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  • Users: TheRocketScientist
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  1. TheRocketScientist

    Lithium Iron Phosphate Battery: 200 mile automobile range?

    Does this look legit to anyone? I smell DEEP AROMA of Bullsnort. http://www.evperformancewarehouse.com/index2.html and http://www.usunitedenergysystems.com/index2.html Lithium Iron Phosphate (LiFePO 4) batteries?? "Our SOLARIS EV® All Electric Sports Car Range: 200 to 300 Mile Per Charge...
  2. TheRocketScientist

    240V AC Motor Fail to Start counter/ 120V lacks N wire

    I have an AC motor of about 1.5HP, run with 240V AC single phase. The motor is about 300 ft from the controller, which switches only one leg of the 240V. At the motor, then, I have a ground wire, one leg always hot, and one switched line. Typically on/off abut 60/40% on a 5-minute total cycle...
  3. TheRocketScientist

    TEK screws- seeking #2 drill tip exact specs

    I am looking for exact specifications for the #2 drill tip of a TEK type self drilling screw. I am securing a plastic block to 0.090" thick aluminum extrusion with 3/4" long stainless steel #10 TEK type screws. Currently using #10-16 screws with a #2 drill tip, which strip at about 70-80 in-lbs...
  4. TheRocketScientist

    remote 240V AC site has no ground wire

    Test wall outside the building was wired by others before me. From the building come 5 wires- 3 are L1 L2 L3 of 3-phase 240V AC, a 4th wire serves as a Neutral for the 240V AC which gives 125V AC off 2 legs and 210V AC off the 3rd "crazy" leg. These come from a known breaker panel in the...
  5. TheRocketScientist

    Control bus- can a loop be used?

    Suppose one wishes to control a series of electric motors via a control bus such as serial, ethernet, RS232, whatever... can these devices be arranged in a loop? Think of an electric fence around a field... with the control signal being sent out both directions down the fence... each post...
  6. TheRocketScientist

    575V 60 Hz 3-ph 1HP motor- any use for it?

    I have a nice new 3-phase motor. However, because it's 3-phase, it has limited use around the house. Also, it's 575V [and appears to not be re-wireable for other voltages]. Rated 1HP. Any use for this thing? Dummy motor for 1ph => 3ph converter? I guess it can be run on 480V, but torque will...
  7. TheRocketScientist

    C shaped spring

    I have a vertical panel which turns about a vertical axis somewhat less than 90 degrees slowly from one position to another. I am envisioning a spring, shaped something like the letter "C", laid horizontally, perpendicular to the panel's vertical axis of rotation. At each end of the C, a...

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