If that is the case I cannot run a 55/60w lamp. The science - there will be a current divider circuit. Okay I am shelving the experiment for a while and will do a total DC conversion in the near future.
No I opened the stator of Ambition because the rewinding guy wanted to see the motorcycle stator. Since I am currently using Uni and kept ambition aside, I couldn't open Uni's stator.

Shree, I've a doubt, in a RR, first the regulation stage and second is the rectification stage as AC requires for the lighting. How come in a shunting process current can be limited? Current limiting is happening at the rectification stage AFAIK. Then how can it be distributed as per some pre defined proportion? I think ur example is bit exagrated as the main power requirement is for lighting and low requirement is for batt charging in case of stock setup as the batt powers mainly for starter, horns etc. Something like 60:40 ratio. Has anyone done with a Uni rewinding? But as u said earlier, Ruby electricals giving a separate RR after rewinding, that makes some sense.

Abhi, u can en light us in this.

Hey Shree, did u rewind the Uni to use the HID or with the stock coil+rr? I dont remember may be aging.


U didnt answer my earlier post Is it a direct fit?

I have no idea either how it is divided!

if it is addressed to me
I am sorry. By posting the picture of Ambition stator I may have caused some confusion. Ambitions stator has got nothing to do with Uni's and current discussion. Thats only for an Idea, I opened it for learning purposes only because I am not using ambition and if any mistake happens I got nothing to lose. I don't know if that can be fitted into Uni.

Ohm's law and Kirchoff's law. Total current is branched/divided using resistances. so if the lighting circuit current is limited by a resistor, no matter how much current is available it is limited by the resistor unless it fails. This is the basics of current division, don't know how it is implemented in RR.

If there is no pre-defined distribution then the bulbs would fuse at higer rpms right?

Taking it back.

@sandeepcf
uni coil cant be rewinded with the stock rr as th rr is taking both phases from the coil and mixing the pow3er,then one part is converted to dc to charge the battery and the other part is a limited 3.5 amp supply to ac circuit.
you can convert it to full dc by floating the ground and giving the full power to rr,ask shree about this.also the ape rr method is also there.ape will produce more amps hence a 55/60 bulb can be used.
a total load of 100 watts is more or less the limit of these type of coils if used with full wave rr units.no more then that.stock rr if used properly can pull a 55/60 but in b2b traffic there can be low batt issue as the chaging rate is less the ape rr.
ALSO I SUDDEGEST YOU PLEASE POST THE QUARRIES IN PROPER PLACE,NOT BY HIJACKING OTHERS THREAD!

@ MODS-i request you to please close this thread as the purpose is already solved.lomg live xbhp.thank you.

Tested the example on friends Unicorn after rewinding with stock RR unit. A 55w bulb cried to glow. After changing the RR to one provided by Ruby it started glowing fine.

I didn't rewind the coil bcz the juice stock RR provided was sufficient to run HID all day !! But not the 55/60w

PM the same to MOD's.

already did to aryan.he is not around i think.

What is the type of current that I am getting at Uni's RR which lights the headlamp.
Picture 1 - Multimeter is reading AC correctly.
Picture 2 - Multimeter is reading DC correctly.
Picture 3 - MM set to read DC and I am getting negative readings. As you can see from the picture Red probe of MM is connected to yellow wire of RR and Black Probe connected to ground/body. And as RPM increases the readings change weirdly. what explains this.
Picture 4 - MM set to read AC.

[QUOTE=drvmtm;454578]@sandeepcf
uni coil cant be rewinded with the stock rr as th rr is taking both phases from the coil and mixing the pow3er,then one part is converted to dc to charge the battery and the other part is a limited 3.5 amp supply to ac circuit.
By Phase if you mean AC and DC you are wrong. These are types of current and not phases. Phases exist in AC only. And RR is not taking both types of current from the coil. DC cannot be produced from a stator. Infact all the current produced from generators/alternators is AC. How did you calculate the 3.5A?

you can convert it to full dc by floating the ground and giving the full power to rr,ask shree about this.also the ape rr method is also there.ape will produce more amps hence a 55/60 bulb can be used.
a total load of 100 watts is more or less the limit of these type of coils if used with full wave rr units.no more then that.
Unicorn produces 125watts(with grounded coil) and Ambition produces 120watts(ground removed and connected to RR. This is its stock setup)

stock rr if used properly can pull a 55/60 but in b2b traffic there can be low batt issue as the chaging rate is less the ape rr.
ALSO I SUDDEGEST YOU PLEASE POST THE QUARRIES IN PROPER PLACE,NOT BY HIJACKING OTHERS THREAD!
Cmon man Let me improve my electricals as well. As all your queries were answered and concluded there will be no harm if I continue this thread. If you still feel it is inappropriate let the Mods take care by moving it to appropriate section.

^^ You are getting these bogus reading because a multimeter is made to operate at standard 50Hz in AC mode. But the stator power frequency fluctuates beyond this range.

There is a but. In the first picture the MM measured the raw voltage produced by the stator correctly at idle as well as at higher RPMS and at full throttle the measurement was 79volts. so frequency of the stator voltage can be measured by my MM before regulation/rectification.
Also when I connected a bulb and measured the current the result was 3.25Amperes. so current measurement was correct but not the voltage reading.
Why is the polarity reversed? Is it also error from MM? I'll confirm the polarity tomorrow.

[QUOTE=sandeepcf;455056]Well thats a interpretation mistake in Phase IMO.

Yes its clear now and the pic made me wrong conclusions. Hey how did u calculate the output? If Uni is producing 125W then it will be taken care of an HID as Shree said as the lighting current is limited to a max of 50W incl console lights. So what would be with a re- winded coil 160W? Wanna beat a 200W P220?

Sandeep if u post in a new thread too u'll get the support from the techies and I think if the thread starter has an opinion like that it would be fine in that way. Its my suggestion only and the call is urs.

From my pictures,
Output from Unicorn's RR which supplies power to Headlamps etc is "-ve" with respect to Ground. Can anyone explain this please.

I got the wattage from Service/shop manual of Unicorn and Ambition. Yes shree is correct, lighting current is limited. Yes a HID can be fixed on Uni without any modifications. I am currently using 55/60w connected to battery and no issues at all. I wanted to rewind because I thought that it will increase the lighting current, but one statement from shree and baam..

I completely agree. I should have started a new thread. But that can be explained in a good way like you did and not as if I intruded into private property.
I didn't like the word Hijack, and also posting in CAPS is often referred to as shouting isn't it.

Anyways I got answers to most of my queries.
-> Current is divided in Unicorn's RR for lighting and charging, the lighting current being limited to a predetermined value.
-> Lighting current in Unicorn is not AC.
Thank you sajjit, abhijeet, esp shree.
Finally please try to find an explanation to
1. Reverse Polarity
2. Weird voltages at different RPMs.