Yamaha WR250R Mega Thread

[trizzo]

looking for HD tube recommendations for stock wrr rims+trailwings. what are you using, and what size tubez(front and back)

thx!

[dirthauler]

WTF is going o here!! i go off on my own for a bit and come back to find us half way down page two with an unanswered question, just left hanging!!

[dirthauler]

Originally Posted by trizzo

looking for HD tube recommendations for stock wrr rims+trailwings. what are you using, and what size tubez(front and back)

thx!

dunno, i just go to my tire guy and say gimme a tube for the front, and he says HD? and i say ya, micheline ultra hd if you got em. he throws me a box and i pay the cute girl at the register, works like a charm

[trizzo]

Originally Posted by dirthauler

dunno, i just go to my tire guy and say gimme a tube for the front, and he says HD? and i say ya, micheline ultra hd if you got em. he throws me a box and i pay the cute girl at the register, works like a charm

unfortunately my dealer doesnt have a cute girl on the payroll in any building.... :-( its why i dont visit often

[HardWorkingDog]

Originally Posted by trizzo

looking for HD tube recommendations for stock wrr rims+trailwings. what are you using, and what size tubez(front and back)

thx!

I haven't run them on my WRR yet, but I believe the best HD tube is sold by Moose. They're made in Germany and are thicker than anything else I've ever tried. Use them on all my YZ's, and eventually on the WRR as well.

http://www.mooseracing.com/catalog.j..._group_id=7373

edit: NOTE, THESE ARE NOT DOT-RATED, AND ARE INTENDED FOR OFF-ROAD USE ONLY. "USE THEM AT YOUR OWN PERIL."

[Bgunn]

Originally Posted by debaisley

any news on the bike ? , curious as to what happened

One of the red and white power wires to the starter switch had come loose out of the plug. The handlebars were recently changed, so maybe that played a part. Or it was just loose from the factory.

[BluePill]

Originally Posted by scottmac

Don't feel bad.

I've already broken my right fib trying a stupid steep hillclimb with
the stock Trailwings.

Then I broke my right collarbone in an Extreme Stupid lowspeed/nospeed
tipover.

Both times alone in the middle of nowhere with no cell coverage and the
only option is to pick up the bike and ride out before the vultures get you.

Somehow I developed a natural feeling for letting go of the bike when I've gotten "over my head". I just push it away from me, and try to lay it down as safely as possible. Works most times when there is some warning of impending doom, and keeps me from getting pinned under the bike.


Example of a controlled get-off. Ran out of speed 3/4 of the way up a corkscrew hill. Pushed off the bike into the weeds to get clear of it and keep the bike from tumbling back down the hill. No damage except to my ego.



A couple of months ago I did get caught under the bike. I hit a metal drain pipe that was laying across the trail at about a 40 degree angle - just after coming out of a muddy section. The trail was too narrow to turn into the pipe at any kind of straight angle, and BANG - I was down and my ankle was pinned under the swing arm before I knew it. It was impossible to move my leg or lift the bike - any movement twisted my ankle. My trail buddy picked up the bike, and we continued on without further problems. I will not ride trails by myself just for times like this.

[kawagumby]

Originally Posted by HardWorkingDog

I haven't run them on my WRR yet, but I believe the best HD tube is sold by Moose. They're made in Germany and are thicker than anything else I've ever tried. Use them on all my YZ's, and eventually on the WRR as well.

http://www.mooseracing.com/catalog.j..._group_id=7373

The really heavy duty "enduro" tubes are made of a softer thick natural rubber compound that might not work for everyone. They tend to leak air much faster than the thin stock type, so you have to check tire pressure very often. They also tend to "ball" up in little round chunks both inside the tube and between the tire and tube. They'll do that even if you liberally splash talcum powder when mounting the tire, and tires at highway speeds can get hot, which makes matters worse. So, for some who do a lot of street, the really thick heavy tubes may not be the best option.
Malcolm Smith sells heavy duty tubes which are somewhere in between, about 2-3 times thicker than stock, but not as heavy as the super-thick "enduro" tubes. If the thickness isn't listed in the catalogue, the price tends to tell the thickness as the heaviest are the most expensive, the mediums in the middle, etc..

[craftycoder]

Originally Posted by kawagumby

...and tires at highway speeds can get hot, which makes matters worse...

When they get hot at highway speeds, they like to explode. Heavy duty (enduro in this context) tubes are NOT highway safe. Use them at your own peril.

[debaisley]

Originally Posted by craftycoder

When they get hot at highway speeds, they like to explode. Heavy duty (enduro in this context) tubes are NOT highway safe. Use them at your own peril.

i always hear this mentioned , but has anyone actually had this happen ? I have always run HD tubes , never have a problem.

[HardWorkingDog]

Originally Posted by kawagumby

The really heavy duty "enduro" tubes are made of a softer thick natural rubber compound that might not work for everyone. They tend to leak air much faster than the thin stock type, so you have to check tire pressure very often. They also tend to "ball" up in little round chunks both inside the tube and between the tire and tube. They'll do that even if you liberally splash talcum powder when mounting the tire, and tires at highway speeds can get hot, which makes matters worse. So, for some who do a lot of street, the really thick heavy tubes may not be the best option.

You're right on every point, although the tendency to ball-up has been relatively minor in my experience, and I always use a little talc when installing the tube.

I should have been a bit more explicit in stating they're intended for off-road use. Assumed (never a good thing to do) that's what the OP was looking for...

edited my original post

[tonymorr]

WR250R auxilary tank? I'm thinking about making a tank that I could throw on for longer trips. This would hold just about 2 gallons (if it weren't made of cardboard and duct tape).



It's just a mock-up to see if I like it enough to proceed. I dunno...

[debaisley]

and how would you pipe the fuel into the main tank ?

[a1fa]

Originally Posted by debaisley

and how would you pipe the fuel into the main tank ?

Penis pump.

[tonymorr]

Originally Posted by debaisley

and how would you pipe the fuel into the main tank ?

Not sure about the plumbing exactly but I envision using a Facet electric fuel pump in the space where the Exup motor was. They are 18 oz and less than 3" x 3" x 3"

https://www.aircraftspruce.com/catal...facetpumps.php