No speed sensor hey, isn't the timing affected by the speed of the quad? If so how does the timing get changed on the V-Force if it can not sense the speed it is travelling at? Can't we trick the CDI into thinking it has a speed sensor, like attach a device that will send the proper signal to the CDI telling it, its going a certain speed. I just wish the modulator will work with the V-Force.

 

BBertram,
You are on the right track suffice to say rpm is major point with respect to rev limit on the cdi. LIke I have said before the cdi can be over clocked by a percentage but it inversley affects the timeing by the same percentage. If you increase the rev limit by 20% you loose total timeing by the same 20% not good trade. The only way to prevent this is to eliminate the cdi from the ignition totaly or build a new cdi with new perameters.

 

why doesn't someone build cdi's? they do iginitions for trucks and cars what would make it so difficult to make a JetChip type device for an atv???

l8r
cart

 

I have a quick jetting question does anyone know what effect shorter slide springs would have on the stock jetting for a P650.

Thanks

 

It shouldn't affect the jetting, but will allow the throttle to open faster. If you had any hesitation when hitting the throttle from a dead stop, it will be worse with shorter springs, IF the shorter springs have the same tension as the stock springs.

 

Alltoys, does the RED650 module have 3 or 4 wires, and do I have to cut any stock wires to use it?

 

FYI for those interested Naber Kawasaki is out of the modules as of 2pm est 8/5/03. I'm on a waiting list. They will receive more in 1 to 2 weeks.

 

I have a question about the clutch weights. If the belt rides to the top of the drive pulley and to the bottom of the driven pulley then thats as fast as the P650 will run. How will changing weights make it run faster. I do understand that it can make a P650 Quicker but not faster on top end.

Can anyone explain to me how changeing clutch weights makes the P650 gain more top end??

 

KOD

This is as simple as I can explain it.

If stock you turned 6500 RPM's, your belt was to the bottom of the driven and top of the primary, as you described, you are going as fast as the p650 can go.

You change to lighter weights, with the same configuration, it raises your RPM's because your clutch is now lighter and it is easier to turn. You have gain speed because whatever distance your tire travels with one turn of the clutch, you have now add more turns per minute, therefore more speed.

You can get the same effect by lighten your clutch.

 

KISSOFDEATH... lets look at it inversely... if the belt is as far down in the rear pulley, as it will go, & as far up the front pully as it will go, then changing the weights will not make the quad go any faster... but if the rear spring pressure is great enough, (i.e. black or some other stronger spring is installed ), that the belt is not fully bottomed out in the rear pulley, then in theory, heavier weights can add additional force to the front pulley forcing the belt lower into the rear pulley, & higher on to the front pulley... if the belt is at the bottom of the rear pulley, but not all the way to the top of the front pulley, extra weight will not make the quad go faster... this is where as SHOTGUN was talking, a longer or wider belt would help... WAM

or as SHOTGUN beat me to the punch... drilling out the pulley & lightening the load has the same effect as putting aluminum wheels instead of steel wheels, by reducing the driven load on the engine... WAM