142f charger coil?

[Hyratel]

I can find all sorts of mentions and parts for 2-stroke CDI "white wire accessory" and generator coil kits, but nothing for 4-stroke like the Huasheng 142f. putting a meter on the killswitch wires gives me 2.5v AC at idle, 3.7v revving. is there any way to pull power off the magneto during the exhaust/intake stroke, when the coil is just sitting there?

 

[The_Aleman]

The standard 142F's electrical system simply isn't designed to power any accessories. If you want aux power, you'd have to run some type of a generator like a bottle genny, hub genny, or a rechargeable battery pack.

A while back there was a guy who wound up his own generator for use on the GXH50 and 142F, but he disappeared.

 

[Hyratel]

The standard 142F's electrical system simply isn't designed to power any accessories. If you want aux power, you'd have to run some type of a generator like a bottle genny, hub genny, or a rechargeable battery pack.

A while back there was a guy who wound up his own generator for use on the GXH50 and 142F, but he disappeared.

I think I found that thread and his videos on YT, but technical details are thin on the ground - the best I can find is 1000 turns and two-pole core. I'm wondering if a single speed shaded-pole motor stator ground down to fit close on the rotor would work

 

[Hyratel]

does anybody have pics of the underside of the 142f flywheel and the space behind it on the engine block? I'm wondering if there may be room for a 2-pole generic stator and necessary mounting holes

 

[CrazyDan]

Any energy you sap off the engine will lower power to the wheel. If you want lossless energy, use the heat coming off to generate energy.

 

[Hyratel]

I'm a skinny dude, and the 142 has power to spare, especially at top end. I still have room in the throttle at high cruise. and sapping 20-30W off a 1500W engine isnt even enough to notice, especially compared to the mechanical drag of a wheel dynamo. wheel dynamos are also only rated around 0.5A, 6 or 12v, voltage RPM-dependent . a full AC-DC Buck/Boost regulator on a pulse alternator will potentially give a lot more juice at run or idle. you might need to up the idle screw setting a touch but it won't be much