Starting to work out why the ignition is working that bad.
The first step is collecting information, also investigating if its possible for a modern ignition system.
Need to open her up.
![](images/20200918_180005_jkr2cllc.jpg)
Air gun.
![](images/20200918_195436.jpg)
Flywheel extractor.
![](images/20200918_195557.jpg)
Coming off.
![](images/20200918_195628.jpg)
Stator base plate is 94mm
![](images/20200918_212521.jpg)
Flywheel end cone is 10,5mm
![](images/20200918_213724.jpg)
Flywheel end cone 13,1mm
![](images/20200918_213732.jpg)
13,65mm marked on tapper.
![](images/20200919_162252.jpg)
37,75 - 18,45 = 19,3mm
Here shown 19,3mm on tapper
![](images/20200919_162420.jpg)
Tapper length 21,5mm
![](images/20200920_121748.jpg)
![](images/cone-hoek_gpv7al2u.jpg)
Tapper length 15mm
![](images/20200920_121800.jpg)
![](images/tapper-klein.jpg)
Investigating iff this works
Rotor should fit the Motom
The 068R030
![](images/068RABC.jpg)
Curve may work on a Motom
The: 068C068
![](images/068_curve_1c_068_full.png)
First impression is good.
![](images/20201005_182646.jpg)
The tapper/cone is correct.
![](images/20201005_182650-0-.jpg)
Two of the three bold do fit, perhaps a tiny modification will make three bolds possible
![](images/20201005_184331.jpg)
Cover still fits.
![](images/20201005_184743.jpg)
First impression is good, think this may work.
![](images/20201005_184854.jpg)
The idea is to use the second curve from the CDI but with the base plate lowered so the max advance is about 28 a 29 degrees
My Motom engine will have its performance between 2000rpm and 6000rpm
![](images/Ignition-curve.jpg)
The original Motom curve will be a flat and steady curve because of its fixed point.
The HPI curve only second curve will be used for max HP.
The stock fourstroke curve an example of a average ignition curve.
With a bid off, turning all three bolds fit.
![](images/20201006_194222.jpg)
Need to investigate if this is acceptable.
![](images/20201006_194730.jpg)
Had to use the base plate because the rotor was sitting too high compared with the stator.
Also, I could adjust the ignition better with the use of the base plate. This could be useful when I need to fine tune the timing point.
Starting to change the base plate.
![](images/20201006_182421.jpg)
Enlarged the inner diameter.
![](images/20201006_183443.jpg)
Max internal diameter.
![](images/20201006_184843.jpg)
Changed the service.
![](images/20201006_185831-0-.jpg)
Making a marker tool.
![](images/20201008_173455.jpg)
Tiny but OK
![](images/20201008_173521.jpg)
In to its place.
![](images/20201008_173740.jpg)
Giving a clean mark.
![](images/20201008_174247.jpg)
Using countersunk bolts, so the stator also locks them when mounted
![](images/20201008_181509.jpg)
Stator mounted.
![](images/20201008_181833.jpg)
Rotor mounted.
![](images/20201008_181833.jpg)
Cover mounted
![](images/20201008_184356.jpg)
It still looks like an stock ignition.
![](images/20201008_184349.jpg)
Finding the original ignition point.
![](images/20201010_104559.jpg)
Original marks.
![](images/20201010_105118.jpg)
The ignition point is at (around) 3mm that is 29 degrees.
But it's difficult to measure so think I'm close with saying its between 28 a 29 degrees.
![](images/20201010_111644.jpg)
![](images/uitreken-hoek.jpg)
Made a big ground cable for the ignition coil so I'm sure that's OK.
Ground cable goes directly inside the wiring loom so I will have all the wires at the coil.
![](images/20201010_114619.jpg)
Manually setting up the HPI ignition, at 2mm like the manual says.
![](images/20201010_122732.jpg)
Placed the CDI underneath the seat so I can access the CDI.
![](images/20201010_152110.jpg)
The cables for selecting the ignition curves.
![](images/20201010_152418.jpg)
Easily pushed away so all is clear.
![](images/20201010_152434.jpg)
A nice tight bent.
![](images/20201010_152516.jpg)
Trying to keep it as clean as possible.
![](images/20201010_152607.jpg)
![](images/20201010_152554.jpg)
![](images/20201010_141212.jpg)
Looking at the end result.
![](images/20201010_153544.jpg)
The Dellorto is looking good.
![](images/20201010_153621.jpg)
Also exhaust is looking good.
![](images/20201010_153650.jpg)