It is amazing how long the Atlas machines last. ?My bandsaw has been used in my shops since 1949! ?I am a boat builder so I cut only wood on it. ?The saw has had two sets of tires and a conversion to roller guides and that is all. The bearing are good as well. ?All in all the Atlas 12 inch band saw is a true winner as is the six inch lathe and the 12" drill press.
Jay Greer
Common Sense Boat & Tool Co.
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On Jan 6, 2019, at 10:50 AM, a_rodi2 <
a_rodi2@...> wrote:
Greetings group... while I have recently upgraded from my 1036 model ¡°d¡± (I think) atlas to a 12¡± (model?101.28990)... but with VFD discussion, I have this... an old bandsaw I repowered with a treadmill motor... the motor being 2 1/2 hp DC with the matching controller included on a Craigslist found treadmill. ?I replaced the slide POT with a rotary and revised the drive for really slow band speed.. I wonder if this could be done on a lathe..maybe with addition of a rpm readout ....(The guards, belt and motor are not shown)....
Al (newbie to the group but long time atlas user)
<image1.jpeg>Sent magically?
On Jan 6, 2019, at 10:27 AM, cwlathes <
carvelw@...> wrote:
Hi Raymond ,?
?
The VFD¡¯s that I am familiar with ( Hitachi and Yaskawa) , are current limited / protected ?. . .??
So if the motor attempts to draw more current than the VFD is capable of delivering , then it will reduce its voltage to limit the current to its maximum rating . . .??
So one wouldn¡¯t be able to get more than say 750 watts out of a 750watt VFD irrespective of the motor size as I understand it . . .?
Take care,?
?
Carvel?
?
?
Carvel:
You don't see any possibility of an over-current condition burning up the VFD? If that is a 1Hp motor and it is put under a heavy load the electrical demand in Watts (or joules if you want to get that deep) will still be there but the 3/4 Hp rated VFD will not be able to deliver so the current will increase.? No?
Raymond?
