race tech figures are made with their gold valves . that tends to be about 1 rate too soft for stock valving.
With that said, I'm planning on getting the suspension valved next year. I'm still learing so I thought I'd start here. I bought Factory Connection springs and in Parts Unlimited they are the same as the 05 YZ, front and back. Race Tech apparently uses a different fork spring for the WR than Factory Connection. Would they still redo the forks like that or would Factory Connection have to do it?
Posted August 14, 2008 - 02:12 PM
Posted August 14, 2008 - 03:35 PM
I weigh between 235 and 240. I bought the 5.8 rear spring. Thats what the calculator said I needed. I get it on and start cranking on it. I have no static sag at all and have 3.5 inches ride-sag in shorts, a t-shirt, and flip-flops.
I'm 235 and have the 5.8 spring.... but I run 4 inches of sag. most set up instruction I've seen say rider sag is 90mm to 110mm (3.5'' to 4.3"). .
in my very limited experience, the bike will ride very harsh if you don't make enough bike sag. So I pretty much just set up bike sag to 1 inch and lived with where the rider sag was. if its in the window then cool. if not its, time to lose weight or get a new spring.
and in regards to the YZ, I think it has a different leverage ratio.