HELP: Seeking outside help to unfreeze mandrel on Edison Standard,

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bobkolba
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HELP: Seeking outside help to unfreeze mandrel on Edison Standard,

Post by bobkolba »

Those who know me will attest I'm a collector, not a fixer. I have read all about how to unfreeze a mandrel bearing on the Forum but I'd rather punt ang turn it over to somebody with experience. Great machine and it would be even better if it played. Bob Kolba

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AmberolaAndy
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Re: HELP: Seeking outside help to unfreeze mandrel on Edison Standard,

Post by AmberolaAndy »

bobkolba wrote: Sat Jun 26, 2021 7:07 pm Those who know me will attest I'm a collector, not a fixer. I have read all about how to unfreeze a mandrel bearing on the Forum but I'd rather punt ang turn it over to somebody with experience. Great machine and it would be even better if it played. Bob Kolba
I took a rubber mallet and a screwdriver and slowly chipped out the old mandrel bearing bit by bit when I restored my Model E standard. Be careful and don’t break any iron castings.

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dzavracky
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Re: HELP: Seeking outside help to unfreeze mandrel on Edison Standard,

Post by dzavracky »

I broke my Home casting doing this. I am sure it can be done this way…but isn’t there another way to do it?

David

hbick2
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Re: HELP: Seeking outside help to unfreeze mandrel on Edison Standard,

Post by hbick2 »

Send it to George Vollema at Great Lakes Phonograph:

https://www.victroladoctor.com

Excellent work at a reasonable price.

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Inigo
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Re: HELP: Seeking outside help to unfreeze mandrel on Edison Standard,

Post by Inigo »

I suppose it would be better to drill the bushing out with a drill machine, much softer treatment. But I also suppose the true center must be found first and marked on the casting, so to install the new brass bushing and drill its center true...
Inigo

VanEpsFan1914
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Re: HELP: Seeking outside help to unfreeze mandrel on Edison Standard,

Post by VanEpsFan1914 »

No need to drill anything on the Standard--It's really a matter of using penetrating oils to loosen things up a bit, and (with a rubber glove or something) getting the mandrel to turn enough to release it.

Then chipping it out with a rubber, rawhide, or wooden mallet & a screwdriver works. It is pot-metal so it's always more fragile than the iron surrounding it. Cast iron is very brittle, of course, but pot-metal can shatter on a crystalline structure so it's actually kind of fun to try to break it.

I could probably get it out for you. Where are you located?

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rgordon939
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Re: HELP: Seeking outside help to unfreeze mandrel on Edison Standard,

Post by rgordon939 »

I have found that after using penetrating oil to free up and remove the mandrel I use a hacksaw blade to carefully to make a cut through the bearing. It is then easy to knock out the bearing.

Rich Gordon

bobkolba
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Re: HELP: Seeking outside help to unfreeze mandrel on Edison Standard,

Post by bobkolba »

I'm located in the Phoenix area. I wish there were more phono collectors here. Thanks for your comments.

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