Electronic Ignition Analogue or Digital

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Hi all I am about to show my ignorance here, as stated in a previous thread I am having ignition problems with my 20M3 Fastback, if I have to replace the Ignition what are the advantages of going for a Digital Ignition over analogue in this application, as it is kick start only I guess it won't be as voltage sensitive but what other advantages?
 
You are in New Zealand and so are Pazon.

Sure Fire or Altair.
The ignition is only as good as the power source that feeds it.

 
the digital should have an idle stabilization feature where as the analog will not so the digital should have a more consistent idle.
 
Hi Alan, I have been running a Pazon for about 6 years with no trouble. I rode it for the first time in 2 months last week and it stared first kick. Its never let me down. I dont think its got idle stabilization but who the hell needs it. These bikes are meant to be ridden.

Dereck
 
Nothing wrong with either, until you have electrical problems, some faults can be attributed to the bike, with old wiring, etc , some to to the sometimes cheapo components fitted by the manufacturers in the ingition system.
 
Analogue ignition works perfectly well for road use Pazon surfire analogue VS altair digital

the only thing you will note going down the road is the thickness of your wallet is reduced with Altair
 
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Pazon works clockwise or anti-clockwise! Use different timing alignment holes and scales.

I wondered if all the 20M3 engines had the tachometer drive on the timing cover (and the ignition unit behind the engine (with the same AAU as later bikes perhaps ?)

Having linked to the Pazon Sure - Fire and Altair (and it not directly 'bolting into a 20M3 is all)

Maybe that is what your reply says, they will fit (without extra parts)

Edit.
Googling pictures show the 1969 (which I think the OP has) with a points in the cover ignition so maybe it was nothing to worry about.
 
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I wondered if all the 20M3 engines had the tachometer drive on the timing cover (and the ignition unit behind the engine (with the same AAU as later bikes perhaps ?)

Having linked to the Pazon Sure - Fire and Altair (and it not directing 'bolting into a 20M3 is all.

Maybe that is what your reply says, they will fit (without extra parts)

Boyer and Pazon fit 20M3 and 20M3S (and later).

 
Thanks everybody, My Feb 69 Fastback has the points housing at the back of the engine where the magneto was, anyway it looks like i have found my ignition problem so as long as it continues to go I guess i will stick with the Mk3 Boyer. As I am currently building a Mk3 850 which I have purchased an Altair for it will be interesting to see the difference. Back in the 70's I had both a 71 750 and a Mk2 850 both on points until I put a Boyer on the 850 at which time I feel the acceleration got lazy, and I feel the same way about the fastback, with the 750 [ex police bike] I could crack the throttle and pick up the front wheel [no clutch needed] I guess I was young and slimmer in those days!
 
Thanks everybody, My Feb 69 Fastback has the points housing at the back of the engine where the magneto was, anyway it looks like i have found my ignition problem so as long as it continues to go I guess i will stick with the Mk3 Boyer. As I am currently building a Mk3 850 which I have purchased an Altair for it will be interesting to see the difference. Back in the 70's I had both a 71 750 and a Mk2 850 both on points until I put a Boyer on the 850 at which time I feel the acceleration got lazy, and I feel the same way about the fastback, with the 750 [ex police bike] I could crack the throttle and pick up the front wheel [no clutch needed] I guess I was young and slimmer in those days!
I'm guessing points ignition with a good working aar unit would give a bit more power lower down in the revs as it advances more quickly ? the Boyer isn't on full advance until 5000 rpm ?
 
I'm guessing points ignition with a good working aar unit would give a bit more power lower down in the revs as it advances more quickly ? the Boyer isn't on full advance until 5000 rpm ?
Whereas I would be inclined to think that the EI fitted was never set correctly!

Why? Well because hundreds of racers, would not have put up with an ignition that reduced performance!

Remember that it should be set to 31 degrees, not 28 degrees so carries on advancing when the AAR has stopped.

Today we would confirm the timing marks are correct, back then, probably not many did!
 
After having experienced the effects of digital idle stabilization, I wouldn't revert to an analog ignition again. JMHO.
 
Whereas I would be inclined to think that the EI fitted was never set correctly!

Why? Well because hundreds of racers, would not have put up with an ignition that reduced performance!


I think the Boyer was originally produced so that racers could have the same timing at the end of a race that they had at the start.
 
This fellow is getting on now but was a great racer and race tuner. He certainly knew how to set points!
So much so that he was reluctant to switch to EI when Boyer ignition first appeared. His sidecar monkey convinced him to give it a try on his Trident side mcar racebike.
Dave told me that with the switch to Boyer from points, the bike gained 500 rpm on the Westwood straightaway.
He was already winning most races but with the Boyer fitted he won everything.
And that was with what we now think of as old, bad, analogue Boyer!

 
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