400EX VS 250R thumb trottle

[Math]

I always have 400EX style thumb trottle on my previous bikes and liked them, but now I bought a new 250R with the original thumb on it. I have just opened the cover of my thumb trottle and I saw all the system of lever inside. Is this a good system or just a bunch of crap? I haven't tryed it yet because the engine is apart.
I have a 450R for sale and I would like to know if a should take the thumb trottle on it and put it on my 250R or just let everything like this.

[zedicus00]

250R thumb throttles are great, it set up like that to hav a shorter stiffer pull to open the throttle.... i prefer the R throttle

my gf has a 400ex throttle on her blaster, she likes it better then the R throttle.

[matt250r21]

I tried a 400ex throttle on my R because I upgraded to a 38 pwk carb. With the stock R throttle the lever was pretty stiff, so I tried the 400ex. With the 400ex it was almost to easy and I didnt like the feel. Also the 400ex would not open up the throttle slide all the way without mods to the throttle housing. The best setup I found was the stock R throttle and a softer spring for the 38 carb slide.

[QuadRacer041]

Originally posted by matt250r21
I tried a 400ex throttle on my R because I upgraded to a 38 pwk carb. With the stock R throttle the lever was pretty stiff, so I tried the 400ex. With the 400ex it was almost to easy and I didnt like the feel. Also the 400ex would not open up the throttle slide all the way without mods to the throttle housing. The best setup I found was the stock R throttle and a softer spring for the 38 carb slide.

matt is right the 400ex throttle will not open the the slide of the carb up all the way. i wouldnt use it.

Originally posted by matt250r21
I tried a 400ex throttle on my R because I upgraded to a 38 pwk carb. With the stock R throttle the lever was pretty stiff, so I tried the 400ex. With the 400ex it was almost to easy and I didnt like the feel. Also the 400ex would not open up the throttle slide all the way without mods to the throttle housing. The best setup I found was the stock R throttle and a softer spring for the 38 carb slide.

Where would someone get a softer spring for the carb slide?

[zedicus00]

take the stock spring to yur bench grinder and make it thin is a bunch of spots...

400ex throttles work fine if u cut the stopper out... though i prolly shoulda left the stopper on my girls blaster...

[gotlift]

Use a raptor spring stretch the coils out and cut to the same length as the R spring. Been using this for about 6 months.