Z4648252@SFAUSTIN.BITNET (Z4648252) (12/18/89)
Hello all,
I read on the net that drive speed can have an effect on Blood Money,
the real version, not the magazine version. Using QuickIndex 15, I noticed
that my RPM was constantly at 301. Surely Blood Money couldn't be thrown
by THAT?!
Well, it was. I took the drive apart and tried to lower the rpm with
the potentiometer inside of the drive but Blood Money seemed to not
notice anything. I checked the drive's speed qith QuickIndex15 again.
Drive rpm still hovered at 301. I guess the pot has a VERY limited
range.
To test things further, I temporarily replaced the drive (Mega computer,
by the way) with an old wheezing Epson mechansim (rattles, bangs, and
thrashes). Weeeeelll, it booted up Blood Money just fine.
I returned the original drive and decided to fool around with the
idea of placing some sort of weight on the flywheel. Using SuperGlue and
a dime, I glued the dime to one side of the flywheel's center. After only
a few minutes of potentiometer adjustment, I was able to get the drive
down to 300rpm!!! For confirmation, I snapped the dime back off and
tried to adjust again. Nope, I never was able to get the rpm rating down
to 300. Regluing the dime onto the flywheel restored the 300rpm speed.
Blood Money now boots fine.
Ok, well, that is fine and good, but I'd have preferred an 'electronic'
method. If anyone can suggest another means of correction that is less of
a hack, let me know. Also, can the dime's weight cause undue wear on the
flywheel?
Larry Rymal: |East Texas Atari 68NNNers| <Z4648252@SFAUSTIN.BITNET>ljdickey@water.waterloo.edu (L.J.Dickey) (12/21/89)
In a recent article, Z4648252@SFAUSTIN.BITNET ( Larry Rymal ) writes about his experiments with his disk drive. | I took the drive apart and tried to lower the rpm with | the potentiometer inside of the drive but Blood Money seemed to not | notice anything. I checked the drive's speed qith QuickIndex15 again. | Drive rpm still hovered at 301. | ... I glued the dime to one side of the flywheel's center. and asks: | ... , can the dime's weight cause undue wear on the flywheel? It would be a big surprise to find any wear on the flywheel itself. (smile). I would worry about wear on the bearings if the weight is off center. If it is off center, I would try to balance the it on the flywheel, with say, a second weight glued at a diametrically opposite point. -- L. J. Dickey, Faculty of Mathematics, University of Waterloo. ljdickey@water.UWaterloo.ca ljdickey@water.BITNET ljdickey@water.UUCP ..!uunet!watmath!water!ljdickey ljdickey@water.waterloo.edu