@@ -26,29 +26,35 @@
I am the anonymous editor who added the above comment.
-I know little about this site and/or how to log in and/or enter a password
.
I tried but, to no avail
.
+I am Alan P
. DuBois and
I own and work with Hammonds
.
-I am Alan P
. DuBois and I work with Hammonds. freshairband@limo.net
+I am editing this post to reflect my latest discoveries regarding L & M100 manual chassis that will accomodate 10 busbars
.
-To add further to my above comment:
+The L133 manual chassis I originally spoke of is of different design than any other Hammond chassis I have seen.
+The actuators, contact boards and terminal strip are ALL made of plastic. Hammond chassis usually have bakelite boards, etc., - interesting....
-I have worked with many M100-series manual chassis.
-*
M100*
chassis I have worked with will accomodate 10 busbar contacts.
+NONE of the M100 chassis I have worked with will accomodate 10 busbar contacts.
+That is, _until recently!_
-I have also worked with many L100 manual chassis
.
-The ONLY L100 manual
chassis I have found that will accept 10 drawbar contacts is
the L133.
+I opened both an M103 and an L111 recently and they _both_
have room for a tenth busbar _and_ room for contacts for the tenth busbar, if installed
. These
chassis are the same as
the L133 I described above. All plastic guts
.
-This particular L133 manual chassis
I speak of is of different design than any other Hammond chassis
I have seen
.
-The actuators
, contact boards and terminal strip
are ALL made of plastic - Hammond chassis usually have bakelite boards, etc., - interesting...
.
+I checked my history working with these spinets and found that 1964 and earlier L & M100s used the bakelite boards and would not accomodate 10 busbars.
I have _not_ been into a 1965 vintage spinet
. And
, the last two models I opened up
are 1966 vintage
.
-I
added foldback to this particular chassis and I sold it - so I cannot give any more particulars about
this "unique
" chassis. I do have a photo of the backside of this L133 chassis but I have no idea how to post it here.
+So, it was obviously a production change in 1966 (for sure) and possibly 1965, where Hammond
added this "feature.
"
-I can only agree with
the original post in that
the ACTUATORS for M
, L100s DO
have 10 slots
.
-BUT, regarding adding
a tenth contact, not all the L, and
/or M100 chassis have slots for
10 contacts!
+To find out if your L or M100 has such a chassis, from frontside, remove
the metal L-shaped cover from
the lower manual chassis assembly (two screws at each end). If the terminal contacts are mounted to a black, plastic board (as shown below)
, chances are you
have one of these
10-busbar chassis
.
+
+[http://comics.limo.net/L111CHASSIS/BOTTOM.JPG]
+
+Note the "square" busbars used in this chassis
+[http://comics.limo.net/L111CHASSIS/END1.JPG]
+
+I added
a tenth busbar as shown in this photo.
+[http://comics.limo.net/L111CHASSIS
/10_BARS.JPG]
-All I can say is, beware of buying an M-, or L-100 with hopes of adding a 10th set of contacts and/or a 10th busbar.
-You should find out what's inside the chassis before you buy!
+
+ ''Great write-up Alan! Thank you for contributing to the wiki.'' -- JeffDairiki
