Disk flying height

With all these discussions about disk heads is there anyone that is interested in some RK05 heads? I am bidding on a bunch of DEC equipment tomorrow by noon EST and there are the following that may be in interest to those that are restoring RK05's etc. -G938 - G 5 RK05J HEAD POSITION SERVO,DOUBLE X 8.5 -H743 -AA G 1 PWR SUPPLY, H737 REPACKAGE FOR RK05 PLUS BATTERY,1 30-10863-01 G 10 HEAD,DISC RECORDING,RK05,''B''UP 30-10863-02 G 6 HEAD,DISC RECORDING,RK05,''B''DOWN 30-17108-00 G 2 DISK,PACK RM05CE ALIGNMENT 9883-51 CONTROL DATA SYSTEMS IN These are all by line item and quantity shown. If you are interested let me know off list by 11:30 tomorrow (8/12) as I have to have the bid in by noon. I will just add it to my current bid. (the entire list is 76 pages) Dan -----Original Message----- From: Tony Duell <ard(a)p850ug1.demon.co.ukTo: Discussion re-collecting of classic computers <classiccmp(a)u.washington.eduDate: Wednesday, August 11, 1999 6:47 PM Subject: Re: Disk flying height Wow!. I am impressed (very). Although I often thought some of the stuff in the RK05 service manual was a little OTT. Those drives _are_ pretty robust. (The HP drive that we're discussing here uses similar technology to the RK05 and will have much the same flying height, etc. So I sould guess that drive will be similarly robust). I assume you mean the dust caps over the ends of the absolute filter and not the filter capacitors in the PSU. You mean that drive had no airflow at all? Again, Wow! :-). RK05s (and similar drives) are good to learn on, because it's difficult to get a fatal headcrash. I've seen it happen once, or rather I got to change the heads after it had happened. That head had visible scoring across the pad. I suppose it might have cleaned up, but I had new heads in stock anyway... But most of the time if you stick in a damaged platter or have other problems, you get the 'ting, ting, ting' noise long before the head is ruined. -tony