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Canadian Daves JustKDX
XR 4 vs FRP .39's and spring questions in general
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[QUOTE="Braahp, post: 441947, member: 21441"] A few months ago I decided to revamp my front forks with Gold Valves and new springs. I thougt it would be cut and dried. What a nightmare of suggestions I got. I searched threads and must have called 10 different people and got 10 completely different ideas on what spring rate I should use. Race Tech and their online calculator as well as speaking with them on phone was useless. They suggested a .46kg spring. Yeah right...maybe if I was a bigtime motocrosser. Fredette made the most sense with his belief that anything stiffer than .39kg will beat you to death on the trails. Still getting different opinions I bought FRP .39kg springs and XR400 springs which I was always told were .40kg. The installation is so easy I ened up switching back between the FRP and XR400 springs to compare numerous times. With oem preload and 10mm preload. What woked best for me was the FRP 22lb springs with oem pre-load. The XR400 springs felt very simlar but I just didn't like the ride with only 10mm preload. Maybe the FRP springs worked best because of the GV stack specs Fredette setup for me. 10mm preload just felt like nothing to me....others use way less but I don't get it. I weigh 220lbs and the 39kg springs work wonders in the trails but bottom pretty easily on MX track. But hey, I rarely ride MX. The XR springs can be bought for about $60 Us dollars from Service Honda. Not sure what that is in Canadian. Its amazing how preload correlates with spring rate and travel stroke. I've got a handy dandy fork spring/preload spreadsheet calculator if anyone is interested just email [email]RippinR@citlink.net[/email] and I'll send it to you. You gotta just find what works best for you......one thing for sure its no cut and dried simple answer that all agree on as to which springs you should use. [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
XR 4 vs FRP .39's and spring questions in general
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