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Thread: Street legal WR450F

  1. #41
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    Quote Originally Posted by Markw View Post
    The Euro WR450F (which has turn signals) weight is listed as 129kg. If you subtract 7.2kg for fuel (yes it has a micro fuel cell) that gives an unfueled weight of 121.8kg. The stock KTM 500 EXC weight is 111.5kg. That makes the KTM 10.3kg lighter. Not sure how you calculate only a 3kg weight difference?
    Yamaha USA's wet weight listing of 273 lbs (123.8 kg): http://www.yamahamotorsports.com/spo...0/0/specs.aspx
    I can't see 4 turn signals and a mirror weighing 5kg.

    The 500 is listed as 266.4-lb (120.8) wet weight here: http://www.off-road.com/dirtbike/rev...est-53918.html

  2. #42
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    Quote Originally Posted by Twinrider View Post
    Yamaha USA's wet weight listing of 273 lbs (123.8 kg): http://www.yamahamotorsports.com/spo...0/0/specs.aspx
    I can't see 4 turn signals and mirrors weighing 5kg.

    The 500 is listed as 266.4-lb (120.8) wet weight here: http://www.off-road.com/dirtbike/rev...est-53918.html
    The US model WR250F is not street legal which is why it's lighter. I suspect there are other differences than just turn signals, between the US and Euro model (mirrors, exhaust system, stator).

    For the KTM 500 EXC weight, it is listed as 111.5kg on the KTM website. Are you suggesting that they are massaging their numbers?
    http://www.ktm.com/us/enduro/500excu...l#.U-VhJk0cRlU

  3. #43
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    Quote Originally Posted by Markw View Post
    The US model WR250F is not street legal which is why it's lighter. I suspect there are other differences than just turn signals, between the US and Euro model (mirrors, exhaust system, stator).

    For the KTM 500 EXC weight, it is listed as 111.5kg on the KTM website. Are you suggesting that they are massaging their numbers?
    http://www.ktm.com/us/enduro/500excu...l#.U-VhJk0cRlU
    That's the dry weight, aka without fuel.
    Weight without fuel, approx. 111.5 kg

  4. #44
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    Quote Originally Posted by Twinrider View Post
    That's the dry weight, aka without fuel.
    Yes, that's why I subtracted 7.2kg for fuel from the Euro WR450F wet weight, for an Apple to Apple comparison.

    KTM 500 EXC unfueled weight = 111.5kg
    Euro WR450F unfueled weight = 121.8kg

    If you buy a WR we can have a weigh off. The winner takes both bikes

  5. #45
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    Quote Originally Posted by Markw View Post
    Yes, that's why I subtracted 7.2kg for fuel from the Euro WR450F wet weight, for an Apple to Apple comparison.

    KTM 500 EXC unfueled weight = 111.5kg
    Euro WR450F unfueled weight = 121.8kg

    If you buy a WR we can have a weigh off. The winner takes both bikes
    I'm American, going by US spec. Slap 4 led winkers and a mirror on it and I'm ready to rock at 125 kg.

  6. #46
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    Default Street legal WR450F

    Quote Originally Posted by Twinrider View Post
    I'm American, going by US spec. Slap 4 led winkers and a mirror on it and I'm ready to rock at 125 kg.
    I reckon you should fly the flag and spoon some knobbies on to your Road King and win on maximum numbers for all specs (other than power!) :-)

  7. #47
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    Looks like fun:


  8. #48

    Default Street legal WR450F

    Quote Originally Posted by Markw View Post
    I reckon you should fly the flag and spoon some knobbies on to your Road King and win on maximum numbers for all specs (other than power!) :-)
    Where's my popcorn.

  9. #49
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    Quote Originally Posted by Markw View Post
    I reckon you should fly the flag and spoon some knobbies on to your Road King and win on maximum numbers for all specs (other than power!) :-)
    Happy to do a dyno shootout against your 4 valve air cooled twin. You might win on hp but I will crush you on torque (and leg room).

    The all time classic HD dirt vid.

  10. #50
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    Here is a very good review of the WR that also covers the weight.
    http://www.mctrader.com.au/news-and-...eid/79350.aspx

  11. #51
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    Default Street legal WR450F

    Quote Originally Posted by Twinrider View Post
    Here is a very good review of the WR that also covers the weight.
    http://www.mctrader.com.au/news-and-...eid/79350.aspx
    "Getting back to the weight issue, there are a few factors to be considered that are not immediately apparent. For a start that claimed weight represents the bike with mirrors, indicators Ė the whole homologation package. Take that off and fit the competition kit (two hoursí work, apparently) and the weight comes down to 124kg.
    Bear in mind thatís weighed with a full fuel tank and you can take near enough to another 7kg out of the equation, so call that 117kg. Thatís still heavier than the KTM, but itís not so damning
    ."

    So stripped down, without any road going gear, the unfueled WR450F is 117kg. But you can't ride it on the road like this can you...

    Anyway, I haven't ridden one so have no idea, but the Dirtrider test rider said he felt that it's heavy. Just something to keep in mind when comparing the bikes.
    Last edited by Markw; 09-08-14 at 10:57 AM.

  12. #52
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    Quote Originally Posted by Markw View Post
    "Getting back to the weight issue, there are a few factors to be considered that are not immediately apparent. For a start that claimed weight represents the bike with mirrors, indicators – the whole homologation package. Take that off and fit the competition kit (two hours’ work, apparently) and the weight comes down to 124kg.
    Bear in mind that’s weighed with a full fuel tank and you can take near enough to another 7kg out of the equation, so call that 117kg. That’s still heavier than the KTM, but it’s not so damning
    ."

    So stripped down, without any road going gear, the unfueled WR450F is 117kg. But you can't ride it on the road like this can you...

    Anyway, I haven't ridden one so have no idea, but the Dirtrider test rider said he felt that it's heavy. Just something to keep in mind when comparing the bikes.
    Yamaha knows how to build featherweight race replicas but for dirt bikes they tend to place more emphasis on strength and durability. For example, the WR450F features a strong steel subframe capable of hauling some gear, which adds to the weight but which I would find useful. ATEOTD few kgs wouldn't make a difference to me.

  13. #53
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    Default Street legal WR450F

    A bit older now, but a good assessment from the MXA guys on the 2012 WR450F. Also included is Q&A with Yamaha 450R designer Hiroshi Itou and his views of the challenges faced when creating this type of bike.

    http://motocrossactionmag.com/bike-t...-yz450f-engine

  14. #54
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    Adam Riemann films team blue.


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    Quote Originally Posted by Twinrider View Post
    Adam Riemann films team blue.
    AR makes great offroad videos.

    You going to get a WR450F then? With FI you'd have no problem making it up to the 5th station at Fuji...

  16. #56
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    I would LOVE to have that bike. Maybe someday...

  17. #57
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    These are sold in Australia and they can be rego but the weight and small tank (about 60-70kms of trail riding before fuel light comes on) put them at a huge disadvantage to the KTMs and Huskys which have larger tanks and also have higher spec suspension, 10kg lighter, especially as there isnt much difference in price.

    I was quite surprised that these bikes aren't sold with rego etc domestically in Japan though - I guess I just assumed being made there and being able to meet Aussie rego requirements which are very strict they would be. Its a pity as the 250F looks pretty good. Yamaha needs to make a 350 (WR350F) using the 250 as a platform and they would sell like hot cakes or a WR450R with decent oil capacity and a large fuel tank but perhaps the market is rather small for those.

    Then I might go buy one or two :)

    Here's a link to a good Aussie ADV thread on these bikes.

    http://advrider.com/forums/showthread.php?t=388247
    Last edited by Lucky Pete; 30-04-15 at 08:36 AM.

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