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Video? I do more than 100 formats combined (audio, video, and film). 
It's just putting to good use my collection of machines. LOL. Actually 
my wife is getting a bit sick of all the equipment and oddly enough so 
do I. I also wonder if it's the location. Israel has many different 
climates so I doubt it. Could it be that the oldest tapes here are 
usually 15-18 years old?
As for DAT tapes baking an AMPEX is odd. Those are usually the best I 
come across, with TDK being the worst and Fuji also pretty crappy. 
U-matics are actually very easy to deal with. Something on the line of 
bake, clean, transfer, good bye. Just add a good player.
Cheers
Shai
בתאריך 20/09/12 1:45 PM, ציטוט Richard L. Hess:
> Hi, Shai,
>
> You're a brave man doing video, too <smile>.
>
> Ten years ago I heard of the same problem/practice with 3/4-inch U-Matic.
>
> Twenty years ago (plus or minus) I had this issue with one box of 10 
> DAT tapes I bought new back then.
>
> I have probably run fewer than twenty tapes in my DA-38.
>
> With that said, binder hydrolysis is probably an issue with some runs 
> of coated tape (though I would not expect it with metal evaporated 
> tapes). So far, I have baked one DAT tape and that made it 
> recoverable. Oddly, it was an Ampex tape.
>
> Storage conditions make a huge difference. The Library of Congress is 
> apparently NOT experiencing the need for increased baking times that 
> other restorers and I have noted due to the fact that they are 
> transferring their holdings which are stored in proper storage 
> conditions (which I do not have the specifics for at the moment). Is 
> it possible that your location in Israel is a dry one (I do recall a 
> fair amount of desert there, though I also recall that much of the 
> population is in the coastal region) which is reducing the amount of 
> binder hydrolysis?
>
> Trying to generate a "big picture" from all these data points is 
> interesting and sometimes frustrating, and I do not think we'll ever 
> know the complete picture due to the lot-to-lot chemistry changes and 
> manufacturing tolerances that have been documented.
>
> Cheers,
>
> Richard
>
> On 2012-09-20 1:26 AM, Shai Drori wrote:
>> Hi Joe
>> Why are you stopping many times to clean heads on 8mm and Hi8? That 
>> never happens to me. I would check tape path or heads or try another 
>> deck just to be sure. Sounds odd. Any one else has data on this?
>> Shai
>

-- 
בברכה,
שי דרורי
מומחה לשימור והמרה של אודיו וידאו וסרטים 8-35 ממ.