Yamaha WR250R Mega Thread

Discussion in 'Thumpers' started by Sock Monkey, Apr 7, 2008.

  1. Bitingdog

    Bitingdog That's not my dog

    Joined:
    Apr 2, 2015
    Oddometer:
    8,219
    Location:
    Vancouver B.C. rainforest
    Happy New Year to all of you who understand and appreciate the unique set of attributes found only in our Bluebelle's


    ***Admittedly It took me awhile to figure out for myself
    coresports, PlowHand, Sidehil and 2 others like this.
  2. darkhelmetnl

    darkhelmetnl Been here awhile

    Joined:
    Apr 1, 2010
    Oddometer:
    119
    Have a great new year fellow Whizzers!


    I just did some small mods on my Dubya R and curious about your experience and opinions:

    1. Flatlands radiator guard
    Putting on the Flatlands radiator guard I found the supplied photos not too clear. I found it odd the guard sits like 2cm from the radiator. And that the rear brace doesn't line up with the bolt at the radiator hoses. It fixes by tightening and the brace will bend a little. But this was the only way to mount. How did your Flatlands fit?

    2. Tusk luggage rack
    The milling and powder coat finish off the rack and spacers is poor. I even believe the spacers had a corroded look on the inside.
    The fit required some drilling in the rear licence plate tail fender thing (not the shiny fairing, but the matte black plastic stuff) to be able to put the bolts on from the bottom.

    No photos yet, sorry. But this is to my European make bike and by the fit I even believe the tail has been modded before

    3. Spark plug I changed my spark plug and the top part was all corroded.
    I made sure the drain hole is clean, but it's this normal for the plug to corrode?
    And what do y'all think about the colour of the plug?[​IMG][​IMG][​IMG]
  3. Bitingdog

    Bitingdog That's not my dog

    Joined:
    Apr 2, 2015
    Oddometer:
    8,219
    Location:
    Vancouver B.C. rainforest
    Can answer some of your questions:

    1. Flatlands radiator guard - no idea

    2. Tusk rack is cheap Chinese. You get what you pay for regarding finish. The European version of the wr250r has a markedly different license plate mount & tail section, whereas the Tusk rack is designed for the North American version wr250r.

    3. Spark plugs on these bikes often get rusty, either from careless washing, or riding through substantial puddles, creeks, rivers, and mudpits. The business end looks normal. Mine looked comparable when I last checked it.

    Happy New Year!

    Biting
  4. trailer Rails

    trailer Rails Washes hands before going to the bathroom

    Joined:
    Jun 13, 2008
    Oddometer:
    11,804
    Location:
    Pittsburgh PA

    Drivetrain life is a very subjective thing. For instance, I bought a cheap chain and it trashed my drivetrain in about 2500mi. To the point that I had to adjust my chain at every gas stop. I have been buying top shelf chains and am getting about 10,000 miles out of them. I ride in very muddy conditions on the east coast, it trashes drivetrains, brake pads, brake rotors and wheel bearings.

    If that little tool that was posted works on the CS nut, it might be a good thing to carry, it is the same size as the rear axle, so we might not be adding a tool to our pack, just swapping a tool. I really dislike the idea of the CS nut and wish it was more like the DR 650. The DR was so easy to swap, I would carry a different CS sprocket with me and swap them as the terrain changed.
    eakins, woofer2609 and Bitingdog like this.
  5. KLRWiley

    KLRWiley Wiley

    Joined:
    Jun 17, 2009
    Oddometer:
    209
    Location:
    San Diego, Ca
    Nevermind
  6. rsteiger

    rsteiger Bob

    Joined:
    Jul 2, 2011
    Oddometer:
    784
    Location:
    Hotlanta Area
  7. coresports

    coresports coresports

    Joined:
    Aug 3, 2011
    Oddometer:
    587
    Location:
    Mid MI
    Nice! Bookmarked.

    Im at 15k and my front sprocket is starting to show some wear and i like the earlier post about extending chain/sprocket life swapping out front CS...cheap and easy fix even i can do by myself with the tools i have.

  8. JensEskildsen

    JensEskildsen Long timer

    Joined:
    Mar 24, 2009
    Oddometer:
    1,612
    Location:
    Denmark
  9. rsteiger

    rsteiger Bob

    Joined:
    Jul 2, 2011
    Oddometer:
    784
    Location:
    Hotlanta Area
    Yes it is for real.

    Like I said I have never really had an issue with my WR250R - putting the bike in gear seems to work pretty well.

    However, on my old DL650 and Ninja 650r it is a real bugger to break the C/S nut and I usually need another person to apply the brake or place a piece of wood across the swing arm to stop the rear wheel from spinning. An impact gun would help but I am not sure if that may cause any damage to the transmission gears over time.
    coresports likes this.
  10. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    27,113
    Location:
    Fort Collins, Colorado
    Oh that's slick. Perfect for doing a swap yourself. I've been using the bike in nuetral, chain on, my daughter standing on the rear brake method but that eliminates all that.
    riverman likes this.
  11. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    27,113
    Location:
    Fort Collins, Colorado
    I've also found other bikes CS to be some difficult. Like any shop tool it's just an alternative to a work around method.
  12. PYG RYDR

    PYG RYDR Adventure-Dual Sport

    Joined:
    Sep 26, 2010
    Oddometer:
    516
    Location:
    Southern VA
    Yeah this tool works great when the chain is OFF. And you need a specific tooth model for different tooth CS sprockets.
  13. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    27,113
    Location:
    Fort Collins, Colorado
    I went with Supersprox sprockets and RM ATV primary drive O-ring chain this time. I know Supersprox last and have heard RM chain last a very long time, for the price paid.

    I've always used top shelf DID chains but I figured the WR motor is not as hard on chain (no great thumper torque pulse like other bikes) and the Primary Drive chain will last.

    Any other PD chain users out there and how long did it last?
  14. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    27,113
    Location:
    Fort Collins, Colorado
    It's a shop use tool and yes if a chain is off.
    A shop will easily see bikes brought in with a busted chain.

    I've seen them at shops. With this tool you can easily isolate & lock the CS and it's off.
    The normal shop method is put the bike in gear and hit it with an impact. As stated this is hard on the bike.

    For $20 these guys eliminated that problem. A $20 tool for a mechanic is dirt friggin' cheap to do something right. I grew up working in shops and speciality tools are priceless when needed.

    Here's an example in the auto world. Induction heating. Kick-Ass over flame. Does not damage seals or other surrounding parts from flame. Once you use it once so say this is the best idea ever. Ideal for crank bolts, exhaust bolts, O2 sensors, bolts near electrical... Not cheap $400. For pros only, not for the cheapster home mechanic.

    http://www.theinductor.com/induction-heating-products/mini-ductor/models/md-700-110v

    trailer Rails and Bitingdog like this.
  15. rsteiger

    rsteiger Bob

    Joined:
    Jul 2, 2011
    Oddometer:
    784
    Location:
    Hotlanta Area
    The latest model works for 13, 14, an 15 tooth sprockets but I think it is set up for 520 chain which is on all my current bikes.

    525 and 530 may need something different.
  16. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    27,113
    Location:
    Fort Collins, Colorado
    Good ?
    I think the roller diameter is close enough to work on larger chains. That tool sits in the tooth valleys and looks like it has some play anyway. Even if it's loose on bigger chains it should still hold. Tooth valleys are spaced the same or close enough. The question might be will that tool fit over other swing arms pivot points. I'm sure those guys thought about a universal aspect.
  17. Belgradian

    Belgradian Been here awhile

    Joined:
    Jan 19, 2014
    Oddometer:
    370
    Location:
    Montana
    First ride of 2018 55506BD2-8BDB-472F-8524-38FC2A4704B1.jpeg
    Migyver, ACR, trailer Rails and 3 others like this.
  18. darkhelmetnl

    darkhelmetnl Been here awhile

    Joined:
    Apr 1, 2010
    Oddometer:
    119
    Another trick I used before is just sticking a towel in the sprocket, no special tool needed
    PYG RYDR, eakins and PlowHand like this.
  19. eakins

    eakins Butler Maps

    Joined:
    May 29, 2002
    Oddometer:
    27,113
    Location:
    Fort Collins, Colorado
    I'm thinking you are spraying some water into the drain hole when washing your bike and thus the rust. Tip looks ok just watch tour spray or plug the hole when you clean.
  20. samandkimberly

    samandkimberly Adventurer

    Joined:
    Feb 7, 2011
    Oddometer:
    52
    Does anyone have the rise/pullback measurements for the stock handlebars? I’m shopping for new ones and I’d rather not pull the old ones off to measure them. Just eyeballing them they look to be about 3” pullback and 3” rise. I think I want similar pullback, and about another 1 - 11/2 of rise....but not so much that the stock cables need changing.