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east6008 · 03-08-2017, 05:54 AM

Here is my foamboard Geezer, I wanted something like a Lanzo record breaker, or a Heath Parasol.
The struts are streamline aluminum tube, and 100% functional of course, because the wing has no spar. It was neat how they glinted high up, as they reflected the rising sun. Geezer should be good for soaring, Bill Winter style--where you have a preset throttle setting that you know is just enough to fly. Just circle high up like that, and, as Bill used to say, "if the airplane gets smaller, something is happening"
The wing has a bit of undercamber bent by hand about 1/3 back from the LE. It will be interesting to see how it retains shape over time .After I reworked the Topflite 10 X 4 wooden prop, it has a zero sink rate with just a bit of power. Easier to see with some paint.

**williame3590** · 03-08-2017, 04:19 PM

Really nice work Wendell!

Bill

east6008 · 03-10-2017, 09:14 AM

Thanks, some good things for me anyway, with the foamboard construction--its quick, cheap, tough, and the wing does not change over time with humidity. I've got other models with the flat plate airfoil from foamboard, and I've not seen any bad flight behavior. This has led me to wonder about all the airfoil theory

OLD PRAIRIE RED NECK · 03-12-2017, 05:27 PM

Wendell! You have done it again!

More pictures and more details please!

east6008 · 03-13-2017, 05:40 AM

Here's a short clip before painting, be a little patient for the landing.
Needs a wheel alignment.

You Tube

**Max** · 03-13-2017, 09:11 AM

Nice job, Wendell.
Please explain the TF prop reworking- What did you do to improve the low-power performance???

east6008 · 03-15-2017, 05:34 AM

Wood prop reworking is an old Bill Winter trick, carved down the square corners,
especially near the hub, feathered the tips and trailing edge,things the factory machine couldn't do

**Max** · 03-15-2017, 10:49 AM

Quote:

Originally Posted by east6008

Wood prop reworking is an old Bill Winter trick, carved down the square corners,
especially near the hub, feathered the tips and trailing edge,things the factory machine couldn't do

Interesting... it makes that much of a difference?

east6008 · 03-16-2017, 05:39 AM

Not a lot, but worth it on an underpowered model, where you want to carry just
enough power for a zero sink glide while thermal hunting

03-08-2017, 05:54 AM	#1
east6008 RCC Junior Contributor I am: wendell h Join Date: Apr 2011 Location: morell pei Feedback: 0 / 0% Posts: 220 Total Props: 4	Geezer from foamboard Remove this ad - become a site supporter! Here is my foamboard Geezer, I wanted something like a Lanzo record breaker, or a Heath Parasol. The struts are streamline aluminum tube, and 100% functional of course, because the wing has no spar. It was neat how they glinted high up, as they reflected the rising sun. Geezer should be good for soaring, Bill Winter style--where you have a preset throttle setting that you know is just enough to fly. Just circle high up like that, and, as Bill used to say, "if the airplane gets smaller, something is happening" The wing has a bit of undercamber bent by hand about 1/3 back from the LE. It will be interesting to see how it retains shape over time .After I reworked the Topflite 10 X 4 wooden prop, it has a zero sink rate with just a bit of power. Easier to see with some paint. Attached Thumbnails
	.

03-08-2017, 04:19 PM	#2
williame3590 Administrator ★ Site Supporter ★ ★ Site Supporter ★★ Administrator ★ I am: William A Join Date: Mar 2006 Location: York, on Radio of choice: Futaba Feedback: 129 / 100% Posts: 10,204 Total Props: 116	Re: Geezer from foamboard Really nice work Wendell! Bill __________________ ''engine hoarder''
	.

03-10-2017, 09:14 AM	#3
east6008 RCC Junior Contributor I am: wendell h Join Date: Apr 2011 Location: morell pei Feedback: 0 / 0% Posts: 220 Total Props: 4	Re: Geezer from foamboard Thanks, some good things for me anyway, with the foamboard construction--its quick, cheap, tough, and the wing does not change over time with humidity. I've got other models with the flat plate airfoil from foamboard, and I've not seen any bad flight behavior. This has led me to wonder about all the airfoil theory
	.

03-12-2017, 05:27 PM	#4
OLD PRAIRIE RED NECK RCC Supreme Contributor I am: MERVIN BURKINSHAW Join Date: Dec 2010 Location: CORONATION ALBERTA Radio of choice: HITEC # of RCs: 13 Feedback: 12 / 100% Posts: 5,780 Total Props: 336	Re: Geezer from foamboard Wendell! You have done it again! More pictures and more details please! __________________ I never finish anything, I have a black belt in the partial arts!
	.

03-13-2017, 09:11 AM	#6
Max Administrator ★ Site Supporter ★★ Administrator ★ I am: Max P. Join Date: Feb 2007 Location: Aurora, Ontario Radio of choice: JR and Spektrum Feedback: 77 / 100% Posts: 19,799 Total Props: 232	Re: Geezer from foamboard Nice job, Wendell. Please explain the TF prop reworking- What did you do to improve the low-power performance??? __________________ Transport Canada Advanced Flight Examiner; RC Test Pilot; FPV Instructor, Airplane Instructor; Helicopter Instructor My Aircraft Albums: https://www.rccanada.ca/rccforum/album.php?u=13173
	.

03-15-2017, 05:34 AM	#7
east6008 RCC Junior Contributor I am: wendell h Join Date: Apr 2011 Location: morell pei Feedback: 0 / 0% Posts: 220 Total Props: 4	Re: Geezer from foamboard Wood prop reworking is an old Bill Winter trick, carved down the square corners, especially near the hub, feathered the tips and trailing edge,things the factory machine couldn't do
	.

03-16-2017, 05:39 AM	#9
east6008 RCC Junior Contributor I am: wendell h Join Date: Apr 2011 Location: morell pei Feedback: 0 / 0% Posts: 220 Total Props: 4	Re: Geezer from foamboard Not a lot, but worth it on an underpowered model, where you want to carry just enough power for a zero sink glide while thermal hunting
	.

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