kx500 power opinions

[Hillclimb#42]

A KX500 is powerfull.  A YZ250 is fast.  A 500AF is both powerfull AND fast 

wild claims  you reckon

It's probably helps my k5 is in a kx 250  (01) frame for a start. different geometry helps

piston had window mod, fmf pipe/muffler off a AF500, v force reeds ,and a good sandcross tyre

Thats why Service Honda makes AF bikes. Both of best worlds. If you believe that the technology of the 450 can use less power to go faster around a mx track than a 500, then its not a far cry to think a 250, which is comparable power to the 450 can keep up with a 500 that has not been changed for several years. Thats a very good point here. More power is not the same as more speed. They work together, but power is only one piece of the speed equasion.

[ID KX500]

Hey Tharden, I didn't read anything about what gear you are starting in. Are you at least starting in 2nd? 3rd may even work depending on your gearing and the traction factor. Not to many 250s can beat a 500 beyond 4th gear,,, at that point you should be walking away. That is why the KX500 is King of the Desert. I raced a tight and short course last week and got spanked,,, not where the 500 shines. They had a 200' hole shot, and only one half mile place to hit 5th, rarely out of 3rd. I do well on the 500 on long 4th-5th gear races,,long hill climbs, and long WOT stretches and you are passing even 450 4strokes.

[Bigtim]

heres a thought... race each other again on each others bikes. i mean you are family and all. thats a good test to see how much of the variable is actually rider skill/experience.

[mr.5thou sand]

It isn't surprising at all you got beat by a new 250.  We can stop pretending that 500s are that much faster than anything else. shoot u can stop pretending because honestly kx5"s are one of the faster kinds. i mean it would take a shi* load of bike to pull on my stuff..personally  i think kx 500s are bad in a line or through the dessert . scary fast

[KXDINO]

It's not a matter of kips working smoothly, the actuating arm position has affect on the range of power . the position affect where power is produced. when you loosen the  nut the shaft can be rotated to different preloads. if you don't have any preload on the shaft the kips won't fully open so you won't have any top end power . every time you take the cylinder off you must re set the preload on actuating arm.

[martinfan30]

It's not a matter of kips working smoothly, the actuating arm position has affect on the range of power . the position affect where power is produced. when you loosen the  nut the shaft can be rotated to different preloads. if you don't have any preload on the shaft the kips won't fully open so you won't have any top end power . every time you take the cylinder off you must re set the preload on actuating arm.

How much preload?

[KXDINO]

it all about trial and error

you just have to experiment  at the track , it's easy to do ,  i have mine set  so i can just feel the tension, then tighten the  nut up .

the hole in the shaft is parallel  to the ground, and the bike is vertical, it just a case of playing with the adjustment to suit your needs . it's a 2 min job


dino