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Posted by SteveC68 | Sep 29, 2012 @ 09:28 AM | 3,044 Views
Here are a couple of pics of the EJF Viofan adapter to convert the older gas Viofan to electric. I'm not sure it is supposed to have this much play in it, but I've been in touch with Robert from EJF and he is going to let me know.

Posted by SteveC68 | Aug 23, 2011 @ 07:14 PM | 4,388 Views
Ok I just finished writing this one because I was sick and tired of waiting 1000+ seconds for the "cone" program to start up since I'm too cheap to pay for it.

Anyway this spreadsheet isn't as cool as the cone program, but it gives you the info you need to roll your own. All you need to input is the outside diameter of your fan, the diameter of your tailpipe, and the length of your tailpipe. NOTE: ALL DIMENSIONS SHOULD BE IN millimeters. The spreadsheet will work if you use inches or feet for that matter, but since most people use mm as the units of measure for EDF I figured I would stick with convention. But as long as all units are the same then the sheet works fine. Oh yeah, input in the blue fields in the upper left. Results are in the yellow fields.

Enjoy

Edit: I found an error in the formula. DOH Sorry about that to the 7 people that bothered to download the original spreadsheet. It's fixed now and has been verified.

# Files

Posted by SteveC68 | Dec 18, 2009 @ 12:16 PM | 7,800 Views
Here is a simple Excel spreadsheet that calculates FSA of a ducted fan. I see people ask how to calculate FSA a lot. This spreadsheet will give you 100% FSA down to 70% FSA in 5% increments. Only input the diameters of the fan shroud and the fan hub (green cells). The fan hub diameter should be the largest diameter of the hub as some fans have a pointed tip.

I have updated this spreadsheet. It now also calculates exhaust diameter at different percentages of FSA from 100% down to 70% in 5% steps. This is done for both a single exhaust outlet and a bifurcated (two outlets from one fan) exhaust.

# Files

Posted by SteveC68 | Dec 18, 2009 @ 09:52 AM | 4,716 Views
In response to all of the "yeah but they had to make the intake larger so it would fly better" and the "you wont even be able to see how ugly it looks when it's flying" people. I give you your new "Sabre".