stunthanger.com
News:
   
 
 
*
Welcome, Guest. Please login or register. July 23, 2014, 10:06:51 PM


Login with username, password and session length



Pages: 1 2 [3] 4 5 ... 10
 21 
 on: Today at 06:52:01 PM 
Started by Robert Zambelli - Last post by Robert Zambelli
A few years back, I built a three-engine experimental stunt plane. Just out of curiosity, nothing else.
I flew it back then, had some issues. Corrected the problems but lost interest.

Anyhow, I did a flight last week just to see how it flew and what trim it might need.
Turn outs, it's a bit nose heavy but it didn't do too badly.
I'm not all that pleased with the three Surpass 26s - very inconsistent.
Three SAITO 30s will be in place soon.

   For your entertainment:     https://www.youtube.com/watch?v=gZG35VGjBY0&feature=youtu.be

   Bob Z.

 22 
 on: Today at 06:41:18 PM 
Started by Robert Zambelli - Last post by De Hill
Wild Bill Netzeband tested the Aero .35 in MAN a long time ago. His engine broke a rod after just a few runs.
The rod had a built in stress riser and failed there.

 23 
 on: Today at 06:35:14 PM 
Started by Andrew Saunders - Last post by Andrew Saunders
What kind of  hardware is supplied in the Brodak Legacy ARF? What materials is the haardware made of such as the bell crank and the pushrods?

 24 
 on: Today at 06:31:46 PM 
Started by Robert Zambelli - Last post by Brian Hampton
There are 3 engine test reports on the Aero in my collection of engine tests at http://sceptreflight.net/Model%20Engine%20Tests/Index.html

 25 
 on: Today at 06:17:28 PM 
Started by Robert Zambelli - Last post by De Hill
Hi Bob,

It's worth a lot of money to a collector.

 26 
 on: Today at 06:03:53 PM 
Started by Tim Wescott - Last post by Trostle
It happened that we went flying this evening...Pete Ferguson, newbie Kris Millard (40 years since last CL flight) and myself. I flew 3 flights and tried the shutoff loop per Robert's suggestion, with nothing positive to report. Big loop. Didn't seem to faze it at all. Waited one lap, did big loop, keep going. Next flight, I tried the loop at first downwind side after rpm increase...nothing. If I wait 2 laps, it'll quit...but it would have quit anyway, so can't see it's worth the risk, is it? 

I think the size and shape of the clunk is a factor. For those tempted to use a sintered bronze filter/clunk thing...I see no way they can work well for our application. When any part of it gets uncovered, the engine will suck air and not fuel.  I suspect it would tend to not shutoff cleanly, but with lots of burping and belching. I think a small & heavy clunk should be best. While it's tempting to throw some technology at it with a tungsten clunk....but......  naaaah!  Hoff Steve


The loop cut off works for me.  I use metal uniflow tanks, no clunks, and can normally tell when the tank is nearing empty.  A single loop will normally cut the engine.  Sometimes, it will take two consecutive inside loops to do the trick.  I do not know about the clunk tanks.  If you know your equipment, there is no risk doing the inside loop cut off.

Keitih

 27 
 on: Today at 05:57:32 PM 
Started by Robert Storick - Last post by Trostle
I've looked at stuff like full-scale aerobatics scoring methods.  Folks seem to think that the method we use measures correctness.  I'm not so sure, and I haven't seen any convincing statistical justification of it.  Other sports use it, so you'd think somebody would have written a scholarly paper sometime.  I would be interested in discussing the math after August.

Howard,

I am not arguing with you or anybody else here.  George Buffalano developed a methodology for our stunt contests based on the program used for full scale aerobatics.  Bob Baron was pushing hard for this.  It is based on normalizing scores by each judge for each maneuver.  The system can detect incorrect scoring by individual judges and to some degree, bias, and can offer a ranking of the judges. George performed analyses for the CIAM after several World Championships using his program.  On my recommendation and urging from Bob Baron, George wrote a paper in Stunt News several years ago that presented this concept.  I wrote an introduction for George on that article.  The article received absolutely zero response from the PAMPA membership.  I made reference to that article and when it was published on one of these forums a year or so ago and again, zero response.

One characteristic of this program, as I understand it, is that no rankings or scores are available until all of the flights are completed, the scores entered into the computer, the computer does its thing, and then the final scores are printed and the rankings of the pilots are available.  I do not know if our event is ready for that process.

The full scale aerobatic community has embraced this program as bias in the international aerobatic judging community was previously causing considerable strife and dissention to the point of eliminating the international program.

Keith


 28 
 on: Today at 05:35:49 PM 
Started by peabody - Last post by Mike Keville
Send your original message to 'Car and Driver' and/or 'Hot Rod' magazines.

 29 
 on: Today at 05:30:35 PM 
Started by Shug Emery - Last post by Douglas Ames
I'm dizzy! I think i'm gonig to be sick... 

Neat video!

 30 
 on: Today at 05:08:32 PM 
Started by Shug Emery - Last post by Paul Taylor
That was way kewl Shug!

My favorite part was the landing. Quite like a fancy feast stove.  Layingdown

Nice how you parked right in front of the camera.

Can you show how you mounted the camera on the wing?


PS - still waiting on the tour of the nut hut.  Hoff

Pages: 1 2 [3] 4 5 ... 10

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2013, Simple Machines

Valid XHTML 1.0! Valid CSS! Dilber MC Theme by HarzeM