[QuadList] Ampex Quad VTR Airflow Requirements

[L.E. Odham]

Hello Steve and Roger,

For a Mark ten head panel,

The guide needs 35-40 inches of vacuum, and the air bearing head needs 58-60 psi. The tank pressure typically runs 100-130 psi, and regulate that down to 58 psi. That gives a good safe air reserve while the head is spinning.
It is a good idea to have a moisture trap and an oil trap in the line if you are using a cylinder type compressor instead of a carbon vane type.

OK, hope this helps a little. If you need book spec pages, I have them here somewhere.

larry

LE Odham
Engr/Tech
TAMIS Archive
Knoxville, Tenn.

----- Original Message -----
Hi Roger and Ted...

This is one subject that "I too" have been waiting patiently (very 
patiently) to roll around and get discussed and determined.

I really want to get my VR1000C (w/all upgrades 1961) back in a nice 
run/show installation.

The airflow/vacuum part I had no training or knowledge of how it went on or 
how to "get it right.

I will follow this subject with you folks very closely.

Which machine do you have Roger?

Steve Spears
Orrs Island, Maine


----- Original Message ----- 
From: "Ted Langdell" <ted at quadvideotapegroup.com>
To: "Quad List" <quadlist at quadvideotapegroup.com>
Sent: Friday, June 01, 2012 1:56 AM
Subject: Re: [QuadList] Ampex Quad VTR Airflow Requirements


> Hi, Roger,
>
> Welcome to the list.
>
> It might help if you could be specific about which models, since there may 
> be some variations between series.
>
> You should get answers in fairly short order depending on who's on-line at 
> any given time.
>
> Ted
>
> Ted Langdell
> Secretary
>
> On May 31, 2012, at 10:11 PM, Roger Brett wrote:
>
>> Hi,
>> Does anyone have info regarding air system requirements for the typical 
>> Ampex VR series quad machine?  I'm planning the air supply system for one 
>> fairly soon.
>>
>> It's been quite a while since I maintained one of these, and I don't seem 
>> to have this data on file.
>>
>> I don't have physical access to the unit yet, but besides the air 
>> bearings on the head, I believe it has a venturi system to generate 
>> vacuum for the guide.  This aspect would of course increase the flow 
>> requirements.
>>
>> Data I'm trying to get:
>>
>> - Max (worst case) CFM of airflow needed for bearings and venturi 
>> combined
>> - Nominal air pressure needed at the head bearings for proper operation
>>
>> Any help would be appreciated!
>>
>> Thanks,
>>
>> Roger Brett
>>
>
> Ted
>
> Ted Langdell
> Secretary
>
>
> Please trim posts to relevant info when replying.
>
> Change subject to reflect thread direction. Thanks.
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Please trim posts to relevant info when replying.

Change subject to reflect thread direction. Thanks.
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