Restoring a Hamond M-102

  • Thread starter Thread starter stevieb
  • Start date Start date
S

stevieb

Just another guy, really.
Picked it up about a month ago, for $40 (about 4 years ago, I could have had the same basic organ, for free, but didn't really have a place to put it at the time.) Everything worked, although when I got it home, the bearings on the motor had developed a considerable noise, so I may need to replace them.

Tested the tubes on the way home by dropping by Northwest Speaker in Marietta, Ron has a tube tester and he lets anyone test their tubes- even will assist you if you are not sure how to do it.

Originally, I was just going to do a "blow out," removing various assemblies enough to vacuum or blow out the dust and cob webs, etc., but one thing led to another, and now the entire guts of the thing are out of it (except the wiring from one sub-assembly to another are, in most cases, soldered together, so the pedals are still in, but just barely) and I am almost finished removing the old, soft finish from the cabinet. Here's a tip: lacquer thinner works as well as Min-Wax Finish remover, and cost one-fourth as much. I also learned you can remove much of the thinner-and-finish with a flat-blade putty knife, faster and easier than with steel wool, but you must complete the finish removal with steel wool and thinner. I have not decided how I will re-finish it- boiled linseed oil ("BLO") looks very good on one of the legs, but BLO may have some drawbacks.

I probably won't do much to the actual "organ" part, except re-solder the two or three wires that have pulled off while I was moving it around and replace the two brass leaf springs that broke on two of the keys. The organ works, I hope I can get by with just replacing the noisy motor bearings and filling the tonewheel reservoirs with Hammond Organ Oil- a google search did not result in a single, definitive post saying what is a good substitute, so I had to pay drive into Atlanta and pay $15 for 10 ounces of honest-to-gosh Hammond Organ Oil. The google search revealed plenty of dire warnings to NOT use 3-in-1 oil, etc.

But here's the cool part- the organ is a spinet, designed to be pushed up against a wall of someone's living room. Thus, it's got 2 12" speakers, firing towards the organist and the room. I've got a 100-watt Carvin, 2-rack space power amp, and I might mount it, in addition to the original amp, and drive an additional 2 speakers, perhaps 15's or 12's. This would mean there would be two speakers firing towards the organist, and two out to the room, assuming the organ was not backed up to a wall. That out-in-the-room configuration is likely, as this organ is headed to our rehearsal/recording business in New Orleans.
 
Very cool sir. You're gonna love it. I got a free L-103 that was siezed up. Got it loose with WD40 and then a LOT of Hammond oil. The L and the M are both spinits but the M is closer to a B-3 I think. You HAVE to find yourself a Leslie to go with it.
 
Oops, it's an L-102, not an M. the L's are supposed to be less desirable, but I don't care- I like the tone of this one, and personally feel the vibrato and chorus are just fine, and I detest the "click" sound that some are so fond of.

I forgot to mention I intend to replace all the caps- these are over 40 years old, and the volume output of this organ is not what I would expect from a 2X EL84 amp- all the tubes test out fine, someone (Ron, I think, no- it was a tech in his shop) suggested replacing the pots might increase the volume.

I am going to try to build a Leslie from a home-built gig rack I have. The GR is a sad sack- nobody wants to pay even $40 for it- there is at least $50 worth of hardware on it- and I don't need it. It's size, design and construction is such that I think it will work very well as a cab for a Leslie, and I am looking forward to building it into one. It's sound will probably never live up to the purists' standards, but who cares? It will never be a pretty piece of furniture, but if I get it to the point of being a passable, functional Leslie, I will be pleased.

I just remembered I edited a patch for my old Digitech RP-7 guitar multi-effects pedal that simulated some of the coolness of a Hammond/Leslie set up- when you first play a note or chord, there is some of the swell of a Hammond (but only on the very first note/chord,) and the rotary speaker effect is there, too- I will probably put it between the hammond's pre-amp and the Carvin power amp and see how it works.
 
Thanks. The pics of Leslies with the backs removed will be of particular use when I build my "Leslie."
 
Very cool! We'd all love to see some pics of your work! Use the "Go Advanced" button at the bottom of these pages, and click the attachments button to upload pics, if you can!
 
Bummer. The Captain Foldback site used to have a few mods just for the L series that seem to be gone.
 
Pics will be coming, once I am finished, or nearly so. Pics now would just be a waste of time, and I never seem to have time to stop what I am doing and take "progress" pics. I'd rather keep working and get it finished.
 
Mostly finished with the tung oil- 6 or 7 coats done. Attached the base-board to the ends to cover the uglies caused by a little water making the MDF come apart at the bottom, it looks very good, almost not noticeable. Put the pedals, reverb tank and expression pedal back in, took all the keys off and washed them- some of the brass leaf-springs broke (see my post in the Hammonds for sale forum, or whatever it is called) and one of the screw tubes broke on one of the keys- what's the best glue?

Gave myself a scare when I tried to remove the top metal that is directly below the keys- a metal strip that is threaded slid out and I not only thought I would NEVER get it back in, I also had to feel around where the single-strand copper wires are, to feel for the metal strip to emerge. Scared half s**tless I would break one of those copper wires, and then where would I be? (I have no idea, but I'll bet it isn't good.)

The cab is looking more and more beautiful. Hopeful it plays as good, when I am finished. (it played fine before I started...)
 
It's really cool that you're doing that. I have an L103 (I think.) The only difference from what I can tell between the 100,101,102,103,104 were different body designs. The insides are all the same.

I don't know enough about them to try to fully resore it. But it plays and sounds pretty good. I just don't think it sounds as good as it could.

Good luck.
 
Back
Top