Yamaha WR450F Adventure Bike

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

  1. stevh0

    stevh0 Super Retard.

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    I think you are refering to the heidenau k60. Great dual tire. Guys are getting 8000miles on a rear and 12000 on the front.

    The front however seems to be loose on dirt. Id rather run a dot knob on the front and a dualsport tire in the rear.

    what sprockets did u decide on?
    #41
  2. stevh0

    stevh0 Super Retard.

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    Oil changes depends on the use.

    If I ride alot of dunes and enduro like terrain, ill change the oil every 6-10hours, depending how hard Ive ridden it. Motors tend to take alot of punninshment in sand.

    If you regear and running 70mph @ 7500 rpm, you should be fine for running that for 100miles at a time. Servicing it at 1000km is fine.


    The airhawk is a must have. Its on my shortlist with the 6.6 gallon tank and the more road orrientated tires.
    #42
  3. wickit

    wickit Adrenaline Junkie

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    Sunstar 15t front as they are well built durable and equal Renthal quality IMO. RMA 47T rear off from Rocky Mountain. I would prefer a 45T rear to start out with, but do not want to spend a lot of money on trial and error sprockets. After I find the correct rear sprocket I will pony up for a top quality replacement. If I have to get a new chain I will look for a new stocker take off and just cut it down. Very happy with my stock drivetrain so far.

    Steveho your running a Trail Tech Vapor correct? What RPM is your WR running at 70mph in 5th with 15/45 gearing? Did you write down what your 14/50 RPM was at 50mph? I don't know what RPM it was, but my bike ran the best feel for cruising at 50-55mph in 5th. If you have that data it would save me some cash buying sprockets.

    Yes that is the tire. I don't know what I am going to do, but for now still sticking with full on dirt tires. I know unless it is similar to a 606 it would not have the off road traction I prefer. On a different bike I would be looking at a good dual sport tire, but if there is a hill to climb, mud to dig, or what ever I'm pretty much going to try it on the WR. A 14K bike such as the 800 or 990 I hope would cause me a little more caution.

    Does the 6.6 Acerbis petcocks sit in the same location as the 3.3? I just installed the 3.3 last summer, but will be putting a 6.6 on very shortly. Yes it is a huge tank, but I really do need the range without carrying fuel. Just wondering if I have to do it all over again to get it plumbed in. Not that it is a huge deal. I will be adding in a seperate valve with a drain hose to transfer fuel. Way easier then siphoning it for another bike.

    Oh yeah I have a barely used (no scratches) blue Acerbis 3.3 if anyone wants it.
    #43
  4. stevh0

    stevh0 Super Retard.

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    I did not have the vapor on when I was running the 45 rear. I can tell you that its long enough to hit 100mph+ on gravel with ease. Technical terrain turns into alot of clutch riding.

    With the 13-50 at 70mph i run about 9500rpm with the 15-50 i run 7500 at 70. The 15-45 would probably be around 5500-6000rpm at 70mph.

    I dont think its really neccesary for you to go down to a 45. Guys who run races out in the desert up in north africa have been running 15-48 setups for years. The claim it gives them enough bottom end power for some dunes and they are still able to hit 80-90mph on the straights.

    I think 45 is an overkill. But for now im happy with the 15-50 setup if I need a little more speed. Standing at riding above 70mph is way uncomfortable.
    #44
  5. wickit

    wickit Adrenaline Junkie

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    Thanks for the info...started to put the vapor on tonight. I have it mounted with the plastic clamp, but will move it down to replace the stock odo after I do some gearing tests. How the hell did you get that cheap screw to thread into your caliper? No way in hell will it work, Trying to find some info on a metric tap.
    #45
  6. stevh0

    stevh0 Super Retard.

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    I did not install the Vapor myself. Ill have to look into the caliper. If you are having trouble, ill run down and check out the caliper mount for you.
    #46
  7. Gunslinger1

    Gunslinger1 GIVE'R

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    #47
  8. Colebatch

    Colebatch "Moto Porn"ographer

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    As mentioned before, less rock thru radiator risk yes, but perhaps the main reason is cooling ... you lose up to 50% of your effective cooling with the airflow blocked by by a high fender (most rally bikes have a large single radiator going all the way across)... the fender covers a third of your radiator surface area, and adds so much turbulence to the remaining airflow hitting your radiator that it significantly reduces cooling on the remaining 2/3 of your radiator.

    Additionally, in rallys these bikes spend a fair bit of time around 75 - 100 mph ... and the low fender is significantly more aerodynamically stable and efficient than a high fender. At those speeds its a significant difference.

    So in answer to your question, there are 3 good reasons to use low fenders on dirt bikes, and only 1 reason not to.

    Even when it is muddy (light mud) a low fender is better at keeping mud spray off your headlight and goggles as well.

    As rallys tend to be held on fast dirt gravel roads, sand etc, there are plenty of reasons to use a low fender.

    This is how much cooling you can get with a low fender:
    [​IMG]

    And this is how much gets cut off with a high fender:
    [​IMG]

    And this is what can happen with your high fender cause you dont get enough cooling:
    [​IMG]
    #48
  9. stevh0

    stevh0 Super Retard.

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    does anybody know how to adjust the headlight beam on the 07-09 WR headlight cowls? The older model was adjusted via bolts on the side.
    #49
  10. zxrider11

    zxrider11 Been here awhile

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    Here are a couple of pictures of my 2007 WR450 with the Clarke 3.6 gallon gas tank.

    The bike weighs about 260 pounds empty, and made 44hp with stock exhaust.

    I use this bike for dualsporting in Michigan - single track trails, ORV, snowmobile trails, gravel roads, and pavement connectors. We typically do 200 mile day rides from base camp, and encounter hill climbs, river crossings, sand whoops, etc. It is hard to find a bike to cover every adventure. My riding buddies have DRZ's, Husky TE610, WR426, KTM300EXC, and CRF450x.

    [​IMG]
    [​IMG]
    [​IMG]

    I have done 150 miles before even having to flip to reserve fuel.
    #50
  11. kxb44

    kxb44 n00b

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    I just picked up a leftover 08 that I'm looking to set up the same way. What handguards are those?
    #51
  12. zxrider11

    zxrider11 Been here awhile

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    Tusk D Flex
    #52
  13. MotoBoss

    MotoBoss Bad Influence

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    My '07 set up for street/dual sporting I run a 13-50 sprockets. Can do most trails in 2nd and run the highway at 70+ comfortably.
    #53
  14. wickit

    wickit Adrenaline Junkie

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    We will see as I finally have my Vapor mounted up and working. I will post up what I end up with using both the Vapor and GPS. Will be swapping in some different sprockets. Currently I do know this (gps)...my 05 will not hit the limiter on a dirt road and tops out in the mid 80's (MPH) depending on surface. On pavement it hits 95 at the limiter. For me at the correct RPM (by feel) mine runs low 50's. I would not run it at 70 any contstant distance as the RPM's are too high. 05 running 14-50.

    Also when I am talking distance I am talking anything over five-10 miles at a time. A mile here and there is nothing and the bike is not at the same RPM usually on those short trips. I'm looking for the long haul longevity not just a year or two and a few hundred miles. I want this bike to last years without continual rebuilds or maintenance. I also want it to last thousands of miles so it can't be flogged continually for long stretches of time or miles or any bike would just wear out.
    #54
  15. zxrider11

    zxrider11 Been here awhile

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    I think 13/50 is stock gearing for the 07 and up WR's. Stock gearing for the earlier 450's was 14/50.

    I run 15/50 gearing, and my top speed is about 100mph. Still plenty of grunt for single track trails too.
    #55
  16. wickit

    wickit Adrenaline Junkie

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    GOD I LOVE RIDING THIS BIKE!!!!!! She is a one fun bitch to ride and always satisfies. So first ride since last fall. Last years first ride resulted in a new ACL. So here the results of the Vapor for 5th gear as that is all I am worried about.

    05 WR450 14/50 Sprockets

    1. It was dead nuts on both speed and RPM. Speed was compared to GPS speeds within .5mph, and hit the limiter within 200rpm.:clap

    2. 6000rpm = 50mph

    3. 7000rpm = 60mph

    4. 9000rpm = 80mph


    Goal is 70mph at 6000rpm. No more then 6500, and would not run constant 7000 for long distance all day.

    Anything less then 5800rpm I'm getting some chain jump and noise. 6000 it goes away and is right where the power and RPM feel perfect.

    So new sprockets info coming shortly. I don't know if I can get to where I want it to with sprockets.


    Temperature 40 or so degrees, and while running at test speeds engine was 111 degrees.
    #56
  17. blakrj

    blakrj Need to ride

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    I added one to my YZ. TrailTech instructions are as follows:

    "With the sensor held down firmly in the correct position on the caliper, insert an ink pen through the mounting hole on the sensor to mark for the drill location. Remove the sensor and drill a 1/8” hole through caliper mount. Use
    a sharp drill bit! Attach the sensor to the caliper mount with the screw provided. This is a selftapping screw - the hole size must be 1/8”."

    Worked just fine for me. Problems came later - use the billet mount - brake line caught on a jump. Unit does not like water - mine started fogging up from heavy rain and eventually died.
    #57
  18. stevh0

    stevh0 Super Retard.

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    Im running 15/39 on the motard and 8000rpm is about 110mph. I get a mean headshake around 125mph.
    #58
  19. LILBIT

    LILBIT Ride you must.

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    Make sure your jetting is good at that rpm. A little lean and the engine will chug worse and not be happy. That'll make chain slap. Adding a guide or extra pad on the top of the swingarm helps a bunch.

    Might as well go to a 15t CS. Much better wear. Look at the site -gearing commander - to see exactly what it'll take with out all the math.
    #59
  20. wickit

    wickit Adrenaline Junkie

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    Yes will start with a 15 up front, then a 47 out back. Just bought a 6.6 so as always cash leaves too fast. I don't know about jetting it to avoid chain slap at lower rpms. It only seems to have jump on flat ground just cruising. Any hill or pull and it is not there at all. After a 47 out back I should have a good idea of where to finish up with. Just did not want to have 50.00 sprockets collecting dust. Not suprised at all if I don't end up with a 45 or 43 out back. Will check out that page to see what it comes up with.

    Well checked out the page and if I ead it right it claimed over 100mph at 6k with 15/47. WTF????? Either I did something wrong or their math is fantasy land. Maybe someone else could run the numbers on a 04 WR450 and see what they come up with. No way in hell that bike is going 100mph + in 5th at 6k regardless of gearing as it would not have the power.
    #60