Timing--SA vs Cub

Farmall Super A, AV, 100, 130, & 140 1939 - 1973

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Dan England
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Timing--SA vs Cub

Postby Dan England » Wed Sep 28, 2005 7:36 am

I believe that on a properly timed Cub the rotor should point to 1 o'clock position when piston #1 is at tdc on the compression stroke. If this statement is true, would that also be true for a SA? Both have mags. Thanks, Dan

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Postby John *.?-!.* cub owner » Wed Sep 28, 2005 8:22 am

Don't know about a Super A, but on a cub magneto the rotor will actually be about 11:30 or so position until it "snaps" then will go to aobut the 1 oclock position. It won't stop dead on the nujber one position, which is about 12 to 12:30 position. look for the 1 with a circle around it on the cap of the SA mag. roto shoud be just before it until impules "snaps" then stop just after it.
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Dan England
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Postby Dan England » Wed Sep 28, 2005 2:32 pm

Thanks, John. Dan


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