10 Nov
2018
10 Nov
'18
7:03 a.m.
Hi all
Any suggestions where to find two 50Hz-Pulleys for the 8" Floppy drive
Mitsubishi M2894-63B?
If there also the appropriate ribbon gummies available, I would be very
happy.
Regards
Thomas
10 Nov
10 Nov
7:25 a.m.
At 12:03 PM 10/11/2018 +0000, you wrote:
Hi all
Any suggestions where to find two 50Hz-Pulleys for the 8" Floppy drive
Mitsubishi M2894-63B?
If there also the appropriate ribbon gummies available, I would be very
happy.
Regards
Thomas
Do you know what they look like, and the dimensions?
Because I have these. http://everist.org/pics/misc/IMG_1655_pulley_800.jpg
_Maybe_ they were off Mitsubishi drives, not sure. Had them in a box of floppy drive
related bits for a loooong time, and have no recollection of where they came from.
These are 49.0 mm OD, hole 4.7 mm dia. And this is Australia, with 50Hz mains.
Guy
27 Mar
27 Mar
12:27 p.m.
On 10.11.18 13:03, Riesen Thomas via cctalk wrote:
Hi all
Any suggestions where to find two 50Hz-Pulleys for the 8" Floppy drive
Mitsubishi M2894-63B?
If there also the appropriate ribbon gummies available, I would be very
happy.
Regards
Thomas
Thomas's floppydrive is currently on my bench : as we were unable to find the rights
parts I proceeded to 3D print them.
A sleeve for the existing 60 Hz pulley was made from PLA, a replacement belt was printed
using "Ninjaflex".
The resulting combination is already running for several hours, the belt is as flexible as
the original and shows no signs of wear yet.
( This particular drive has the distinction of using a true rubber belt, not the
reinforced textile band you normally see )
This ninjaflex material could potentially be very useful in producing capstans....
Experiments will follow as soon as time permits !
Jos
12:51 p.m.
Hi Jos,
Thanks very much for posting about the NinjaFlex material. That will come
in very handy as my students design robotic parts, although I'm sure it
won't be long before custom-made "rubber" bands will be flying around the
lab, and new-fangled slingshots ("wrist rockets") won't be far behind those
... heavy sigh. "You'll shoot yer eye out, kid!"
I loved listening to Jean Shepherd on the radio as a kid, spinning yarns
from his own childhood, including his obsession with
acquiring a Red Ryder
BB gun from the Big Ol' Fat Guy in the Red Suit. He
eventually
consolidated many of his best tales into the movie script for, and
narrated, "A Christmas Story", which is now mandatory holiday watching in
our house.
All the Best,
Jim
On Wed, Mar 27, 2019 at 10:27 AM jos via cctalk <cctalk at classiccmp.org>
wrote:
On 10.11.18 13:03, Riesen Thomas via cctalk wrote:
Hi all
Any suggestions where to find two 50Hz-Pulleys for the 8" Floppy drive
Mitsubishi M2894-63B?
If there also the appropriate ribbon gummies available, I would be very
happy.
Regards
Thomas
Thomas's floppydrive is currently on my bench : as we were unable to find
the rights parts I proceeded to 3D print them.
A sleeve for the existing 60 Hz pulley was made from PLA, a replacement
belt was printed using "Ninjaflex".
The resulting combination is already running for several hours, the belt
is as flexible as the original and shows no signs of wear yet.
( This particular drive has the distinction of using a true rubber belt,
not the reinforced textile band you normally see )
This ninjaflex material could potentially be very useful in producing
capstans....
Experiments will follow as soon as time permits !
Jos
1944
days inactive
2081
days old
3 comments
4 participants
participants (4)
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guykd＠optusnet.com.au -
jim.manley＠gmail.com -
jos.dreesen＠greenmail.ch -
thomas.riesen＠predata.ch