place your bets

On 3 Mar 2007 at 15:35, Fred Cisin wrote: A few--very few--companies skipped the 8" drive phase. We never bothered at Durango (started 1976). As a result, rather than use the SA-400, we opted to go with Micropolis and started out with the SS 100 tpi 5.25" (1015?). It wasn't a lot of fun--you'd think that 5.25" drives would have all of the problems ironed out from 8" drive experience, but that wasn't the case. Our first systems were delivered in 1978, I think. The Micropolis drive wasn't built on a casting, but used a fairly heavy (1/8") steel plate as the base. Back then, there were also several different clamping arrangements-- and connection was via a single-in-line header instead of the 34- conductor edge connector. I think the early Sony 3.5" drives used a 26-pin header arrangement to answer someone else's question. Cheers, Chuck