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- The design, building, and use of engines, machines, and structures. For any engineering topics not applicable to the categories below.
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Jan16-12 Greg Bernhardt
You're just one click away from posting your homework help request! Click here to post.
May17-14 06:51 PM
0 2,709
A number of questions, particularly involving homework, often involve some basic engineering. In the US, the...
Nov22-13 02:02 PM
38 61,965
We always have threads on various pieces of the puzzle, but what I want here is for people to post a coherent plan of...
Aug13-14 11:01 PM
jim hardy
1,039 237,964
I overheard a discussion the other day and it correlated with something I saw on TV years ago. It was about "cold...
Jun13-03 06:48 AM
3 2,421
OK. Hopefully you guys can help me. I could do this off of just trial and error, but I would rather not have to re-cut...
Jul11-14 01:30 AM
1 1,913
hey all, i recently had an idea to combine the concepts of a magnetic bearing i.e. using the repulsion of magnets to...
Jul2-12 03:45 PM
44 14,246
I passed my statics course and am currently taking material stength course. The thing that has been on my head is...
Jun11-11 05:20 PM
3 3,548
I'm wondering if people can give their views on what the practical differences are, and emphasis given to the type of...
May21-05 01:20 PM
6 2,640
Recently, my hot water geyser wasn't heating water.. so I called up the electrical guy and he came to repair it. I...
Mar12-08 05:06 PM
3 3,834
I only have a BSME with a very small amount of work experience (I graduated recently). I'm hoping that there is a...
Mar30-11 05:17 PM
3 1,594
Dear all members, I just need anyone of you to verify my system and some equations I have worked out for my problem...
Aug1-13 03:33 AM
1 1,345
Hello everyone, as the thread title implies, I'm in a bit of a bind when it comes to understanding the Moment...
Nov14-12 01:30 AM
1 2,149
the last day of change of preference week is today and i have to select my course for uni. (Melbourne uni, australia)...
Dec18-06 02:40 AM
6 9,121
Hi, I am doing some undergraduate work in Sweden, and for one of my tests, I need to place a material at -40 to about...
Jun9-08 04:54 PM
3 2,609
Are there any program that be be used to read a .CAM file and pull measurements from the program. Where I work we...
Mar1-13 09:27 AM
2 930
I am working on a simple motor and I would love input or tips to increase the rpm on it. The motor is built by having...
Nov17-11 10:50 PM
6 3,141
I have been reading into some of the engineering behind the Wright Flyer. It's pretty astounding. These guys were...
Dec17-03 01:40 PM
1 1,506
Have any of you heard of the hydrosonic pump? It is an "over unity" device that actually works. It is said to...
Jun19-06 07:29 PM
6 30,067
i want to produce 1000 K/nm of torque using motors and gear , output rpm needed is 30 and 1000 k/ nm of torque 1)...
Apr17-14 07:26 PM
8 1,024
Why have guns been essentially the same mechanism since the invention of gunpowder? Has there been any improvement in...
May16-07 07:34 PM
9 2,884
i saw a hindi movie that had an end scene with a bus with a few passengers involved in a mishap and end up hanging out...
Jun4-08 10:49 AM
0 1,631
hey ppl, In a nutshell, need to come up with a 10mX2m foot bridge over a river made from steel and...
May22-10 09:12 PM
7 3,008
I need help finding a device that can generate a sustained arc while utilizing only a 12 volt power source. Does...
Sep11-10 07:39 PM
19 3,332
Ok, according to Wikipedia, Tetraoxygen forms at 20 GPa and turns into a metallic form at 96 GPa. Elsewhere on the web...
Apr6-06 07:15 AM
4 2,531
I want to use 24v to break 120v loads. I understand the logic for dc circuits but im not sure how to break 120v...
Dec23-11 12:45 PM
Ivan Seeking
6 5,547
I'm looking for 12 VDC (preferred) or 24 VDC electric motor that can output >2hp (preferred 3hp) and with gear...
Jun25-11 02:57 AM
20 23,488
Here is some basic information: Part A requires 23.34lb.ft. (31.644 Nm) of torque @ 3600 RPM to function. Part B...
Jan16-11 06:06 PM
3 3,517
hi I have no idea at all what the first moment and 2nd moment of area are, and how to calculate the centroid of an...
Apr5-07 07:10 AM
0 2,255
If I can to calculate the 1st and 2st moment of inertia of areas and volumes, I can compute for curves and surfaces...
Jan25-14 07:50 PM
2 567
Here is an interesting question that arose during some random things I was doing: If you have a 4" duct, and have TWO...
Dec3-07 11:09 PM
11 5,363
I want to put a hammock in my room but dont want to damage the walls from putting too much lateral pull on a 2X4 stud....
Jul8-12 09:52 PM
2 2,112
Hi All, Can anyone care to explain what are 2 pole 4 pole 6 pole 8 pole motors? What are the Asian Countries...
Jun26-11 12:47 AM
4 26,500
Hey, I just fnished med school and I have been conduction biomechanical research for the past 3 years now. I am...
Jul19-10 12:48 AM
14 2,488
Tan(x)=3 tan(x/2) solve where 0<x<2pi? sin3xcosx+cos3xsinx=1, where 0<x<2pi? tried a long time...
Oct19-09 01:09 PM
3 1,594 Here is the problem. I came up with two equations: Upper Lc: 21.75=k(Lo-Lcu) Lower...
Feb27-11 02:36 AM
1 1,571
\inthi all, I need just little bit of confirmation about what I'm doing. Normally I know how the stiffness...
Jul11-12 12:07 PM
1 1,162
what components will i need to build a 240volt inverter.
May18-08 02:06 PM
ray b
1 5,158
Anyone know where will i be able to get a 24VDC Electric Motor that can take up to a maximum of 500 kg load at a...
Nov4-10 10:54 PM
Ivan Seeking
3 3,017
Does anyone know a good free library to do Fourier Transforms (FFT or DFT). I know FFTW but I'm having some problems...
Dec2-10 08:41 AM
7 6,805
Does anyone know where I can find 3 Volt DC Motor Performance Graphs on the web? I'm looking for something like...
Mar30-05 08:05 PM
1 5,238
I would like to confirm the operation of a 3 wire RTD. The 3rd wire is a high impedence voltage measuring lead only...
Apr6-08 10:17 AM
0 14,576
Hello everyone, I am making a 3.4kJ railgun with the following specs: 30F 15V (therefore 450C) PowerAcousitk...
Oct21-10 05:56 PM
0 2,264
I have a double wall steel tank system, where the inner sealed tank is 300 gallons and the outer sealed tank is 600...
Aug22-08 08:37 AM
3 2,161

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