On Wed, Nov 18, 2020 at 12:02 PM Eric Keller <keller...@gmail.com> wrote:
> Gene, > How long were you in the room with the motor running before you left? I'm > curious how long you can leave one of these things running. > It is easy to calculate. What you need to know is the size of the water tank and how many watts your motor pulls. With a large enough water tank, you could run 24x7. Just to frame this, a basic water heater of the kind used for hot showers and dishwashing at home has a 30 gal tank and a 4,000 W heater. It can heat the water to "scolding hot" in just over 30 minutes. So using a 1,000W motor to heat a small bucket is kind of in that same scale. To run 24x7 you need to dump a lot of heat. When I was doing this I used a fan blowing over a tank with a 1x4 foot top opening and the heater was only 125W. It could run 24x7 and I'd only have to top off the tank now after a week > Eric Keller > Boalsburg, Pennsylvania > > > On Wed, Nov 18, 2020 at 10:34 AM Gene Heskett <ghesk...@shentel.net> > wrote: > > > Greetings all; > > > > Leaving it run at 4g's overnight wasn't quite the result I expected. > > > > Going out to check on it and work on the BS-1 project, I could feel the > > heat on my face from 3 feet away, but it was still humming along at > > 4g's. No smoke. But the hoses on top of the motor were melted, for > > about 3" away from the spigots on the motor. And the tank had lost 3 of > > its 4 gallons of water with no sign of where it went, nothing wet so it > > either came out as steam, or it melted the hoses quite early and its had > > time to dry. Shut it down. Tank is cold. Pump lost prime for lack of > > water at the intake. > > > > I think I can say that experiment was a failure. But the motor still runs > > whisper quiet. And it looks like I need to get another big coil of hose, > > or figure out how to pull at least 6" thru the cable chain to reach the > > motor with "good" hose again. Plenty of spare at the tank end of the > > run. Sigh... It, and the motor mounts, will have to await the arrival > > of the better motor. > > > > Cheers, Gene Heskett > > -- > > "There are four boxes to be used in defense of liberty: > > soap, ballot, jury, and ammo. Please use in that order." > > -Ed Howdershelt (Author) > > If we desire respect for the law, we must first make the law respectable. > > - Louis D. Brandeis > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
