RC Groups - Foamies (Scratchbuilt)

Question Tribute 3d profile foam question.

-=Brian812=- — Sun, 22 Nov 2009 18:09:45 GMT

Can anyone tell me what type of foam the "Tribute 3D Profile ARF by E-flite" is made out of? :confused:

Thanks
Brian.

http://www.horizonhobby.com/Products...0#quickSupport

Question Gatorboard

Sabrejock — Sun, 22 Nov 2009 12:26:18 GMT

Has anyone found "Gatorboard" to be usefull for our purposes? It's not cheap, so I thought I'd ask before persuing it further. Looks like it might be handy where more rigidity is needed. Tex.

Discussion Who built the First RC Model from FFF?

Sixter — Sun, 22 Nov 2009 04:57:07 GMT

I was talking to my Best Buddy who also builds and flys Electric Foam RC Models, about Bluecor Foam Models. And I said " I wonder who built the first RC Model from DOW Bluecor Foam (FFF)? Anyone know who built the first RC Model from FFF?

Sixter

Discussion Silent Mite - Aerobatic Full Fuselage Fun Plane

hoppy — Sat, 21 Nov 2009 18:58:23 GMT

I've built a lot of foamy planes and only a few have made my "I'll build this one again list". On that list is the Polaris, Infinion, FuntanaMini and the newest one, the Silent Mite.

Just can't believe this plane has not caught on big time as it does everything well.
Looks good, flies good, crash resistant, uses small motors and batteries, flies in gusty winds, though not nearly as much fun as if the winds are down but it will fly in the gusty stuff. Right now it's my favorite outdoor flyer and being made from EPP it's also crash resistant.

Take a look at it - comes with good drawings and an excellent construction manual.
http://www.rcgroups.com/forums/showt...ht=silent+mite

Here I am hovering it under a tree. :)

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Discussion "Gremlin" plans?

Flatulator — Sat, 21 Nov 2009 17:15:36 GMT

Hi, I first saw this plane in this thread posted several weeks ago. I would love to build this cute little plane, but need plans. I sent "Hippo" a pm and also sent an email to Foamfly.com to ask about plans but got no response to either. Does anyone have plans for the Gremlin they could share? Thanks

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Discussion Delta Yak (Slow Flyer, PDF Plans)

Rctestflight — Sat, 21 Nov 2009 14:35:36 GMT

This is a Yak with a delta wing. This is a great plane for 3D and slow flying.
WS: 28"
Weight: 7-10oz
Motor: 24g Blue Wonder
Battery: 300-800 MAH 3s lipo

More info:

http://rctestflight.webs.com/deltayak.htm

Vids:

Delta Yak (FREE PDF Plans) (1 min 47 sec)

Delta Yak in Front Yard (2 min 24 sec)

Build Instructions and build vids:

http://rctestflight.webs.com/deltayakinstructions.htm

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Discussion Big Delta

Rctestflight — Sat, 21 Nov 2009 03:30:36 GMT

This is a big delta wing I made out of 1/2" foam I got from home depot. The WS is 6'

Vid:

big rc stingray gilder plane (2 min 20 sec)

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Cool Snow Bird

Rctestflight — Sat, 21 Nov 2009 03:10:54 GMT

This is a EDF slow flyer cargo plane I made just for the snow. It has a 64mm EDF and a 2200mah 3s lipo battery. the WS is 39" and it is 32" long.

Maiden Flight:

Snow Bird RC Plane Maiden Flight (4 min 22 sec)

More Info:

http://rctestflight.webs.com/snowbird.htm

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Discussion Air Truck

Rctestflight — Sat, 21 Nov 2009 02:49:28 GMT

This is a good plane for AV and slow flying. It is all made from 6mm depron and it would be a good trainer. The PDF only includes the fuesalage, there are instructions on how to build the wing in the instructional vids.

Vids:

Air Truck RC Plane (FREE PDF Plans) (1 min 21 sec)

Air Truck Lands on Tramp (0 min 28 sec)

Build Vid (build instructions):

air truck instructions part 1 (5 min 58 sec)

air truck instructions part 2 (8 min 34 sec)

More info: http://rctestflight.webs.com/airtruckv2.htm

Attached Files

Air Truck (Tiled).pdf (227.1 KB)

Download Delta Racer

Rctestflight — Sat, 21 Nov 2009 02:29:34 GMT

This is a simple delta wing made of depron. It is very fast, I have gotten it up to 101mph in a vertical dive. The PDF is only 4 pages.

Vid:

Delta Racer (FREE PDF Plans) (1 min 14 sec)

Build Vid (build instructions):

Delta Racer build vid (8 min 43 sec)

More info and recommended electronics:

http://rctestflight.webs.com/deltaracerv2.htm

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Delta Racer TV (Tiled) PDF Plans.pdf (148.3 KB)

Discussion cheap components on ebay

pumpkin2themax — Fri, 20 Nov 2009 21:48:35 GMT

maybe i'm the last to realize this, but when hobbyking is out of stock, check ebay.

I was surprised to find servos batteries and motors at competitive prices on ebay, maybe you will be too!

nate

Discussion Anyone Tried to Make a 'Skate' or 'Mamba' Model?

MikeinMiss — Fri, 20 Nov 2009 05:38:11 GMT

I came across an article in AviationWeek magazine about some models produced by Aurora Flight Sciences called 'Skate' and 'Mamba'. Below are a description and some pictures of them from the aviationweek article. I was wondering if anyone had tried to replicate either of them and with what success.

"Aurora Flight Sciences... Some of the company's "skunk works" engineers, not long out of MIT, present two backpack UAV concepts that push the envelope of what flying machines look like."

"Skate resembles a rigid, folding kite and is powered and steered by two independently controlled, vectoring, electrically powered propellers. The aerodynamic configuration and propulsive control make the Skate essentially immune to conventional stalls and allows it to turn tightly between buildings or inside them."

"Mamba has been designed to provide a simpler, more compact design for a ducted-fan UAV. With twin counter-rotating two-blade rotors and a four-segment folding duct, Mamba collapses into a small volume. Its most unusual feature, though, is a "suck and stare" mode: it can fly into a ceiling and wall and use the fan to stay in place, using less power than hovering."

Discussion how do I make PDF plans

JonathanZ — Fri, 20 Nov 2009 03:02:55 GMT

Hi everyone

I want to start scratch building RC planes. And was wondering how do I make PDF plans?
because I'd like to post my plans here for everybody to enjoy

Thanks Jonathan

Discussion How about a LANCAIR

RedLabel — Fri, 20 Nov 2009 02:55:53 GMT

It's been a few years since I left this hobby. I used to work with foam, especially depron and similar type of foams. It was really to work with foam and the resulting planes were much more durable, light ...

I always liked Lancair made planes they really look beautiful and from the videos I have seen they seem to fly beautiful too. Some time ago I decided to model it on cad.

I nearly finished the solid model and I think it looks fine.

I can draw the parts for a nice skeleton and wing. The problem is to keep the elegant curves of the plane. I have seen in other threads that Hrpye has great success with his method for forming the skin. I can draw the ribs for a mold if anyone wants it.

I'm open to suggestions, although I won't be able to do it I hope someone decides to build the plane in the end.

You can see cad drawing of the model in the few pictures I attached.

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Discussion Trainer/AV plane with float addon

Russ40 — Fri, 20 Nov 2009 02:42:56 GMT

I wanted a stable plane for some AV stuff and also to use for some buddy box training. I decided to make it a pusher to keep the prop out of the way. After I finished it I thought it looked like a seaplan so I had to design a float for it.
The specs are.
WS 48" KFm3
length 44"
weight 29oz
motor Turnigy 2826-1900 with a 8x4E prop
Turnigy 30amp esc
1300ma 3s lipo

It flies great with wheels or float. Here are a couple of videos of both.

AV rc plane (2 min 46 sec)

AV rc plane pt2 (2 min 58 sec)

AV plane with float conversion (4 min 58 sec)

And a video from the plane of our flying field.

Aerial video (5 min 32 sec)

Russ

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Discussion My Delta-Duplex build

lennyboy — Fri, 20 Nov 2009 00:06:15 GMT

Hey,
Wondering ifyou guys could tell me what is a good size prop for slow fly??
I 'm new since Feb of this year ..
he loaded weight is 14 1/2 ozs and the motor is from headsup rc a 840 kva at 24 ozs of thrust??
I would guess a 7 or 8 x4 or 5 sure could use some help??

thanks,

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Discussion Suggestions for making a new nose cone

MinneFlyer — Thu, 19 Nov 2009 21:17:33 GMT

Hi there! I recently had a crash that resulted in the demise of my nose cone on a plane that is no longer in production (buying spare parts is not an option).

I'm looking for ideas on how to go about making a nose cone? I've thought about molding (sanding) something out of foam, but the thought of a million statically charged pieces of foam getting everywhere in my shop doesn't sound so appealing. I don't have access to a vacuum machine either, so vacuum forming a replacement is not really an option either.

Does anyone have any quick, easy, relatively non-messy ways of making a new nose cone?

Thanks in advance for your ideas!

Discussion lightweight foam primer?

Ryan Archer — Thu, 19 Nov 2009 18:24:22 GMT

does a lightweight primer, that will not eat depron, exist? i'm having a heck of a time finding one that works worth a dang.
ryan

Discussion How To Wire Two or More Motors???

cityseagull — Thu, 19 Nov 2009 17:53:47 GMT

Basic question, how are two motors connected in order to use the same channel? I assume it is some sort of splitter or something? Does each motor share or get its own esc?

Many thanks!

Discussion Painting the Black/Gray Depron?

mackey — Thu, 19 Nov 2009 17:47:31 GMT

The 6mm Depron my hobby shop has is black/gray color. Has anyone tried painting that stuff? If so, what did you use?

Thanks,

Bill

Discussion What do you think of this for a Motor, Battery combo on 300 Extra

lacofdfireman — Thu, 19 Nov 2009 17:24:12 GMT

I am building a Powers, Extra 300 and was wondering if this would be a good motor battery esc combo... I want something with plenty of power that can pull out of a hover with no problems...

Motor: hexTronik 24gram Brushless Outrunner 1300kv

http://www.hobbycity.com/hobbycity/s...idproduct=2069

Battery: Rhino 1050mAh 3S 11.1v 20C Lipoly Pack

http://www.hobbycity.com/hobbycity/s...0C_Lipoly_Pack

Esc: Hobbyking SS Series 15-18A ESC

http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=6456&Product_Name=Hobbyk ing_SS_Series_15-18A_ESC

Thinking a 9050 prop with this setup would give me plenty of power? Any different suggestions?

I am also thinking of using this same setup on a SloYak, SD 40 and a few other type of 3D planes...

Any suggestions aappreciated before I place my order...

Discussion Plans and ideas from Dleep

dleep — Thu, 19 Nov 2009 16:38:00 GMT

I'm starting this thread to diplay plans an discuss mods for some of the
things I'm working on. Including other peoples ideas.
At present I have limited access to internet, so build logs are not possable,
in that time frame. And replys may take a day or more.
That being said here are some of the things I've been working on!

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Question Expo Question

jhtitan — Thu, 19 Nov 2009 14:04:35 GMT

Are there any adverse effects to using expo? like too much expo or to short of throws and expo?

I have a plane that flew before, after some tweaking on the control surfaces and some power system changes. I have not been able to get it back into the air. it goes all crazy on launch and if I can get it under control it is real twitchie.

I have checked and rebuilt and rechecked everything on the plane, there is no reason for it to fly this way. its the second plane I have had this problem with another plane I was trying to design. I can't remember what I had rates and expo set to, but it was having the same problems, which I chalked up to the plane which was my first attempt at design.

anyway, thanks for any help you all can give me.

Jon

Discussion P47 Profile Tiled Plans

malden86 — Thu, 19 Nov 2009 13:18:07 GMT

Hello everyone, I'm wondering if anybody out there has tiled plans for a P47 profile foamie? Any help would be appreciated. Thanks.

Discussion MY cartoon fattie planes...

ey0927399 — Thu, 19 Nov 2009 08:12:50 GMT

Hi ~ everybody:
I am a new person here, I come from Taiwan, recently liked on the cartoon fattie planes, shared some my work, this referred to the Boeing 737 designs, hoped that you will like, it really can fly ~

2009Q版客機飛行 (2 min 48 sec)

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Build Log first build ever DH 110 Sea Vixen

uggymoo — Thu, 19 Nov 2009 06:28:51 GMT

Well I think that I have read all I can so it's time to give this a try. Canada the land of trees and all that nature stuff and no depron to be found .1/2 " pink was cheep for my first try so here it goes .The span is 42" X 42" long nose to tail you know go big or go home!
Any help or pointers would be great.

thanks
Uggymoo

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Discussion Foamy Racer 2212-06 motor

JIMBAKER — Thu, 19 Nov 2009 05:00:19 GMT

Foamy Racer, 2212-06 Super Mega Jet motor from Grayson Hobby (4 min 52 sec)

I have been interested in designing my own foam racer ever since I was introduced to 6mm Depron foam. The power of these little electric motors (2212-06) in the park jets that I have built from the free plans found on the internet from the likes of Steve Shumate and tomhe is just amazing. I have drawn a set of plans that I want to share to repay �sort of speak� the fun I have had rediscovering the hobby of R/C and the discovery of the electric side of this great hobby.

This racer has a 30 inch wing span with 200 sq. inches of wing area, length, 24 inches. I like the looks of cheek cowls and so used them to supply cooling air to the battery and ESC.

The plans are not yet finalized but so far the fit seems to be good and I am testing a slightly larger wing to see if I can get the landing speed down a little more, it is not bad now but there is always room for improvement. It looks to be a fairly good sport plane as well, I have only flown it with one aileron but it could be built using both ailerons, rudder would also be an option but all that just adds weight. Building as designed it should weigh just slightly over one pound or less, it will climb vertically until it is too small to see. I have been using the Super Mega Jet Motor V2 brushless outrun motor with the 40 Amp ESC and the Mega Jet V2 2212-06 with the 30Amp ESC. I used a number of batteries so far from 1500 mAh 15C to a 2200 mAh C25 3S Lipo batteries. I am using the APC 6x4 electric prop. Same setup used in most all the parkjets I have built and flown. (I plan to try a S4 2200 mAh C30 battery soon. GO FASTER, Turn Left!)

http://www.graysonhobby.com/catalog/...mbo-p-414.html
I am currently using this motor 2212-6 from RC Times & their 30 Amp ESC.
http://www.rctimer.com/index.php?app=goods&spec_id=162

6mm Depron Foam Longwing Racer (2 min 34 sec)

Building

I start by cutting out all the parts, and then epoxy the carbon rod in the wing, plywood spar in the horizontal stabilizer and the plywood motor mount. In preparation before mixing the epoxy I clearance the cut on the HS with sand paper until the 1/32� plywood fit without forcing it in, just still slightly snug. I use the West System epoxy and one pump of part A and part B is more than enough to accomplish all of this. I use blue painters tape on both sides of the slot cut out for the carbon in the wing. I apply one wide stripe of tape that covers the slot completely on one side and two stripes of tape on both sides on the opposite side along the slot edges to keep the epoxy off the rest of the wing. The slot in the HS for the 1/32 plywood get a narrow strip of tape on one side only.

After the epoxy is mixed I let it stand a short time for the two parts to marry. I usually measure and cut the carbon rod during the marriage of the epoxy. I stand the 1/32� plywood up in the paper cup and using a sharpened tongue depressor to apply the epoxy from the top and let it run down until it is completely covered with epoxy. (Yes, I use disposable gloves when working with the epoxy.) Once coated, I slide the 1/32 plywood spar into the slot and work the epoxy into the ends and along the length of the slot before wiping off the excess epoxy with a paper towel. I lay the HS on a flat table with waxed paper top and bottom and a book on top until the epoxy cures, (about 3 hours).

With the wing on a piece of waxed paper I mix in a table spoon of micro balloons in the remaining epoxy for the carbon spar and motor mount. Once the epoxy/micro balloon mix is smooth I fill the slot about � full the enter length with this mix. Then place the carbon rod in the slot and press it down gently, allowing the excess epoxy to rise to the top of the carbon. I make sure the carbon rod is pressed completely down to the bottom of the slot then fill and level the epoxy over the top of the carbon rod. Once satisfied the carbon rod is completely embedded in this mix I place another piece of waxed paper over the top smoothing out the epoxy level with the tape under the waxed paper before placing books on top to hold the wing flat until the epoxy cures.
I then epoxy the plywood motor mount to the foam motor mount part F-1a and set it aside to cure. After three hours I check the remaining mix to see that it has cured and if so pull the tape off the HS and the wing, top and bottom making sure I remove all the tape. If there are any voids in the epoxy around the carbon rod I fill them with spackle before placing the wing and HS back between the waxed paper and placing the books back on top, leaving them to fully cure over night.

While the wing and HS are curing you can start the fuselage assemble by gluing the fuselage lower doublers on the sides with 3M 77 contact cement (or the contact glue of your choice, being sure to make a left and right side!) I usually apply a heavy coat of 3M 77 spray and immediately apply the doublers to the fuselage sides, then immediately removing them, this transfers the glue to the sides. Let them dry slightly before re-joining them together permanently. Once the doublers are fixed to the sides you can cut out for your servos at your favorite location. Install the F-2 & F-3 formers to one side of the fuselage sides using ultimate RC glue making sure they are square. Once the formers are set on the first side I glue the second side to the formers, making sure the two sides are square. While the formers dry to the fuselage sides I assembly the cowl cheeks together and set them aside to dry. While you wait for the glues to dry you can sand the leading edge of the rudder round and if you want that extra edge in speed, you can taper the trailing edge too.

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Attached Files

RACER 22 PAGE 1 22X34.pdf (52.5 KB)

RACER 22 PAGE 2 36x24.pdf (155.8 KB)

Build Log the DeltaDart: an ultra micro simple foamy

Wings of War — Thu, 19 Nov 2009 03:19:43 GMT

hello all, what we have here is my little project, which i call the delta dart
its made simply from two depron triangles, one right and one isosceles. glued perpendicular to each other.

i use the receiver and servos from parkzone's sukhoi, and the motor from the blade msr, which give it more than enough power for vertical takeoffs, it is three channel, with a bomb drop soon to come, and i will be flying a counter rotating version at efest this year!

this is the first version. with a few revisions to come. tell me what you think and i hope you like it!

pics will come soon! as will plans!

Discussion Scratch Built 'Manta Ray' Plane

MikeinMiss — Thu, 19 Nov 2009 03:11:43 GMT

Quick video showing the maiden flight of my newly constructed Manta Ray plane. It's a mix of the 'Nutball', the 'Drenalyn' and the 'UFO-AP'. This is by far my most stable scratch-built so far. The body is made from elmer's foam board. The vertical stablilizer and engine mount are made from 1/2 " foam from my local hardware store. I'm really looking forward to tweaking my controls and balancing. I also plan to install a camera up front for some on-board video.

The Flying 'Manta Ray' Plane (3 min 28 sec)

Discussion Could Use some help

The_Builder — Thu, 19 Nov 2009 03:08:28 GMT

I am looking for a foam that may not exist but if it does and you know where I can find it please let me know. I would love to get some foam very much like the $$Tree foam board stuff but 1" thick. I have considered laminating 4-5 sheets but that is a great deal of work. If you can help please do.

TB