Dynastart
The flat springs available
from www.smallparts.com are a close
match to those used to hold the circular point cover on the Dynastart housing.
They are made from .032 spring steel and are 2 3/4" long. The only significant
deviation from original is an extra mounting hole. Part number is FS-08-01.
Harley-Davidson part number
30381-63 is an exact match for the SIBA brushes used in the Excelsior Dynastart
units. Current availability is unknown.
SIBA Dynastart brushes reportedly are available from both the German and UK Messerschmitt Clubs. The UK price is about US$26 plus shipping and the German price a bit less. You need to be a club member to buy, but it shouldn't be too hard to find a member willing to help out.
(This section is new as of 20 September 2006. The scraps of information above were moved here mainly to stake out the site real estate - I'll add more shortly.)