Recent content by rythmnbls

I buy inconel 718 from http://www.onlinemetals.com Look under the Nickel / round rod section. Regards, Steve.

Sorry for the late reply, I'm just home from a sudden 10 day hospital stay. I don't see any reason to not use methane as a fuel. Gas turbines run on just about any hydrocarbon. The appropriate precautions for containing the methane would be the biggest drawback. I've seen a build of a 2:1...

Fabinho, The reason there are no nozzle drawings is I never drew them. There didn't seem much point in making nozzles until testing of the turbine section was completed. When I get the new turbine wheel and NGV completed I will start on the nozzles. Regards, Steve.

fabinho, Do you have a link to schematics and specifications of this sensor board ? There should not be any changes needed to the arduino side if this sensor board produces a TTL compatible +5v signal and has the equivolent magnetic sensitivity of the the original design. Regards, Steve.

Congrats on the successful build, and congrats on the POM title. Well deserved. Regards, Steve.

The JATO board is a good resource as well. http://jetandturbineowners.proboards.com/ Regards, Steve.

I had to back and look again to find R2, that's a big zoom factor ! Steve.

Look around the southern shore of Lake Eire. BTW, very nice drawing George. Regards, Steve.

That's just another bypass cap, 0.1uf, preferably a monolithic ceramic, but any cap will do. Regards, Steve.

Hi fabinho, Are you referring to the SS495 hall effect device ? If so perhaps this link will clear things up. http://www.digikey.com/catalog/en/partgroup/ss495-series/12446 My circuit uses the SS495A device. Any 10uf capacitor can be used, they are just bypass caps. I just prefer tantalum caps...

+1, I went with a counter weight, properly adjusted gibs and dial indicator. The z-axis dial on my X2 was .060" per turn and had about a whole turn of backlash, making the dial useless for measurement. Regards, Steve.

Yes, the RPM sensor is magnetic. The spinner nut has 2 rare earth magnets like these, http://www.kjmagnetics.com/proddetail.asp?prod=D31 The spinner nut was built using this as a guide. http://www.5bears.com/magnut.htm Regards, Steve.

Hi fabinho, Here are the schematics for the arduino board and for the RPM sensor. The arduino board The RPM Sensor board I'm not sure if the max6675 module is still available, but this is a replacement http://www.adafruit.com/products/269 The arduino code...

Hi fabinho, Thanks for your comment. The GR180 was not designed by me, the original designer is Gerald Rutten. The arduino project I used with my GR180 is not a FADEC, it is a combined tachometer, temperature guage and glowplug driver. I'd be happy to post schematics and the code if you're...

I use Blender 3D and PyCam for 3D tool paths on a LinuxCNC machine. Both apps are free downloads so It wont cost you to try them :) http://www.blender3d.org http://pycam.sourceforge.net/download.html Regards, Steve.