GP300/18 Power Valve Tweaks

[memphis2857]

Originally Posted by ropheo

No, you don't need longer chain with 13/50 sprockets. You can reverse a distance blocks on an axle. I did it, on the begining chain is a little tight, but in tolerance.

I just tried 13/50 on mine tonight and it wouldn’t work. The axle wouldn’t even go in without the blocks. I will need at least 1 more link and probably 2.


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[Doc Brown]

Originally Posted by memphis2857

I just tried 13/50 on mine tonight and it wouldn?t work. The axle wouldn?t even go in without the blocks. I will need at least 1 more link and probably 2.


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As I said. Guess why I know

[Motocrotts]

Spoke with RK TEC and he told me to set the pv at 2-5/8 to 2-3/4 turns out. He also said the stock head is a horrible design. I'm sending mine in Monday.

[memphis2857]

I totally disagree with his suggested PV settings and I’m guessing you will too. Having it out that far will make it a light switch.


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[Doc Brown]

Agree with that memphis2857.

I still have the problem that the power comes too fierce once the throttle is opened more than half.
Going uphill in second with low revs, then open the throttle further and th epower really kicks in brutal and it wants to lift the front. Thats a pain to control...

I tried everything from 1 turn out to 3 turns out in quarter steps but the problem remains

I also had the impression that with 2,5 turns out it had less torque than with 2 turns out...

[Motocrotts]

Mine is at 2-1/2 now and it is great. Maybe thats the setting he likes after their head mod? I have great torque and smooth power at 2.5 turns out.

[Doc Brown]

Tried 1.5 turns today in technical stuff and it worked very nice, bit smoother than my buddies with 2 turns out. Its great to have the opportunity to ride two identical bikes back 2 back...