Yamaha WR250R Mega Thread

[trashed]

Well HF was right this thing rocks!!! Only got to go around the block today. Tommarow I will take it on the highway and check it out and let yall now what I think!

http://i476.photobucket.com/albums/r...g?t=1229151155

[cyborg]

Originally Posted by Zadok08

Well....here it is. I received the Force Radiator Guard today.
Took a couple pics of the install.
This is a really nice piece of work. Strong too. Best protection of
any guard I have seen yet.
It wraps around the radiator. It bolts to the same bolt holes where the radiator is mounted, then on the back side where the radiator hose clamp
is mounted.

Very nice looking rad guard. Looks very beefy!
Thanks for the reference Zadok.

One more wallet-thinning accessory to order up

[BigDogAdventures.com]

Originally Posted by Flamerider

Welcome on board BigDog. Great to have a rider and author of your calibre on this thread. Some real talent, and real characters here, you'll fit right in.

The cadre might enjoy this:
http://www.bigdogadventures.com/RidingPriorities.htm

I'm taking the conservative route to mods on mine. Just ordered the Aqualine tank. The seat is at Renazco.

My Nevada section TAT roll charts arrived yesterday.



Conner in Sacramento

Hey Flame rider--------a WR250R--4 gallon tank---Nevada TAT rollcharts--Renazco seat-----. Your making me drool-------the Nevada state was by way far my favorite. I usually don't do stuff twice----but it'd be nice to have this little light bike on that ride again.

[BigDogAdventures.com]

Originally Posted by runner

Mark,

You have a new toy I see



me too

Hey Joe---------"where you goin' with that gun in your hand".

Sorry for that------a late 60's early 70's flashback--I have them now and then.

You got a 250 Joe ?????? I'm gonna bet you lowered it a bit ????

I went thru your hometown this year and was poking around for your house when I rode the Trans Wisconsin Adventure Trail. I had a gps waypoint but wasn't sure which house exactly or if you were around-----looked for a sickle and didn't see any so I went on. I haven't seen you in a while---I'll always remember our Eastern TAT ride together---we showed them BMW riders a thing or two didn't we

[wide open]

Now that the Safari tank is official - at least listed for sale at JustGasTanks, my DR650 and XT225 are going to be history, and an R-dos (I'll learn how to do the little 2) will be coming home from one of the many Atlanta Yammiehoo dealers. (If anybody has pics or pans of which dealers to start a relationship with in or around the western Atlanta burbs, PLEASE send me a pm.)

That's a GREAT looking rad guard there, Radok!
For those planning to put on a Safari tank, though, we should look forward to finding out from the first person to mount one whether a rad guard will still be needed or even installable with the Safari, or if the tank itself serves as a rad guard like on the DRZ tank.

[BigDogAdventures.com]

Originally Posted by wide open

For those planning to put on a Safari tank, though, we should look forward to finding out from the first person to mount one whether a rad guard will still be needed or even installable with the Safari, or if the tank itself serves as a rad guard like on the DRZ tank.

I can't remember where I read it---but I'm almost sure the tank will negate the need for a radiator guard. I am so happy that this tank is coming available. I damn near wore out my 610 Husky waiting on a big tank for it. It was a frickin' battle. I guess we'll have to wait and see for sure.

[HighFive]

Originally Posted by trashed

Well HF was right this thing rocks!!! Only got to go around the block today. Tommarow I will take it on the highway and check it out and let yall now what I think!

http://i476.photobucket.com/albums/r...g?t=1229151155

That's a different sprocket than I got, but I'm sure you'll like it just the same.

Here...I'll repost photo of my TI2. What model does your label &/or invoice say?





HF

[trashed]

Ya you got the TI2 sprocket. I got the TI1 sprocket. Your is guaranteed for life and mine isn't. I just dont see a 250cc wearing a titanium sprocket any time soon. My chain is 12,000lb tensile strength.

Originally Posted by HighFive

That's a different sprocket than I got, but I'm sure you'll like it just the same.

Here...I'll repost photo of my TI2. What model does your label &/or invoice say?





HF

[montesa_vr]

Originally Posted by trashed

And if anybody cares or not this thing will whip a Ninja 250 in the quarter mile. and whip it good for that matter!

Maybe. I realize there's a Youtube video out there where the WRR wins, but don't bet your title on duplicating that. Might depend on the skill and weight of the two riders. When Motorcyclist tested both in October the Ninja was both faster and quicker.

Ninja --15.3 seconds, 84.15 mph
WRR -- 15.5 seconds, 80.88 mph

Cycle World tested a WRX in the September issue:

WRX -- 15.57 seconds, 80.06 mph

The R2 is a remarkable motorcycle, but you can't fool mother nature. There's no way for the single to overcome the rpm advantage of the twin. At some point you can only get so much power out of a given displacement, and the only way to make more is to rev higher (hp = torque x rpm/5250). Once your piston is approaching 4000 fpm at redline you wave goodbye to reliability. So you divide the same displacement into more cylinders with shorter strokes, so you can spin the engine faster without your pistons going over 4000 fpm.

The Ninja redlines at 13,000 rpm, the WRR at 11,000. That's why a 377 lb. Ninja can beat a 301 lb. WRR in the quarter mile. And don't race one of the earlier neon Ninjas. They were a lot lighter than the current model.

[montesa_vr]

Originally Posted by montesa_vr

and the only way to make more is to rev higher (hp = torque x rpm/5250).

Well, of course that isn't the only way. You could turbocharge it, supercharge it, feed it nitromethane or nitrous oxide, jack the compression up to 15:1 and run it on alcohol, etc. But practically speaking, more rpm is the path to horsepower.

[Jaynen]

Thats a pretty good price for the radiator guard. It's definitely on my list.

I really wanna know how much better a new seat/airhawk pad and the bigger tank effects the long distance riding capability of the bike.

I have a 250 mile day planned for Jan 9th but I doubt I will be able to purchase any of the stuff by then

[derangedhermit]

Originally Posted by montesa_vr

The Ninja redlines at 13,000 rpm, the WRR at 11,000. That's why a 377 lb. Ninja can beat a 301 lb. WRR in the quarter mile.

I'm not convinced you have the right reason for the results. Don't the Ninja and the WR250R produce about the same 25 hp and 16 ft-lbs? I doubt there is enough difference to make up for the 15% difference in total weight (with a 160 lb rider).

I think if you lowered the WRR suspension 5" (to make seat height the same) and cleaned up the worst of the drag, the WR250R would handily beat the Ninja, because of the lower weight.

[montesa_vr]

Originally Posted by derangedhermit

Don't the Ninja and the WR250R produce about the same 25 hp and 16 ft-lbs?

Pretty close.

Same dyno, same day (October 2008 Motorcyclist):
Ninja -- 25.6 hp @ 10,500 rpm, 13.1 ft. lbs torque @ 9,250 rpm
WRR -- 23.5 hp @ 8,750 rpm, 14.4 ft. lbs. torque @ 8,250 rpm

Same dyno, same day (but not the same dyno that Motorcyclist used)
(September 2008 Cycle World):
Ninja -- 27.2 hp @ 10,770 rpm, 14.3 ft. lbs torque @ 9,250 rpm
WRX -- 27.1 hp @ 9,150 rpm, 16.5 ft. lbs. torque @ 8,150 rpm

So the single actually makes more torque, but the twin makes more horsepower because it can spin faster. If the Ninja engine was as sophisticated as the WRR, it would probably make the same torque, and absolutely kill it for horsepower.

In the Cycle World test the Ninja hp advantage was slight, but it still edged the WRX in the quarter mile. The Ninja really does have an aerodynamic advantage -- it topped out at 96 mph, vs. the WRX at 85. I'm sure that plays some part in the quarter mile terminal speed.

[Conner]

Originally Posted by BigDogAdventures.com

Hey Flame rider--------a WR250R--4 gallon tank---Nevada TAT rollcharts--Renazco seat-----. Your making me drool-------the Nevada state was by way far my favorite. I usually don't do stuff twice----but it'd be nice to have this little light bike on that ride again.

In my semi decrepit state (50yo weakling, bad back, balding, etc.) my f650 Dakar is way too heavy for seroius off roading. Loaded for the far north (veteran of the Cassiar and Dempster hwys.), the thing has to weigh 450+ lbs. I just finished DP's ride report. Useing his method, hoteling it every night, the little Yamaha should be a hoot on the TAT.

Wonder if anybody has circumnavigated the Great Basin...




Conner in Sacramento

[scottmac]

Dammit Zadok, you're costin' me money here!!!

That radiator guard is sweeet!!!! Just put an order in
for one myself.