I'm finding 5.5 to 6 turns is a pretty solid constant. Try going down
that much on each one, then going 1/2 turn in, 1/2 out, and down in 1/2
increments.
C
On 2/14/2023 10:35 AM, Nigel Johnson Ham via cctalk wrote:
Unfortunately, I had already removed the nut before you warned me about
that in a previous email. However I did try various adjustments of that
nut with disappointing results. Maybe I will try doing it many
different settings! I did compare it to the position of the hut in a
TK50 and it was about the same.
I can feel a definite rubbing in the idler, but I will keep trying. I
can visualise that the sensor slots must be the correct height to give a
good since wave.
thanks
Nigel
On 2023-02-14 09:58, Chris Zach via cctalk wrote:
Looking at my notes I found a similar situation: Tape would not load
properly. Turned the rear nut 1/2 turn in, and it loaded. Then it
would not read, turning the front nut down 1/2 turn allowed it to do
proper reads and restores from an already-written tape.
I think there is an oscilliscope method of setting the capstain height
out there somewhere, but this "barn door" method works for me as well.
C
On 2/13/2023 9:31 PM, Chris Zach via cctalk wrote:
No I don't. I just lubricate them. Odd though, did you turn the nut
down the same number of turns and is the capstain dragging on the tape?
C
On 2/13/2023 8:05 PM, Nigel Johnson Ham via cctalk wrote:
Chris, I don't suppose you have the part number for suitable
replacement bearings, do you? I have cleaned out the sensor wheel
but still the same problem - but when i give the idler wheel a
little push it at least goes to ready.
cheers,
Nigel
On 2023-02-08 10:49, Chris Zach via cctalk wrote:
I think it's metal, but using a bit of good old soapy water and a
rinse/dry should be fine. Remember that there is a little window
screen part there to ensure the optical system only sees the slit
right under it, don't forget to install it as well.
Glad to hear there is progress. Let us know how it works out!
C
On 2/8/2023 10:06 AM, Nigel Johnson Ham via cctalk wrote:
Well, I found dust and what looks like oil on the optical wheel.
It looks like somebody may have tried to lube the bearings in situ
and used too much oil :-(
I'm amused to see that it uses the same moiré principle that was
used way back in the RK05!
Do you know if the pattern on the wheel is purely cut out, or is
there any photographic film involved? I think the only possible
solution would be to clean it with isopropyl, but useless to do
that if it is film.
