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VK3EUB > TECHNI 07.08.03 04:58l 74 Lines 2925 Bytes #999 (0) @ WW
BID : 9_VK3EUB
Read: GUEST OE7FMI
Subj: Re: Motorcycle electronic ignition
Path: DB0ZKA<DB0GPP<DB0ULM<DB0GAP<DB0BOX<DB0MRW<OK0PKL<OK0PPL<DB0RES<ON0AR<
WB0TAX<W4DPH<W4JAX<VK4TUB<VK3TE<VK3SPB<VK3FRC
Sent: 030807/0237Z @:VK3FRC.#MEL.VIC.AUS.OC #:64620 [Famparc] FBB7.00i $:9_VK3E
From: VK3EUB@VK3FRC.#MEL.VIC.AUS.OC
To : TECHNI@WW
VK3EUB/TPK 1.83e Msg #:9 Date:07-08-2003 Time:12:34 (-10 for UTC)
From :VK3EUB.#MEL.VIC.ASROCU
To : TECHNI@WW
Hi
Silicon Chip Mag did publish a Programmable Electronic Ignition
Module in March 1996 and an update in June and July 1999 .
Main features
User Programmable. Two stages of advance.
Second stage advance can be positive or negative.
Keypad data entry. Security code (2 digits).
Can store 2 sets of data (eg petrol , lpg).
Tachometer drive output. Points or other sensors.
Automatic coil cut off if motor not running.
7 segment indicator for initial timing setup.
Preset RPM limiting
There where 9 perameters that could be set .
The RPM at which ignition advance begins.
Mid stage RPM. Mid stage advance.
RPM limit. Rev limit advance.
Dwell angle. Vacuum advance.
Number of cylinders. A 2-digit security code.
The kit used a PIC16F84s ,i don't have the internet so i can not
check there web site www.siliconchip.com.au to see if there is any
info on the project. There was an internet address at the time
http://www.picnpoke.com which had basic info and an email address.
Jaycar still has the kit for sale item number KC-5202
www.jaycar.com.au . I think this project at the time worked only
with engines with even number of sylinders.
Brian
>VK3ABK Opined with considerable skill:-
>> I have been looking at copies of 'Silicon Chip' (do you see this in Europe)
>> as I had an idea an ignition system for motorcycles had been printed.
>
>A simple electronic ignition system using the existing coil and
>mechanical advance system is fairly trivial project and could be bought
>cheaply, however.....
>
>A full blown completely electronic ignition system is not. It requires a
>crank shaft trigger and at the very least a vacuum input transducer. You
>then need a microprocessor able to look up in an EPROM the correct
>instant to fire the mixture based upon engine speed, vacuum level and
>anticipted rotational position of the crank. The data for the look-up
>table EPROM is the really tricky part.
>
>
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