1937hd45

Hup 20 Magneto

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I've never inspected or tested a vintage magneto, is there a book or series of magazine articles to guide me? Is there a magneto wizard out there that you just mail it to along with a check? Thank you! Bob 

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Like all things to do with our cars people with the skill to fix the magneto are becoming a rare breed-However they are out there. 

If needed we can use my guy  but being based  12000 miles away makes this uneconomic for you. People who restore antique stationery engines or early aircraft normally have contacts who can do it for you . They aren't that difficult but a lot easier to work on with the correct tools . Fortunately the DU4 is pretty common  ( if not  in our anticlockwise rotation)  so info is out there if you want to have a go-Karl

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I know its a DU4 bosch mag but i love have a spare

Hot and ready

But witch du4 is it

CC or C and is du4 with adjustment ok (desired)?or not

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Its  a DU4  CCW (counter clockwise rotation -ie the rarer one) 

Originally had  fixed ignition -I have  variable advance and retard on mine but tend to leave it  alone as the gains from fiddling with it  are minimal in my experience 

Karl 

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