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.

wantin to build a second plane scratch

Reply
Old 11-15-2004, 08:39 PM
  #1
nitrobasher
Thread Starter
 
Join Date: Jan 2004
Location: Fenton, MO
Posts: 188
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default wantin to build a second plane scratch

Well kinda, after im done with this ill already have my four star so itll kinda be my 3rd, but would like it to be easier to fly. I already know that I would like it to be a low wing, and a tail dragger. Ill probably use a TT .46 in it.

What i need to know is what i should go from. should i just make it up as i go? I dont really want copied designs, I would like this to be completly mine. mayb some tips from you guys lol.

Also I noticed on the front of the wing the balsa is bent into a 180' angle. How do they do that?

Iv tried putin some scrap balsa into water for about 20 seconds then bending it but it snaps before it gets to 90'

thanx
nitrobasher is offline  
Reply With Quote
Old 11-16-2004, 12:29 AM
  #2
Mike James
 
Mike James's Avatar
 
Join Date: Jan 2002
Location: Anchorage, AK
Posts: 2,565
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: wantin to build a second plane scratch

Bending balsa...

Opinions vary as to whether to use water, ammonia, etc., but I've found is that a little patience matters more than the liquid. (I use plain water.) Try gently wiping both sides of the balsa with a cloth dampened with your liquid of choice, and gradually bending it, just a little at a time. You can even tape it around a "jig" of some sort, such as a wooden dowel, or a metal pipe, or whatever. Just go slow, and before long, you will, as the man said, be able to "sheet a golfball".

Design...

Most of us who scratch build started by modifying an existing design first. This saves money, and, if you're starting with a good-flying plane, allows you a better chance of success. If you've flown the existing plane before you modify it, then you'll have a better feel for what your modifications have done to help or hurt the performance.

Don't copy other poeple's designs. What's the point? But...
It's useful to collect as many books, photos, movies, technical documents, plans, etc., as possible, so that you can start to absorb all the variables, and make the process more intuitive. If you're new to airplane design, and just to do it randomly, "to be different", you stand a higher chance of failure. Be creative, and be different, but don't waste your time trying to re-invent the wheel, when there's so much known data around that can help you.

Most of all, have fun! And then come back here and post some photos, along with your flying results, so we can all enjoy it. Even if you don't get it right the first few times, you'll be learning, so start NOW.

Happy flying.
Mike James is offline  
Reply With Quote
Old 11-16-2004, 01:43 AM
  #3
David Cutler
 
David Cutler's Avatar
 
Join Date: Sep 2002
Location: Los Angeles, CA
Posts: 2,162
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: wantin to build a second plane scratch

Quote:
Also I noticed on the front of the wing the balsa is bent into a 180' angle. How do they do that?
I'm Fascinated!

What do you mean by it being bent 180 degree angle on the front of the wing? That would mean it is folded right back on itself. If that's the case, just lay two sheets against each other!

Have I missed something here?

[sm=drowning.gif]

-David C.
David Cutler is offline  
Reply With Quote
Old 11-16-2004, 08:40 AM
  #4
nitrobasher
Thread Starter
 
Join Date: Jan 2004
Location: Fenton, MO
Posts: 188
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: wantin to build a second plane scratch

um i meant that its rounded off, and i think you knew that to [&:] ...


thanx for all the help mike it really helped me out. Im pretty much looking off of a four star, its gunna be the same design but longer, and bigger wingspan.
nitrobasher is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

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



All times are GMT -8. The time now is 08:11 PM.