Recent content by otlski

First, success. I tested by providing a direct ground to the motor frame and everything worked fine. The voltage on the motor frame went from 90 VAC ungrounded to 30 mVAC with a ground. For posterity's sake... To get there, I snuck up on it. I replaced the 3 ohm inline-ground resistor with a...

Thanks for the detailed reply Peter. No option to go to 240 VAC. The motor is VFD rated. I will move forward on some of your suggestions.

No megger No other motor of known or unknown goodness!

Americonian VFD Chinesium motor

Thanks Cal, I will investigate if the jumpers allow me to change the frequency.

I am converting a floor standing drill press to variable speed. I bought a KB VFD and a 1 hp, 3 phase motor. The VFD takes a single phase 120 VAC input and produces the 3 phase output. The KB is old school, no keypad programming, instead is a simple speed knob and jumper wire configuration...

I don't know how true or correlated all this is but local lore is that early on, the epicenter of Lyme disease in the world was in Old Lyme Connecticut. Old Lyme is just across from Plum Island in Long Island Sound. Plum Island was a US government biological research facility.

I have interacted with AI in a few ways. Before getting into that, let me say that at this point I would not trust AI to opine or report on any controversial topic. That said, doing such was my first real interaction. At the beginning of the Ukraine Russia war I chatted with an AI asking its...

We have several types and use one all the time. Chicken or veal parmigiana are fork-cuttable tender. Other lightly breaded chicken fillets with a salad as summer meal. Pound out a whole pork tenderloin into a thin sheet to stuff and roll up with spinach, onions, and mushrooms. Also, helps...

We used epoxy anchor kits at Cape Kennedy to secure equipment in the old Shuttle processing facility. The concrete floor was allegedly 10 inches thick. No wonder too, our hammer drill went into it way faster than it ever should have. It was like hardened sand. I see McMaster has some but I...

So it seems your main concern is that your decretive concrete is not say 3000 psi but something weaker? Correct? Otherwise, the load rating would be valid and you would not have to worry. Two alternatives perhaps. One, use epoxy anchors to spread the shear load more intimately. Two, go up...

I believe that there is a menu setting to co-sight the two cameras. This, from my memory a few years back.

Ion engines cannot lift a launch vehicle out of earth's gravity well: the thrust is too low. They would be very suitable for a transfer of crew while in orbit, then go from there.

If you buy a side by side with a heated cab and a plow, you will have a mild winter. This works better than all of them.

In Connecticut. Surveyed a 600 foot property line dispute with neighbor. Located six out of twelve pins on 12.5 acres heavily wooded, steep rocky terrain, with swamps and a brook. Produced stamped drawing. Took surveyor 9 months to show up (neighbor picked them). Cost $2500. They found in...