Poor Man's Wind Tunnel

[Bob Axsom]

http://www.youtube.com/results?searc...ttleupsvx&aq=f

linkhttp://www.youtube.com/results?search_query=throttleupsvx&aq=f I tried to copy it here with link in front to see if I can prevent the auto contraction. I posted this link earlier for the race video but when you get to the site Russell Sherwood has several videos including one called Poor Man's Wind Tunnel. The other post has been deleted so you can also look at the Grace Flight Air Race video through this link. I have seen his plane at Sherman's North Texas Regional on 10-2-2010 for the Grace Flight Cross Country Air Race - the man's work is exceptional! There is something for everyone to learn from this man.

Bob Axsom

[Alex]

Bob-- That link didn't work for me. I searched for Poor Man's Wind Tunnel and got this video. Is this the right one?

http://www.youtube.com/watch?v=njir235mVuI

[rv6ejguy]

Russell has been around for a long time experimenting with the EG33 Subaru and has a very successful and good cooling airplane. He is a smart guy and this was a great idea, I've done similar things for testing rad and NACA ducts. You can learn a great deal on the ground which saves a lot of cutting on the airplane.

Guide vanes are magic in ducts and I just wonder why so many people don't see this and keep struggling with poor designs which don't work.

Russell recently set some decent speeds running very conservatively with his Glassair in a race showing what a good auto conversion can do against traditional engines. http://www.sportairrace.org/ Look at Sulpher Springs 130 results.

For those contemplating liquid cooled engines in an RV, a lot can be learned from Russell's experiments and finished duct design.

[Bob Axsom]

Yes that is it. Here is a photo I took of his airplane on the ramp before the race last weekend. You can see the door open at the rear of the belly scoop. I have been a little slow on appreciating this fellow's work but in the couple of races he has flown he is blowing the Sprint class. He may be a class rule changer in the making. The front of the plane flows out from the spinner with no common air intakes there. It is a plain work in process looking plane so the tendency is to just casually scan it - no more, next time I will photograph the heck out of it.

Bob Axsom