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Run-out on platter

PostPosted: Wed Sep 11, 2019 7:42 pm
by Optimationman
Noticed that the platter on my new to me TNT has a slight "wobble". Discovered that the 3set screws on my platter are back out and not touching the spindle. I have adjusted the three to get the run-out ok. My question to you is should the platter be supported by the three screws, or should the platter rest as much as possible on the spindle flat surface?

Re: Run-out on platter

PostPosted: Wed Sep 11, 2019 7:51 pm
by Brf
Optimationman wrote:Noticed that the platter on my new to me TNT has a slight "wobble". Discovered that the 3set screws on my platter are back out and not touching the spindle. I have adjusted the three to get the run-out ok. My question to you is should the platter be supported by the three screws, or should the platter rest as much as possible on the spindle flat surface?


The platter sits on the bearing flange supported by the three platter set screws. Balancing the platter can be a tedious task, therefore, I would suggest purchasing an inexpensive run out gauge. Also, there should be a dot on the bearing flange and a dot on the platter’s underside. Make sure that these two dots are aligned, that way you can repeat the set up if the two piece need to be separated.

Re: Run-out on platter

PostPosted: Wed Sep 11, 2019 11:49 pm
by Optimationman
I understand using a dial gauge for adjusting run-out. I just wondering if the full weight of the platter should be resting on the 3 screws. In other words, should the only contact between the bearing spindle surface and the platter be through those 3 screws? I have discovered the dots and started this process with them lined up.

Re: Run-out on platter

PostPosted: Thu Sep 12, 2019 8:14 am
by Brf
Optimationman wrote:I understand using a dial gauge for adjusting run-out. I just wondering if the full weight of the platter should be resting on the 3 screws. In other words, should the only contact between the bearing spindle surface and the platter be through those 3 screws? I have discovered the dots and started this process with them lined up.


Yes, the full weight of the platter is supported by the three set screws.

Re: Run-out on platter

PostPosted: Thu Sep 12, 2019 9:36 am
by Optimationman
Thanks for that. Since that is true, I will make further adjustments.

Re: Run-out on platter

PostPosted: Thu Sep 12, 2019 12:27 pm
by _JT
Hey !! It's JT stopping by! If you ever need any immediate help, feel free to give us a call or contact us at info@vpiindutries.com :D

Re: Run-out on platter

PostPosted: Thu Sep 12, 2019 2:20 pm
by Votan
_JT wrote:Hey !! It's JT stopping by! If you ever need any immediate help, feel free to give us a call or contact us at info@vpiindutries.com :D

Hi JT,
It was May 31, 2019, when Mat introduced you, Jose and Sharon as new members of the VPI team, but since then we have seen little, if any, of your participation in the forum. I think it was of course a necessary step to familiarize you with all the varied requirements in your new duties.
Now, we sincerely look forward to your more active participation here, so that we will most often have your help and support, but also - why not – VPI’s view of what is being discussed in this forum. Michael.

Re: Run-out on platter

PostPosted: Thu Sep 12, 2019 9:12 pm
by macster
JT

Thanks for your help in getting my 16.5 up and running again. The new flange assembly did the trick.

M~