KenHupp20 Posted March 31, 2009 Share Posted March 31, 2009 I just noticed this post in Buy/For Sale : For sale A Boush DU4 on ebay. Fits a 4 cylinder for a late 1900's to the early 1920's. lookup item 190297777400 It is the correct for a Hupp MOdel 20 Link to comment Share on other sites More sharing options...
1910Hupp Posted April 1, 2009 Share Posted April 1, 2009 The Bosch DU4 is the correct mag for the model 20 But this one has variable ignition where the original had fixed ignition. No big deal you just fix it where you want or alternative you can rig up a non original advance and retard mechanism.You need to be very careful as the model 20 had an anticlockwise or left hand rotation (when viewed from the drive end) The more common clockwise rotation magneto is of no use without extensive/expensive modification-Karl Link to comment Share on other sites More sharing options...
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