Anyone run a 400ex axle?

[bnau267]

Besides the hubs, what else is needed from the 400ex to run the axle on a 250r?  Do I run the R brake hub or the 400ex and what about the locknut.  The carrier is the same right?

[red88r]

I had a 400EX axle on my 86 but I bought it that way.  I think the 250r brake hub and lock nut will work but not 100 percent sure.  Yes the bearing carriers are the same.  Also pretty sure a 400EX axle is not as wide as a 250r axle.

[bnau267]

I had a 400EX axle on my 86 but I bought it that way.  I think the 250r brake hub and lock nut will work but not 100 percent sure.  Yes the bearing carriers are the same.  Also pretty sure a 400EX axle is not as wide as a 250r axle.

You might be right on the widths.  My 400ex was every bit as wide as the R but I seem to remember the hubs being about twice as wide as the R hubs.  Feel like an idiot that I didn't figure this out while I had my 400.

[red88r]

You might be right on the widths.  My 400ex was every bit as wide as the R but I seem to remember the hubs being about twice as wide as the R hubs.  Feel like an idiot that I didn't figure this out while I had my 400.

I actually might go the other way soon.  I got a 400EX i just picked up with a stock axle and might put a 250r axle in it.

[bnau267]

That's funny.  That 400 was the most reliable bike I've ever owned with exception to my YZ250.  They can be a little stubborn to start in cold weather.

[Bigred]

400exaxle I have all the r parts except hubs and axle nut

[bnau267]

400exaxle I have all the r parts except hubs and axle nut

Cool.  Does it end up at about the same width with the 400ex hubs installed?

[Pumashine]

I bought a 250r/400ex chrome durable + 4 on ebay. I found out later about using the 400ex hubs. Other than that I used all 250r parts to put it together. Seems I had an issue with the length of the threaded part your axle nut goes on.

I believe the width is the same after installing the 400ex hubs

[C-Leigh Racing]

Using the 400EX axle in a 250R, you'll need an 1/8" thick spacer washer, to go between the sprocket hub & the bearing, to space the axle out so the rear sprocket will be in line with the front sprocket.
You'll need the wheel hubs from a 400EX, 300EX or 250X, because the axle splines are different from the splines on a 250R axle & the 250R hubs wont work.
The G Force 400EX axle, is shorter than a Lonestar +4 & even with the deep set 4 poker hubs, it will still be 1" shorter than the Lonestar +4, but it sure was nice & chrome & $180.00 shipped to the door.
Dont know if it can be done now, but a guy got it for me that was on the atvnc.com site a few years ago. Good service out of it so far.
Neil

[Pumashine]

Using the 400EX axle in a 250R, you'll need an 1/8" thick spacer washer, to go between the sprocket hub & the bearing, to space the axle out so the rear sprocket will be in line with the front sprocket.

This is good info. I always wondered why the front sprocket was always showing wear on one side. Anyone needing the spacer get a hold of me.

[red88r]

My cousin has been running the G Force axle in his EX for about a year with no issues.  He is not racing but the axle seems to be very nice for the money like Neil said.  Under 200 bucks to your door from Ebay.

[C-Leigh Racing]

Tony, I parted off a piece of aluminum round stock to make that washer, same OD as the center of the sprocket hub. Boring tool to punch out the hole size for the axle & then used the cut off to make it 1/8" thick.

Now I suspect you'll probably polish yours, which will be a nice Pumashine touch.
Neil

[Pumashine]

Tony, I parted off a piece of aluminum round stock to make that washer, same OD as the center of the sprocket hub. Boring tool to punch out the hole size for the axle & then used the cut off to make it 1/8" thick.

Now I suspect you'll probably polish yours, which will be a nice Pumashine touch.
Neil

Was there any problem with the seal not making it to the sprocket hub?

[GO OVRIT]

Is G-Force still around?  The last coulle G-Force parts my friend got showed up in Tusk boxes about a year ago.

[C-Leigh Racing]

Was there any problem with the seal not making it to the sprocket hub?

Not that I remember Tony, but adding 1/8" I would suspect the seal lips to be right close to the edge of the sprocket hub end.
Those carrier seals are double lipped & if the seal has been drove in flat up against the bearing, might be an issue of the inner lip riding on that washer.
My carrier, the seal had a gap between the inner lip & the bearing, a grease area I guess.
Now something I do remember, when I put that axle in & finger tight the axle nut, the curve part of the sprocket hub was up against the seal & sort of locked up the axle. That is when I checked the chain alinement & it was off just a slight bit.
Neil