Maintenance & Technical > KX500 Original

Decreasing power for newer 500 owners

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Friar-Tuck:
 I know this is not orthodox.  I (like I'm sure most other folks) have spent my time searching out how to increase performance, not taking it out.
   The best scenario is getting the bike having had a good bit of expierience.  Sometimes it just doesn't work out that way.   So for whatever reason an owner finds themselves piloting these things, what can a new owner do to de-tune the engine to a more controlled experiment without doing any permanant damage to either themselves or the engine.
     Re-gearing the sprockets for more top end.
(Which seems contradictory, however it does decrease acceleration.)
   
A throttle with a cam (for more than a 90 degree idle to W.O.T.)
 
  I thought about either an additional base gasket & or an additional head gasket.   Reducing compression.
Would the base gasket just move the timing or not be worth the effort.   
   
  Another Idea I had was to adjust the power valve to less than optimal engagement. It would still move (preventing carbon fouling)  but kick in a tad later with less than maximum results.

 A set of fiberglass reeds ( less tesion ) and setting the ignition timing to the center mark on the stator plate.
 And lastly, using a less than perfect  expansion chamber.
 I don't think any of this will actually do any damage to the engine, and reversing the process one step at a time may be alot less intimidating.
   
If anyone else has any suggestions or comment on the stuff I could think of please post up.
  Tuck\o/

bigbellybob:
i would suggest starting out on a 250. all that stuff will move the power around but its still going to have a lot. or just give the bike some respect take it easy and dont grab a handful tell your ready. ride in a higher gear would also help tame the beast.

Motorrad:
Smaller carb. 

Best thing I can reccomend.  And have done for friends.  Go find the slowest enduro throttle you can find...    I swear some require a 3/4 rotation for wfo.  Best and cheapest fix for a novice rider

blueoval:
I think selling it and buying a more appropriate bike is the answer.  It is has always baffled me (maybe I am just easily baffled) that people with minimal experience on a dirt bike end up with a kx500.  I just can't figure this out. 

Dutch-K5 Fan:
I like the idea of a smaller carb and slower throttle. Don't what to give up power to much.
And don't think that a shame to tame the beast. I whant it to make it smoother, and as far as I know.
Every kx500 factory rider has done this. So why not mortall man like us?
How many of us are using a flywheel weight??? They smooth out the hit.



Dutchie 

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