Cat 30 Mag

might be a eismann not sure of the model
http://www.oldengine.org/members/diesel/Magnetos/MagData.htm

That might be correct on the snow cruiser/ snow special so the side curtain would not need to be opened to set the impulse.

From the picture angle it looks more like an IHC mag to me.

mabye this will help, I should have posted this in the begining

While not quite, but it looks a lot like the one on our big 20, Missing the cover on the shaft end.
Terry

The mag in the picture is not original to the CAT 30. Starting with Serial number S-10048 and PS-10702 CAT went to a smaller mag bracket, like the one shown in Steve's picture. CAT eliminated the hood assembly so that the Eisemann GV-4 mag was exposed. Sometime before that CAT had gone to the GV-4 mag with a hood cover, which had a large bracket to accomodate the cover. Before that (a carry over from Best) the Bosch ZR-4 with a hood was used. The replacement mag from CAT for the 30 was the Eisemann CM-4 and CT-4. Frank

Thanks Frank, That helps

I noticed the mount was smaller that my early 30 with the ZR4 and the Dog House