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Old 04-21-2013, 09:52 PM   #25
Brtp4 OP
Yea, its a friggin L
 
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Joined: Sep 2006
Location: Bend, OR
Oddometer: 1,893
Version 2.0

XR280R v2.0

Rode the modded little XR quite a bit, and really liked it. It was a really forgiving bike, and the short wheelbase is good in tighter ST. However, being 220 lbs, it was being ridden harder than it's old-tech suspension was intended for. I finally hit my threshold of tolerance when I somehow hacked up my front wheel and crashed in some rocks.



I thought really, really hard about upgrading to something modern, and came within an inch of buying a rare, nice KTM 250 RFS bike. By now I hated the suspension, but I really liked several things about the basic package, mainly the simplicity and the turning. So, I decided to stick with the LRP (meaning dump even more cash into it) and see if I could improve it.

I started to gather parts for a CRF fork swap. I did this on another XR, and afterwards realized that I made a mistake on the triples I chose. The most people use early CRF triples, which have a 24mm offset. Stock XRs are 18mm. Putting the 24s on my other XR made turn in....strange. Forgiving, but also vague, no bite, etc, it actually turned better with the stock forks.

I wanted to avoid that, so I got a set of 20mm clamps from Scotts performance, which are made by Billet Racing Products:



I had a set of 2006 CRF250X forks, but they needed to be shortened to get as close to proper geometry as possible. One of the best CRF suspension shops is Precision Concepts in Riverside, CA. Precision Concepts is owned by Bob Bell, who has a long history with Honda's factory Baja team, and has assisted with suspension development for Honda. Additionally, at some point in the past he actually sponsored a team of XR250R's for the Baja 1000.

Anyway, PC shortened and revalved the forks, with a net increase in static height of 1".




NOTE: To balance the suspension and the height, PC revalved the rear shock, and took out a shim that added 4mm of length to the shock. The shock leverage ratio starts at 4.0:1 which means the ride height is now 16mm higher. 1" = 25mm, so I made up the difference with a taller rear tire.



The fork swap is easy, it's chasing down the details that is the hard part. I had to get a new headlight, which meant adding a handlebar switch, which meant a new lever / comp release combination, new fender, few other things:





Haven't made up my mind on the mirror:



And the final result:









The XR styling is really dated, and it hard to get around. However, the final result looks much better. This was taken this AM, just before a shakedown ride. Results of that next....

BP
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Atomic Moto.com
Bend, OR
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