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Hi group, i`m a mechanical engineer, i'm beginning (very early stage!)to develop a university project to create FEA software, only for academic purposes. i only will develop the core, the processor. My question is, there is a free software for the design and load definition stage, and for the...

Hello, I need to model a cilinder of 80 mm with an 60 mm concentrical hole, in the top of this, i need to create a sinusoidal wave, I have done a example in AutoCAD, you can see the attached figure, but this is only made with circular fillets, only for illustration proposits. I need a real...

The wheels turn against what resistance? ( i'dont know the resistance, but if it can help, it run into a pvc tube, it is under sea water, and is expected to find mud and seaweeds, i dont know the friction coeficients) The wheels are solid, neumatic, soft, hard? that influences the power...

Hi group, i need to select a motor to drive the sistem shown in the next figure 1) it is only a part, not all the sistem. it run into a 200 mm diameter pvc tube, under 25 m of sea water. how can i determine the required torque?, and power?, i need it runs at 100 RPM. i don´t know the...

hi, somebody can tell me where can i find a REAL beginner databases tutorial in vb? i hope that nobody tell me 'use google' thanks

how can i activate a small motor via USB with VB?, i need to develop a software to deaf and handycap person, when Windows alert from a warning or error, the small motor must vibrate and the user feel the vibration. regards!

ok. but, where can i found how to use this API?. can somebody tell me more about this?

ok, theres another solution?. not all the pc are running win xp or win2000. the most of them are running windows 98 oo milenium.

hi group, i need to develop a software to manage a public printer running in windows, the details are: 1. users can print only 100 pages by week 2. the software registers the amount of printed pages by each user 3. if the user exceed 100 pages the software reject the print command. can i do...

hi group i need to design a differential gear from scratch, i need to get a reduction from 25:1. it will be cased on a 3cm x 5cm x 4cm box regards

thanks, please tell me more about ...: "The wheels are on external shafts and magnetically coupled to the inside motor shafts using permanent magnets across a non-magnetic barrier.." can you tell me about those kind of motors?

i'm a mechanical engineer who are developing a inner pipe inspection robot, it will work under 30 meters, in sea water. i need to make the shaft of the wheel waterproof, so the sea water don't let enter to the electronical system. the shaft is near 1 cm diamenter. please help me

thanks about the tips, but remember, the motor that i asking about are 'toy motors' 12V, very small, to a robot of 10 inches. oliveros

thanks, i need to get the maximum data about the motor. i need to measure the maximum torque and in all the operating range

Users, i have a small motor (like those from robot toys) i need to measure the torque, but i don`t have instrumentation, do you know what can i do? regards bernardo

pat, thanks, your answer in eng-tips is very helpful. but i'm stll have some question, where can i learn about magnetic drive?. is first time that i hear this kind of drives. if you can help me. regards

Users, i'm developing a inner pipes inspection robot, it will work inside 200 mm diameter pipes, and those pipes are under sea water, at 30 m depth. it must be four wheel drive, but i need design the water proof system. All the motors will be inside the case, and the controls and electronics...

the user should can user the mouse to rotate or do zoom, like a real virtual model. i don`t include a gif o jpg file, this must be 'live'. thanx

thanks cajun, but the ms chart control only draw 2d pie graphics. if you know how to use it to make 3D pie graphics, please tell me how bye!

how can i create a 3D pie graphic in visual basic 6?