Shineray X1 - mixed CG engine to bike?!

**NZBrakelathes** · 03-13-2016, 02:11 AM

One other question
DC CDI should it be able to run without a battery? I can change the phases to either run with or without a battery
If you know let me know

**humanbeing** · 03-13-2016, 02:49 AM

Originally Posted by NZBrakelathes

One other question
DC CDI should it be able to run without a battery? I can change the phases to either run with or without a battery
If you know let me know

ALL depends on the CDI design (some works on dirty input while some don't) ... Use a cap "store some energy / smooth the waveform" http://www.motorfans.com.cn/bbs/view...originator=yes IS OK in theory (will the cap burst in long term, nobody guarantees) ...

**humanbeing** · 03-13-2016, 02:53 AM

Originally Posted by NZBrakelathes

That really throws a spanner in the works Huh
Dual spark? Sparks each revolution? Or 2 spark plugs?

2 spark plugs http://www.google.com/patents/CN2934638Y?cl=en

**NZBrakelathes** · 03-13-2016, 02:57 AM

What's your suggestion?

**humanbeing** · 03-13-2016, 03:17 AM

Originally Posted by NZBrakelathes

What's your suggestion?

Open the case & watch what's inside is the only way to make sure what's what
Single OR dual

on rotor as 02:40

Stator type... etc
2 diameter [88.? or 93] | 3 bolt hole pattern [most CG] isosceles triangle, [CB] parallel , [Honda CG, Jialing] equilateral triangle

**MJH** · 03-13-2016, 07:41 AM

Originally Posted by NZBrakelathes

I've got no idea what is different - could be how it sees the engine etc
I'd think it's a bit like software and these clash

I could try find a DC unit etc and I've seen leads to convert but the leads come with the fancy changeable CDI

The CDI gets a consistent supply of 14-15v DC off the R/R that it stores as it’s a capacitor. It gets a signal from the trigger direct off the stator with each rotation, the curve is a preconfigured curve for releasing the spark to the coil. A CB climbs faster in RPM then a CG so the firing would be different. It is all integral, the rate of current, and the firing increases with rpm.
With a DC R/R all that is connected is AC power source, ground wire to the stator, the CDI gets a DC supply from the stator through the RR and an AC supply direct from the trigger. There is an electromechanical firing order to the coil between the trigger and then when the CDI actually fires the coil. That’s a curve as in a run X over Y, its linear simply put a rise over a run. Changing a curve is about altering increasing or decreasing, timing.

**NZBrakelathes** · 03-13-2016, 01:39 PM

The CDI gets a DC current from the stator? But stator is all AC
There are 2 15v AC out puts connected and the trigger AC that's blue
On the bike loom the 2 phases of AC are yellow - so I would think its both the same? Only difference I can make it do is run with or without a battery
Would think only running with a battery would be a cleaner DC to CDI
But being able to run without a battery is easier if the battery is flat

**MJH** · 03-13-2016, 07:42 PM

Originally Posted by NZBrakelathes

The CDI gets a DC current from the stator? But stator is all AC
There are 2 15v AC out puts connected and the trigger AC that's blue
On the bike loom the 2 phases of AC are yellow - so I would think its both the same? Only difference I can make it do is run with or without a battery
Would think only running with a battery would be a cleaner DC to CDI
But being able to run without a battery is easier if the battery is flat

LOL yes the AC stator feeds (2) get rectified to (1)DC output in the R/R, that feeds to the CDI in yours it is supposed to come off the R/R, in an AC system the High Voltage feed you got shocked with connects direct to the CDI, the RR in those only charges the battery.

Yes the AC feed would be equal and opposing waves, they overlap one up when the other is down, the RR flatten that out. The output for the trigger is or should be low voltage AC like 1-2volts and direct off the stator to the CDI. The rest is all connected to the battery and so is all your other lines, lights, horn....down the loom.

**NZBrakelathes** · 03-14-2016, 08:52 AM

Ok so actually there's no diodes in the RR
It uses the 2 highs of the wave to get some flat line that's like DC not such a true DC then
Yes single wire to 2 pin plug is the very low voltage 1v at most and tests fine - that's the trigger wire to CDI Blue with white
High voltage AC line not connected cause that's the AC CDI feed and not needed in this case as its s DC CDI

**MJH** · 03-14-2016, 02:49 PM

Originally Posted by NZBrakelathes

Ok so actually there's no diodes in the RR
It uses the 2 highs of the wave to get some flat line that's like DC not such a true DC then
Yes single wire to 2 pin plug is the very low voltage 1v at most and tests fine - that's the trigger wire to CDI Blue with white
High voltage AC line not connected cause that's the AC CDI feed and not needed in this case as its s DC CDI

Keep in mind DC as current only flows in one direction (+), the RR uses diodes to alter AC (-)(+) alternating waves into a DC current, I found this link from Tufts Univ, that offers a good explanation.
http://www.eecs.tufts.edu/~dsculley/...s/diodes3.html