Setting up 2014+ 450f for Sandy Mx


14 replies to this topic
  • jc6711

Posted October 13, 2014 - 07:35 PM

#1

So this past weekend I went too the most sandy track in the area (75% of our tracks are sand). I was riding my 450 and it was doing alright as usual (stock suspension). I then get on the 93 kx 125 I have that's got old soft suspension bent bars and a shitty clutch. I have never had so much fun on a bike before. It would go exactly where I wanted too and corner way better then the 450. The bike tracked extremly well and never had to fight it.

By the end of the day I was able to ride the 450 better by mimicking the 125 riding style ( the biggest thing was not allowing it to engine brake)

Any way what can I do to make it handle like the 125? ( yes I'm really asking this). I really can't drop any weight from a dirtbike so its gonna have to be in suspension setup.

I am a C-class rider, 21 years old, 160lbs, and 6'.

  • Goforaride

Posted October 13, 2014 - 08:51 PM

#2

So this past weekend I went too the most sandy track in the area (75% of our tracks are sand). I was riding my 450 and it was doing alright as usual (stock suspension). I then get on the 93 kx 125 I have that's got old soft suspension bent bars and a shitty clutch. I have never had so much fun on a bike before. It would go exactly where I wanted too and corner way better then the 450. The bike tracked extremly well and never had to fight it.
By the end of the day I was able to ride the 450 better by mimicking the 125 riding style ( the biggest thing was not allowing it to engine brake)
Any way what can I do to make it handle like the 125? ( yes I'm really asking this). I really can't drop any weight from a dirtbike so its gonna have to be in suspension setup.
I am a C-class rider, 21 years old, 160lbs, and 6'.

I am no expert but I live 15 minutes from the oregon dunes and the only local track is sand. So I have some experience. I'm 165lbs. This is what I have found to work in the sand. Front: .47 springs out of a '14 yz250f. Clickers stock. Forks up 5mm in the clamps. Rear: 110 race sag with the stock spring. Clickers 2 in from stock and hs comp at 2 turns out

  • souliog

Posted October 14, 2014 - 10:01 AM

#3

I would say the 450 is too much power for you...try a 250f and learn to go fast on that first.



  • jc6711

Posted October 14, 2014 - 10:38 AM

#4

First off I'm not selling my brand new bike. The power is fantastic and I have been riding it for a year and it's NEVER been been am issue for me. If anything the power in the sand makes it alot easier in the deep stuff. I mean if all I road was this deep track I would be looking for more power.

The issue is in the chassis setup and some riding techniues. Not the bikes extra power.

  • JS264

Posted October 14, 2014 - 08:24 PM

#5

You need lighter fork springs. 

 

Install .47 fork springs 5.5 shock spring (2014 250F springs)



  • jc6711

Posted October 14, 2014 - 09:13 PM

#6

Your local, the track I'm talking about is dyracuse. Also ride pine, motosplat, a lot which isn't as sandy.

  • 250premixer

Posted October 15, 2014 - 09:51 AM

#7

Stock suspension is set for 180 pound vet rider so it's probably too stiff for sand and being 160lbs.



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  • JS264

Posted October 15, 2014 - 12:14 PM

#8

Your local, the track I'm talking about is dyracuse. Also ride pine, motosplat, a lot which isn't as sandy.

 

Just swapping those springs will make the bike feel like a completely different machine.  Gets rid of the dead heavy feeling. 

 

Run the Fork rebound out around 11-13 clicks out with the stock fork reb stack.  If you ride harder dirt or a real choppy track, you'll end up running the rebound 16 or 17 clicks out to get it to not get head shake and turn well.  The forks are pretty good stock, but the shock needs a little work to get it to track well.  I can fix up the valving for you sometime if you are interested.


Edited by JS264, October 15, 2014 - 12:15 PM.


  • souliog

Posted October 16, 2014 - 04:52 AM

#9

I bet the fork springs from a 2006-2013 YZ250F (0.46 front) and a rear spring from a 2014 YZ250F(5.7) would be perfect and you can find them for less money on ebay. Also an OEM Yamaha rear spring is titanium...


Edited by grayracer513, October 16, 2014 - 07:54 AM.
removed offer to sell parts


  • moto867

Posted October 16, 2014 - 07:11 AM

#10

The older springs won't fit in the new forks. The new springs are longer.

  • jc6711

Posted October 16, 2014 - 10:06 AM

#11

What models are interchangable? There is a set of stock 2014 250f springs on eBay but they are close too the price or racetech springs.

Also how close is race techs calculator?

  • Goforaride

Posted October 16, 2014 - 10:47 AM

#12

For the fork springs its 14-15 only. As for the shock spring, I believe the yz450 has had the same spring dimensions since '09 at least, also certain year honda, kawi and suzuki share the same rear spring dimensions

  • grayracer513

Posted October 16, 2014 - 10:49 AM

#13

The YZ250F spring will fit.  I think the stock rate for the '14 250F is .47 kg/mm.  YZ250's all use the older fork like the '06-'13 bikes.



  • Goforaride

Posted October 16, 2014 - 10:50 AM

#14

What models are interchangable? There is a set of stock 2014 250f springs on eBay but they are close too the price or racetech springs.
Also how close is race techs calculator?

Just take your time. I got a set of brand new '14 yz250f pull offs from ebay for $65

  • Denaki

Posted October 18, 2014 - 06:41 PM

#15

Don't forget to go up 1 tooth on the rear sprocket





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