[QuadList] RCA TRT Quad Headwheel panel on ebay

[Ted Langdell]

On Dec 20, 2008, at 5:57 PM, Don Norwood wrote:

> Hi Ted:
>
> According to my RCA catalog, this part number is a 5-mil headwheel  
> with ball bearings.

So this would likely have been used to record tapes at 7.5 ips?

What machines did it fit?


> A bit of headwheel trivia.......These lowband headwheels were  
> offered with either ball bearings or air bearings.  I believe that  
> RCA was the first to offer air bearings, while Ampex was the first  
> to offer rotary transformers.  RCA apparently continued to offer the  
> lowband heads after they developed their highband head.   However,  
> after Ampex introduced the Mark Ten for highband, they no longer  
> made their lowband panels, but versions of the Mark Ten were  
> available for low band.  As far as I know, there were never any of  
> the Ampex lowband Mark Three panels that had air bearings, but the  
> Mark Ten was available either way to accomodate machines without the  
> air package.
>
> Don


> ----- Original Message -----
> From: Ted Langdell
> To: Quad List
> Sent: Friday, December 19, 2008 10:14 PM
> Subject: [QuadList] RCA TRT Quad Headwheel panel on ebay
>
> This has apparently been on ebay for a while.
>
> RCA part MI-40791-AZ, serial 3203.
>
> http://cgi.ebay.com/Vintage-Quadruplex-VTR-Headwheel-RCA-TRT-Quad_W0QQitemZ230252354142QQcmdZViewItemQQptZVideo_recorders_Players?hash=item230252354142&_trksid=p3286.c0.m14&_trkparms=66%253A4%257C65%253A1%257C39%253A1%257C240%253A1318#ebayphotohosting
>
> Hope everyone is warm and dry... and doesn't suffer a power outage  
> or air loss while the headwheel is spinning.
>
> Ted
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