Good Morning All,
1983 pa50ii
Looking at the HPI ignition and it says it has a 12v lighting coil but does that change the whole system to 12v? Can I then use a 12v battery, 12v turn signals, 12v gauge, etc?
My current setup has a 6v AC to 12v DC converter in the system so I can run an LED headlight and its not a very elegant solution. Thought maybe the HPI might offer additional advantage over just better ignition system.
Thanks,
Looby
If you go with the mini rotor it will provide 12v AC which you can use to rewire the bike to a full 12v DC system, or just leave it AC and use the stock system with 12v bulbs and add a voltage regulator.
I don't know hobbits that well but someone might chime in with a good way to do this.
technically you can run your LED headlight on AC voltage. the headlight will flicker and will probably be noticeable at lower RPMs. but the flick Hz will be determine by RPM, so you just gotta go faster until its faster than the Human eye can detect.
is it a bug? or a safety feature?
can your converter handle 12V AC coming from the light coil? (edited)
I dont know if my current converter is working correctly anyway as the key and kill switch dont work but the headlight works and shouldnt on 6v alone per headlight specs.
If I did the HPI I would have to replace my converter but I just wasnt sure what that system put out. If its 12vac it sounds like I can convert that to 12vdc and SHOULD be able to run a 12v battery/lights/etc like in a regular 12v system. (Charging battery might be iffy but we shall see)
Im glad I asked though because in my mind I was expecting it to put out 12vdc.
So I have 3 hobbits and one magnum all with hpi mini.
To get the hpi 12 v ac to 12v dc putting out decent amperage I utilize 2 different solutions.
1. 5 wire trail tech which requires a battery to function
2. Separate 2 wire trail tech voltage regulator / separate silicon rectifier.
I do not use the frame as a ground other than for the ignition circuit.
I don't understand how you are going from 6v ac to 12 v DC with your set up. Have you verified this with a multimeter ?? A lot of LEDs that are meant for 12v can sort of work putting at other voltages.
I have used the stock wiring harness with some modifications.
If you are wanting LEDs for the fun of it , it depends on how much effort you want to put into your ride. If you need light as a necessity buy a 1000 lumen nightrider.
Sorry I misspoke Im running 6vdc to 12vdc converter to allow me to use leds for headlight and turns.
Plan (theory in my head) was system outputs 6vac and then rectifier in system changes it to 6vdc to charge battery. I put the dc/dc converter in line with the harness "after" the battery so
Stator -6vac-> rectifier -6vdc-> 6v battery -6vdc-> dc/dc converter -12vdc-> wiring harness.
Currently im bone stock but considering the HPI and the product pages Ive seen didnt really answer what I was looking for. I wired all this before the bike ever ran so it was all theory.
DC/DC converter
https://www.amazon.com/gp/aw/d/B019GY2FLW?psc=1&ref=ppx_pop_mob_b_asin_title
Headlight being run: (10v-30v input)
https://www.amazon.com/gp/aw/d/B08P48L35T?psc=1&ref=ppx_pop_mob_b_asin_title
> Full Tuck wrote:
> -------------------------------------------------------
> technically you can run your LED headlight on AC voltage.
If your LED headlight is not designed to work with AC voltage you will just burn it out faster. Once you get past the reverse breakdown voltage the LED is conducting a ton of current without putting out any light; it'll run much hotter and live less long.
Rectify and regulate for long lasting lights!
> C Looby wrote:
> -------------------------------------------------------
> I dont know if my current converter is working correctly anyway as the
> key and kill switch dont work but the headlight works and shouldnt on 6v
> alone per headlight specs.
Have you checked the actual voltages being generated?
Also, "6vac" and "12vac" systems produce quite a bit higher than that at high rpm. Voltage and frequency go up as rpms increase.
> If I did the HPI I would have to replace my converter but I just wasnt
> sure what that system put out. If its 12vac it sounds like I can
> convert that to 12vdc and SHOULD be able to run a 12v battery/lights/etc
> like in a regular 12v system. (Charging battery might be iffy but we
> shall see)
Yep.
> Marc Friedman wrote:
> -------------------------------------------------------
> I don't understand how you are going from 6v ac to 12 v DC with your set
> up. Have you verified this with a multimeter ?? A lot of LEDs that are
> meant for 12v can sort of work putting at other voltages.
Rectify -> regulate -> boost converter
Easy peasy.
I have not checked it since I got it running. I checked voltages around the harness and got 12vdc with all the lights and turn signals working at 12vdc.
I failed to go back and do anything since I got it running but yeah I definitely need to check.
> b to the eff wrote:
> -------------------------------------------------------
> Also, "6vac" and "12vac" systems produce quite a bit higher than that at
> high rpm. Voltage and frequency go up as rpms increase.
> ken gilbert wrote:
> -------------------------------------------------------
> > b to the eff wrote:
>
> > -------------------------------------------------------
>
> > Also, "6vac" and "12vac" systems produce quite a bit higher than that
> at
>
> > high rpm. Voltage and frequency go up as rpms increase.
>
> https://www.mopedarmy.com/forums/read.php?1,4339595,4340755
Nice data! Thanks for sharing. :-)
Thats awesome data to have!
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