Yamaha WR450F Adventure Bike

Discussion in 'Thumpers' started by stevh0, Dec 31, 2009.

  1. Pablo83

    Pablo83 Sleep, Wrench, Ride

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    Speaking of WR adventure bikes, for the last year I've been putting together the MonkeyButt-500 ride. The idea was a 500-mile three-day dualsport ride through central Colorado with a large amount of technical singletrack.

    At the high point we had about 50 people signed up for the ride. Nine people showed up. Four people finished the route without any shortcuts. The final four are pictured below just before our final section of trail at midnight on the third day. Of the final four, two were WR's (one was mine)

    [​IMG]

    BLUE BIKES ROCK!

    :ricky
    #81
  2. Catskill

    Catskill tree hugger

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    Ride Faster I hear Banjos!
    #82
  3. tcskibike2008

    tcskibike2008 SnowHawker

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    I had a 2001 WR250F that must of had 20K miles, never did a valve adjustment and was the most powerful 250 I have ever rode. I did the YZ cam... Anyway the joke was that the bike was possessed by a very beautiful women who died tragically and like to abused and neglected. :)

    I am a KTM man now but will always have a soft spot for Blue. Great bikes and sleds.
    #83
  4. tcskibike2008

    tcskibike2008 SnowHawker

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    SICK! Sounds like fun man.. Our adventures are smaller in VT but no less grueling, especially when its wet.
    #84
  5. Parx400

    Parx400 Long timer

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    I will Play.


    Here is my wanna be ADV bike. Right now in off road trim I have the 6.6 gal tank with the corbin seat. running 14/42 gearing.

    [​IMG]

    [​IMG]

    Ya thats a Motard front brake. I tried it once.

    [​IMG]




    Here she is in Motard trim. ims 3.1 tank, stock seat ( I use the corbin on long rides)
    [​IMG]
    #85
  6. yamahaman

    yamahaman wannabe bike builder

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    [​IMG]

    here is my yz 426 I run mine thru the desert here and I have the gearing to max out at 70 mph when I'm on the rev limiter I have obviously got the close ratio gear box so this limits me a bit. I do not ride on the road (blacktop) at all unless there is a problem all of my riding is done on the desert/bush tracks. I have a 10 litre (2.6 gal) tank on the back and 13 litre (3.4 gal) clarke tank on the front. I have re routed the exahust to suit. I get 330 km (210miles) out of my bike in the bush a little less in the desert I have my bike on the rich side to protect the motor.

    My two cents worth is that these bikes wr426/wr450 are awsome bikes and well designed they are suitable as an adventure bike only if you fit a cush drive rear end and suitable gearing. I have had a lot of experience in these engines and can give more info if anbody wants

    Im going to fit a headlight/map reader assy in th enear future
    #86
  7. MotoBoss

    MotoBoss Bad Influence

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    I have a 07 WR450F and want to use it more on the road (black top) to get to the off road stuff. I have all the lights, signals, mirrors and street legal plated done and other than the gearing and new seat it's ready to go. My concern is how will it hold up. Will I need to change oil every other day (30 hrs)? Will this type of riding increase valve adjustment requirements? Will it wear the top end/bottom end out (very) quickly? Crush drive from what?

    It's a great off road (dirt) bike but I'm tired of trailering to areas to ride. I would rather ride to ride the trails and dirt. Essentially I want a TAT bike from my WR but am worried about reliability and longevity. Any solutions or wisdom? Thanks
    #87
  8. a1fa

    a1fa Throttle Jockey™

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    98 WR400F... it's a great dual sport...

    [​IMG]

    It lacks the easy button but it sure makes it up in the wheelie button department.
    #88
  9. Super Sport

    Super Sport Adventurer

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    Feb 3, 2010
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    Baraboo Bluffs, WI
    The WR450 works great for me as a dual sport, mostly because that's what's in the garage and paid for. I did a 500 mile off road trip this summer and had no problems at all. And I went places that you probably wouldn't wanna try with a KLR or other road-oriented bikes. So if you already own it, outfit it and try it.

    [​IMG]
    #89
  10. a1fa

    a1fa Throttle Jockey™

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    I like mine, alot.
    #90
  11. yamahaman

    yamahaman wannabe bike builder

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    :wink:
    A cush drive is a rear hub that has rubber isolation holding the sprocket to stop the hard facing on the gears in the gearbox from comming off and to stop the gears from shattering under hard acceleration and deceleration.

    http://www.radmfg.com/cush%20kit.htm

    A cush drive is also a must if you plan on doing long hard miles in sandy whooped out tracks where the gearbox is loaded and unloaded by uneven tracks. During a few big races here in Australia (Australian Safari and Finke)there have been a few cases where gear box failures have occured due to this.

    NOTE THIS IS DURING RACE CONDITIONS AND USUALLY BY PRO RIDERS WHO HAVE THE BIKES ON WIDE OPEN THROTTLE FOR A LONG TIME

    In regards to engine life riding on road, with a cush drive, Engine life should not be compramised if ridden sensibly You can still have fun but keep things within limits. They are not road bikes and shouldn't be ridden like one. If you can learn to keep some corner speed (this will take some time due to the way the suspension reacts) all will be good. If you come to a corner and slam the brakes on and then after leaving the corner give the bike 100% wide open throttle this hard deceleration and acceleration is what kills motors not normal riding
    #91
  12. a1fa

    a1fa Throttle Jockey™

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    This bike will have no problem riding at 60mph for extended periods of time -- granted you have a 400 or 426 motor with upgraded crank pin. What this motor needs is a bit more oil (add an-inline radiator) to avoid more frequent changes, and extend oil life.

    With higher gearing the motor will not spin as much, but it will also not be fun off-road. My gearing is at 15/47. Works decent for street hooliganism and off-road shenanigans.

    In 5th gear, at 5950 out of 8500 RPM - you are looking at 60mph .

    The motor should last you as long as same vintage TW200, or XT225.
    #92
  13. yamahaman

    yamahaman wannabe bike builder

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    Gearing and oil is the key to making these motors last.

    Oil is cheap insurance change it often!
    #93
  14. MotoBoss

    MotoBoss Bad Influence

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    Thanks for the wisdom. I'm pretty stoked about riding the WR more often not it is street ready. crush drive and bigger tank on the Christmas list! Thanks
    #94
  15. a1fa

    a1fa Throttle Jockey™

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    I am adding a FMF Q4 to my shopping list, and dropping the gearing to 14/42 per another member's recommendation. I am afraid with such gearing it may loose its charm. I'm going to start eye balling auto-clutches so it won't be so bad off-road.
    #95
  16. MotoBoss

    MotoBoss Bad Influence

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    Got the Acerbies 3.3 tank installed and now thinking once again about gearing. I know this has been beat to death but......................gearing that will let me do 65 + and still ride the traials in comfort is.....what? 14-47? What about the best tire for road work and rock?
    #96
  17. snatchy

    snatchy Adventurer

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    there is a nice wr450 featured in transmoto magazine at the moment
    if you want a look at the first page of the article, it can be found online - this works right now, not sure when it will stop - presumably when the next issue comes out;
    www.transmoto.com.au
    click on the "issue no. 4, digital sample here" on the right side of the page. scroll through a few pages until an adventurised 450 comes up

    it has a good set of mods;
    - 20L front and 10L rear safari tanks
    -new exhaust to suit the rear tank hanging low
    - small windscreen
    -cush hub rear wheel
    - small rear rack
    - etc etc

    the good interesting mod is that he has added an external oil reservoir to bring oil capacity to 3 litres - they think good for 4000km between oil changes, permiting good long desert runs. the next page of the article in the magazine (not visable online) showed a basic diagram of the oil circuit and how he tapped into it etc. The reservoir was built into the custom bashplate. the weird bashplate and a few extra oil lines can be seen by those with a keen eye at that link above.

    apparently he made a few bikes like this for his mates so they could do trips together.

    the mega oil capacity idea was quite interesting i think.
    #97
  18. krisfront1

    krisfront1 Adventurer

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    hey, i read the story, its the best i have seen, l love it.
    #98
  19. yamahaman

    yamahaman wannabe bike builder

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    I have been banging on about Cush drives for ages and now the chickens have come home to roost as I havn't saved up for a cush drive of my own. I changed my gearing to 15/45 and this proved too much pressure for fifth gear and it has damaged his dogs between 5th and 3rd so after the first hundred k's! this is why gearing and cush drives are important. I survived the next 400km with only 4 gears. With this gearing combo in a yz box it was pulling 80kph at 6200 rpm in fourth in heavy sand. This is a very common problem in all yz/wr 450's beware all owners. Keep in mind this bike has done near 30 000 km and has been rebuilt twice good service life considering how hard this bike gets ridden....
    dont be afraid of a wr as an adventurer only if set up properly:clap :clap :clap
    #99
  20. dnrobertson

    dnrobertson Big Bike, Slow Rider

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    Of the three bikes on the ride mentioned, two riders did one oil change in 4500 KMs.

    Gary (in transmoto) did not change the oil for the entire ride and all looked good when he changed it back in Melbourne.

    No problems with valves on the three bikes after the trip.

    All three riders were amazed at how well the bikes went.