Ignition/cdi alternative

[Yrrol]

Hi!

I have modified my original stator so that it has a pvl 1052 coil instead of the China crap coil.

Just the coil change made a huge difference in my engine, it usually stall from time to time on idle..
But now it idles just fine and never stall, seems like there is a bit more torque to.

The next step is to find a really tiny pickup coil, do you guys know a good model?

The goal is to run a Ducati cdi from a minarelli am6 if i can find a suitable pickup coil..


Thanks for all the help i can get!
Best regards / simon from sweden

 

[LewieBike]

Seems like a good setup for a hot spark but the timing on the CG engines ( I think..) is triggered by the voltage collapse as the magnet passes.

I assume you mean the trigger coil that most Honda clone pitbike engines and any modern motorcycle engine uses. I'd do some research of the Ohms resistance of the pickup coil required and if the coil needs a magnet working with the trigger coil to activate the CDI.

The armatures that most of the Honda Clone horizontal engines use come with the proper trigger coil and if used with the 5 pin CDI sold for the same clone engines, you should be able to use it as the trigger source. It will need an AC source of at least 70~90 Volts open circuit to run the Chinese Honda clone CDI with trigger.

I like the old style Swedish two piece crank/bottom bracket of your bike. Those are very sturdy crank/bearing sets.

 

[Yrrol]

Seems like a good setup for a hot spark but the timing on the CG engines ( I think..) is triggered by the voltage collapse as the magnet passes.

I assume you mean the trigger coil that most Honda clone pitbike engines and any modern motorcycle engine uses. I'd do some research of the Ohms resistance of the pickup coil required and if the coil needs a magnet working with the trigger coil to activate the CDI.

The armatures that most of the Honda Clone horizontal engines use come with the proper trigger coil and if used with the 5 pin CDI sold for the same clone engines, you should be able to use it as the trigger source. It will need an AC source of at least 70~90 Volts open circuit to run the Chinese Honda clone CDI with trigger.

I like the old style Swedish two piece crank/bottom bracket of your bike. Those are very sturdy crank/bearing sets.

The Honda clone engines (cg250 and so on) have a thick pickup/trigger that is to big to place in the Yd casing.
I have around 14mm between the rotor and the casing but cant find Any good trigger/pickup alternative that fit in the tight spot.

Even started to think of building my own pickup coil from a relay coil (100ohm) and a tiny magnet for one side of the relay coil

doesnt think the voltage will be any problem with the pvl coil in this case

Oh the crank is from a old Swedish military bicycle (m/35) from 1935, they where a little wider and 5mm longer than the civilian version on my Husqvarna 1955 bike.
Its the original bearings and everything från 1935, just cleaned it and added lots of grease from the 60's. (Old grease seems to stick better)

 

[LewieBike]

The Honda clone engines (cg250 and so on) have a thick pickup/trigger that is to big to place in the Yd casing.
I have around 14mm between the rotor and the casing but cant find Any good trigger/pickup alternative that fit in the tight spot.

Even started to think of building my own pickup coil from a relay coil (100ohm) and a tiny magnet for one side of the relay coil

doesnt think the voltage will be any problem with the pvl coil in this case

Oh the crank is from a old Swedish military bicycle (m/35) from 1935, they where a little wider and 5mm longer than the civilian version on my Husqvarna 1955 bike.
Its the original bearings and everything från 1935, just cleaned it and added lots of grease from the 60's. (Old grease seems to stick better)

I'm referring to the horizontal 50 to 150 cc pitbike engines I am not certain but I believe their pickups aren't that big.

 

[Yrrol]

I'm referring to the horizontal 50 to 150 cc pitbike engines I am not certain but I believe their pickups aren't that big.

Oh, they are the same as the one with standing cylinder

You can use the same cdi on both 250 and the 125cc, probably on the even smaller 4 strokes to but i haven't tried that.
It all basicly depends on if you have the ac or dc wiring for the cdi

Chat gpt told med that the rotor on my yd100(?) needs a pickup coil without a built in magnet to work properly.
If i go with the standard Chinese pitbike pickup with built in magnet i would have gotten four trigger signals according to chatgpt, i have no clue..

So i went out and took a look in the ignition scrap bin and found a working pickup for a typical cheap China inner rotor kit for pitbikes.
Could probably make it fit, i was able to disassemble the coil from the core in one piece so it seems promising.

Started working on a aluminum bracket to hold the pickup to, i will file up the holes so i can adjust the distance easy.

Any thoughts on my choice of pickup coil or on how many trigger signals i will get with this setup?

Is there anybody in here that have made something similar to my little setup?