The Talking Machine Forum — For All Antique Phonographs & Recordings

I have lots of nice phonographs that I only look at. No time right now to fix them all. No real reason to fix them all. Some would not be that enjoyable to play anyway. Not everything has to play at this moment in time. Maybe there is another junk model D home that could forfeit its bed plate. I was hoping another member would have a junk machine with a bedplate.

I’m at school and don’t have any pics with me but I do have a video. I hope this helps assess the damage

I would try the JB Weld approach first. There shouldn't be an anormous amount of pressure applied to the mandrel shaft bearing on the broken piece so it will probably hold just fine.
I believe these have a pot metal bearing sleeve right next to the mandrel so you may want to replace it with a new brass one before attempting to repair the break.

Yes, that helps... it looks like the cast iron bedplate can be repaired with two part JB Weld, but the shaft with the gear on the end is another story... It appears to be your feedscrew (maybe you can verify that). If so, it is important that it runs straight and true and most likely cannot be repaired easily. The end is too small to effectively epoxy it. It could be repaired by a machinist who could drill out the centers of both pieces, insert a steel pin and silver solder it back together (maybe, but no guarantee). So, you will probably need to find a replacement, which is probably cheaper than finding a machinist to repair it...

Provided the cast iron is realigned properly, I don't see a need for machinist's etc.
That gear remains stationary inside the belt pulley to facilitate in changing the speed of the feedscrew in 2 or 4 minute mode, and while the centre of the gear acts as a bearing for the feedscrew, it shouldn't throw it out of alignment if the bed plate piece is in its original position.

Home model A and B parts are easier to get. The model D parts are not hard to get but a little more expensive. I agree with the JB weld fix as I have also used it with good results. What have you got to lose. When you put the glue on make sure you get all the runs off and let it cure for 24 hours. A black felt tip pen will temporally touch it up. Try that while you are looking for a new plate. Cost $ 5.00 Put the carriage shaft on it while you glue it on to keep it aligned. Tom

So isn't this thread a rehash or repeat of the one from a month ago?

viewtopic.php?f=2&t=43201

Yeah it is a repeat of the post. It’s been on my mind lately and I wanted to ask what a good piece would be.

I’ll try to jb weld sometime hopefully soon.

Thanks for the helpful info!

If you need to replace the pot metal bearing sleeve between the feed screw and mandrel, I'd do that before repairing the bed plate.
You'll know if it needs replacing because the mandrel won't spin freely or at all.
I've never replaced one myself, but there are several threads addressing the removal of the pot metal which from memory involves drilling the pot metal and applying an acid to eat it away but it leaves the cast iron untouched.
The main thing is don't try and force the mandrel free or the cast iron will break.

Curt A wrote:Yes, that helps... it looks like the cast iron bedplate can be repaired with two part JB Weld, but the shaft with the gear on the end is another story... It appears to be your feedscrew (maybe you can verify that). If so, it is important that it runs straight and true and most likely cannot be repaired easily. The end is too small to effectively epoxy it. It could be repaired by a machinist who could drill out the centers of both pieces, insert a steel pin and silver solder it back together (maybe, but no guarantee). So, you will probably need to find a replacement, which is probably cheaper than finding a machinist to repair it...

The circled part stays stationary, however, there is supposed to be a pin protruding past the gear. It has broken off and the pin portion is currently stuck in the end of your mandrel shaft. Bottom line, you need a new end bearing, (which is what the gear thing is).