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Post by jskyking on Jul 10, 2013 13:22:49 GMT -5
I turned the FA mixture screw 1/4 turn clockwise. Not much difference in the low end acceleration on the kickstand.
Further analysis/observations: On the test run this morning, the engine isnt powering up until about 1/3 throttle movement. In addition, there is a spot in the throttle where the engine nearly bogs to shutdown. Both observations originate from a full stop or very slow speed. Once you get pass these two areas of throttle lag, the scooter moves out.
Lastly, I noticed while adjusting the carb FA mixture that there seems to be air in the fuel filter. In otherwords, it's not completely filled up. Vacuum leak?
Any ideas would be appreciated.
thx
jt
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Post by jskyking on Jul 9, 2013 14:58:32 GMT -5
I just finished putting my Rocketa 150cc back together with new clutch/variator. Thanks to several people out there on his website.
Scooter is very slow to accel at the stoplight/sign. When I twist open the throttle it sputters a little, so I relax the throttle position and then re-twist. The engine catches up and away we go at a normal pace. The scoot runs very nice at the high end speeds. Going downhill, the engine has an inordinate amount of popping while at a closed throttle position.
On the kickstand, with no load on the scooter, the engine idles and accelerates normally.
The carb has been thoroughly cleaned, and I think that I have adjusted the F/A mixture according to Allyoop's instructions, though I dont have tach. Had to do it by ear.
I am planning on replacing the 14g rollers at the suggestion of others, to 13 g, but I think I may still have a low speed bog down problem, but not real sure.
As always, a little guidance is very appreciative.
thx
jt
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Post by jskyking on Jul 9, 2013 11:06:48 GMT -5
Sorry for the lack of response- on travel. Yesterday, I finally got the scoot back together with the new parts. Good top end, slow out of the blocks. With the 14g rollers that came with the NCY perform package. I'm going to give the 13g rollers a shot and change out the main jet and get a uni-filter and see if that improves the performance.
WIthout taking the carb apart, does anyone know the mm size filter for a Rocketa 150 cc GY6. In addition, a good main jet recommendation?
thx
jay
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Post by jskyking on Jun 27, 2013 17:31:28 GMT -5
a happy medium
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Post by jskyking on Jun 27, 2013 11:36:03 GMT -5
I am in process of replacing the clutch and while I'm at it, I am replacing the variator as well. Because of my weight ( 225#) and the neighboring geography ( hilly), I am going to a 1000# torque spring with 1000" clutch springs.
Curious to know if anyone has recommendations in the variator roller weight application?
It is a gy 6 Rocketa 150cc.
thx
jt
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Post by jskyking on Jun 24, 2013 21:38:55 GMT -5
I need to find a good ,reputable on-line scooter parts dealer that offers good customer service and good reliable parts.
thx
jt
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Post by jskyking on Jun 24, 2013 17:25:21 GMT -5
There's a substantial difference between my junky part and your quality part.
thx
jt
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Post by jskyking on Jun 24, 2013 16:49:40 GMT -5
This is the first time ordering parts for my scooter. Does anyone have any recommendations? While I'm at it, Im going to replace the clutch, belt, carb, sliders, torque springs etc.
I think that I am going to go with the Heihin Carb, a kevlar belt, !000# tq spring with 6g rollers or sliders, and the clutch manufacturer- I am unsure about?
Any direction would be appreciated.
jt
Rocketa 150CC GY 6
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Post by jskyking on Jun 24, 2013 14:59:54 GMT -5
Attached is a picture of the clutch.Each of the outer three sides ( between the fiber clutch materials covering up the thin stacked thin plates ) of the clutch is missing large pieces of cast metal. In addition, there are hairline stress cracks in each of three holes in the cast metal housing just outside of the springs. So, I'll start with a clutch replacement, and probably go ahead and replace the belt, clutch springs, torque springs, and rollers at the same time. thx jt Attachments:
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Post by jskyking on Jun 23, 2013 20:17:05 GMT -5
Testing is being done with all components in place. I the coil and air cleaner as well- good ideas. thx
jt
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Post by jskyking on Jun 23, 2013 8:35:22 GMT -5
Alley Ooop,
Thx. I will check the throttle play for .25 and then move on to the CVT . Thanks for the video. Much appreciated.
jt
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Post by jskyking on Jun 22, 2013 21:26:54 GMT -5
Thanks for the input. I havent had the variator apart. Tomorrow, I will remove the CVT cover and examine the inner workings of the belt, clutch, and the clutch pulley. Just a thought, the throttle cable adjustment bracket assembly, with multiple carb installs and removals the assemble may have been moved one way or the other on the threads ( 1 or 2 max) Could this be a contributing factor?
thanks again.
jt
ps. is there any pics of what the CVT, belt, variator should look like?
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Post by jskyking on Jun 22, 2013 18:00:08 GMT -5
The scooter is on the dual point kick-stand:
Ive got the Fuel/air mixture set per the instructional guidance. Now, no combination of F/A settings or Idle adjustments on the Carb will make the rear wheel stop spinning while the motor is running.
When I tap the rear brake, the wheel stops and the motor immediately dies. I can adjust the idle screw low enough to make the wheel stop turning, but the motor dies about 2 nanoseconds after the wheel stops.
Ive tried all combinations of fuel/air and idle screw adjustments and nothing is working. IT's like the engine isnt from the drive train when the scooter slows down- this was the original problem. However, in the earlier scenarios, I was able to hold the brake and keep the throttle cracked to keep the engine running while slowing to a stop.
Still puzzled. Thx for any advice.
jt
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Post by jskyking on Jun 22, 2013 11:56:35 GMT -5
Thanks for the tips. Yes, I did an initial adjustment on the F/A Mixture screw, but then I reset it with the requisite, full -in clockwise then 2.25 turns counter-clockwise. The instructional feedback regarding the fine-tuning should help get the carb dialed in.
Still curious on the vacuum line set-up from the canister to the carb. For the time being, I have the cannister vac line plugged with a golf tee.
jt
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Post by jskyking on Jun 21, 2013 22:21:44 GMT -5
Rocketa MC-46-150: I just completed cleaning the carb and jets, engine idles good on the kickstand, but when I rapidly twist the throttle there is a significant hesitation before the engine catches up. Once engine catches up, then it is strong thru the remainder of the power band.
The fuel and vacuum lines are brand new. I plugged the vacuum line going to the charcoal ? cannister.
Any ideas are greatly appreciated.
thx
jt
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