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Old Apr 03, 2013, 07:14 PM
WBE
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Controline in the desert

Made it out to one of the alternate flying sites this morning at dawn. This used to be Bill Bennetts private estate. It's at the very south end of the Las Vegas Strip, about 20 acres complete with an 800' RC runway. The property is in ruins now, owned by investors and used for overflow parking whenever there's a big event at the Southpoint casino. This place must have been great during it's heyday.
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Old Apr 03, 2013, 07:16 PM
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Another pic
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Old Apr 03, 2013, 07:17 PM
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Another
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Old Apr 03, 2013, 07:19 PM
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High tech stooge
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Old Apr 03, 2013, 11:58 PM
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Great stooge. I do about the same thing with three 12" stainless steel shishkabob skewers, two in the ground and one through the loop in the wire tail skid.
Just don't let that cord get wrapped around your ankles and tie your feet together while you're turning circles. Don't ask me how I know about that.

I bet that fine desert sand is hell on your engines.
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Old Apr 04, 2013, 05:08 PM
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Nice Stunter Bill! You are the man! A true modeler.

Shawn
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Old Apr 04, 2013, 08:11 PM
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Hi Shawn, hope all is well with you and Jaime. The plan this year is to work hard at one event and see what happens. This field is 15 minutes from the house. I figure I can sneak in a few flights 3 or 4 mornings a week for practice.

Rusty, yes sucking in dirt is a concern. I'm using an air filter and that piece of carpeting for the time prior to launch. We'll see how that works.

Here's a video of one of the flights. Plane is kind of hard to see but the maneuvers can be seen, mostly.
F2B Flight #6 April 2013 (6 min 36 sec)
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Old Apr 04, 2013, 08:56 PM
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Good job, you had it needled just right. What engine is that?
I've been a 1/2A freestyle redneck speed stunter for a while, but doing the stunts all wrong. I'm hoping to fly more like that this Summer with my Shoestring &Thunder Tiger Pro 25. I've only got the maiden flown so far. It will be my first larger plane. Luckily I have grass.
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Old Apr 04, 2013, 09:31 PM
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Thanks Rusty, that's a stock Super Tigre G51 (controline version, I think it's got a different sleeve than the RC version). If I remember correctly a couple extra head gaskets were installed to decompress it a little. I took out the stock restrictor(the one with the spraybar going through the center) and replaced it with one purchased from Aeroproducts (Randy Smith). Can't remember the size but if anyone is interested just let me know and I'll measure it. Four layers of nylon stocking material over the intake held on with an O-ring (you can add or subtract layers to adjust power/running characteristics). Enya #3 or O.S. type F plug (hot) and a cleaned up Zinger 12-5 prop (I sharpen the leading ang trailing edges and thinned it a little and rounded the tips). 10% nitro 23% all castor fuel

The only complaint I have regarding the run is that when it breaks into a 2-stroke on outside maneuvers it will stay there, watch the 3 outside loops. I've never been able to adjust that out using all the usual remedies so I just live with it.

Bill
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Old Apr 04, 2013, 11:59 PM
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I noticed it did stay in 2 stroke for a while a couple of times. I'm new to this, so I only know what I've read. I have a Thunder Tiger Pro 25 on my 30 ounce Shoestring, with a Super Tigre CL NV on it. I'm told not to expect it to do a proper 4-2-4 but just to run it with a wet 2. I read that the Fox flyers adjust castor content to do the final fine tune on their 2-4 break. I guess raising the castor% cools the engine to help keep it from staying lean.

I'm hoping to get a second shot at a maiden this Sunday. I tried a couple of weeks ago but couldn't interest anyone in launching except one guy. It only ran for about 45 seconds and I didn't learn much. I had it too lean and it sputtered in the loops. But they were identical inside and out, and it reacted to control input the same inverted as upright. When I landed the dude was gone, back to play with his RC ARF. I'm taking a stooge this time.

Rusty
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Old Apr 08, 2013, 07:15 PM
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Bill that is a proper model.

I took a close look at your model and I noticed a few things.
Motor runs faster inverted. The fix is simple, lower the tank, cut plywood 1/32 and 1/16 shims that go on top of the tank and lower it till the motor runs even. It will take a few flights. You can go at it with half fuel tank load and just check the run. You do not need to go full flight to verify it.
Also the motor hesitates a little from 4 to 2. Get some of your spear props cut down 1/8 in increments and make one 11.875x5 another 11.75x5 and see if it improves. But since it was so rich upside and lean inverted the tank relocation may bring it back to normal. Anyhow it is good to have it in the tool box for a hot day when the motor does not make enough power.
Corners: A little soft. I hope you have an adjustable handle. Add a little tail weight and see how it responds. It should be almost effortless in the corner and if it falls outside your flying style the close the spacing to adjust for it.
Nice flight consistent with good maneuvers. Make your life easier in the Hourglass climb steeper shorter top watch the 3rd corner and do not overdue it that way the pull out is easier when you turn 120 degrees opposed to 135.
Good Luck
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Old Apr 08, 2013, 07:29 PM
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As for the dirt my answer is pantyhose or an air filter. Pantyhose with an o ring on top will do fine. DO not tell your better half I said so. You steal her pantyhose you are on your own.
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Old Apr 08, 2013, 09:01 PM
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Traian, thank you for the constructive criticism, that's exactly why I made the video. Didn't know about trimming the prop to fine-tune the break, excellent tip.

I am using a cleaned up Zinger 12-5 only because my favorite prop is no longer being made (12.5-4 Gator 2 blade). The Gator prop is MUCH better on this engine. We sure do miss you at the Whittier contests.

Bill
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Old Apr 09, 2013, 11:13 AM
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Bill I wish I was there having some fun. But the Commu…. state of CA does not appeal to me. I am glad you moved to Nevada.
One day I was traveling through Chicago and as usual I stopped by the Shamburg across from the Woodfield Mall flying club field where I met two old friends I barely recognized. They were getting ready, working on their NATS ships. As usual when they saw me with nothing to fly they offered, hey Traian you want to fly? Followed by the, what do you think about it. And I was honest and I said it was not turning. The plane would not corner to the point you had to pull out so early a square looked like a loop and I can nurse any model around its shortcomings, I flew some of their models the whole pattern and they told me that, they did not know it could do it to begin with, but that is another story. So I explained him about my flying stile and preference.

What I like is to push the CG back to help the corner ability. So on to adding weight on the tail. We added a piece of tip weight with tape to the tail and it started to come alive. Then there come the second piece of weight on the tail and it got better so we kept pushing it and it got to the point where it was turning so easy that we had to close the spacing on the handle to return the response in the proper place. After that it was the tightest cornering model on the field and it just turned and was nice and clean. Now if you go too far it starts to hunt and it is lighter on the top. Also as the CG goes back reassess the lead out position. Now keep in mind that this model was on the heavy side and we had to go there. A relatively light model you may want to bias the CG more forward but even then not too much. I still think optimum is toward the back. Rear CG equals less deflection on flying surfaces which equals to more speed on exit thus the energy is retained to climb and you can slow thing down a bit more which means even tighter corner yet. You see the benefits here?
About motor run and props. Pitch is speed. Diameter is load. Not enough load the motor goes from 4 to 2 and does not cycle back to 4 till you go back to level flight. Too much load and it struggles to go to 2. Maybe up high in the overhead and perhaps top of hourglass or clover it may break a bit but that is about it. On hot days or temperature swing from morning to afternoon (desert hint) you do not make as much power also changes the game so it is good to have smaller props.
1 Shim the tank. Short flights
2 Adjust motor run prop.
3 Play with tail weight
4 Make another video
I expect to see a completly different animal.
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