[HAM] Hammond B2 smooth Drawbars using M3 parts

[Jordan Kersten]

I'm currently working on a project to convert my B2 to non-ratcheting, smooth drawbars.  With the $400 for an entire 3-series set out of the question, I am planning on using parts from an M3.  I know this: the ratchet assemblies use a single, pointed contact on the drawbar spring.  The spacer that the drawbar spring contact slides against is notched with the busbars lying in the notches.  Every two drawbars share one of these "spacers."  I know that the B3's, C3's and the M3 organs use a drawbar spring with 2 contacts with a 1-ohm resistance wire between them.  My question is, in the 3 series drawbars, what does the double contact slide against? Do the M3 assemblies have the same smooth "spacers" that the B3 and C3 assemblies do?  If not, can I use the notched spacers of the B2 and flip them over to use the smooth side (using the smooth contact spring)?

My plan is to use three complete assemblies from an M3.  I will replace all the spring contacts in the B2 with the M3 smooth ones.  I have never seen the inside of an M3 assembly so I only assume it has the same spacers (the plastic piece the drawbar spring contact slides against) that the B3's and C3's use.  Is this correct?


-Jordan-

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