Problem with my Mark III diagnosed!

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nortonmargie

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After trying everything I could think of and several suggestions from Forum members, I gave up and got the bike to the local Norton mechanic (we have a local Norton mechanic) who pulled the Pazon ignition out and sent it to JRC Engineering, the US distributor for testing. Result: it fails at speed. Pazons have a seven year warranty, so I am getting a new one free. Happiness! Thank you to all who listened and tried to help
 
When I bought Pazon ignition for the Vincent it came with a 7 and one half year warranty. I recall thinking what an odd length of time this was- why not 8 years or seven years? What exactly happens after seven and one half years? It seems that warranties are slightly reduced to seven years now.

Either way it is a very generous warranty and my experience with Andy at Pazon was excellent.
I'm glad to hear that he is still running a good shop there and your problem will be solved.

Glen
 
worntorn said:
When I bought Pazon ignition for the Vincent it came with a 7 and one half year warranty. I recall thinking what an odd length of time this was- why not 8 years or seven years? What exactly happens after seven and one half years? It seems that warranties are slightly reduced to seven years now.

Either way it is a very generous warranty and my experience with Andy at Pazon was excellent.
I'm glad to hear that he is still running a good shop there and your problem will be solved.

Glen
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It would be an ATTENTION GETTER!!!🗣️

Like some industrial sites have a 12mph speed limit, sticks in your mind💡
 
nortonmargie said:
I think it is still a 7 and one half year warranty. Check the website
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I did. The links say 7 1/2 . When you get to the actual page the 7 is still there but the 1/2 is replaced with a ?

Problem with my Mark III diagnosed!
 
However when I go to their latest warranty page it is spelled out that the warranty is now seven years.
Still a great product but a minor snip on the long warranty for some peculiar reason.

Pazon Ignitions Ltd. warrants to the original purchaser that the Pazon Ignition System be free from defects in workmanship & parts under normal use for a period of 7 years from date of purchase
 
I fitted a pazon system on my mk3 as I read that it would spark at a lower voltage than the fitted boyer while using the electric start . Seemed a good idea. No spark ! Didn't seem as if the pickup pins on the rotor were in far enough to reach the coils on the stator plate. Was informed by pazon they had to produce a rotor with longer pins to address this problem. Not free ? Slight improvement but according to the measurements requd still 3 to4 mm short ! Got back in touch and was told to make a spacer to bring the rotor out farther. Tapered fit !! Had to make up carefully made shims using a variety of bits of an old set of feeler gauges so I could get it right . Works now but not impressed to say the least !! Roy.
 
The yaki said:
I fitted a pazon system on my mk3 as I read that it would spark at a lower voltage than the fitted boyer while using the electric start . Seemed a good idea. No spark ! Didn't seem as if the pickup pins on the rotor were in far enough to reach the coils on the stator plate. Was informed by pazon they had to produce a rotor with longer pins to address this problem. Not free ? Slight improvement but according to the measurements requd still 3 to4 mm short ! Got back in touch and was told to make a spacer to bring the rotor out farther. Tapered fit !! Had to make up carefully made shims using a variety of bits of an old set of feeler gauges so I could get it right . Works now but not impressed to say the least !! Roy.
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What was wrong with the Boyer ?
 
mean gene said:
So Pazon makes a one size fits all?!?!? Commando's should all be the same, or am I confused?
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It isn't only Pazon that recommends shimming the rotor, Boyer does too...
"On British machines, if necessary the rotor can be moved out slightly by placing a thin metal shim around the taper."

Tri-Spark instructions also say the rotor position should be checked...
"Step 5 - continued
Once the rotor has been fitted check that the face of the rotor is back from the ledge that the stator unit sits on by two millimetres using a straight edge as shown in the following photograph. (2mm +/- 0.6)"

...therefore, the problem seems to be with individual machines and not the ignition system, however, shimmed and still "3 to 4mm short" seems excessive.
The Pazon Sure-Fire rotor fitted to my 850 Mk3 didn't need shimming.
 
nortonmargie said:
After trying everything I could think of and several suggestions from Forum members, I gave up and got the bike to the local Norton mechanic (we have a local Norton mechanic) who pulled the Pazon ignition out and sent it to JRC Engineering, the US distributor for testing. Result: it fails at speed. Pazons have a seven year warranty, so I am getting a new one free. Happiness! Thank you to all who listened and tried to help
Click to expand...
Do you know which part failed, box or trigger plate?

Which type of Pazon?
 
The yaki said:
I fitted a pazon system on my mk3 as I read that it would spark at a lower voltage than the fitted boyer while using the electric start . Seemed a good idea. No spark ! Didn't seem as if the pickup pins on the rotor were in far enough to reach the coils on the stator plate. Was informed by pazon they had to produce a rotor with longer pins to address this problem. Not free ? Slight improvement but according to the measurements requd still 3 to4 mm short ! Got back in touch and was told to make a spacer to bring the rotor out farther. Tapered fit !! Had to make up carefully made shims using a variety of bits of an old set of feeler gauges so I could get it right . Works now but not impressed to say the least !! Roy.
Click to expand...
Does Boyer make a range or rotors?
 
L.A.B. said:
.........

...therefore, the problem seems to be with individual machines and not the ignition system, however, shimmed and still "3 to 4mm short" seems excessive.
The Pazon Sure-Fire rotor fitted to my 850 Mk3 didn't need shimming.
Click to expand...

Problem is possibly with individual camshafts?

My first question would be what cam is this?
 
There are several types of camshaft bushings. Only the MK3-style (06.5428) has an actual thrust surface against the inside of the camshaft sprocket. The others only have the thin wall of the bushing protruding through the crankcase. I've seen those worn flush with the crankcase. Generally, the camshaft can only move so far towards the timing side but can move towards the drive side significantly depending on the bushing and bushing wear. This really didn't matter with points but can with electronic ignitions.

I don't know much about Boyer or Pazon, but Tri-Spark has rotors available to resolve this issue. Fortunately, I've only ever heard about it - it has never happened to me with Tri-Spark but then if the bushing is worn, I replace with the MK3-style. Of course, that requires splitting the cases.
 
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