Trimming a small rubber powered airplane, the Supermax II

Full sized plans: jhaerospace.com/product/superm...
Short kit: jhaerospace.com/product/superm...
Carving a propeller: • How to carve an amazin...
Braiding rubber motors: • Braiding rubber motors...
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[@herbertkuttner9228]

What can I say Joshua You are a natural teacher , I wish when I was young the old timers were great but I am afraid lots of them when they wrote articles on similar subjects with the good intentions of passing on there knowledge but for some reason were not the best teachers they got to technical and it never was very clear to the newbies I my book you have a way to get good information across Thank you Herb

[@joshuawfinn]

Thank you!!!

[@powerhousepaperairplanesrogers]

The way your oldest son keeps throwing those aircraft. He has an arm on him. I can see him being a powerful quarterback someday. Keep up the good work. Great mother and great father. Best team work ive ever seen.

[@SmootWoofus]

Josh Finn, you're so cool. They way you talk about these models. You know so much, I'm just getting into this hobby. I look up to you.

[@larryjessup266]

The keys to keep things consistent it's something I've been lacking thank you I will use that for my sport flying

[@gabrielhugo7]

instaBlaster...

[@joeslife1435]

Awesome video Josh. We appreciate you.

[@professorgabrielsilvamoura3727]

Incredible your work. I know how difficult it is to build a model. Thank you for the informations.

[@stanburdick9708]

always appreciate your inspiring videos

[@Colin399]

Great video, one of your best

[@mithrandir6283]

Thank you for the information, this helped me a lot!

[@shaunbrown8500]

Great video and good content. You vids keep me motivated when we cant be flying.

[@sandfac3427]

That looks like an absolute monster of an Embryo. Still haven’t designed one yet but this is making me want to!

[@joshuawfinn]

The big things with this one are its lightness and simplicity. Even the front and rear of the fuse are interchangeable, so there are as many duplicate parts as possible. Built with care it's a sub-10g airframe and carries its own weight in rubber, swinging a big, slow prop. Ive actually maxed these launching into sink because the climb lasts over 2 minutes. The glide is pitiful but it's still good for well over 3 1/2 minutes in dead air.

[@Joyplanes]

Amazing plane!

[@alfredlebeau3137]

Hi bilding other gredet glider to wall this other una as that kain

[@wdtaut5650]

6:47 "You lose a lot of them." In my experience, it is always the good ones I lose.

[@jafs0354]

hello a great job and excellent video very good dethermalizing technique thanks for the explanation I learned a lot, regards

[@davidbeem184]

I never got these to fly, so cool to see it work

[@johnnydavidauthor]

Great video - I've never come across this before - very interesting to watch - thank you. Johnny :-)

[@joshuawfinn]

Thank you!

[@adrielestolano4668]

Thanks for your wonderful video! I am just wondering why outdoor models don't fly with the torque?

[@joshuawfinn]

Outdoor models are pretty rigid, so you don't get a bunch of wing twist creeping in as the torque goes up. As a result, you can fly them very safely to the right, which provides a higher climb rate and prevents them from torquing in to the left anytime things aren't exactly perfect.

[@davidfranklin5270]

Streamer dethermalizer! Yes! I have never seen a wing streamer dethermalizer used like this. But I have used similar devices with model rockets!

[@theogmrbill1]

I'm new to getting into rubber band planes. Why put a wick and have it burn the rubberband and have wing pop off? Why not just glide down?

[@joshuawfinn]

That's so you actually get it back. If you put it in a thermal without lighting that fuse, it's gone forever.

[@ravimaal7901]

Plastic pepar how paste it woodn wing stic.. And glu favi qvik??

[@brianamato1078]

jeeze that's lovely

[@montigobear]

Love this stuff. Flew Unlimited rubber at a few of the old Navy sponsored Nat's

[@joshuawfinn]

I just flew Mulvihill at a contest in Denver. Absolutely loved it!

[@jafs0354]

I'm an enthusiastic free flight model airplane, greetings from México

[@mattluszczak8095]

Hey bud why is the cg at trailing edge i thought it was allways 1/3 back from the leading edge?

[@joshuawfinn]

That's what they always tell you, kinda like that textbook crap about the curved top of the wing making the air go faster to produce lift. Reality is that none of it is true. For CG purposes, tail size relative to the wing dictates the optimum CG, as given by this formula: themmmclub.com/wp-content/uploads/2012/11/Tail-Volume-Coefficient.pdf

[@robertheuer7670]

so you add small parts of wood to trim with no moving control surfaces?

[@joshuawfinn]

Correct. It's called a Gurney Flap.

[@robertheuer7670]

I'll be go to hell..thats pretty darn neat..thanks for taking the time to respond!..once i get my guillows 16"ws t-28 covered i will ise this technique 👌

[@joshuawfinn]

@@robertheuer7670 glad to help! That's why we make these videos. :)

[@diyborneo88]

Second coment, and great video Sir.

[@nanangjunaidi4603]

Berapa panjang badan pesawat yang anda buat ?? Berapa ukuran karet yang anda gunakan ?? Dan berapa lub..??

[@ZZ-ns4gg]

👍👍👍

[@geebee3d]

With respect to contest endurance models...one must think of the model as a tool, not as an end itself.

[@joshuawfinn]

I don't know that I'd go quite that far, but I do fully support ending BOM across the board. Its time has come and gone.

[@carlcrutchfield5094]

💕💕💕💕💕💕💕💕💕

[@stanburdick9708]

why not just use match book shims

[@joshuawfinn]

It was a convenient way to avoid having any shims at all, for a clean front end. Or in other words, I really am that OCD.

[@MORCOPOLO0817]

I am surprised that the butyrate dope did not warp that delicate structure.

[@joshuawfinn]

I cheated. Randolph sells non-shrink butyrate. It's awesome stuff!

[@MORCOPOLO0817]

@@joshuawfinn Does butyrate coated tissue have greater longevity than nitrate doped tissue?

[@juangonzalez-cg3ic]

embryo is FAC I think? Who are the last to maintain the bom rule...

[@joshuawfinn]

Correct on both. My #1 objection to BOM is the number of models that get trashed when people die because their planes can't be flown by anyone else.

[@geebee3d]

joshuawfinn Is it FAC or AMA that has a proxy/legacy rule, where you are allowed to fly models from the estates of deceased fliers? And if there isn’t, there should be.

[@joshuawfinn]

@@geebee3d AMA deleted the BOM rule for outdoor at least 5 years ago, and NFFS and SAM were quick to follow. The result has been very positive.