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  1. My guess is the motor shaft is 4mm diameter and...

    My guess is the motor shaft is 4mm diameter and it is only mushroomed to hold the washer on, which keeps the belt on the cog pulley, which is press fit.

    You can pry the washer off. Clean up the...
  2. a combination of both could be better, given that...

    a combination of both could be better, given that transformers are cheap.

    use an auto transformer in series with a capacitor to boost the voltage of an idler, rather than capacitors only.
  3. take the chuck apart and you may find bolts on...

    take the chuck apart and you may find bolts on the inside holding the back-plate on.

    find or grind a close fitting screw driver and give the screws a good whack with a hammer before stripping the...
  4. Maybe, but if it only has to add 120vac and pass...

    Maybe, but if it only has to add 120vac and pass 12 amps for a 5 hp motor (240v operation) then its plausibly a 5hp box. That would be 1.5 kw and is plausible for a TX that size. (With 120C...
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    A single click is fine, that is the centrifugal...

    A single click is fine, that is the centrifugal switch working.

    If the notor jerks, its because voltage is stored in the start cap and when the switch reconnects the energy is dumped back into...
  6. Thought occurs to me that forcing current into...

    Thought occurs to me that forcing current into the third leg at a 90 degree phase shift with a capacitor in series with a voltage source which is in phase with the other coil's supply... Is not what...
  7. i did a rather crude experiment and discovered...

    i did a rather crude experiment and discovered that the rotor slows down far less than the slip that would be expected from a mechanical load,








    anyhow, from my experiment regarding a...
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    Old motors are higher fla amps, higher core...

    Old motors are higher fla amps, higher core losses and lower power factor.

    If he has a high efficiency new motor it will need less capacitance.
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    now that you explain that, that explains how the...

    now that you explain that, that explains how the servos worked on the EA-6b antenna positioning systems i worked on in the usmc in 2008. they were 2 phase 400hz induction motor with a high ratio gear...
  10. Try reconnecting the motor for delta and run it...

    Try reconnecting the motor for delta and run it on 240 and see if it produces enough torqe for you.
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    my brother was on a submarine for a while and the...

    my brother was on a submarine for a while and the microwaves would all get magnetron replacements before deplyment and they would noticably drop in power output. far as i know their decay rate is due...
  12. so fundamentally an electric solenoid can only...

    so fundamentally an electric solenoid can only exert a maximum force of about 100 psi due to the saturation flux density of 2T, and the practical size of the coil needed to get low losses at that...
  13. A dc permanent magnet motor combined with a...

    A dc permanent magnet motor combined with a ballscrew could provide the force needed to retract a spring loaded brake shoe or pad. You would have to ensure the rubber bellows or mechanical seals...
  14. I meant the total amount of co2 created from the...

    I meant the total amount of co2 created from the silicon that came out of the ground to the ups truck delivery guys' lunch.

    Money and energy is fungible.

    Anyhow my point was minimum 5 year...
  15. you paid 60 cents a watt right? so that's 240$...

    you paid 60 cents a watt right? so that's 240$ and at minimum you can figure 2400 pounds of co2 released to get that panel delivered to your door if it lasts 30 years it will pay for itself for sure....
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    I would guess it is used for measuring the area...

    I would guess it is used for measuring the area of an arc. The far right is held in a fixed location and the dial is worm gear driven from the roller which rotates as you drag it across your drawing...
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    more robust motor, might have solid copper bars...

    more robust motor, might have solid copper bars in the armature = twice the amount of copper in the rotor as does a dc motor, so higher power density by default, lower losses, no energy robbing...
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    if you burn out the elements trying to get it...

    if you burn out the elements trying to get it past 2000F then buy kanthal A-1 or similar nichrome wire and go for a larger gauge and wind them tighter.
    this will increase the surface area of the...
  19. You could gash a crude spur gear (you could even...

    You could gash a crude spur gear (you could even try to cut the teeth out on a bandsaw, as close as you can to manually scribed lines) and then use the hob to drive it but you would end up with a...
  20. that doesn't look forged to me.. looks like cast...

    that doesn't look forged to me.. looks like cast steel with the flash line ground off.
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    housing booms.. and the hype of nuclear power...

    housing booms.. and the hype of nuclear power being "too cheap to meter"

    of course you needed heat pumps in the south, for air conditioning.
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    banned in Bellingham, washington state too, soon...

    banned in Bellingham, washington state too, soon if not already.

    the working theory is that its less carbon emissions and slightly cheaper to heat with a heat pump via a 50% efficient combined...
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    you can use a 1500 watt space heater which draws...

    you can use a 1500 watt space heater which draws 12 amps, it should trip the breaker.. not immediately but.. tens of minutes later.
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    for only 10 feet if you want to increase the life...

    for only 10 feet if you want to increase the life of the motor. (statistically, there is no guarantee.). buy a cheap dv/dt filter and install it at the motor. its a simple RC filter. it will do...
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    i edited my post after you replied.

    i edited my post after you replied.
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