2. analog
  3. 180171-484

Dynavector 507 arm lift assembly on a 501 arm

Yesterday, I was able to successfully enlarge the arm lift hole in my 501 arm to accept the larger diameter arm lift of the 507. It was tight, but clamping my drill press vice in position, allowed a precision enlargement of the arm lift hole using a 5/8" Forstner bit. 

It fits, and works perfect, and made using my turntable a joy again. Thanks to Dover, Lewm, and others for their help in getting this done.

Thanks and enjoy, my analog brothers!

Dan

islandmandan
noromance's avatar
noromance
10,046 posts
 

I'd be afraid the vibrations would destroy the bearings. Non?

islandmandan OP
1,260 posts
 

I'm trying to discern what bearings and what vibrations you have mentioned. The arm lift is a passive device, and isn't capable of producing vibrations.

It has no effect on any bearings that I can discern. Can you elaborate?

Regards,

Dan

noromance's avatar
noromance
10,046 posts
 

The actual arm bearings. With the drilling.

islandmandan OP
1,260 posts
 

No, that's not a problem. The filings stayed close to where the drilling was happening, and the other saving grace is I have an air compressor that I was able to blow the filings away, making the arm and bearings nice and clean after the drilling was done.

Regards,

Dan

noromance's avatar
noromance
10,046 posts
 

Hi Dan, when you drilled the post, the vibrations travel to the precision bearings causing them to vibrate and rub together. This can cause roughness or looseness. Or, if sapphire bearing cause them to shatter. I’m not sure how the bearings are configured in the DV but that would destroy an Ittok!

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