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Frank[_7_] Frank[_7_] is offline
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Default open reel-to-reel deck prob

Having problem with feed reel apparently binding about 75% of the way
through a recording or playing. About 75% of the way machine
stops. Take up reel seems
unable to turn beyond this point. Just tinkering with it shows take
up reel is not binding but feed reel is very stiff or tight to turn
manually. When feed reel is almost full and takeup reel almost empty
there is no problem.

This is an open reel, reel-to-reel tape deck.

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bg[_2_] bg[_2_] is offline
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Default open reel-to-reel deck prob


Frank wrote in message
...
Having problem with feed reel apparently binding about 75% of the way
through a recording or playing. About 75% of the way machine
stops. Take up reel seems
unable to turn beyond this point. Just tinkering with it shows take
up reel is not binding but feed reel is very stiff or tight to turn
manually. When feed reel is almost full and takeup reel almost empty
there is no problem.

This is an open reel, reel-to-reel tape deck.

Most common problem is that the pinch roller is slipping, and when the
supply reel diameter gets small, the pinch roller can't pull the tape.
Or -
check hold back tension
check than the brake isn't sticking
check that the shaft or motor holding the supply reel hasn't seized up
check the capstan

the capstan pulls the tape at a constant speed
the supply reel usually pulls against the tape with about 3 oz of tension
for 1/4 inch tape
the take up reel pulls in the direction of the tape also with about 3oz of
tension
bg
the takeup reel


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don ward don ward is offline
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Default open reel-to-reel deck prob

When the tape stalls is the pinch roller skidding on the tape between
the roller and the capstan... the capstan is still turning ??
Do not hit stop button unwind some of the feed reel by hand
does the feed real turn freely or binding .. if it doesnt turn freely
your problem is most likely lubrication of the spindle bearings.
If the feed reel turns freely and there is tape slack that is not being
pulled through the pinch roller/capstan you have one of 2 problems.
Problem 1) some older tape especially bargain brands were slightly wide
and will hang up in the tape guides or pro or semi pro machines. No
solution for that.
Problem 2) Sticky tape syndrome mostly associated with Ampex tape. The
binder has absorbed moisture and acts like sticky flypaper going
through the tape path and sticks to the guides and stalls.
One of the solutions to this is known as tape baking in an over for
several hours at 110 120 degrees to bake the moisture out ... not for
amateurs to try with out some detailed instructions.
Get back to me what you find is your problem
dnw


In article
,
Frank wrote:

Having problem with feed reel apparently binding about 75% of the way
through a recording or playing. About 75% of the way machine
stops. Take up reel seems
unable to turn beyond this point. Just tinkering with it shows take
up reel is not binding but feed reel is very stiff or tight to turn
manually. When feed reel is almost full and takeup reel almost empty
there is no problem.

This is an open reel, reel-to-reel tape deck.

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Eeyore Eeyore is offline
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Default open reel-to-reel deck prob



Frank wrote:

Having problem with feed reel apparently binding about 75% of the way
through a recording or playing. About 75% of the way machine
stops. Take up reel seems
unable to turn beyond this point. Just tinkering with it shows take
up reel is not binding but feed reel is very stiff or tight to turn
manually. When feed reel is almost full and takeup reel almost empty
there is no problem.

This is an open reel, reel-to-reel tape deck.


Entirely possible that the tape formulation has degraded.

Suggest posting in rec.audio.pro whey're they are very expert about this.

Graham

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Frank[_7_] Frank[_7_] is offline
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Default open reel-to-reel deck prob


Get back to me what you find is your problem


Never found the cause of problem. I went through and tested what I
could of all of your suggestions and the suggestions of the other
posts and all that I could determine was in order. However, the
process of doing that apparently did something and the machine is
working ok now. Thank you all for your suggestions.
Frank


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[email protected] sgordon@changethisparttohardbat.com is offline
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Default open reel-to-reel deck prob

Sounds like sticky shed. If this problem happens with some tapes but
not with others, that could be the culprit. Here's one way to deal
with it: http://www.tangible-technology.com/tape/baking1.html

Frank wrote:
: Having problem with feed reel apparently binding about 75% of the way
: through a recording or playing. About 75% of the way machine
: stops. Take up reel seems
: unable to turn beyond this point. Just tinkering with it shows take
: up reel is not binding but feed reel is very stiff or tight to turn
: manually. When feed reel is almost full and takeup reel almost empty
: there is no problem.

: This is an open reel, reel-to-reel tape deck.

 
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