49cc 8 pole stator upgrade to 11/12 pole from 150cc?

[katt]

Someone upgraded 8 pole stator on 49cc to 11/12 pole stator for 150cc?

Or is there some dedicated aftermarket stator that outputs more watt's for 49cc QMB139?

[90GTVert]

Most would do the 11 pole stator or convert the 8 pole to full wave. I just did my 2T full wave. I used a Trail Tech reg/rec and floated the ground on the stator and some re-wiring. Runs a 40+W headlight on the battery and LED tail light and still easily gets over 14V charging just over idle with a good battery. I like that it's a quality reg/rec and it has a cool feature where it puts out power for lights so you don't need any other switch if you want lights on all the time when the engine is running. 11 pole should be even more robust with it's capabilities. You'll need the stator and reg/rec for it as well as some wiring. Here's part 1 of a 4 part series that Daniel Martin did when converting a 150 to 11 pole from 8 pole (same deal for a 139QMB for the most part).

www.youtube.com/watch?v=9f0MKAmKyww

[katt]

Jun 7, 2018 7:16:34 GMT -5 90GTVert said:

I just did my 2T full wave. I used a Trail Tech reg/rec and floated the ground on the stator and some re-wiring.

By "floated the ground" you mean you un-soldered ground from the base of the stator in order to remove AC ground going from stator base to scooter frame trough mounting bolts so in fact you did full wave conversion and DC conversion?

EDIT:

To summarize this is what i understand about stators available for GY6, correct me if i am wrong.

Physically stators are interchangeable between all GY6 engines because they all use same diameter Magneto Flywheel (ID 90mm, OD 110mm) according to specs found on partsforscooters.

We got different choice of stators installed on factory

49cc (139QMB) originally use

• 8 pole AC (Half Wave, 2 ignition coils)
• 8 pole AC (Half Wave)
  
• 8 pole DC (Full Wave?)
  

120cc / 150cc (152QMI / 157QMJ) originally use

• 6 pole AC (Half Wave)

• 8 pole AC (Half Wave)
  
• 8 pole AC (Full Wave)

• 11 pole AC (3 phase)
  
• 11 pole AC (3 phase)
  

• 12 pole DC (3 phase)

Difference between AC in DC stators

• AC stator - has dedicated CDI (ignition) coil, produces alternating current of about 90 volts due to thinner wire used.
  
• DC stator - despite its name DC stator still produce alternating current (AC)
  - does not have any poles dedicated to powering CDI, all poles are used for lighting
  - no need to "float the ground" wire, as can be seen on pictures here or here DC stator does NOT have ground connecting from coil to the base of stator (and subsequently to scooter frame), green ground wire bolted to the base of stator comes from scooter wiring harness.
  

We have two types of CDI  (ignition)

• AC CDI - draws AC current from stator, dedicated CDI high voltage coil located on the "AC" stator.
  (Stator -> AC CDI -> Ignition Coil -> Spark Plug)
  
• DC CDI - draws DC current from battery and converts to high voltage using built in power inverter (hence unit dimensions are almost twice as large compared to AC CDI).
  (Battery -> DC CDI -> Ignition Coil -> Spark Plug)

To summarize DC stators are used when you already have or want to convert to complete DC electric system all across your scooter, you might as well achieve this using AC stator except you would need to modify it and "float the ground"

As far as Regulator/Rectifier stock options for 11/12 pole 3-phase stators (120cc/150cc GY6)

• 3 input + 2 output wires Output: battery, ground
• 3 input + 3 output wires Output: battery, ground, battery input (for regulating battery charge)
• 3 input + 4 output wires Output: battery, ground, battery input, additional 12v+ wire.

[katt]

Installed 11 pole 3 phase generator today need to wire new regulator.

Do i need to connect each of 3 phases of generator to regulator in certain sequence or it does not matter?

P.S. Mystery why my old alternator was under powered is not because i had not enough poles it was dirt.

[katt]

From digging on the internet i find out order in which 3 pole (yellow wires) go into rectifier does not matter.

Basically with new alternator i run 3 wires from alternator to rectifier and connected it to battery, then used battery +12v line to hook up the lights, now my lights work from battery now, its DC setup with AC CDI.

I can also make a switch to turn headlights between battery and alternator if needed as a backup.

[katt]

So yeah installed 11 pole AC (3 phase) can someone recommend whats the max WATTAGE for LED headlights i can use with that generator provided i don't have any extra power consumption going on besides additional 4 additional LED stop signals.

[90GTVert]

I'd think you could use about any reasonable lighting with that setup. I think those can support 100W or a little more of load and still be able to keep the battery charged.

[katt]

Will headlight not melt at this high settings?

What light bulbs do you use in yours?

[90GTVert]

High powered bulbs can absolutely melt the stock plastic housings. I melted my TaoTao's headlight plastic using a Silverstar 55/60W H4 bulb. I've melted connectors with less power. I've only used halogen/xenon bulbs in stock housings much though. I use LEDs on my small scoots now, but I use systems that incorporate their own housings so it's not an issue.

[katt]

Aug 21, 2018 17:45:50 GMT -5 90GTVert said:

High powered bulbs can absolutely melt the stock plastic housings. I melted my TaoTao's headlight plastic using a Silverstar 55/60W H4 bulb. I've melted connectors with less power. I've only used halogen/xenon bulbs in stock housings much though. I use LEDs on my small scoots now, but I use systems that incorporate their own housings so it's not an issue.

Link please.

[90GTVert]

I've used a few of these. Find 'em in spot light or flood light versions, but spot light is what I've used. You can also find different versions with more or less watts. They have them in square/rectangular as well. Gotta be careful with their aim. I've had issues with cars flashing me at times thinking I've got a high beam on.
amzn.to/2nZmcwA




This is the most recent type that I've tried and I'm very happy with it. Best headlight I've had on a scooter and only 42W. They are designed for on-road use too, so they have a proper beam for that which won't blind oncoming traffic. Main bad thing is that it's a little larger than a lot of options.
amzn.to/2N63Epf

Should be used in a housing. You can get housings with a little different mount styles.
amzn.to/2nXf6c3 amzn.to/2BzQi3l





Lots of LED fog lights out there too that should be smaller.

[lostforawhile]

I'm doing the 11 pole conversion now, you want the three phase,because it's more efficient for the same power used to turn it.

[lostforawhile]

Aug 14, 2018 3:22:12 GMT -5 katt said:

Installed 11 pole 3 phase generator today need to wire new regulator.

Do i need to connect each of 3 phases of generator to regulator in certain sequence or it does not matter?

P.S. Mystery why my old alternator was under powered is not because i had not enough poles it was dirt.

The original single phase stator is very inefficient and can barely charge the battery

[lostforawhile]

I'll post some info later, I've found plug sets at amazon that match the China plugs on my scooter, you have 3mm pins and 6.5mm pins on the 6 wire regulator , I found a great kit on amazon, but the lock tabs don't match, you simply release the pins on the regulator and stator, and they fit the new plug housings. It's easy. On a standard 50, you tape off the original stator plug, and enricher plug then tie into the original regulator yellow wire for the lights, you run this through an ignition controlled relay,and power for the lights can come from the red wire at the new 6 pin regulator, the one that goes to battery. You need to tie the enricher into one of the three yellow phase wires coming from the new stator,and of course it needs a ground. The enricher originally runs on unregulated ac from the stator.

[lostforawhile]

Here's three pictures so far