|
|
Post by docxen on Feb 9, 2013 13:10:00 GMT -5
I had a big bore kit installed on my Romeo 50cc to a 100cc but it had little improvement. I am wondering if a no rev cdi modular could help. The mechanic said it didn't have a governor. Would this give any improvement and if so how much. Thanks for the help. Any other tips to help would be appreciated. Besides the get a faster scooter tips.
|
|
|
|
Post by millsc on Feb 9, 2013 13:25:02 GMT -5
Let it break in, it will get better
|
|
|
|
Post by docxen on Feb 9, 2013 13:28:49 GMT -5
i'm over 500 miles total 100 miles after the big bore
|
|
|
|
Post by edfr on Feb 9, 2013 13:39:42 GMT -5
A cdi that is rev limited usually will limit the RPMS to around 7000, but you will notice it when it reachs the RPM limit it will DROP the rpms and pick up again, so you will be bounceing up and down on the RPMS if you keep the throttle at WOT.
Lefty
|
|
|
|
Post by OverReved on Feb 9, 2013 13:46:43 GMT -5
A cdi that is rev limited usually will limit the RPMS to around 7000, but you will notice it when it reachs the RPM limit it will DROP the rpms and pick up again, so you will be bounceing up and down on the RPMS if you keep the throttle at WOT. Lefty The RPMS could be limited and not be noticeable. Your description of RPM that "bounce up and down" when the limiter is reached would be accurate for a system that turns off the ignition spark but not for a system that retards the timing to accomplish the limiting effect. Higher end ignition systems use the spark advance to dictate maximum rpm. |
|
|
|
Post by docxen on Feb 9, 2013 16:27:42 GMT -5
that's for the help but i'm a newb could you say that again in English great big guru dawg? lol
|
|
|
|
Post by edfr on Feb 10, 2013 1:57:11 GMT -5
A cdi that is rev limited usually will limit the RPMS to around 7000, but you will notice it when it reachs the RPM limit it will DROP the rpms and pick up again, so you will be bounceing up and down on the RPMS if you keep the throttle at WOT. Lefty The RPMS could be limited and not be noticeable. Your description of RPM that "bounce up and down" when the limiter is reached would be accurate for a system that turns off the ignition spark but not for a system that retards the timing to accomplish the limiting effect. Higher end ignition systems use the spark advance to dictate maximum rpm. Let me explain how a Rev-Limited CDI works so in the future you can also pass it on. Once the rev limited CDI reachs the fixed rpms it was programmed for it delays the next release of voltage to the coil which in turn drops the rpms and it repeats if you stay on the throttle. Here is a little prof of what I was saying watch the RPMS on the left, now most if not all 50s do not have a tach but you will feel the it in your seat. In addition to seeing what a rev limiter does, notice how Slow the RPMS RISE and DROP It is running LEAN. Also hear the POPPING when coming down to IDLE that is Also running LEAN and or the IDLE is set to low. Lefty |
|
