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one more thing, I don't know if it ac or dc, should that matter? The specs i have are from the company I bought the fan from, and not the motor, and that is partly why I have such limited information.

what is the power factor? Can I determine that, or is that a characteristic of the motor? If i can't determine it, can I estimate reasonably? This motor is ''small'', 0.5hp, 1725rpm, 120V/1ph/60hz used to run a small fan. Unfortunately, those are the only specs I have on the motor. cheers

If I have a 120V - single phase motor, is current simply equal to power/voltage?

Look into Danfoss controls.

Out of curiousity, why can the outside not be hardened?

mcguire, any idea on costs of 439?

I have been looking into switching from 304L to a cheaper alternative. I noticed in MetalMickey's thread, that it was suggested to switch to SS201, SS439, or SS430Ti. What type of applications would these materials work for? I am looking to use it on a conveyor used to move ash. The...

I am just learning femlab, and to do simple problems it's coming along well. but i was wondering if anyone knows a good website that has a list defining error messages? Or does anyone know if it is in one of the manuals? I have searched through them but haven't found anything. I am wondering...

Can anyone tell me what the error message "Solnum out of range -- Maximum value: 0" means, and how to correct this error?

I don't know if anyone can answer this question. But I was just curious if engine braking a car (manual transmission) has any negative effect on the motor, or gearbox?

try www.matweb.com, I think it's a great database

Can anyone tell me what physical factors play a role in abrasion resistance? I would think that hardness would play the most significant role, but is it the only deciding factor? I guess, maybe a low thermal conductivity to keep the material from heating up, and softening. Although, I don't...

I believe recrystallization starts at 727C for carbon steels. I hope metman agrees with me on this. I thought it could be read off the phase diagram of Fe-Fe3C.

Does anyone know how to calculate the thrust force acting on a bearing used for a screw conveyor?

Maybe I'm just not reading this right, but are you simply filling up the tank? If so, is it too difficult to put an escape valve on top just to be sure? Either way, the calculation does not seem to be too difficult. Constant temp, and amount of air, with a change in volume and pressure. I'm...

supaman79 I would recommend 'Introduction to Fluid Mechanics' by Fox/McDonald/Pritchard. I used it in the past and I thought it was quite good. I also used 'Intro to Fluids Mechanics' by smits. While some of it was good, i found the Fox/McDonald to be much better. good luck

makes sense....that's incredible thanks for the help everyone

Actually, I have another related question I think you guys can answer. If you are on the suction end of a duct, would the static pressure be negative? Is that possible?

Thanks for the help everyone. This has definitely cleared the mud. Cheers

Well I am glad to hear that. I was told to that I should get a pitot tube that ranges from 0-3.77inwc DP. Would I be correct in saying that this range should actually be 0-5inwc DP? What I am asking is the answer I get for total pressure considered to be the differential pressure? I...