Go Back  RCU Forums > RC Airplanes > Scratch Building, Aircraft Design, 3D/CAD
Reload this Page >

"Big Pink" Foamie - 96 inches!!!

Notices
Scratch Building, Aircraft Design, 3D/CAD If you are starting/building a project from scratch or want to discuss design, CAD or even share 3D design images this is the place. Q&A's.

"Big Pink" Foamie - 96 inches!!!

Old 09-04-2003, 03:52 AM
  #1  
CrazyHerb-RCU-delete
Senior Member
Thread Starter
My Feedback: (2)
 
Join Date: Mar 2002
Location: CA
Posts: 391
Likes: 0
Received 0 Likes on 0 Posts
Default "Big Pink" Foamie - 96 inches!!!

Hi all,

Just thought I'd show you what my latest project is.
http://home.comcast.net/~sherbertson/bigpink.htm

Following my 86 inch "Giant Delta" theory of ultra-simple foam giant planes, I designed what I call "Big Pink". Made of primarily Owens Corning Foamular250 "Pink" insulation foam board. Total cost of the airframe is less than $30.
Parts List (give or take a few parts)
1 ea - 1/4 inch piece of 5-ply (12x12 will make firewall and wing mounts)
2 ea - 6x24 lite ply
10 ea - yardsticks
1 ea - 2x8ft 1.5in thick Pink foamboard
1 ea - 2x8ft 1 in Pink foamboard
1 ea - Elmers ULTIMATE GLUE (Formerly known as Probond Poly-U) or gorrilla glue (just make sure its the brownish poly-u stuff)
1 ea - 1/2 round trim molding
1 ea - 3/8x36 inch sq hardwood (Lowes)

The wing is 1.5 thick, using 1/2 round trim for leading edge material from Home Depot.

I used a simple 22 inch hot-wire bow driven by a 6amp automotive battery charger with steel fishing leader wire to cut the airfoil (4 inches from the Leading Edge side and 8 on the trailing edge). Straight shot, from wingtip to wing tip (holding the bow bow chord-wise and running from wingtip to wingtip).

The inside of the fuse has 3/32 lite ply laminated from firewall to trailing edge of the wing. From there, I used yardstick for my tail support. Over lapped with about 12 inches from a cut yardstick over the top of the two.

The fuse is made from 1 inch foam (it's what I had laying around). However could be made with 3/4 inch.

The main spar is three layer yardsticks overlapped and laminated with an additional single yardstick in the center section layed flat.

The horz/vertical stab fin elev and rudder are all 1 inch pink foam.
The stab has a 3/8 hardwood spar from Lowes....like 46 cents.

Pretty much construction is simple....the way I wanted it. Cut shape and fit parts as needed.

Add an old converted weed whacker or chainsaw motor and drop in your radio..and go have fun!!

I have enlarged the surfaces from the original plans to get the most out of my 1/4 scale servos (make them earn the 28 bux I paid for them). Still keeping within the 1 oz per sq inch of surface. Design yours accordingly....or get Hi-torques at least.

I'll post more as I go....
PLEASE FEEL FREE TO ASK QUESTIONS/COMMENTS!

Most of all....have FUN!!
CrazyHerb
Attached Thumbnails Click image for larger version

Name:	107289_5673.jpg
Views:	76
Size:	55.7 KB
ID:	59772  
Old 09-04-2003, 06:16 AM
  #2  
BMatthews
 
BMatthews's Avatar
 
Join Date: Oct 2002
Location: Chilliwack, BC, CANADA
Posts: 12,406
Likes: 0
Received 18 Likes on 16 Posts
Default "Big Pink" Foamie - 96 inches!!!

Is there just no stopping you from this MADNESS ! ! ! !





You didn't say how it flies...... COME ON ! ! ! DON'T KEEP US IN SUSPENSE! ! ! !
Old 09-04-2003, 06:21 AM
  #3  
CrazyHerb-RCU-delete
Senior Member
Thread Starter
My Feedback: (2)
 
Join Date: Mar 2002
Location: CA
Posts: 391
Likes: 0
Received 0 Likes on 0 Posts
Default Maiden flight

Maiden is planned for next Wed/Thurs timeframe....maybe even the following weekend 13-14 Sep.

This thing called "life" keeps getting in the way of my hobby...

I'll post full report, with pics if I can find a camera person, as soon as I can.

I gotta keep the excitement level up....heck...someone may get Big Pink2 up before I do...these things are so easy to build...

CrazyHerb
Old 09-04-2003, 07:46 PM
  #4  
Mike James
Senior Member
 
Mike James's Avatar
 
Join Date: Jan 2002
Location: Anchorage, AK
Posts: 2,565
Likes: 0
Received 0 Likes on 0 Posts
Default Cool

CrazyHerb,

I followed your first delta, and see you're at it again. I just wanted to say that I think it's great what you're doing. Sometimes we can get pretty serious here, discussing scale detail, fancy composite products, etc.. ($$$)

It's great that you're providing an alternative and inexpensive way to just fo have some fun and fly. And, it's also very cool that you're just openly sharing the information with us, for free.

The more I read about your projects, the more prone I am to do something simple like that myself.

Thank you.
Old 09-04-2003, 10:30 PM
  #5  
yobeekster
Junior Member
 
Join Date: Aug 2003
Location: ancaster, ON, CANADA
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Default "Big Pink" Foamie - 96 inches!!!

Amen
Old 09-04-2003, 11:20 PM
  #6  
yobeekster
Junior Member
 
Join Date: Aug 2003
Location: ancaster, ON, CANADA
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Default "Big Pink" Foamie - 96 inches!!!

Herbmiester,
is the wing 96 by 22?
BP2 is on the way!!!!!!
Old 09-05-2003, 03:46 AM
  #7  
yobeekster
Junior Member
 
Join Date: Aug 2003
Location: ancaster, ON, CANADA
Posts: 19
Likes: 0
Received 0 Likes on 0 Posts
Default "Big Pink" Foamie - 96 inches!!!

Went to home depot and got some of the materials. Couldn't find any 5 ply in the would section. Is 3 ply ok with washers on the back? Also couldn't find any lite plywood. If I sanded down on a planer the 1/4 inch ply to 3/32 is that ok?
The rulers I saw are different from yours, so I thought for the main spar I would use 5/16 * 1-1/16 * 7' pine. Thought if I ran the wing down the table saw at 1-1/16 depth at only 7 feet I could avoid splitting the wing in two which I think would add strength to the 6" on each end of the wing that the spar isn't running through. IF the wing was only 7' long would it get in the air? Any hints? For the ailerons and the stab spar how thick is that wood. I got two 1/4 * 4" * 36" for the ails. Is that too thick?(popular wood). Is lowes a department store or a name of a wood coy? Thanx, that's it for now!
Old 09-05-2003, 12:23 PM
  #8  
fokker38cc
 
Join Date: Jun 2003
Location: Argentina south, Chubut
Posts: 177
Received 0 Likes on 0 Posts
Default "Big Pink" Foamie - 96 inches!!!

Hi
Very interesting thing.
But you dont let me rest, I am start building a giant delta and you now have other marvelous project.
Can you explain how you put into foam the hinge from tyvek without bend the tyvek?
Many thanks.
Long life to foam projects .
Yours sincerely
Jose
Old 09-06-2003, 03:25 AM
  #9  
jettstarblue
Senior Member
 
jettstarblue's Avatar
 
Join Date: Oct 2002
Location: Ashtabula county, OH
Posts: 3,204
Likes: 0
Received 0 Likes on 0 Posts
Default "Big Pink" Foamie - 96 inches!!!

CH,
At it again are we?
I should have flyin' pics of the giant delta/wing I built, 88" span 48" tip to tail. 4 stroke power.
Flight test tomorrow.

Jetts
Old 09-18-2003, 02:42 PM
  #10  
CrazyHerb
Senior Member
My Feedback: (1)
 
CrazyHerb's Avatar
 
Join Date: Jan 2003
Location: IlwacoWA
Posts: 199
Likes: 0
Received 0 Likes on 0 Posts
Default RE: "Big Pink" Foamie - 96 inches!!!

Just updated the web page last night...(see first post) ...almost done...just going over connections and last minute stuff...I'll try to get video of maiden flight to get posted....

Got pics of Yobeekters BP2...looking good too!!!

I'll have to do up a price list of all the materials when I get done just for giggles....

Fun Stuff!!!
CrazyHerb
Old 09-18-2003, 09:01 PM
  #11  
Bruno Stachel
Senior Member
My Feedback: (4)
 
Bruno Stachel's Avatar
 
Join Date: Dec 2001
Location: Edgewood, KY
Posts: 1,223
Likes: 0
Received 0 Likes on 0 Posts
Default RE: "Big Pink" Foamie - 96 inches!!!

Foam to the bone!

Looks great Herb. I haven't built your delta yet. But I took notes. I'll be watching this one too. Keep up the great work.
Old 09-22-2003, 01:09 PM
  #12  
CrazyHerb
Senior Member
My Feedback: (1)
 
CrazyHerb's Avatar
 
Join Date: Jan 2003
Location: IlwacoWA
Posts: 199
Likes: 0
Received 0 Likes on 0 Posts
Default RE: "Big Pink" Foamie - 96 inches!!!

BIG PINK FLIES!!!
Posted video page to here:
http://home.comcast.net/~crazyherb-rc/

Whoo Hoo!

CrazyHerb
Old 09-22-2003, 10:53 PM
  #13  
Gone to a Higher Plane
Banned
 
Join Date: Oct 2002
Location: Austin, TX
Posts: 264
Likes: 0
Received 0 Likes on 0 Posts
Default RE: "Big Pink" Foamie - 96 inches!!!

HERB...you have done it again...watched all the videos and it looked so smooth...the power looked good also....is it what you expected as far as flight performance??? What is your total cost at now for just the airframe???
Old 10-24-2003, 01:24 PM
  #14  
imxz28
Member
My Feedback: (14)
 
Join Date: Feb 2003
Location: Broken Arrow , OK
Posts: 62
Likes: 0
Received 0 Likes on 0 Posts
Default RE: "Big Pink" Foamie - 96 inches!!!

I can't view the video... Get audio on all your .wmv files.
Tried RealPlayer, MS Media player, and QT Player.
Can you post a different format. How about AVI.

I was able to view the big delta wing video on one of your sites.

I sent you an email asking for your phone number. Like to chat soon.

Clark

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.