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Has anybody heard of a variable muffler? Where in there is a floating baffle with some spring pre-load. My understanding is that at low throttle the spring keep the baffle "full closed" and like any regular muffler, and as throttle is increased, the increased flow would push the baffle open to...

Would you not be able to use a noteably smaller diesel engine versus it's gasoline equivalent? That alone should almost even the plain for the diesels "lower" HP to weight ration to the gasoline engine. Wouldn't it? Most new TDI diesels don't make any more noise than a conventional gasoline...

The PC is not a requirement to run. I simply wanted to create a simple user interface to make fine tuning of the program easier

Pat is right, I have seen a unit where there was a second fuel rail added with modified fuel injectors for use with propane. The system was set up that each fuel source was seperate all the way through to injection (storage, pumps, injectors) By toggling a switch you could choose the fuel of...

That is pretty much what I would like to accomplish. The mircocontroller will house and run it's own program. The PC is there more or less as a visual interface of the events taking place in the microcontroller. What i'm not sure about is: 1- will I have to write extra code on the...

cbarn24050 What is the resonance problem that you spoke of? Would it not be present regardless of leading or lagging p.f.?

I understand how and why power factor correction is used, but what I'm not sure of is what effect if any would there be for over correction? (using a larger Capacitor load bank than is required)

The processor will have it's own program running. The PC link that I would like to establish would be more of an 'overlord' taking a copy of the same I/O that the microcontroller will be seeing and display the information. I would also like to be able to send variable value changes back down to...

the OS will more than likely be win2k, or XP at a stretch. I just want to be able to read/write data in realtime. The other thing I was wondering about was if the serial port would be too slow, and be forced to use USB. Since I'm a relative "newbie" to programming and I think it might be a...

some VB and very limited C. But if learning another language is worth the trouble than so be it.

I am trying to create a user interface (gui) that will display information that is being sent to a microcontroller. I'm not clear on what language the interface should be coded in? I know that some languages are very resource intensive, but I don't know the who's who. I was hoping to be able...

I basicly want to monitor vacuum during the moulding process on several of our moulds. We use vacuum to help reduce the gas burns within the mould while plasticizing. I'm mainly interested in making sure that if there is no flow, or very little flow that there there would be some kind of...

Sorry, I guess I was just a tad vague. The vacuum source is a vacuum pump with a storage tank. Before the vacuum flows it would be at a level of about 20"Hg. the "gas" is just plain air (and what ever is floating in it) The vacuum is drawn through some channels, but is basicly drawing from...

I need to find a flow meter that will allow me to program a low and high setpoint window, and turn on an output if the flow is not within the setpoint window. The flow is quite small. Maybe about 3 CFM The cycle time is about 15 seconds. And did I mention that the flow to monitor is vacuum...

thanks all, I'll let you know how the board turns out

I would like to get a couple of prototype boards made up. Does anyone know of a place where I can get these knocked off for a reasonable price. The board is 3" x 3" single sided with about 150 holes

Could the initial "ignition" be from an external source? If you mounted a coil around the the end of the pipe outlet you could create a magnetic field that the object passes thru. Inside the projectile you could use a set of contacts either opened or closed by the field as it passes through it...

There used to be a piece of software on the internet called cool edit. It would allow you to edit all types of audio files and "rip" some of them into different formats. The software displayed the soundwaves as it played the file. And from there you could select a segment of the file and edit a...

Thanks, Rich. this is bang on. And my contoller is also a pic, so this eliminates a lot of work.

You can wash the tanker (I assume it's a large trailer) by hand with a pressure washer. Just be sure to use the right stuff when you wash. On occation i've been known to milk cows for some people I know, and they use a non foaming "milk soap" and an acid rinse to clean their lines and storage...