Phonoland

Rob,
I heard a different "story" as to why WurliTzer changed the end of record switch. The story I heard was from my then "boss", who had been a long time WurliTzer factory employee.
We got in a WurliTzer for repair, or on trade, which had a defective cancel switch. He informed me that that switch had been superseded, by another style/brand, due to the increase in cost of the original unit. I recall him bringing in a new style, complete with a new mounting set-up to retrofit the new switch to the older phono. ( He had purchased most of the "obsolete" WurliTzer stock from their factory owned/operated distributor, when they closed) I recall him telling me that WurliTzer had quit supplying the old style switch, and that if ordered, the new style switch, and mounting bracket, were supplied for that part number. Ron Rich

It was the motor and particularly the gear shaft/beltwheel that was causing the rumble.
I opend the motor cleaned it and added one shim and greased inside, adjusted everything for minimum backlash.
Most important fix: Added one rubber o-ring between the beltwheel and bracket side, this removed most of the rumble as the beltwheel rubbed the bracket.

There was also hum from the amp.
I switched the tubes place from one channel to the other and found one 6973 causing most of the hum.
So I replaced the bad tube, as I have a few replacement tubes.

I wonder how long that added belt can last ?--I think I would have seen if I could adjust the gears so the pulley was "centered", so it did not rub ?? Also--gears look dry, should have a small amount of graphite grease, IMHO. Also I think the shaft ( oil hole should be filled), as well as ball bearing should be oiled, with 20 wt. oil. Ron Rich

Gunnar, that assembly looks a bit dirty and bone dry.

The alignment of motor worm and gear can reduce rumble -a bit, the problem is that a too-loose coupling causes wow and flutter as the belts age and and develop 'elbows". Wurlitzer added a snubber in the later models that somewhat addressed that issue, but longterm the flutter always comes back. One "solution" was to add a wave-washer between the flywheel and bearing to add a slight, consistent resistance to the rotation. I didn't like this approach and don't care to add additional friction. However, it does work though using the machine regularly (to prevent elbows) and replacing the belts every few years works as well.

Rob

Ron Rich wrote:Rob,
I heard a different "story" as to why WurliTzer changed the end of record switch. The story I heard was from my then "boss", who had been a long time WurliTzer factory employee.
We got in a WurliTzer for repair, or on trade, which had a defective cancel switch. He informed me that that switch had been superseded, by another style/brand, due to the increase in cost of the original unit. Ron Rich

Interesting, I had assumed that the newer design was implemented after they started using the 16T which had higher compliance. As it was, they never really set the keeper to avoid loading the inner playing grooves. I experimented with using a gentle set of leaf contacts and relay but given the crude bearings and massive arm it didn't seem to make enough difference. Even without switch loading, there was still a bit of cantilever wobble and 3-4 gm was "it".

Rob

Your observations are correct regarding the dry gears, this photo is 1 year old (just after I disassembled the box).
The photo was just for illustrating where I put the o-ring.
Everything is greased and the gears are also well centered.
There is a new beltwheel installed for 50Hz now.
This is how it looks today:

Hi Rob,
I once attempted to eliminate the mechanical switch with a magnetic type----did not spend a whole lot of time, once I realized that without the mechanical "drag" of a switch, the tone arm wanted to slide towards the record's center--also found that the tone arm audio wire on them IF, disturbed, acts like a spring. I have replaced that wire many times (hint--IMHO, audio wire MUST be affixed to the arm that it follows, as per factory), which has enabled me to adjust the trip off, successfully, "by the book"--- Ron Rich

Any commens on this pickups?
Both are out on Ebay/Tradera (nationale site here) now, it's a bargin right now, just a few bucks.
So I can definitely take a chance here!
Do theese old worn pickups normaly works fine after 30 years?
Any pros/cons regardig the two below?


Shure M44 C


Pickering V-15/AT-2

Yes--Pickering is out of business--has been for years now-- Shure is still operating--under recently changed ownership--and I believe still makes that cartridge-- Ron Rich

Gbak wrote:Any commens on this pickups?
Both are out on Ebay/Tradera (nationale site here) now, it's a bargin right now, just a few bucks.
So I can definitely take a chance here!
Do theese old worn pickups normaly works fine after 30 years?
Any pros/cons regardig the two below?


Shure M44 C


Pickering V-15/AT-2

The Pickering V15AT2 is the better choice with regards to mounting in that arm. The clearances are tight and the cart body is lighter than the Shure. While Pickering Co was sold repeatedly over the last 20+ years it is only recently that the current owner has discontinued it. Millions were made and copy styli should be available for decades to come.

I measured a Rowe branded Shure @ 630ohm/ch.

Magnetic pickups are generally longer lasting than ceramic and crystal, however they need to be checked for continuity of their coils. The one shown should be approx 560 ohm (DC) for each channel. Another potential problem is foreign matter getting into the hole and adhering to the pole pieces. Blowing or careful vacuuming may dislodge debris. I often wash the pickups and blow them dry. Once they are determined to be Ok, magnetics will work -probably forever.

From a very snowy Manhattan,

Rob

Hey Rob--
The snow's getting to ya !
Pickering was NEVER "sold" to anyone ! They stopped production and closed their New York operation at least, 20 years ago, as I waz told, "due to snow, and cold". They, and their inventory went to their "sister company (Stanton)" in sunny Florida (the same place they went most winters, for years !). Stanton sold off all Pickering production at "fire sale" rates at one time--Stanton has since been purchased by Gibson, who also happen to have purchased " Shure"-- I don't know how much Stanton will be produced, as I understand all production went to the Shure factory, a few months ago ?? Ron Rich

Hey Rob--
The snow's getting to ya !
Pickering was NEVER "sold" to anyone ! They stopped production and closed their New York operation at least, 20 years ago, as I waz told, "due to snow, and cold"

Ron, I do believe you are jealous...Can't say i blame you. Look at what you are missing:
http://s1192.photobucket.com/user/Rob-N ... rt=2&o=190

http://s1192.photobucket.com/user/Rob-N ... rt=2&o=191

http://s1192.photobucket.com/user/Rob-N ... rt=2&o=192

http://s1192.photobucket.com/user/Rob-N ... rt=2&o=193

http://s1192.photobucket.com/user/Rob-N ... rt=2&o=194

http://s1192.photobucket.com/user/Rob-N ... rt=2&o=195

http://s1192.photobucket.com/user/Rob-N ... rt=2&o=195

There are more shots and video, but you get the picture.
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I had a dealer's account with Pickering-Stanton from late 1986 till they moved sometime in the early 2000's. My last order was for 150 pair of Seeburg yellow styli in April 1999 and another 50 pair that June.

I've mentioned here that about 9 years ago I tried to get Stanton to make 1000 styli for $10,000 -a little over double what I had paid, but they said that the "molds were worn out", etc. At this point my longterm goal is to be rid of vinyl in the wallbox locations as soon as a reliable MP3 server is available.

Rob

Hi Rob,
I really did enjoy looking at those photo's ---FROM HERE!! -- The last time I spent anytime in "the Snow", was in 1963, when I was in the U.S.Army, in Germany--two rotten, miserable, cold, wet, weeks, "camping" in it, in a pup tent. I made up my mind then that "people" who "liked it" were crazy !! I later was "on assignment" for two weeks in the Italian Alps--there was snow up there, but, it was NOT falling while I was there--had a ball with the Italian Alpini--they taught me to ski ! That was OK, since I was able to go a hotel, any time I wanted to--
As for an account with Pickering--I had one starting in about 1972, --They were really nice people to deal with--
Ron Rich

Could this be a candidate for my tonearm?
Dont know any dimensions but it seems to be similar to Shure M44
https://www.thakker.eu/en/pickup/tonar- ... ge/a-5209/

Is there any dimension issues to concider, except for the weight?

Regards/
Gunnar

Maybe ?? All kinds of "considerations"--type of unit--output--physical, height/width--needle height (distance from top of tone arm)--
Ron Rich