11 coil stator and sliders installation. By Bashan (Read 6,804 times)

[tvnacman]

See Rich , I don't have the self control to hold the rpm's down myself . So I run heaver weights to limit rpm .

John

[Bashan]

OK, listen up Yorkie, I need this answered, third times the charm. When I hit 8K on the tach the RPMs dropped quickly but the speed increased. Now PAY ATTENTION! This isn't an ADD seminar! Normal variators and rollers do not do that. JOHN! Listen up! So is that a normal function of the performance variator and why? OK Sue, wake him up.... . That'll pull your jock up Yorkie! HAR! Just goofing John.....now answer the variator question. Quit hanging out in Central Park. Oh ick John.

[tvnacman]

Central park has plenty eye candy . As to why the rpm drops I'm unsure are you backing off the throttle ? If so I would think it has to do with jetting .

John

[Alleyoop]

I think you took something before you went on this ride. What your saying happened is smiley-alien011 way out there. Now did the tach drop but the actual motor did not slow down? Now I could see you backing off the throttle a little, rpms dropping and it gained more speed which would mean it is LEAN and it was getting hot and created a lot of resistance.

Or like mine I get it up to speed with some R's, and then once at the speed I want I back off the throttle and it runs at that speed with much lower rpms. Once the motor moves the weight and the movement is now forward the motors do not need all that power to keep it rolling. It is called eat my exhaust bonky
Alleyoop

[Bashan]

I did it three times and it did the same thing. It hit 8K and the RPMs fell off and the speed kept increasing. I am not crazy and I did not back off the throttle the last two times. I thought since it was a "performance" variator it might have some kind of different ramp profile. I will attempt to get some pix of the instruments while I'm riding to show what is happening. I have very little experience with performance variators and sliders and was just asking if this was, or could be, expected. I will sort this out and try some different sliders and see what happens since I cannot get a definative answer.

[Guitarman]

How far off does it fall?
Sounds to me like it shifted gears. But then you don't have gears...

[Bashan]

It fell from 8K to 6,5K, very smoothly and the speed did not drop and then kept climbing. To me it looked like it was designed into the variator. Maybe the ramps get steeper at the end or something. I'll pop it off of there and take a look. I also have a 115 outer pulley on it. Maybe that has something to do with it.

[Guitarman]

Maybe the belt is jumping on top of the pulleys? That would really change the RPMs and give you the max speed it can give. Stranger things have happened.

Open it up and see if the belt jumped up on the edge of the pulley.

Some rough guesstimates.

A 10 inch wheel would run like a 16 inch wheel with an extra half inch on the pulley. So if the belt jumps on top of the edges of the ramp and it's about a quarter of an inch difference then you reduce your rpms about 40% for the same speed. Sound about right?

[tvnacman]

maybe the rpm push the pulley all the way opened then , being its a higher gear (so to speak)the rpm drop but not the speed . I bet if you hold it long enough the rpm will come back up .

John

[Alleyoop]

Now there is a condition when the rpms will climb and then drop and climb and all this time you are still gaining speed. This can happen when the weights are to heavy for the motor. So next time just stay with it and see if the RPMS after dropping start to climb again as it is gaining speed.
Alleyoop

[Bashan]

Ah! Now those are all great points, kind of like the one on Andy's head. I'm kidding bradda! No really, good ideas. Now I can quit being all pouty. It was causing lines y'all, don't do that to me. Good grief, that's causing lines too!

[tvnacman]

maybe you have a defective tack , if all feels and runs good let it slide .

John

[Bashan]

Tach seems good but who knows. So I'll install the Tiny Tach on it and see how that does. Right now I have a gut feeling Alley's idea might be it. The problem is I was hauling arse so much when it did it I'm a little hesitant to be going that fast on the thing for experimentation. It was getting a little squirrely and I am not dying on a scooter. I'm not curing cancer here. It's a good scooter but it's got design limits. I've got an old Tom Tom GPS around somewhere, I'll hook it up too and just see how fast this thing is actually going. If I lower the weights a little and it stops doing that, or reduces, that would prove Alley's theory out. I have to cut a tree down and two computers to go out....I'll work it in somehow.

[Bashan]

OK I installed the Tiny Tach and the GPS on the wife's scooter:

It turns out her speedo and tach are pretty close. So the RPM varience is real. It goes up to 8K+ RPM and then drops to 6.5K. Then escalates and then comes down and repeat. Alley and Pedro have both said it is probably a clutch main spring problem and I agree. I have an orange spring sitting around and I'm going to install and try it this weekend. By the way, it was popping 58 MPH on the GPS on a flat surface when I shut down because a SUV turned in front of me. I think I could have nudged 60 if given a bit more time. Maybe if I get the clutch working correctly it will pop 60 even easier. Going to have to think on that one. Rich

[Deleted]

Bashan:

I have quite a few questions about your upgrades. Specifically the stator regulator combination and the replacement CDI.

What was the amperage output of the original stator/regulator and what was the regulator duty cycle?

What is the amperage output of the replacement and again the duty cycle of the new regulator?

The next two questions will probably be more appropriate to the part supplier, but you may be able to supply the answers.

What is the timing advance curve per 100 rpms as well as the max timing advance of the replacement CDI?

Does the replacement CDI have any timing retardation or does it only have positive advance?