Re: [ARSCLIST] Capstanless ATRs (was Quarter-inch splicing tabs)

[Rod Stephens <savecal@xxxxxxxxxxxxx>]

A variation on this theme was the later invention and use of servoed 
feed and take-up reels for capstanless tape handling used on my 
brother's (John Stephens) analog multitrack ATRs that are still in use 
by many engineers who prefer it for mastering.  Ampex later used a 
similar type of technique on one of their models (John never patented 
his).  His additional R&D has to do with upgrading Bosch FDL60 Telecines.
http://stephensaudiovideo.com/

He is also mentioned in the AES history of American Tape Recording:
http://72.14.203.104/search?q=cache:21D8Xe9AHy4J:www.aes.org/aeshc/pdf/chronology.pdf+Stephens+Multitrack&hl=en&gl=us&ct=clnk&cd=20

Also one of his legendary 1" cutting/splicing blocks is on sale on eBay:
http://cgi.ebay.com/Ampex-Stephens-signed-Editall-2-inch-splice-blocks_W0QQitemZ7395867404QQcategoryZ15199QQtcZphotoQQssPageNameZWDVWQQrdZ1QQcmdZViewItem

Needless to say, there is a bit of family pride in his accomplishments

Rod Stephens
Family Theater Productions

Robert Hodge wrote:

> Ampex used an indirect drive on their first machines- Models 200 and 300. The fine speed adjustment for the capstan drive was accomplished by adding and subtracting the amount of drag applied to the rubber tire coupled through a flywheel to the capstan shaft.  A minimum warm up time of 5 minutes was needed before any adjustment to the drive was attempted.
>
> A supplied strobe disc was used to determine the correct amount of drag.
> It must have been difficult to maintain speed consistancy between machines , using this method.
>
> No wonder later machines used the vastly superior direct capstan drive motor.
>
> Bob Hodge
>
>
>
>
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> Robert Hodge,
> Senior Engineer
> Belfer Audio Archive
> Syracuse University
> 222 Waverly Ave .
> Syracuse N.Y. 13244-2010
>
> 315-443- 7971
> FAX-315-443-4866
>
>  
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