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About brian389

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  1. brian389

    For the Die-Hard Yamaha Fans

    I was there at the Indy mile in '75, in the in-field, a couple hundred yards from the finish line, and I can tell you this brought back memories of one of the coolest experiences of my life. Kenny was, is, and always will be one of the baddest dudes to throw a leg over a motorcycle.
  2. I had a C3/C4 fusion 12 years ago-ruptured disc pushing against spinal cord (I'm 52 now). They came in thru the front of my neck to perform the fusion. 3 doc's said it was absolutely required (by the way, this was a whip-lash injury from windsurfing) so I got it done. They told me no mountain-biking, skiing, moto, anything like that ever again. I did a 100K mountain-bike ride in Colorado 5 months later and have been doing moto (just did Glen Helen) for the last 9 years. I wear a Leatt and RXR chest protector. The quality of the neurosurgeon is extremely important, so shop around for at least 3 opinions. Try to find a sports-oriented guy that wants to get you back out there. I don't know the extent of your injury (specifically) but in general, Doc's always take the most cautious route. Litigation is just too expensive these days!
  3. brian389

    2009 kx450f twitchy & pushing in corners... arrgg! fix?

    RDP in Denver has a set-up for the '09 that lowers the rear-end (via the shock), and revalves fork and shock, but uses stock off-set. It now wants to lean over in the turns, no skipping or bouncing out, turns extremely well, and, in general, handles very well. I've ridden several other '09 KX450's that had suspension work and off-set changed, but none of them compare to this set-up. Believe me, it's worth a phone call to hear what they are doing.
  4. brian389

    Pros/Cons 09 KX450F(Help)

    The scary part is that for $400-$500 in suspension work, you can make it WAY better! Just make sure you get it done at the right place.
  5. The deal is the bike won't handle/turn correctly if you don't do both the forks and the shock, so I suggest you forget fixing one without the other. Give them a call to find out exactly what the cost will be. I picked up another second per lap this week with the new sprocket (51) and tires, and believe it is the best bike I've ever ridden (and I've ridden more than a few......) so for me, for 4-5 hundred bucks it's a way better value than a pipe. I've had several people come and ask what I've done to turn up the wick so much the last couple weeks and I gotta say it's the bike, 'cause I'm still the same old fart I was a few weeks ago-just more pumped to go racing now!
  6. We use transponders, so I benchmark my lap times week to week against 4 key competitors, and the difference in lap times is very consistent. Last night, on a 95 second lap, I knocked off 3 seconds/lap, which blew my mind. I'm usually slower the 2nd moto (old and tired) but laps were 2 seconds/lap faster! Managed to hang with guys I don't normally hang with. Worn tires weren't helping me, but the darn thing is just much easier to ride all over the track. On a couple nasty sharp-edged bumps that would typically buck me around, it just gave a thud and stayed straight down the track. Forks are very plush, no sharp smacks that I used to get. The thing just wants to lean over and rail the turns-with worn tires I could only push them so far, but it is very much better in the corners relative to before. Not beat up after the race (2 8-lap moto's) and didn't have the arm pump I usually get. Best money I've spent on my bike in a long time.
  7. Race Day Performance in Denver has a new front/rear suspension set-up for the '09 KX that doesn't require the link or the off-set triple clamps. I was running 20mm (e-axle) and went back to stock off-set. They lower the rear-end via the shock instead of a link. They have a Team Green (many, many years experienced) rider that does the testing. I've tried a lot of set-ups and this one is radically better than previous. I just got it back and only got an hour on the new set up, but it turns very well, sits down in the corners, and gets rid of the shakes landing off jumps into braking bumps going into the turns. Will race this week and see what it does for my lap times, but it seems very, very good so far.
  8. Arm pump comes from lack of cardio conditioning-you can't pump the blood out of your arms fast enough. Work on that and the arm pump will go away.
  9. brian389

    Picked up a 2009 KX450

    RDP in Denver has the 09 KX450 suspension valving dialed. Fork pressure spring is too stiff and mid-valve also. They also change the shock quite a bit. It's worth it to have them do it. Makes a huge difference. I run quite a bit of sag and have pulled the axle back 2mm. Now it squats down in the turns and stays there very nicely.
  10. brian389

    Honest, Mostly-Unbiased Opinions

    I'm 6'1" and find the Honda too cramped. I have the 09 Kaw, and now it's dialed in, it's great. My buddy is 6'3" and he had to build up his seat, and do a lot of other things to deal with the ergo's.
  11. brian389

    20mm offset clamps ride review 09 KX 450

    I thought it would be heavy, and understand the whole unsprung weight thing, but honestly there is little difference in weight (holding them in your hands, as the solid axle is smaller in diameter, and the cylinders that go through the fork clamps are plastic. So maybe a couple ounces, but worth the benefit (in my opinion) because of the advantage adjustability gives you. After you've played with it a while, you can adjust for tight supercrossy tracks vs faster open courses and really notice the difference.
  12. brian389

    20mm offset clamps ride review 09 KX 450

    I am running a recluse e-axle at 21.5 and it is very planted/turns great also.
  13. brian389

    09 KX450 handling compared to RMZ450/YZ450

    Once you have the suspension valved correctly and chassis balanced, steering. Push it hard into turns and it comes around very controllably and stays very planted. Very smooth into, through, and out of the turns. All that goes away if the suspension and front to rear chassis balance is not dialed. You could say it's more like a 2-stroke than some other 450, and you can definately ride it like that, but it pivots from the center of the chassis when it's set up right.
  14. brian389

    09 KX450F Sag setting

    I agree with your logic, but at 100mm, the rear-end over-powering the front end which, in the case of the 09 Kawasaki, is causing the push. MXA says 100mm, but also says run the Pro Circuit link, which lowers the rear end by (you guessed it) 12 mm which is why they run 100mm sag. The cornering issue with the stock 09 is finding the correct chassis balance, and for me, at 165lb, it is closer to 112 mm of sag (109-112), running 22.5mm off-set (recluse e-axle), and forks set up 5mm in the clamps. The front end sticks much, much better now-no push at all, and it squats down in the corners and rails out, even on flat, hard corners. In berms, it no longer wants to creep out or over the top anymore and seems to lay in very precisely. All-in-all, the chassis is now balanced properly. How I got here is that I had another experienced racer watch me ride, and he could see the rear end too high going into the corners, particularly bumpy corners. It was counter-intuitive to think the issue was not enough sag because the front end felt stiff (too stiff pressure spring) and choppy going into corners. In general, it wasn't settling or compressing into the corner. So now it does, and turns very nicely.
  15. brian389

    09 KX450F Sag setting

    Guys-the 09 KX450 turns much better with more sag than you would normally run. With stock rear suspension, 109-112 lets it squat down into the turns and lay into the ruts much, much better. The pressure spring in the fork is too stiff if you are under 200lbs, so the fork will still chatter over the small stuff. An e-axle is a cheaper way to pull the front in and then the front will feel really planted in the turns. No push at all. The pressure spring needs to be changed to smooth it out, though.