1948 Zephyr, points

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This topic contains 22 replies, has 7 voices, and was last updated by Avatar 7tcu 1 month, 2 weeks ago.

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    7tcu

    Replies: 16
    Topics: 5
    #176071

    I took off the flywheel and everything g looks good but I have not figured out what makes the points open up. I am used to seeing a cam come around and open them but I do not see anything that would open the points up so you can set the gap. What am I missing?

    Buccaneer
    Buccaneer
    US Member - 1 Year
    Replies: 3003
    Topics: 838
    #176073

    I have not opened up a Zephyr in years, but is the cam inside the flywheel?

    Prepare to be boarded!

    Avatar
    7tcu

    Replies: 16
    Topics: 5
    #176074

    It is coned shaped inside the flywheel that probably opens the points, but I don’t see any cam, it all looks concentric, but it could be I am just eye balling the fly wheel. So as the flywheel opens the points, how would you go about setting the gap.

    frankr
    frankr
    US Member - 1 Year
    Replies: 4244
    Topics: 43
    #176075

    Same here, too many years, too many tears But I’d be looking for a cam ground on the flywheel hub where it sticks down between the points. It was fairly common practice, but I can’t say for the zephyr.

    Avatar
    7tcu

    Replies: 16
    Topics: 5
    #176082

    Giving a good look, one side to the cone in the flywheel looks thicker than the other side and would open up the points. and as setting the points it looks like you just insert the points in its holder and clamp the down and they are set. this set of points fit in slot and then are clamped down. looks like it was engineered so you don’t have to set them.

    Mumbles
    Mumbles
    Canada Member - 2 Years
    Replies: 4104
    Topics: 420
    #176101

    The cam is ground into the crankshaft. Look closely and you can see it. The flat end of the points pushrod contacts the crank in this area.

    • This reply was modified 1 month, 3 weeks ago by Mumbles Mumbles.
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    7tcu

    Replies: 16
    Topics: 5
    #176117

    My Zephyr is a model 4404 and is different from the picture you sent, so the cam has to be in the flywheel. Too much distance from the shaft to the points for a cam on the shaft.

    • This reply was modified 1 month, 3 weeks ago by Mumbles Mumbles.
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    Mumbles
    Mumbles
    Canada Member - 2 Years
    Replies: 4104
    Topics: 420
    #176124

    If you roll those felt oiling wicks back you should see the pushrods which ride on the crank and open the points. If your points are not opening or can’t be adjusted, either the pushrods are missing or they are severely worn.

    If you loosen the clamp screw on the bottom of the mag plate, you will be able to lift the plate right off the motor. This will make it easier to see the pushrods and the corresponding notch in the crank.

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    7tcu

    Replies: 16
    Topics: 5
    #176130

    Yes, the end of the points are under the felt, and the cone in side the flywheel is what opens and closes the points. The cone looks concentric but is not. It is thicker on one side to open and close e the point.

    • This reply was modified 1 month, 2 weeks ago by Mumbles Mumbles.
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    Mumbles
    Mumbles
    Canada Member - 2 Years
    Replies: 4104
    Topics: 420
    #176145

    Ok, then please explain how you are going to set the points without an access hole in the flywheel for a feeler gauge?

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    garry-in-tampa
    Lifetime Member
    Replies: 3072
    Topics: 30
    #176148

    Mumbles is correct ! The breaker point pushrod rides on the crankshaft. (points should be set at 0.020″) The taper on the flywheel hub ends just above the felt oiler wicks . . .






    Avatar
    7tcu

    Replies: 16
    Topics: 5
    #176176

    Not the best picture but there is about 1/8″ clearance between the shaft and the end of the points and there is nothing on the shaft to contact the end of the points. After measuring the flywheel and where it fits the cone would fit in-between the points. With nothing on the shaft even coming close to the end of the points, what else but the flywheel could be opening the points?

    • This reply was modified 1 month, 2 weeks ago by Mumbles Mumbles.
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    Tubs
    Tubs
    US Member - 1 Year
    Replies: 2266
    Topics: 128
    #176178


    Take out he spark plugs and put on the flywheel nut.
    Turn the crankshaft to see if the points will open and close.

    Avatar
    7tcu

    Replies: 16
    Topics: 5
    #176182

    Good idea Tubs, you can turn the shaft all you want and the points don’t move. And by the way the flywheel nut is captured by the starting rope recoil apparatus and is used to tighten down the flywheel as well as it is a puller to remove the flywheel. They had good idea’s back then.

    Tubs
    Tubs
    US Member - 1 Year
    Replies: 2266
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    #176184

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