Author Topic: A simple CDI unit for Partner  (Read 506 times)

0 Members and 0 Guests are viewing this topic.

Offline chy_farm

  • 5 cube
  • ***
  • Posts: 149
  • Karma: 22
  • Location: Yokohama, JAPAN
A simple CDI unit for Partner
« on: April 29, 2016, 11:36:36 am »
Early last year an old Partner came to me with her CDI unit broken, she was R417T manufactured from 1974 according to Mike's site.

http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/9eda198b7f2281e588256afd004bb92e?OpenDocument
(Mike's site shows her displacement as 85cc but it's not correct, may be 55cc. )

Here showing videos of first experiment, some modification to the capacitor, and the last one with a small and simple circuit for this homemade CDI.

1: https://www.youtube.com/watch?v=QOu8ocmSQY8

2: https://www.youtube.com/watch?v=m25HGBV9trw

3: https://www.youtube.com/watch?v=6XSMr7vu3yo

--------------
Chy


(McCulloch) PM6,PM320,SP40,PM484,10-10A,PM610,35A,47,300,450,PM800,1-70,1-80,740,740(mod),795,SP125C
(Echo) CS-302,CS-502EVL,CS-60S,CS-601S VL,CS-803EVL,CS-803EVL(mod),CS-651T
(Homelite) DM 50,Super Mini S,Super XL-9225,Super 1050
(Partner) 1614/Mini P,R417T,S55,R14T,R12,R12,K12S,
(Stihl) MS-180C,08S,070AV,084AV
(Shindaiwa) Pecker A110,E305AV
(Dolmar) 123,PS 7900
(Jonsereds) 49SP,455
(Husqvarna) 550XP
(Tanaka) TCS-33EDTP
(Makita) EK-900
(Alpina) A40

Social Buttons

Winner Winner x 1 Informative Informative x 1 View List

Offline chy_farm

  • 5 cube
  • ***
  • Posts: 149
  • Karma: 22
  • Location: Yokohama, JAPAN
Re: A simple CDI unit for Partner
« Reply #1 on: April 30, 2016, 06:21:25 pm »
Here showing a segment from IPL below.

She has two coils,

one for
a) pulser coil and exciter coil

the other for
b) primary coil and secondary coil.

(McCulloch) PM6,PM320,SP40,PM484,10-10A,PM610,35A,47,300,450,PM800,1-70,1-80,740,740(mod),795,SP125C
(Echo) CS-302,CS-502EVL,CS-60S,CS-601S VL,CS-803EVL,CS-803EVL(mod),CS-651T
(Homelite) DM 50,Super Mini S,Super XL-9225,Super 1050
(Partner) 1614/Mini P,R417T,S55,R14T,R12,R12,K12S,
(Stihl) MS-180C,08S,070AV,084AV
(Shindaiwa) Pecker A110,E305AV
(Dolmar) 123,PS 7900
(Jonsereds) 49SP,455
(Husqvarna) 550XP
(Tanaka) TCS-33EDTP
(Makita) EK-900
(Alpina) A40
Like Like x 1 View List

Offline chy_farm

  • 5 cube
  • ***
  • Posts: 149
  • Karma: 22
  • Location: Yokohama, JAPAN
Re: A simple CDI unit for Partner
« Reply #2 on: April 30, 2016, 06:28:24 pm »
And a schematic here;

A couple of pink stuffs in the schematic is oscillo proves, not the parts of the circuit.

(McCulloch) PM6,PM320,SP40,PM484,10-10A,PM610,35A,47,300,450,PM800,1-70,1-80,740,740(mod),795,SP125C
(Echo) CS-302,CS-502EVL,CS-60S,CS-601S VL,CS-803EVL,CS-803EVL(mod),CS-651T
(Homelite) DM 50,Super Mini S,Super XL-9225,Super 1050
(Partner) 1614/Mini P,R417T,S55,R14T,R12,R12,K12S,
(Stihl) MS-180C,08S,070AV,084AV
(Shindaiwa) Pecker A110,E305AV
(Dolmar) 123,PS 7900
(Jonsereds) 49SP,455
(Husqvarna) 550XP
(Tanaka) TCS-33EDTP
(Makita) EK-900
(Alpina) A40
Like Like x 1 Informative Informative x 1 View List

Offline chy_farm

  • 5 cube
  • ***
  • Posts: 149
  • Karma: 22
  • Location: Yokohama, JAPAN
Re: A simple CDI unit for Partner
« Reply #3 on: April 30, 2016, 09:16:27 pm »
Here it is the circuit for it.

This circuit sits under the flywheel cover.

(McCulloch) PM6,PM320,SP40,PM484,10-10A,PM610,35A,47,300,450,PM800,1-70,1-80,740,740(mod),795,SP125C
(Echo) CS-302,CS-502EVL,CS-60S,CS-601S VL,CS-803EVL,CS-803EVL(mod),CS-651T
(Homelite) DM 50,Super Mini S,Super XL-9225,Super 1050
(Partner) 1614/Mini P,R417T,S55,R14T,R12,R12,K12S,
(Stihl) MS-180C,08S,070AV,084AV
(Shindaiwa) Pecker A110,E305AV
(Dolmar) 123,PS 7900
(Jonsereds) 49SP,455
(Husqvarna) 550XP
(Tanaka) TCS-33EDTP
(Makita) EK-900
(Alpina) A40
Like Like x 1 Informative Informative x 1 View List

Online sharkey

  • Piped Saw
  • *****
  • Posts: 364
  • Karma: 36
Re: A simple CDI unit for Partner
« Reply #4 on: May 01, 2016, 07:53:59 pm »
WOW.  Good Job!  Can you tell us how to get rid of the limiters on the cdi's used on these newer saw engines?  They usually start to drop spark around 12,500 rpm and make it really tough to tune.

Offline chy_farm

  • 5 cube
  • ***
  • Posts: 149
  • Karma: 22
  • Location: Yokohama, JAPAN
Re: A simple CDI unit for Partner
« Reply #5 on: May 02, 2016, 07:45:09 am »
Hello Sharkey, thank you for visiting and leaving a nice and interesting tip, but I did not know things about limiters on today's saws. My saws are mostly very old except for Husky 550XP.
Do you have a schematic of these limiters?

(McCulloch) PM6,PM320,SP40,PM484,10-10A,PM610,35A,47,300,450,PM800,1-70,1-80,740,740(mod),795,SP125C
(Echo) CS-302,CS-502EVL,CS-60S,CS-601S VL,CS-803EVL,CS-803EVL(mod),CS-651T
(Homelite) DM 50,Super Mini S,Super XL-9225,Super 1050
(Partner) 1614/Mini P,R417T,S55,R14T,R12,R12,K12S,
(Stihl) MS-180C,08S,070AV,084AV
(Shindaiwa) Pecker A110,E305AV
(Dolmar) 123,PS 7900
(Jonsereds) 49SP,455
(Husqvarna) 550XP
(Tanaka) TCS-33EDTP
(Makita) EK-900
(Alpina) A40

Offline chy_farm

  • 5 cube
  • ***
  • Posts: 149
  • Karma: 22
  • Location: Yokohama, JAPAN
Re: A simple CDI unit for Partner
« Reply #6 on: May 04, 2016, 09:43:57 am »
>I did not know things about limiters on today's saws. My saws are mostly very old except for Husky 550XP.
>Do you have a schematic of these limiters?

Doesn't any body have better information about this schematic?
Chy

(McCulloch) PM6,PM320,SP40,PM484,10-10A,PM610,35A,47,300,450,PM800,1-70,1-80,740,740(mod),795,SP125C
(Echo) CS-302,CS-502EVL,CS-60S,CS-601S VL,CS-803EVL,CS-803EVL(mod),CS-651T
(Homelite) DM 50,Super Mini S,Super XL-9225,Super 1050
(Partner) 1614/Mini P,R417T,S55,R14T,R12,R12,K12S,
(Stihl) MS-180C,08S,070AV,084AV
(Shindaiwa) Pecker A110,E305AV
(Dolmar) 123,PS 7900
(Jonsereds) 49SP,455
(Husqvarna) 550XP
(Tanaka) TCS-33EDTP
(Makita) EK-900
(Alpina) A40

Offline 3000 FPS

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 3933
  • Karma: 214
  • Location: Carpenter, Wyoming
Re: A simple CDI unit for Partner
« Reply #7 on: May 04, 2016, 11:03:35 am »
Ok very nice and good work.

I have a few questions.   First the pink on the schematic is that for the Oscilloscope probes.
Second does the 1 microfarad capacitor have a faster discharge time over the 2.2  microfarad cap and hence affecting the timing.

You might want to coat all your components in epoxy to protect them from moisture and oil.   

Could you go to a larger working voltage on the capacitor to prevent it from getting to hot when making long cuts.

Also did you wind the pulser coil your self.   

How high in the RPM's will this circuit be good for.    Like say up to 14,000 or more.   

Some great info and is good to know you can always come up with an ignition for an old saw.   
PP 505, 475, 445.

Offline 3000 FPS

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 3933
  • Karma: 214
  • Location: Carpenter, Wyoming
Re: A simple CDI unit for Partner
« Reply #8 on: May 04, 2016, 11:14:04 am »
I do not know of any schematics for ignitions that have limiting coils.    Besides those coils are all incased with epoxy and I doubt that you could get into one to modify it in any way. 

If you could get into one of the newer limiting coils and since these ignition systems are solid state devices there is probably a component in there that could be changed so that the RPM range could be made to go higher.   
PP 505, 475, 445.

Offline 3000 FPS

  • Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 3933
  • Karma: 214
  • Location: Carpenter, Wyoming
Re: A simple CDI unit for Partner
« Reply #9 on: May 04, 2016, 11:21:26 am »
I also noticed that in your first schematic at the end of your video you use a SCR to discharge the capacitor into the ignition coil.
On your second schematic you use two transistors to discharge the capacitor into the ignition coil.

Just two different ways to do the same thing or is there a reason that one is preferred over the other due to reliability or something else.

Also the first one looks to be much more simple in design than the second one.
PP 505, 475, 445.

 

Related Topics

  Subject / Started by Replies Last post
45 Replies
3206 Views
Last post September 22, 2015, 06:37:09 pm
by The Ripper
partner 500

Started by man of stihl « 1 2 » Partner

18 Replies
975 Views
Last post July 06, 2015, 05:35:27 pm
by aclarke
Partner S65

Started by CASE5854x4 « 1 2 3 » Partner

24 Replies
1705 Views
Last post April 30, 2017, 03:57:32 pm
by Cut4fun .
1 Replies
675 Views
Last post July 08, 2015, 02:43:49 pm
by Cut4fun .
8 Replies
1210 Views
Last post April 27, 2012, 10:48:06 am
by SawTroll
0 Replies
711 Views
Last post April 13, 2012, 01:45:51 pm
by man of stihl
14 Replies
937 Views
Last post November 15, 2012, 06:33:24 pm
by sharkey
7 Replies
600 Views
Last post June 09, 2013, 08:34:40 am
by HMLT360Pro
0 Replies
98 Views
Last post September 26, 2013, 10:14:34 am
by KilliansRedLeo
10 Replies
1146 Views
Last post February 11, 2014, 12:46:47 pm
by Cut4fun .