Willy Nillies Simple 250

Yea the top curve creates a gravity split point for an air pocket to form in the line.  
I use to lay the metal tanks on their side so the feeder line is lower. Ok that way
for RC no good for CL.

Yes traditional props / results - just more modern pep if desired.

For real speed nut action a 4.4x5.5N would be my choice given that engine / plane combo.
22k / 115 PS would be about it with a turbo plug / without changing the engine.


Best level pass 87 mph pitch speed 4.5x3.5 / turbo plug.

Looks to fly really well , Thanks for sharing and taking us to the fly field

Thanks Eric! The trip to the flying field was good for my soul! I even flew a stunt kite some after the winds kicked up. All-around good day!

Brad, I’m now building an electric WN Q-Tee but when that is done, the Quickie 100 from Tasos is next up!!! Looking forward to it with reedy power.

Nice flight Troy with engine speeds unloading near 22k!


This vid has given me the inspiration that may land an order for the kit with Willy Nillies soon.  

I am also flying a home breed Killer Bee on my Lil Roughneck. The weak point of those otherwise very good  Killer Bee backplates is the black seal sleeve on the NV. I always make sure the seal is tight and replace it when gets loose around the NV stem, plus pull a silicone tube over it and the NV stem. The early stop of the engine run and fuel left in the tank can be indications of air seep into the spraybar bypassing the NV..

@Brad thanks for referring to my Quickie100 video.. I like becoming a classic reference . That red postage stamp backplate 190 has a Kamtechnik turbo head and the APC 4.5x3.5 prop, that sent the rpm beyond 28k unloaded even with only 20% nitro in my cocktail.

Those APC 4.5x3.5 props seem to have gone extinct in Europe. I could find and buy only 2 from 2 separate Hong Kong ebayers recently  and they are on their way to me. APC in the US would charge me a fortune for shipping from there.

I really like this forum with so much to see and discuss international COX experience with you guys all...

A .049 belt drive would be perfect for many plane types.
1.4:1 and 2:1 options the belt drive will be quite and allow
the ears to enjoy hearing the larger props push air. Large
free flight style grass hoppers with air wheels can make for
a good park flyer. 42" span RTF under 8.8oz would be great.
APC 7x4E could be flipped to start the .049 with ease using
a belt drive. A backplate with integrated BB drive for the TD.


Yes Andras we have a good vid of yours to compare modern gear and
suitable size performance plane for the reed engines.

Do you think the plane is tough enough for a TD?
How much does it weight RTF?

https://www.apcprop.com/product/4-5x3-5/
4.5x3.5
1/2A Pylon / Combat

I buy direct from APC using Pay Pal
In fact just bought some 5x7.5E and
the unique 4.6x3

4.6x3 application in the air with what engine?
One that is running at suitable rpm with a 3P
A KB with a mylar reed and turbo plug makes
near stock TD power with some props this one
30k / 85PS running with the right plane.
G Mark .03 would be my next engine choice.

Thrust will be outstanding with a bare bones
3ch KB on steroids  5.4oz. RTF is possible.
The 4.6x3 at 23k static puts out 10.7oz thrust.
Great thrust ratio will make for instant top end
speeds / massive vertical thrust to make for
freight train power in any direction / good breezy
day prop.

Thanks Brad, as per our communication thru youtube, the all-up weight of the Quickie100 with about 40ml of fuel included is 11 oz.

I guess a TeeDee049 would work as a brute power on this plane, but the Quickie100 would definitely fly well. But even with the red postage stamp back-plate 190 the plane is a bit nose-heavy, and the heavier TD with its CG even further away from the leading edge than the 190, the nose-heavy character would be more accentuated, but could probably be trimmed with some up elevator.

I was planning originally to ramp the Quickie 100 up to a COX TD049, but seeing how well it flies with the 190 reedy, I decided I will keep this air-frame for the reedies in my COX fleet.

You know ur stuff about props Brad , Good info . I guess with all the testing you do has its advantages..

All good info here! Doug of Willy Nillies says the Simple 250 is his least popular seller. Most of the customers are looking for more traditional classic designs, I guess. I think it’s a nice addition to his lineup, especially for those who are Cox-minded. I look forward to more flying and experimenting with it!

Thank you Eric, certain props create projects.

Andras I am surprised the TD 20 size Quickie 100 hits 11oz with a reed
engine and fuel. Certainly is flying well and weight requires a bit of prop
dia., the 4.5x3.5 has hit a sweet spot with .049 reed power!

The 250 series planes are good test bed planes for reed engines / props.
The size is up to date for today's small IC flying. Troy did you ever find
a way to check the weight of the plane RTF?

The plane weight to beat is 6.1oz / 3ch / TD .049 with throttle sleeve
15cc tank 3.20 mins total run time few passes at trim  speeds then
full throttle rest of the flight. I would be willing to build all balsa less
firewall for a shot at 5oz RTF with a reed engine and a 4.6x3 prop.
20 -30cc tank for reeds.

Brad I only added standard components like small servos and a Futaba RX.. I have added nothing else to Tasos' Quickie100 kit. The cover is light Oracover. Maybe the 400mAh MiMh battery adds too much weight (32 grams=1.13 oz). The red postage stamp backplate 190 reedy engine with turbo head and alu spinner, complete wit a Carl Goldberg mount, but without prop weighs 1.7 oz=48.4 grams...
Maybe my all up, fuelled weight conversion from about 310 grams to 11 oz is not correct?

I do not think it could be built much lighter if you plan several, 6-7 minute long flights (40 ml fuel per flight with small ballon tank) on one go to the field, without planning a battery recharge (hence the 400mAh). I am not compromising on battery capacity, having already lost 1 or 2 planes due to low battery after a few flights.

Yes 400mah is some flights / weight: 29g -1.02 oz  - typically good for 7
310g  is 10.94oz


Troy RCG you stated - weighs 248g - 8.75oz less fuel.

The Willy Nillies 250 has light,  ribbed wing, and lightened fuselage, the Quickie100 has a solid foam wing and solid box fuselage and has a landing gear too...I guess the stock kit weights are different already.

Yes very true Andras,
The 250 E designs are suitable for a good running .020 and mild .049 reed engines.
Your custom Quickie is a traditional 90's IC design with a splash of Y2K carbon application.
Very good care was taken on it's assembly.

Yep, she weighed in at 248g. I think I updated it here somewhere. If you’re not really a numbers guy, it is a very nice exciting setup and much quicker than the traditional and larger 12oz 1/2A ships I generally fly. I expect similar fun from Tasos’ Quickie. The Willy Nillies Quickie looks to be much lighter in construction, BTW. I’ve got an unopened all-wood kit for it. Not sure how suitable it would be for .049 power/vibes. Mine will be lecky and should be fun to compare back-to-back with the heavier .049 version down the road.

Congratulations TB !! ... beautiful how this model flies. You have made two interesting projects from these kits.
By the way, I mentioned it before, I like the J3 with the .020 a lot too. Strong hug for you!

Thanks as always, Mauricio! I do it for the pure joy of crafting and flying, a thrill only appreciated by fellow modelers. I am very pleased with how these models turned out and fly! Also the Hummer and GLH but they are. It featured here because of the electric power. On 3S, the smaller GLH 250 is significantly faster than the Cox powered simple.