Tee Dee .020 combat model

I don't have a weight but picking it up was impressive. Roy is a excellent builder. In addition, line length will be 25'. We use Spider wire or equivalent. Regardless of how many times you tell some not to walk over by our smaller stuff,  someone does and the steel line stuff is now ruined.

rsv1cox wrote:what's up with that fuel tank? Perhaps the explaination was in the text.  

That's actually a ping-pong ball/bladder compartment..

Here's the underside...

Thank you for sharing Ken,
Given the minimal power, I am surprised of all the added drag, would have been better to tuck all that
inside the thick airfoil. The vertical stab is so small it may have very little influence on line tension.
If we are lucky perhaps some vid will be posted, looks like a Cox 4x2.5 should help add a bit more speed.

Brad, there's some hidden influence behind that ping pong ball. Larry Scarinzi used bowling pins from table top games in the 60's. Roy was somewhat mocking that. As for the bellcrank, all most every combat plane we build nowadays has external controls. None of us  use line clips as all ends are terminated with loops and therefore we can quickly install lines on and off in seconds. Loop either attaches to bellcrank bushings or a hook and in this case Roy has the plastic sleeves that slide over them. What isn't easily recognizeable here is that this wing is held in by tape. The bellcrank stays with the fuse and there's a 1/64" plywood saddle all the way around the perimeter cutout of the fuse where the wing slides in. If the wing is damaged, tape is removed and wing is slid out and new one put in, no controls to deal with.

Cool insights, thank you Ken,

I did a TD .020 CL project had a throttle sleeve with a grub screw to set the max rpm.
Could slow fly with calm winds or full bore on windy days very light weight was hard
pressed to damage the plane flying over grass. As I recall it jammed out on 26ft lines.
This one had a rubber band spring back landing gear for hard landings, some pics / vid.
Wing is removable with just two rubber bands for repairs but never needed it tough design.
CNC backplate and carb body sweet setup. Today a APC 4.4x3NE modified prop of choice.

Shown with a APC 4.2x2




Option to add a 3rd line for spring loaded throttle control, feather weight for it's size 90.6g / 3.19oz RTF


Plan patterns can be scaled to the Pee Wizzer .020 or blown up / down for a TD .010 / .049
Larger TD .09 version would have a sexy stance and really power through stunts.
Note US Quarter for quick scale reference:



Nov 11, 2013
Cox TD .020 idle break in / set screw exhaust throttle.
Flew solid from 65% to 100% throttle setting. Kamtechnik turbo plug would be a nice upgrade.

That other vid was one of Chucks efforts, he honed down to a real deal 2ch 1/2A speed plane with
a pressure bladder. Truly one of the top examples of what's possible today.

     

Your model is certainly top shelf. Looks terrific and exemplifies a lot of thought. I'm currently using a Kamtechnik turbo plug on a Pee Wee. Works terrific.

Thank you gents,
Yes wild or mild settings as desired. The TD .020 is a good match for the size of the plane.
Never did try it over asphalt, floats in on landing plenty of wing for the weight. Almost went
with stunt flaps as the original prop was going to be the Cox 4.5x2 This plane could be done
up with less weight but opted for year in year out seasonal durability. Yes the Fly Baby is
a chuck glider in disguise for best power to weight possible for the day. Proper wood selection
density with some thin laminated ply put forth effort in giving the TD .020 a chance at observing
solid vertical at around 75% throttle.