Stefan Merriman's 2013 WR450F race bike


11 replies to this topic
  • MidlifeCrisisGuy

Posted August 25, 2014 - 06:03 AM

#1

http://transmoto.com...-yamaha-wr450f/

 

"For events held entirely in these trickier conditions, a heavier flywheel weight is used to help the rear Dunlop find traction."

 

So much for reducing reciprocating mass to make the bike feel lighter !

 

 



  • GP1K

Posted August 25, 2014 - 07:52 AM

#2

http://transmoto.com...-yamaha-wr450f/

 

"For events held entirely in these trickier conditions, a heavier flywheel weight is used to help the rear Dunlop find traction."

 

So much for reducing reciprocating mass to make the bike feel lighter !

 

Flywheel weight is only part of the equation there. The piston, con rod and crank all play a part as well. Bigger displacement means more weight for all those components, and more reciprocating mass affecting handling.



  • Monk

Posted August 25, 2014 - 07:59 AM

#3

Bike looks good!

  • RockerYZWR

Posted August 25, 2014 - 08:01 AM

#4

Good find - interesting to me that they went with the stock front brake. And I guess bark busters and radiator guards are for the weak!

  • avlisj

Posted August 25, 2014 - 08:05 AM

#5

How do I get that carbon fiber tank!

  • cracker please

Posted August 25, 2014 - 12:25 PM

#6

You would probably have to get rid of the battery to run that lower subframe?  That ECU looks cool too, I never seen that one before.



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  • GP1K

Posted August 25, 2014 - 12:29 PM

#7

Midlifecrisisguy doesn't have a battery/starter/etc... he might be able to do it.



  • stevethe

Posted August 25, 2014 - 06:07 PM

#8

You would probably have to get rid of the battery to run that lower subframe?  That ECU looks cool too, I never seen that one before.

 

ECU is a Vortex X10 listed for the 07-11 WR450's and earlier. http://www.vortexcdi...neric.php?cid=1



  • Krannie McKranface

Posted August 25, 2014 - 09:35 PM

#9

Pfftttt....

 

Mine's tricker than that...for a leaky carb version...



  • mikenash

Posted August 26, 2014 - 06:19 PM

#10

ECU is a Vortex X10 listed for the 07-11 WR450's and earlier. http://www.vortexcdi...neric.php?cid=1


That's not going to work with the 2012-2015 bikes as there fuel injected.

  • Krannie McKranface

Posted August 26, 2014 - 06:27 PM

#11

That's not going to work with the 2012-2015 bikes as there fuel injected.

 

Vortex makes an ECU for whatever you want.

 

You clicked on the Ignition only link, not the ECU link

 

http://www.vortexcdi...neric.php?cid=3



  • YamaLink

Posted August 28, 2014 - 06:37 AM

#12

I've seen Stefan race Six Days before. It's insane what he and the other top Euros can do on a bike in the nastiest conditions that are nearly impossible to walk let alone race on. That bike is awesome!






 
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