Category Archives: Sighting

Huge Squirrel from Surrey, BC


Here’s another stretched Squirrel picture from George in BC, Canada.

It’s interesting to see the different ways people experiment with the design parameters.

Darcy:

The first has a 4 in. chord and an 18 in. span. The prop is undersized –

6 in., and will be replaced with a 7.5 in. prop. Total weight 14 grams, for an excellent wing loading of .19 grams/sq. in. With two loops of 1/8 rubber it goes like a scalded cat, nearly vertically,

the too-small prop churning furiously. The second plane, the Giant

Squirrel, has a 36 in. span with a 4 in. chord. Total weight – 36 grams, for a very good .25 grams/sq. in. wing loading. It flies fairly well with a 9.5 in. prop, but I am going to substitute an 11 in. prop for better performance. This one is definitely for calm air flying as the wing is prone to flexing in windy conditions.

Cheers

George Clarke

Hyper Squirrel — The largest Squirrel

I received these Squirrel pictures from George Clarke who lives in Surrey, BC.

I thought you might be interested in this version of your design. Wingspan – 36 in. Chord – 3 in. Length – 34 in. Weight – 36 grams. Not too bad with respect to wing loading – approximately .3 g/ sq. in. With 2 loops of 1/8 rubber powering a 15 in. carved balsa prop, it just pokes along with the prop turning fairly slowly. It will probably require a third and possibly a fourth loop of rubber to really make it go. I put a slight vee dihedral in the wing. Cheers, George

School Project for Aviation and Science

The following quote is from the Science Toy Maker Web site:

“Note: I am not a very humble person, but I have come across a really great beginners airplane design by Mr. Darcy Whyte that is better than what I have been making. It’s called the Squirrel. I will still write out step-by-step instructions here eventually because his two pages of instructions might be a little hard for beginners to follow. He uses them mostly during the classes he teaches (if you are lucky enough to live near Toronto you can sign up for them).”

“For now, go to Darcy’s web site and download the PDF instructions here rubber-power.com for the squirrel. Note that he has an instructional video there, too. You might be able to stream it with a fast connection, or right-click and ‘save target as.’ ”

–Slater Harrison, Pennsylvania

Free Flight Mailing List (FFML) sighting

ffml@smartgroups.com FREE FLIGHT mailing list

Sent: Sunday, January 08, 2006 2:02 AM
Subject: [ffml] OOS Squirrel
Hi List,

Our son visited us in Wiesbaden last spring. I had no models ready for fun so we went on the Internet, downloaded the SQUIRREL (Darcy White design), and with a slight modification, built and took it up to the brow of the hill, a big walkers and pet exercise area. There is a Roman watch tower there so we think it is the highest point in Wiesbaden.

We cranked in a few turns and while we were trimming and testing with short flights, we noticed a gentleman reading the newspaper. He was watching over his glasses. We sent up a few mid-power flights and decided too crank in some turns. We got it up to 80-90 percent and gave it a toss.

It was a sunny, cool day with the slightest breeze from the SSE. The model spiraled almost straight up and then began a more gentle circle to the left as the power came off. After a few circles we realized it was in rising air and we watched it get smaller and smaller as it tracked North. Just before it specked out as it flew over the city, the gentleman reading the paper put it down and asked in perfect English, ‘is your name on the airplane?’ I said,’ yes- also my address and telephone number.’ He said something like this. If that comes down in town and causes a car accident, they’ll know who to call for the suit! We laughed but later I wondered if he was kidding or was voicing a real concern. Regardless, the telephone never rang about the model and Hung is the only one who knows where it is.

The modification I made to the power system was to slant the toothpick that holds the rubber for the rear hook. I re-read the instructions later and found the reason the toothpick is pointed straight down is so when turns are depleted the rubber slips off which changes the CG and brings the model back down- a built in DT! Bill Kuhl has Squirrel video on his website.

Rolf