Overhauling and modernizing a Splitdorf DU-5 generator

The Splitdorf DU-5 generator was common on US made motorcycles from 1920 to approx 1927 when it was replaced by the DU-7. Originally the DU-5 is a three brush generator where the third brush regulates the field. It is originally equipped with a mechanical cut out relay to prevent the battery from overcharging.
To improve the DU-5 fitted on my 1927 Henderson De-luxe I decided in rebuilding it with a modern style electronic regulator. This in addition to improving the charging make it a two brush generator where the field is controlled by the regulator.
Such a modern style regulator is availiable from; http://www.splitdorfreg.com/

Further knowledge on the Splitdorf generators and magnetos used on US made motorcycles; http://www.splitdorfreg.com/Blancard/index.htm





Generator all apart





New regualtor installed in Generator end cover






New magneto bearings from England. These bearings require the generetor or magneto endcover to be shimmed to get proper fit on bearings






Ready for installation after commutator is trued






Generator endcover with brusholders after mecanical cut out is removed






Using my thrusty ol Mayford to make replacement screws for all electrical connections










All done and ready for testing




Testing the charge current at approx 1400 Rpm

American Motorcycles

Harley Davidson, the thrusty sidecar puller.

American Motorcycles Norway

This bike, C465 have been posted before, viewed from the other side with two nice girls posing. At that time I was unsure of the make, but in this pic it is clear, its a Reading Standard sidevalve twin

American Motorcycles Norway

A couple more historical images,



This would be a typical early twenties motorcycle shop where they sell both Cars and Motor cycles. The bikes seems to be mostly Harleys. Some of the cars are sold without bodies. Those would be completed by your local bodyshop.



This is a very early Henderson, 1914-16. Looks like another shop.

American Motorcycles Norway

Here is two photos showing a Indian Power Plus with sidecar. Seems like it is owned by a navy officer or it might belong to the navy base?



Some impressive canons on each side of the gate.




Bike seems to be brand new, the paint is shining.
Dixie magneto and Prestolite acetylene lightning was standard on those bikes?

American Motorcycles Norway

A pair of pics from the Northern part of Norway, Svolvær!



Harley with sidecar, perfect for
tran- sporting the family to town. Bike is equipped with what seems to be homemade legshields. The gas headlamp is from an older car, check that size!




Again a small two stroke Cleveland. This is the later model as the first ones had a sylindricaly shaped fuel tank.
Clevelands sold really well in Norway.

American Motorcycles Norway

Some more American made motorcycles from the Norwegian motorcycle scene pre. WWII. All of these pictures are from my own region (K registration) wich was very influated by the American lifestyle in the early years of motorcycling. Everyone had a relative "over there" and this caused a lot of second hand imports.




This bike is a early 20`s Harley F model (magneto) 61" / 1000cc (5 cooling fins on the exhaust port).



This is a 26 or 27 Harley JD 74" / 1200cc (7 cooling fins on the exhaust port) electric model. Speedo is Corbin whilst most had John Manville.



I cant figure out what brand this is, else than it is a ca. 1910 to 1915 model.