Quote:
Originally Posted by Barrykgerdes
Hi Bojan
You mentioned the steppers off a 5 1/4" drive. Did you do any testing to find out if there were better motors. I built a test rig about 12 years ago and tried all sorts of salvaged steppers. The fastest I got comes from a miniscribe 20 MB MFM HDD they were nearly 3 three times as fast as the best 5 1/4" drives I stripped. These were still only half the speed I could get out of the steppers that came with a DOBII drive I had but still quite usefull.
I still have the test sheet I made and will attach it.
Barry
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Hi Barry,
Thank you for the list, it is a great compilation
I did some tests with those motors I have and the speeds I achieved are not great (~400steps/sec @ 12V), however, those motors will do with current Darren's firmware (and 16x slew rate) and with existing drivers.
To achieve faster slews, I will need different drivers (higher current-limited sources, to overcome coils inductance) anyway.