Recent content by coreyh

Hi Cave Cat, A few things you need to define about your problem before selecting your pressure sensors: - what pressure range are you talking about? - what frequency are the fluctuations in the pressure? - what are their magnitude above the average pressure? These criteria will help you in...

Sounds like you need more than just a seal, but rather a mechanical part which holds the seal and also provides holes for feeding in material and supports the tube/furnace. Usually a seal is just a single part, like an 0-ring for example, which is inserted into a groove cut into a fixed...

What about milling off a bit of the block (or head) to increase the compression ratio? This should help you squeeze out a bit more power. Also, advancing the injecting timing could help as well. But i guess this would mean getting a different injection CAM, which could be tricky. Keep in...

I agree, DC motor is probably the simplest option in this case. As for sizing it, download this application from MAXON motors, pretty cool: http://www.maxonmotor.com/downloads.asp You could probably buy and entire system from them, although it will cost you;) But at least you should get an...

i guess your exam is over by now but if you are still "really stuck" on this problem I would suggest Googling "thermal transmittance" and i you'll get some pretty simple formulas to calculate this. I'm really not trying to be a smart *** here and if you are still stuck PM me and i'll send you...

All the syntax for COMSOL is taken from Matlab, so if you are familiar with the latter the former is pretty comfy. You can also send e-mails to help@comsol.com (or something like this) and they will tell you how to do stuff. There is also a forum on their website you can search, i often find...

This is a great site for learning about how commercial wind turbines work: http://www.windpower.org/en/tour/wtrb/electric.htm I would recommend spending some hours reading on this site before deciding on how to build your turbine. I think just hooking up a DC motor with and integrated...

Wow, confusing problem... Good job mentioning temperature, which is pretty much the most important consideration when it comes to seals. 200C is pretty reasonable for high temperature plastics, so you should have lots of options. I'm still a bit confused about the two blue dots. So these...

Eigenfrequency basically means the "characteristic" frequency. "Eigen" comes from German and means "own", so i guess "own-frequency" is more literal but sounds dumb. As for the Eigenfrequency of a camshaft in the context of vibration, i think this would refer to the rotational frequency at...

Hi Aviator, Judging from your speed requirements, 12mm in 0.5sec, which translates into quite a steep acceleration profile, i suspect a power-screw setup will be too slow. I would recommend looking at a linear drive instead. It will be more expensive, but you can get really fast dynamic...