|
|
Post by Danielle Belle on Mar 11, 2018 16:21:20 GMT -5
What is the normal idle for a 50cc gy6? Mine is currently at 2200 is that to high?
|
|
|
|
Post by jackrides on Mar 11, 2018 17:06:14 GMT -5
Its fine.
|
|
|
|
Post by pinkscoot on Mar 11, 2018 20:53:27 GMT -5
Is that when the engine is warmed up and the enricher off? 1900-2000would be better.
|
|
|
|
Post by Danielle Belle on Mar 11, 2018 21:18:55 GMT -5
Yeah after it warms up for a min or two it usually stays at around 2200-2300 rpms. Should I adjust the idle screw a little?
|
|
|
|
Post by jackrides on Mar 11, 2018 21:38:25 GMT -5
Fantastic Pic!
|
|
|
|
Post by greginisn on Mar 11, 2018 23:23:07 GMT -5
I would suggest a little lower idle speed if you can do it. Just to give you more of a buffer range before the rear tire starts spinning. Problem being you will probably need / want to adjust the idle mix if you go for a lower idle so unless you are able to adjust the mix screw it might be better to just leave it alone.
Good luck, Greg
|
|
|
|
Post by tocoo on Mar 12, 2018 2:37:54 GMT -5
My scooter is odd, because when the autochoke is OFF, it runs around 2100 RPM, but even after it warms up for 10minutes, the engine turns off at the next red light [when I use the brake only, if I slow down and stop without braking, the RPMs go down around 1300 RPMs before going up around 1900].
Once I use the scooter, the idle RPM is around 2000 RPM at the red light.
If I select the idle RPM at 2000 or even 1900 right after the autochoke is OFF, then at the red light, I get 1700-1800 RPMs [sometimes even lower] and I fear that the engine shuts off.
|
|
|
|
Post by dexameth on Mar 14, 2018 9:14:57 GMT -5
Both of my scoots are set up to idle between 1600 and 1800, right around factory specs. I've seen owner's manuals list 1500 +/- 100 and 1800 +/- 100.
Sometimes when the motor is nice and warm and I know the idle mix is good, I'll turn out the idle speed screw slowly and test the lowest idle without stalling. So far I've gotten around 1050 sustained just thumping there. Bored fun.
|
|
|
|
Post by benji on Mar 14, 2018 9:20:04 GMT -5
I think the 'proper' idle speed is one that allows the scooter to run while on the stand with the rear wheel in the air, and the rear wheel isn't turning but is almost trying to turn.
|
|
|
|
Post by GrumpyUnk on Mar 14, 2018 22:43:21 GMT -5
You don't want to go too slow, as the 'splash' lubrication will be lessened at a slow idle speed, AND the blower will flow less cooling air. You don't want to go too fast, as controlling on coastdown could be 'interesting', and the clutch shoes will be flipping a bit as the idle goes up and down, rubbing on the inner diameter of the clutch bell and then 'not'. IMO, better to be disconnected completely, as in the clutch is not near engaging rather than being so close, which also should allow coastdown to a stop to be more controlled by the rider rather than the idle setting.
I thought the spec was in the 1500 rpm range, and I'd have no problem going to 1300-1400 if the idle was stable. As they say, "it depends".
tom
|
|
|
|
Post by tocoo on Mar 15, 2018 3:43:48 GMT -5
do you guys keep the throttle open at a red light or long stop, or you do not touch the throttle at all ?
|
|
|
|
Post by 90GTVert on Mar 15, 2018 7:13:33 GMT -5
If you've got the idle set right and all else is well, you shouldn't have to mess with the throttle while stopped. I do it sometimes out of paranoia if the RPM seems a little low. Even if you try to keep in tune, idle can change a bit thanks to conditions. You really shouldn't have to hold the throttle regularly though. If you have to do that, bump the idle speed up slightly or tune both the speed and mixture to get a better result.
|
|
|
|
Post by 3strokeengine on Mar 16, 2018 9:38:09 GMT -5
My scooter is odd, because when the autochoke is OFF, it runs around 2100 RPM, but even after it warms up for 10minutes, the engine turns off at the next red light [when I use the brake only, if I slow down and stop without braking, the RPMs go down around 1300 RPMs before going up around 1900]. Once I use the scooter, the idle RPM is around 2000 RPM at the red light. If I select the idle RPM at 2000 or even 1900 right after the autochoke is OFF, then at the red light, I get 1700-1800 RPMs [sometimes even lower] and I fear that the engine shuts off. That sounds like a vacuum leak to me or the mixture screw is set too lean (which they often are from the factory to make the bloody EPA happy). Get some carb spray and spray it around the intake manifold as the bike is idleing on the center stand, if the RPM changes you know you have a vacuum leak. Edit: also the only way to know the choke is comming off is to watch the plunger extended with the choke assembly out of the carb and 12 volts applied to the element, it should fully extend in about 30 seconds. If the carburetor stays in fast idle it will run all sorts of funny in the lower rpms once warm I like to keep the idle around 1800-2000 to keep oil moving and charge the battery well |
|
|
|
Post by dexameth on Mar 16, 2018 10:24:07 GMT -5
My scooter is odd, because when the autochoke is OFF, it runs around 2100 RPM, but even after it warms up for 10minutes, the engine turns off at the next red light [when I use the brake only, if I slow down and stop without braking, the RPMs go down around 1300 RPMs before going up around 1900]. Once I use the scooter, the idle RPM is around 2000 RPM at the red light. If I select the idle RPM at 2000 or even 1900 right after the autochoke is OFF, then at the red light, I get 1700-1800 RPMs [sometimes even lower] and I fear that the engine shuts off. That sounds like a vacuum leak to me or the mixture screw is set too lean (which they often are from the factory to make the bloody EPA happy). Get some carb spray and spray it around the intake manifold as the bike is idleing on the center stand, if the RPM changes you know you have a vacuum leak. Edit: also the only way to know the choke is comming off is to watch the plunger extended with the choke assembly out of the carb and 12 volts applied to the element, it should fully extend in about 30 seconds. If the carburetor stays in fast idle it will run all sorts of funny in the lower rpms once warm I like to keep the idle around 1800-2000 to keep oil moving and charge the battery well  |
|
|
|
Post by zummerp on Mar 22, 2018 16:13:09 GMT -5
My idle is 3000 with a top end of 8200... what could possibly cause that?
|
|
