250-500cc wr 250 gearing

[ajaxauto]

2006 WR 250 gearing
stock is 13 /48
some use 14/48 for higher speeds
Any one try 14/50 how close to stock is that If i could use 14/50 and be close to stock that is where i want to be back close to stock then my stock wheels from my TE 510 would work as spares i have few new 14/50 gear sets i would like to use Plus they are the same as my 510
I still have the 125 but am trying out some set ups on a wr 250 for the kids

 

[johnnym]

You are talking about different combinations.
let me explain.
I used to run a 13/48 stock combo, then fitted a FMF Knarley header with a Powercore 2 silencer.
That made the gearing so short that I battled to keep the front down even as high a 4th gear.
I changed to 14/48 and the problem is solved.

going 1 up in front is equivalent to more or less 3 down in the back.
so if you are looking to go back to almost stock I would say go with the 14 /51 or 52 combination.
I presume you can get away with the 14/50 without much hassle, the bike will be very powerful low down.

 

[raisrx251]

What year is your TE? If it is a 2008 you better measure the metal where the sprocket mounts to the hub. They are thinner on the WR, at least on my '07 WR 250. I have a rear hub for the more thin WR that I would be willing to trade for the thicker if interested.

 

[ajaxauto]

What year is your TE? If it is a 2008 you better measure the metal where the sprocket mounts to the hub. They are thinner on the WR, at least on my '07 WR 250. I have a rear hub for the more thin WR that I would be willing to trade for the thicker if interested.

My TE is a 2006

 

[ajaxauto]

You are talking about different combinations.
let me explain.
I used to run a 13/48 stock combo, then fitted a FMF Knarley header with a Powercore 2 silencer.
That made the gearing so short that I battled to keep the front down even as high a 4th gear.
I changed to 14/48 and the problem is solved.

going 1 up in front is equivalent to more or less 3 down in the back.
so if you are looking to go back to almost stock I would say go with the 14 /51 or 52 combination.
I presume you can get away with the 14/50 without much hassle, the bike will be very powerful low down.

That is what i figured 1 up in the front is about equal to 3 down in the rear so if i go 14 /50 that would be just a little highter then stock
The bike has 14/48 on it now i will have to go ride it and see
The person i got it from would use 14/48 for hight speed gran prix races and the 13/48 for just about everything else
I just have a few sets of 14/50 plus the stock wheels off the 2006 TE 510 so i was hopeing to use that set up
The rear sprockets are all the same pattern from 2 stroke to 4 stroke
the front countershaft sprocket on the wr 250 is the same part # as the one on my 2006 TE 510 so trying to use as many parts from what i have in stock since there are so many parts off all the Husky that are the same

 

[Rusty 2]

That's really just a simple matter of converting both into gear ratios.
You just divide the rear sprocket teeth by the counter shaft sprocket teeth. 13/48 is a 3.69 ratio, and 14/50 is a 3.57,...so yeah they're pretty close.

 

[ajaxauto]

That's really just a simple matter of converting both into gear ratios.
You just divide the rear sprocket teeth by the counter shaft sprocket teeth. 13/48 is a 3.69 ratio, and 14/50 is a 3.57,...so yeah they're pretty close.

Wow Just like a car and to think we rebuild rear end here every day you whoud think i knew that Well you learn something every day thanks john

 

[Rusty 2]

Now see,...that kind of response just makes a guy glad he could help in any small way.

 

[stretchrcr]

Unfortunately, you can't use the 4stk rear wheel on the WR. It will go right on and look fine, but the sprocket is about 1/8th in out of line. The 4stk engine is wider.
Brent

 

[Xcuvator]

Unfortunately, you can't use the 4stk rear wheel on the WR. It will go right on and look fine, but the sprocket is about 1/8th in out of line. The 4stk engine is wider.
Brent

I checked at one time and have been under the impression that the hub P/Ns are the same? My spacers also measure the same.
The wheel sets have been switched between my WR and TE for the past few months and all has been good. So I dunno

 

[lookin4trails]

stretchrcr's information is accurate - the WR250 hub is about 1/8" narrower than the 4T hub (at the sprocket flange) - I can post photos, if need be. A 4T wheel will bolt onto a WR250, but the sprocket alignment will be off.

 

[MOTORHEAD]

My WR's got a 6 speed from a 360 in it, so I don't know how that effect things, but I'm running 14/48 gears and it could probable pull taller gears with me on it. The guy I got it from was running 14/50, but he's a lot bigger than me. I could hardly shift fast enough to run 14/50.

 

[wallybean]

Motorhead,

The old 6 speeds have completely different ratios in the tranny. To approximate stock 1st gear ratios you need to go to a 15 x 48 gearing. Then try to hold on when you are WFO in 6th. Good for about 85 or so. Dino's 6 speed has a slightly lower 6th gear, straight 1:1 ratio vs later 6 speeds that had an overdriven 9.5:10 ratio. I ran 15 x 50 gearing in my 06 250 that I sold to my Nephew. Still good for about 80 plus mph and has a slightly lower first. Makes for a seamless transmission with a gear for all occasions.

Ajax,

When I first got my 06 and hadn't done any of the tranny work, I went to Moab for the first time and ran 14 x 48 gearing for the open stuff. Guess what unless I was transporting between trails I never used 5th. The clutch got a lot of abuse in the rocks and ledges but held up well and I really had no problems. When we got overrun by a blizzard, I ran away and hid from the batch of yz250's I was with and got to the truck a solid 5-10 minutes ahead of them. This was down about 10 plus miles of road OBTW

 

[MOTORHEAD]

Thanks for the info Wally.

So, if I got to 15/48 I'll have a stock 250 14/48 like gearing, with OVERDRIVE?

 

[ajaxauto]

Quick update did a 50 mile test ride on some tight single track with a little bit of open
The bike was geared 14/48 it seemed to work just great as first was low enought to climb anything and fifth was good for over 70 .The reason i know 70 is there is a road along the freeway where i was going as fast as the traffic This weeken i will be doing a motocross race on it so i will try the stock 13/48 I can tell you this one thing it ant no 125 as it is fast .I like my 125 because i can ride it wide open and feel i am in control but the 250 rides me somethimes and i have to learn to hold on
Question is what bike will i take to the next National my trusty CR 125 or the WR 250
one thing for sure i will not be taking the TE 510 .I am just not strong enought to hold on
to a 510 anymore Plus beating them on a 125 is more fun

 

[wallybean]

Motorhead,

15 x 48 gearing in first on your bike will approximate the stock WR250 first gear with 13 x 48 gearing which is stock. That would definitely be about the same as a stock WR250 but with a hell of an overdrive. Try the 15 x 50 gearing and I think you will like it. Especially with the rekluse pro, you won't miss that low first gear you had at 14 x 50. 1st must have been nearly useless unless you were doing trials like stuff. With 15 x 50 you will still have a 75 mph+ top end with your tranny.

Ajax,

You are right, I had no problem using the 14 x 48 stock. It just took some clutch work in the really nasty, slow stuff.

Walt

 

[MOTORHEAD]

I'll have to give it a try. I went to 14/48 and it's amazing how it will "walk" around just about idle in first gear. But, after that it is pretty much useless. Normal riding I just stick it in second and go to third about as soon as it starts moving.

It makes the gears very short, but it's like cheating in the gnarly stuff. Reminds me of my old TL125.

 

[Anthony_1978]

Great thread answered all my questions