Print

Print


Please send the photos also to my email if possible. Richard said he 
used his racal instrumentation machine at 15 ips to read the tapes and 
then he changed the sampling freq from 88.2 downward. Any info on your 
mods will be welcome along with the pictures.
Thanks in advance
Shai

Marie O'Connell wrote:
> I don't think Richard meant fast, infact, slow.....lllllllll.......yyyyyy is
> very helpful.  We have modified 2 of our Studer B67 to be low friction
> machines and that has helped alot.  I can send pics when I get back to work
> in the morning.  I rarely use the isopropyl drip machine now because of
> these 2 .  They do a grand job.
>
> Cheers
> Marie
>
> On Wed, Dec 16, 2009 at 8:17 PM, Shai Drori <[log in to unmask]> wrote:
>
>   
>> It's sad to hear Peter passed away. His knowledge was extensive and his
>> humor was in the best British tradition. I wonder if I have a picture of the
>> thing somewhere. BTW, I didn't think about playing squealing tapes fast,
>> that's a good idea, Thanks Richard. I'll try it next time a tape comes in
>> that does that. I didn't think about it before but I now realize that all
>> the tapes that squealed  were 3.75ips.
>> Shai
>>
>>
>> Mark Campbell wrote:
>>
>>     
>>> Please tell us more about the "grandfather clock" tape recovery machine.
>>>
>>> Mark
>>> -----Original Message-----
>>> From: Association for Recorded Sound Discussion List
>>> [mailto:[log in to unmask]] On Behalf Of Shai Drori
>>> Sent: Wednesday, 16 December 2009 8:12 AM
>>> To: [log in to unmask]
>>> Subject: Re: [ARSCLIST] Tape Shed-Sticking & stripping
>>>
>>> This reminds me of the "grandfather clock" thingamajig I saw at the
>>> British library. It is a large board with rollers that the tape goes
>>> through making a serpentine. The tape travels very slowly and can be
>>> heated or chilled as needed. They made this for some agfa tapes that
>>> stuck. I have never had a 3m 176 make trouble but this sounds like many
>>> 50's 60's tapes I transfered that were of American origin. One squealed
>>> so bad we had to soak it with silicone. I am wondering it there is a
>>> benefit to slow winding under a cold air blast, like an air conditioning
>>> duct pointing at the transport. My a/c/ has a setting for drying the
>>> air. Very cold air forced out and the rh drops very fast..
>>> Shai
>>>
>>> Richard L. Hess wrote:
>>>
>>>
>>>       
>>>> Hi, Martin,
>>>>
>>>> This is very problematic, and I do NOT think baking is a good idea.
>>>>
>>>> There is a CHANCE that month-long cold soak in a desiccated atmosphere
>>>>
>>>>
>>>>         
>>>
>>>       
>>>> (silica gel inside double freezer (or foil) Zip-Loc bags in the fridge
>>>>
>>>>
>>>>         
>>>
>>>       
>>>> (not freezer)).
>>>>
>>>> It has worked for some 3M 176 that showed this symptom. It has also not
>>>> worked for other tapes. Jim Wheeler gave me this technique. I don't know his
>>>> source. I haven't used it much.
>>>>
>>>> The other thing to try is VERY slow unwinding - 1.88 in/s or slower.
>>>> Sometimes that alone helps.
>>>>
>>>> The tape in the photo was baked based on a consensus of the people at the
>>>> seminar (including the tape owner) because we didn't have time for
>>>>
>>>>
>>>>         
>>>
>>>       
>>>> cold soak and we wanted to see what would work (or not).
>>>>
>>>> Since that article, I have had good results with 3M201 which had the same
>>>> problem and the 1.88 in/s wind-through solved it.
>>>>
>>>> Good luck!
>>>>
>>>> Cheers,
>>>>
>>>> Richard
>>>>
>>>> At 12:34 PM 2009-12-15, Martin Fisher wrote:
>>>>
>>>>
>>>>         
>>>>> Got a polyester/plastic non-backcoated reel in which the binder is
>>>>> stripping off onto the adjacent wind.  AKA "binder adhesion to back of next
>>>>> layer" on Richard Hess' site.
>>>>>
>>>>> http://richardhess.com/notes/2006/05/26/binder-adhesion-to-back-of-ne
>>>>> xt-layer/
>>>>>
>>>>>
>>>>> Might baking be a solution for this?
>>>>>
>>>>> Martin
>>>>>
>>>>>
>>>>>           
>>>> Richard L. Hess                   email: [log in to unmask]
>>>> Aurora, Ontario, Canada       (905) 713 6733     1-877-TAPE-FIX
>>>> Detailed contact information:
>>>> http://www.richardhess.com/tape/contact.htm
>>>> Quality tape transfers -- even from hard-to-play tapes.
>>>>
>>>>
>>>>         
>>>
>>>       
>
>