Brooking 850
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- Oct 3, 2011
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Helping a friend with a 1951 Dominator 7 500 twin.
Mag totally rebuilt great spark.
The owner has an old paper style manual which indicates to time off the RHS with mechanical marks all aligned.
Double checked mechanical marks and they are good with 6 x plates between the cam sprocket and the intermediate sprocket with intermediate gear and crank pinion aligned as per factory specs.
That manual indicates the points should be in the 9 o'clock postion just about to open.
I have another hard cover book which indicates to time off the LHS (this is what Im used to having had older 500's in the past) and that puts the points at the 3 oclock position when comparing with the first manual.
I used the LHS retimed the mag points and it fired although never ran.
Rear HT lead to LHS plug.
I checked the plugs , great spark although looked very short in the threads.
Replaced with some B7ES to get the spark further down the hole, still no luck.
Forum thoughts please
Regards Mike
Mag totally rebuilt great spark.
The owner has an old paper style manual which indicates to time off the RHS with mechanical marks all aligned.
Double checked mechanical marks and they are good with 6 x plates between the cam sprocket and the intermediate sprocket with intermediate gear and crank pinion aligned as per factory specs.
That manual indicates the points should be in the 9 o'clock postion just about to open.
I have another hard cover book which indicates to time off the LHS (this is what Im used to having had older 500's in the past) and that puts the points at the 3 oclock position when comparing with the first manual.
I used the LHS retimed the mag points and it fired although never ran.
Rear HT lead to LHS plug.
I checked the plugs , great spark although looked very short in the threads.
Replaced with some B7ES to get the spark further down the hole, still no luck.
Forum thoughts please
Regards Mike