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Old Nov 27, 2004, 04:28 PM
Evil Plane Doer
jskrebs's Avatar
Westport, Pennsylvania, United States
Joined Dec 2002
1,687 Posts
Yeeeeeeeee Haaaaaaaaaa!!!!

Maiden went very well, plane flys awsome with no bad manners. Even managed my first respectable Hover and torque roll.

The CF rods I installed minimized the cold induced twist to a very minor amount, couple clicks of aileron trim and straight as an arrow.

Feather recievers stink, glitching all over the place Berg 4 is in the mail
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Old Dec 06, 2004, 05:17 PM
Chillin till SEFF
bildo baggins's Avatar
Warner Robins, GA
Joined Aug 2003
14,731 Posts
Jeff - I may be pulling the Westport 17T outa the G-Nat and putting it in a Slick or something very similar. Will this motor do well on a plane of this size with a 2 cell and 8x4 HD possibly?
Any word on why the depron warps like that in the cold. I have very little in the way of indoor venues and have never experienced that warping phenomena
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Old Dec 06, 2004, 05:37 PM
Evil Plane Doer
jskrebs's Avatar
Westport, Pennsylvania, United States
Joined Dec 2002
1,687 Posts
Your 17T will work in a Slick on 2S with an 8.4 or GWS 9x5 HD prop, you will also need the IPS stick adaptors that Randy sells for 3/8" motor tube.

The thin CF rods I used cured the warping issue. The SLICK is very lightweight, mine is 5.5 oz AUW. The wing is 2mm Depron with CF leading and trailing edges. I suspect the Depron and CF have different thermal expansion rates and as such interact at a dramatic tempurature differential and cause the warp. Randy is working on a Kevlar thread update currently. I say it's no big issue as you could very easily add some spider wire, CF rods, Kevlar to reinforce the airframe for cold weather operations. Makes the aerobatics stiffer/Sharper anyway! I have a short vid I made at 35 degrees F. If randy says it's suitable for public viewing I will post it.
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Old Dec 06, 2004, 07:14 PM
www.M-A-E.com
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Lilburn, GA, USA
Joined Dec 2000
1,175 Posts
Hey Guys -

The video is fine to use, Jeff. Go ahead and post it. Pretty agile flying in what appears to be... uhh... constrained by trees

The wing is supposed to be 3mm depron. Maybe Jeff's was a little on the thin side, as it does vary some. I agree that a difference in thermal expansion properties is causing the problem. Something that blows my mind is that a Canadian customer is claiming his wing stays straight during cold weather flying

Anyway, I suppose that several "fixes" will work. I'm looking for something that's light-weight, cheap, and readily available. Dental floss is high on the list

Randy
Model Airplane Engineering
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Old Dec 06, 2004, 07:58 PM
Evil Plane Doer
jskrebs's Avatar
Westport, Pennsylvania, United States
Joined Dec 2002
1,687 Posts
I'll up load in a bit

The area is constrained by trees, pretty much a baseball diamond sized field surrounded by 60'ers. I am working on my 3D routine so I kept it low instead of soaring way above the treetops. My 3D routine needs a lot of work. My photographer kept egging me to buzz her so she could get closeups and in doing so I clipped a tree and spun her in almost hitting the camera.

Glide dental floss is really strong, but made of teflon so it's hard to glue.
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Old Dec 06, 2004, 08:06 PM
Chillin till SEFF
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Warner Robins, GA
Joined Aug 2003
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Camera? What about the photographer? She came out OK I hope. Who's gonna wind motors if you off the help?
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Old Dec 06, 2004, 09:07 PM
Evil Plane Doer
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Westport, Pennsylvania, United States
Joined Dec 2002
1,687 Posts
Not to Worry, Not to worry, the Camera is OK, and her hair will grow back

She has been promoted to magnet installer.
Does a nice job cept for the 10 she did all positive.
Made some awsome refrigerator magnets

Video

Also added a link and a real nice SLICK picture on my CDR motor web page
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Old Dec 07, 2004, 01:07 PM
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USA, NY, Brookhaven
Joined Mar 2003
1,526 Posts
Nice video! I liked the end the best!!
Rickc
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Old Dec 07, 2004, 05:27 PM
Evil Plane Doer
jskrebs's Avatar
Westport, Pennsylvania, United States
Joined Dec 2002
1,687 Posts
Quote:
I liked the end the best!!
That's a new 3D manuver called the "Duck and Run"

Note - no one was harmed in the making of this video
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Old Dec 07, 2004, 05:43 PM
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USA, NY, Brookhaven
Joined Mar 2003
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Quote:
Originally Posted by jskrebs
That's a new 3D manuver called the "Duck and Run"
That's just funny! LOL
Those trees make your house look tinny!

Rickc
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Old Dec 07, 2004, 05:57 PM
Evil Plane Doer
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Westport, Pennsylvania, United States
Joined Dec 2002
1,687 Posts
That's not my house. That's a deer camp, but it has a slightly larger yard than I do

Down below is my backyard
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Old Dec 16, 2004, 06:28 PM
Chillin till SEFF
bildo baggins's Avatar
Warner Robins, GA
Joined Aug 2003
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Just got back from my first daylight flight with the 17T and 8040 HD prop on my Mini 3DX. Really like the lighter wing loading with your 17T as opposed to the big angry Himax I had on it. More 3D now and less rocket ship action. Floats around real nice and has plenty of umph to toss her around the sky real graceful like. All this with a big heavy TP 1320 on it to. Will get smaller batteries for Christmas hopefully. May try the 9050 since the motor comes down really cool after considerable hanging on prop and high alpha stuff and I'd like to see if I can get a bit more on the punch out. Anyway I did a stress test on the Westport 17T at the end of a maneuver very similar to the last few seconds of your video. Almost direct impact on the shaft and still purrs like before.

Bill
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Old Dec 16, 2004, 10:54 PM
Evil Plane Doer
jskrebs's Avatar
Westport, Pennsylvania, United States
Joined Dec 2002
1,687 Posts
Hey that's Slick, well sort of?

What is your AUW?
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Old Dec 16, 2004, 11:41 PM
Chillin till SEFF
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Warner Robins, GA
Joined Aug 2003
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AUW is heavy now 8.25 oz. Smaller battery should bring that down.
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