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Bonzo · Wednesday at 11:18 AM

snowdr said:
When I contacted Alton recently about the dowels sheering after some years of faultless operation, they sent the attached information sheet.

Great info, thanks for posting

Bonzo · Wednesday at 11:29 AM

The inserts/dowels in this info sheet look the same colour as the six spares I have (on the right in post #13 and so I'll remove the three orange coloured ones I have installed and use the six newer ones.

Pity Alton couldn't have sent me this information, but there you go.

DennisMo · Wednesday at 4:43 PM

Looking at the chart below, if you set you maximum advance at 28 degrees BTDC, your ignition timing is about 4 degrees ATDC when rpm is less than 500rpm. That should stop kickbacks.
Dennis

baz · Thursday at 1:42 AM

DennisMo said:
Looking at the chart below, if you set you maximum advance at 28 degrees BTDC, your ignition timing is about 4 degrees ATDC when rpm is less than 500rpm. That should stop kickbacks.
Dennis
View attachment 123644

This assumes a non sticking AAU unit and a full 12v supply to electronic ignition with regards to kicking back

kommando · Thursday at 1:46 AM

DennisMo said:
That should stop kickbacks.

Not for the Boyer MK3, when that is sent a low V it advances the timing, so use an electric start with a high current draw and you are guaranteed a low V and an advanced spark.

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