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Jaguar CDI

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Jaguar CDI

Post by Fabian on Fri Jul 27 2012, 02:44




There seems to be a great deal of interest as to what's inside the Jaguar CDI.

The original Jaguar CDI had 2 jumpers on the circuit board.
The Jaguar CDI on my bike is the 2nd generation which has 3 jumpers.
This new version has 4 jumpers and although it's a bit confusing, the jumper variables are explained on the Jaguar web page:

http://www.dragonfly75.com/motorbike/JNM/4curves.htm

The written text on the last photo needs clarification as the image compression software has made it difficult to read.
Text in the middle of the circuit board reads as "Red Wire" and "Green wire".
Text to the middle left of circuit board reads as "Dark Green Wire"

My goal (with some helpful advise) is to make an improved version of this CDI with a baseline 2-stroke ignition curve that can be altered using either a digital input or externally adjustable trim pots (idle, low rpm, mid rpm, high rpm) and outputting the signal to a digital display to easily see the selected ignition curve; all built into a weatherproof unit.

That said, the Jaguar CDI in it's current form is an excellent and reliable product.
I would be happy to pay double the price If Jaguar made a CDI with the above mentioned features!































The following images and text are reproduced from Jaguar's site, just in case the website has technical problems and can't be accessed.








Selectable Timing Curves
There are four electrical jumpers on the circuit board. Jumper "A" controls the whole ignition timing curve, with three individual timing curve options. Jumper "B" controls the amount of ignition retard above 3,000 rpm without changing the low rpm timing.

Below you can see the graph for the A jumpers and the three resultant timing curves resulting from where the jumper is or isn't placed.









Here you can see the graph for the B jumper and the three timing curves.








Last edited by Fabian on Tue Jan 01 2013, 02:49; edited 1 time in total

Fabian
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Re: Jaguar CDI

Post by FrictionNut28 on Sat Aug 18 2012, 17:12

Motorized biking can be alot simpler and reliable! Its called friction

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Re: Jaguar CDI

Post by Fabian on Sun Aug 19 2012, 01:23

Please stop being a troll - there are other sites more suited to your ambitions for such behaviour.

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