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Posted by ajreynolds | Oct 14, 2013 @ 10:25 PM | 3,638 Views
Coming soon in Park Pilot magazine will be the plans and build article for my little profile Taube. The plans will be free to download on the Park Pilot website.

Wingspan: 30.2 inches
Wing area: 157 square inches
Length: 18.5 inches
Weight: 5 ounces
Wing loading: 4.6 ounces/square foot
Power: Suppo A2204/14 (1400kv) brushless motor, GWS 7x3.5 prop, 350 mAh 2S lipo battery
Radio: HobbyKing HK-10A ESC, Spektrum AR6110 receiver, 2 5g servos (rudder/elevator), 9g servo (ailerons).

If you have any questions or comments, please post!

Posted by ajreynolds | Apr 09, 2013 @ 10:05 PM | 4,489 Views
In an upcoming issue of Park Pilot magazine will be the first installment of a series of articles I've written on using SketchUp to design RC models. I'm covering the steps to design a profile model in my series, although the skills learned could be starting blocks to designing more complicated models.

I plan to use this blog to share some of the links to tools I use, SketchUp components I've drawn, and to field any questions or comments that come up. Feel free to pitch in or ask if you have a question.

The attachments to this post are several of the generic components I use when designing my models. Feel free to use them as-is or modify them as you would like. To use one of these components in a model, click on File->Import in SketchUp and find the file you want to use.

There is a long thread on using SketchUp on RCgroups at https://www.rcgroups.com/forums/showthread.php?t=920416. Take a look through it and you'll find tons of good information.

...Continue Reading
Posted by ajreynolds | Oct 29, 2012 @ 09:32 PM | 6,405 Views
Coming up in the January 2013 issue of Park Pilot magazine will be my plan for the XF5U Flying Flapjack. This is based on a unique experimental US Navy fighter in WW II. My design is a profile plane with a span of 21.75" and flying weight around 22 oz. It uses a pair of Suppo 2208/14 (1450kv) motors spinning counter-rotating GWS 7x3.5x3 props, 2 Suppo 20A ESCs, 2 HS-55 servos, and a 3S 2000 lipo. The horizontal stabs are all-flying. I'll post some additional pictures below and if there are any questions or comments on the design or build, feel free to chime in.

It took me three prototypes and quite a bit of tweaking to get this the way I wanted it, but in the end it came out as a very nice flying plane. It's flies at a nice speed and very stable (as long as the CG is right). There's plenty of power for unlimited vertical. It doesn't have much of a glide, but that's a flat plate for you. Takeoffs and landings are nice and smooth, be sure to keep on a little power during the landing so it doesn't slow too much.

Posted by ajreynolds | Jul 26, 2012 @ 12:57 AM | 5,328 Views
The Summer 2012 issue of Park Pilot magazine will introduce my EZ Cruiser and Mini Cruiser models. These are very simple, easy flying 3-channel models. They are slow fliers, very stable, and would make good trainers. The plans will be available for free download from http://www.theparkpilot.com/pages/BuildIt/Buildit.html soon.

Here are the specs of my designs:
EZ Cruiser:
Wingspan: 39 inches
Wing area: 296 square inches
Length: 30.75 inches
Weight: 8.5 ounces
Wing loading: 4.1 ounces/square foot
Electronics: Suppo 2204/19 (1400kv) brushless motor, APC 8x3.8 prop, 1050 mAh 2S lipo battery, HobbyKing 8A ESC, 4 channel radio, two 9g TowerPro SG-90 servos.

Mini Cruiser:
Wingspan: 26 inches
Wing area: 132 square inches
Length: 20.5 inches
Weight: 3.4 ounces
Wing loading: 3.7 ounces/square foot
Electronics: HobbyKing 1811-2000 (2000kv) 10g brushless motor, GWS 5x3 prop, 350 mAh 2S lipo battery, Thunderbird 9 ESC, 4 channel radio, two 3.6g HobbyKing S0361 servos.

I don't fly indoors, but I suspect at the size and weight, the Mini Cruiser would work inside a gym or similar venue.

In the pictures below, the blue foam one is the EZ Cruiser and the white and orange is the Mini Cruiser.

If you decide to build one of these or have any questions, please let me know!

Posted by ajreynolds | Aug 01, 2011 @ 12:23 AM | 7,160 Views
Park Pilot magazine has published the plans for my profile Zero. The plan is available for free download from Park Pilot's website. This plane makes a great companion to my previous Wildcat plan. The Zero is a bit simpler than the Wildcat since it doesn't have landing gear.

Wingspan: 30 inches
Wing area: 147 square inches
Length: 21.6 inches
Weight: 9 ounces
Wing loading: 8.8 ounces/square foot
Power: Suppo A2208/12 (1800kv) brushless motor, APC 7x5 prop, 1050 mAh 2S lipo battery
Radio: Castle Creations Thunderbird 18A ESC, Spektrum AR6110e receiver, 2 5g servos (ailerons), 9g servo (elevator).

I've flown this in gusty 10-15mph winds and it's amazingly rock solid for it's size and weight. It really grooves!

It's a pretty straightforward build, but if anyone needs some additional info or pictures, let me know.

Any questions or comments, let me know. I'd like to hear from anyone who builds one of these!

Posted by ajreynolds | Oct 07, 2010 @ 01:00 AM | 10,846 Views
I've come up with a nice little 30" Grumman F4F Wildcat. It's a profile plane but is as close to scale as I could get it in profile and planform. The only change I made was to take the ailerons all the way to the wingtips instead of stopping a little short. It's also got landing gear which works really well and soaks up the bumps nicely. Takeoffs, landings, and touch-and-goes are nice and smooth, and the plane really sticks to the ground, it doesn't bounce much at all. I'm sure it would also fly well without gear, but I haven't tried it.

There will be a construction article in the winter (January) issue of Park Pilot magazine and they will be posting the plans online. I'll be posting some extra pics here and answering any questions people might have.

The plans are now available at http://www.theparkpilot.org/pages/Bu...F-wildcat.html

Some specs on my plane:
30" wingspan
12oz AUW
motor: Suppo A2212/13
ESC: Suppo 20A
Servos: 3 TowerPro SG-90 9g
Radio: Spektrum AR6110e receiver
Battery: 3S 1300mAh lipo
Prop: GWS 8x6HD

This power setup is a bit heavy, but was what I had on hand. It flies really well and can really move out. Vertical is unlimited. The extra weight actually helps quite a bit on a breezy day. I only used a single aileron servos with torque rods.

A friend of mine has built one of these as well, but went with much lighter equipment: a 2204 size motor, small ESC, 2S 450 lipo, a pair of Hitec HS-45 servos for the tail, and a pair of Dymond D4.7 servos for the ailerons. His came out to under 7oz. It doesn't fly as fast or handle winds quite as well as mine, but it still flies very nicely.

Once the plans are published, I'd like to see pictures of what other people do with this plane!