Lowering Radiators XR650R

21 replies to this topic
  • JackAttack

Posted July 21, 2005 - 08:29 AM


No Toil Filter, new fender, spark plug, AND a new inner tube!!!!

:applause: :eek: :) :p :p

Hey Homodude,

Throw in a half bottle of Mobil red-cap, and I'll think you'll finally get some takers.


Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • XR650L_Dave

Posted July 21, 2005 - 09:04 AM


Its not just lowering the CG that helps, its also getting stuff on the same vertical level as the CG.
Moving the radiators down won't affect the CG much because they don't weigh much, BUT-

since a bike leans by rotating around the CG, moving the radiators down does decrease the size of the arc they describe around where the bike is actually pivoting, and making that arc smaller will decrease the amount of energy required to lean/rotate the bike.

All this is probably less important for a dirt bike, but for a street bike it can make a big difference.
A while back ELF decided to mount the gas tank below the bike, to lower the CG. Turns out the bikes were difficult to get into a turn because it moved the pivot point of the bike too close to the ground.
Turns out that when you lean a bike into a turn, the CG goes straight, and you steer the wheels out from under the bike. Going into a left-hand-turn, the wheels go right out from under the bike, the points above the CG go to the left, and the CG goes straight (and down).
After all that happens, the bike can begin to turn.


Related Content


Cle Elum Sunday 5/29: Looking for dual sport tips by TigerTanker

Dirt Bike   Dirt Bike Regional Discussion   Northwest
  • Hot  32 replies

FCR40 Tuning Woes- XR600R by aTuWitty

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • Hot  37 replies

Engine Loping/Sputtering by tcaldwell

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • 2 replies

Post Apocalypse, ThumperTalk style! by Justin Pearson

Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  35 replies

Wiseco 101MM Spark Knock Low Engine Temps by imandrewparks

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • 7 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.