[QuadList] RCA Headwheel

[Gary Adams]

Yes there was detection for this and the head would be shut down safely
before air was gone.  Dynamic braking was used if all set up correctly.
Gary

 

From: quadlist-bounces at quadvideotapegroup.com
[mailto:quadlist-bounces at quadvideotapegroup.com] On Behalf Of
trandoc at aol.com
Sent: Saturday, April 17, 2010 6:59 PM
To: dwnorwood at embarqmail.com; quadlist at quadvideotapegroup.com
Subject: Re: [QuadList] RCA Headwheel

 

Hello again,

If my memory serves, the RCA digital servo had a brake circuit in the
headwheel motor driver that would stop the motor if air bearing pressure was
lost.

Harold

 

 

 

-----Original Message-----
From: Don Norwood <dwnorwood at embarqmail.com>
To: Quad List <quadlist at quadvideotapegroup.com>
Sent: Sat, Apr 17, 2010 7:57 am
Subject: Re: [QuadList] RCA Headwheel

Harold is correct if this is an air bearing head, and more importantly, it
can be seriously damaged by turning it without air.

 

The nameplate will have an MI- number.  Give us that number and we can tell
if it is air or ball bearing, 5 or 10 mil.

 

Don

----- Original Message ----- 

From: trandoc at aol.com 

To: quadlist at quadvideotapegroup.com 

Sent: Saturday, April 17, 2010 5:03 AM

Subject: Re: [QuadList] RCA Headwheel

 

Scott,

The headwheel will not turn freely without a source of air pressure. Maybe
someone on the list with an RCA machine could use it.

Regards,
Harold

 

 

 

-----Original Message-----
From: Scott Thomas <scottgfx at mac.com>
To: Quad List <quadlist at quadvideotapegroup.com>
Sent: Sat, Apr 17, 2010 12:52 am
Subject: [QuadList] RCA Headwheel

I was talking to our CE today. I had sent him the VR-2000 videos that Park
had 













put up recently. He then brought me over to the engineering closet and
showed me 













something I hadn't seen in around 20 years; a case with an RCA headwheel 













assembly.



























It looks fairly intact, but the motor doesn't spin freely. Probably too many














years in the humid Florida weather. It had a sticker indicating that it had
been 













refurbished by... (CVC??? I don't remember, the company owned by Kodak. I
know I 













saw a lot of those labels before)



























Is it just an artifact to be admired, or should I implore the company to
have it 













refurbished for some greater good?



























Anyway, it was fascinating to see one again.



























Scott Thomas




























_______________________________________________






Please trim posts to relevant info when replying!






Send QuadList list posts to QuadList at quadvideotapegroup.com






Your subscribe, unsubscribe and digest options are here:






http://mail.quadvideotapegroup.com/mailman/listinfo/quadlist_quadvideotapegr
oup.com






-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://quadvideotapegroup.com/pipermail/quadlist_quadvideotapegroup.com/attachments/20100417/5d8e6329/attachment-0005.html>