Date   : Wed, 24 Mar 2010 19:44:13 +0000
From   : beeb@... (Dr. David Alan Gilbert)
Subject: Re-using floppies

* Rick Murray (rick@...) wrote:
> On 23/03/2010 20:34, Dr. David Alan Gilbert wrote:
> 
> > Those Teak drives have standard Shugart interfaces (and were in a nice
> > external box) - but if Commodore drives always had special interfaces,
> > I'd love to know what else used 100tpi ?
> 
> I Googled "100 tpi disk" and found this:
>    http://www.retrotechnology.com/herbs_stuff/d_micropolis.html
> 
> If nothing else, it's a push in the direction of what to look for next...

Thanks!  One of the other things mentioned on that was that
Commodore took standard drives but used different drive electronics,
which as I'd previously mentioned was what I found when we got
a pair 2nd hand - it wasn't just they used standard drives with GPIB
conversion.

Just looking on my shelf, our TEAC drive is an FD-50C-11 (serial 041492);
and does have markings for both 50 and 60Hz strobe timing.

Googling for FD-50C-11 now actually finds some hits unlike when
I last tried this a few years ago; one of the retrotechnology.com
pages you found above, but also someone on a vintagecomputer board with
the signature of 

'Wish list: ZX81, Apple //e,
 BBC B, anything from Sord and some Teac FD-50C-11 100tpi SS drives' 
(although he's in New Zealand by the look of it and that would
be a bit of a shipment!)

Dave
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