Ignition (and other) questions
Posted: Mon May 17, 2021 9:17 pm
Just had the engine rebuilt for my 1960 R69. Was thinking I would get a nicely running bike back but I guess there was a communication breakdown between myself and the builder. Now it’s up to me to make it so.
I’m assuming the engine is fine so it must be Carburetors and Ignition that are the current problems. When I got it back it would not idle. Fixed that: cleaned idle jets. Runs rough and will not build RPMs. Somewhat have fixed that: cleaned Air Regulating Screw.
Moving on to Ignition. The Retard/Advance gag has been removed by me with a Vech kit (if memory serves...ten years-no miles ago). After the bike came back from the rebuilder, the first thing I checked upon discovering a very poorly running bike was the ignition. After reading Vech, SNAFU and Ausherman I checked the “S-mark” on the flywheel and the “V notch with the line” on the Brass plate. When the line is centered in the V, the S-mark is just out of the viewing window when viewed straight on. It is just above the viewing circle.
Is that to advance or retard the ignition (and done on purpose)?..........or is that just Wrong ?
The builder is a very experienced BMW mechanic.
I know what you’re thinkin’....why don’t you just call him ??? Life is full of changes and he has moved on to a new life, far, far away.
The plan is to make it run better, if possible, as is. I’ll swap out the points/condenser. Then go through the Carburetors. Don’t really want to swap to 12V/electronic ignition as I’ve just bought a new 6V battery and box but if that’s what will fix it then that’s what will be done.
Thoughts from people in the know please. Thanks. Brad Moore.
I’m assuming the engine is fine so it must be Carburetors and Ignition that are the current problems. When I got it back it would not idle. Fixed that: cleaned idle jets. Runs rough and will not build RPMs. Somewhat have fixed that: cleaned Air Regulating Screw.
Moving on to Ignition. The Retard/Advance gag has been removed by me with a Vech kit (if memory serves...ten years-no miles ago). After the bike came back from the rebuilder, the first thing I checked upon discovering a very poorly running bike was the ignition. After reading Vech, SNAFU and Ausherman I checked the “S-mark” on the flywheel and the “V notch with the line” on the Brass plate. When the line is centered in the V, the S-mark is just out of the viewing window when viewed straight on. It is just above the viewing circle.
Is that to advance or retard the ignition (and done on purpose)?..........or is that just Wrong ?
The builder is a very experienced BMW mechanic.
I know what you’re thinkin’....why don’t you just call him ??? Life is full of changes and he has moved on to a new life, far, far away.
The plan is to make it run better, if possible, as is. I’ll swap out the points/condenser. Then go through the Carburetors. Don’t really want to swap to 12V/electronic ignition as I’ve just bought a new 6V battery and box but if that’s what will fix it then that’s what will be done.
Thoughts from people in the know please. Thanks. Brad Moore.