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1
Technical / YZ250 Spring Rates
« on: June 03, 2012, 10:27:41 PM »
Forks stock .44, went to .45. Works perfect
Shock stock 4.9, went to steel 5.4. Not so good.
Rider: 49 year old 220lb, decent ability all around, former MX racer, can still beat my kid on his RM125 but not for much longer.

Thanks.  I?m questioning going to .45?s or .46?s on the forks. I hear there can be a lot of variance in ratings though, so when my manual lists the standard spring as .438, I?m assuming that?s basically a .44, and the next stiffer listed is a .449 which I?m assuming is a .45 rating, that might not make a noticeable difference if the spring ratings a little off.

Without riding it, I?d tend to agree that a 5.4 rear spring would be way too stiff to go with .45 fork springs.  Did Factory Connection suggest the 5.4?  Did you change it out for a softer rate yet? 

2
Technical / YZ250 Spring Rates
« on: May 24, 2012, 06:47:26 PM »
I did full Factory Connection on my 08 YZ250. I went with their advice and upped the spring rated at both ends. Everything worked better except on big bumps where the rear end would kick. The clickers did not help much. I left everything alone untill I rode at my favorite riding area which I ride very fast in sandy whoops with lots if tight turns (woods). Here I realized the back truly was oversprung. I put the stock spring back on the rear. I left the heavier springs in the forks since they worked great. Now all is improved over stock (not by a whole lot since it was so good to begin with) and handling is exactly like stock. I did make several changes on the front and rear clickers to get it working right with the softer spring. My 2 cents.

Do you know what spring rates you used, and did you use a steel or Titanium replacement spring in the rear?

3
Technical / YZ250 Spring Rates
« on: May 18, 2012, 12:41:09 AM »
Yep, they are ~$600 from DSP (havent priced Yamaha OEM which I'm assuming is KYB made) but I'm sure it about $600 as well.

I have a line on barely used one for under $100.

4
Technical / YZ250 Spring Rates
« on: May 17, 2012, 11:12:21 PM »
Figured this might be a good place to ask what everyone;s experience has been with different spring rates on late model YZ250?s.  Post up any rates, specs, front and rear that you?ve tried and how they worked for you, what kind of riding you do, what year YZ, etc.

I am pretty much narrowed down to what I want to do, but there was a bit of a debate when it came to the rear titanium spring being replaced with a steel spring (I hear an equal rate steel spring feels / is slightly softer).  Planning on sticking with a replacement Ti spring that I can get a great deal on, and going with a 5.1 (stock is 4.9) while taking the forks from their stock .44 to a .45 or .46

5
General Two Stroke Talk / Re: Help out a Milestone Mx theft victim
« on: July 01, 2011, 04:13:45 PM »
More details on this incident at VurbMoto...

http://www.vurbmoto.com/news/3621/stolen-camera-equipment-milestone/

6
General Two Stroke Talk / Help out a Milestone Mx theft victim
« on: July 01, 2011, 04:09:21 PM »
This was reported on by MXA... Scroll about 3/4 of the way down the page at the link below...
http://www.motocrossactionmag.com/Main/News/MOTOCROSS-ACTIONS-MIDWEEK-REPORT-7984.aspxwww.paypal.comI‚??ve got the first $100 on this effort, who‚??s next!?




I'd like to thank FMX Pro Bryce Hudson for initiating this idea and ultimately taking the first step to help out one of his moto brethren.  Thanks B-Hud!

-L.Barnes
www.exarteproductions.com


7
I know that guy... lol

8
General Two Stroke Talk / Re: What does your home track look like?
« on: January 28, 2011, 02:25:40 PM »
Barona Oaks Raceway


Pala Raceway.

9
General Two Stroke Talk / Re: Best VP Race Fuel
« on: September 14, 2010, 11:35:32 AM »

10
General Two Stroke Talk / Re: Best VP Race Fuel
« on: September 08, 2010, 12:57:43 PM »
So whats the easiest way to get a perfect, say 4:1 ratio if I'm not mixing 5 gallons of gas at a time?  It's be easy to put 1 gallon of race gas in a can, then put in 4 gallons of pump gas, add premix for 5 gallons and go ride... But what if I want the same ratio for only 2 gallons..??..

I'm not very good at math, but I'm thinking I'll need to put in 1.8 gallons at the pump (204.8oz) and then add 51.2oz of race gas for 256oz (2 gallons) total and then premix for 2 gallons to get it spot on..??..  Am I way off here. ???

11
General Two Stroke Talk / Re: Best VP Race Fuel
« on: September 03, 2010, 04:29:09 PM »
The modern Japanese 2 strokes are designed to run on pump gas.

Yes but they toe the line... The owners manual on a YZ calls for "a research octane number of 95 or higher".

I always ran octane booster to band aid it, but I finally had to run straight pump gas last weekend, and I can 100% say the bike sounded a bit ratty and just didnt seem quite the same. 

12
General Two Stroke Talk / Best VP Race Fuel
« on: September 02, 2010, 12:54:55 PM »
It's been awhile, but I need to track down some VP to mix in with my weekly pump gas diet... I ran C12 a few years back but I notice VP mas quite a few available.

I guess I could just read up on it all here, but some personal opinions / experiences never hurt.  I'm wondering the price per gallon difference as well.

http://www.vpracingfuels.com/page469683.html

13
General Two Stroke Talk / Re: Unadilla - Unadilla - Unadilla
« on: August 13, 2010, 04:50:49 PM »
I hope you've got that dent taken out of the pipe.... I'd say thats a horsepower or two across the spread and thats a small dent.


14
General Two Stroke Talk / Re: My 97 YZ 125 Complete Rebuild
« on: August 09, 2010, 01:36:14 PM »

15
General Two Stroke Talk / Re: My new 2 stroke hero! Mike Metzger
« on: July 30, 2010, 04:45:22 PM »
Quote
Suck it twitch!

That made my day.

Why, got you excited or something?

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