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Author Topic: How do you Draw up Plans?  (Read 648 times)

Offline mccoy40

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How do you Draw up Plans?
« on: December 21, 2017, 11:50:11 AM »
All,

This may not be the appropriate area to post this, but, how do you guys draw up plans?

I don't have any Design software but I have built numerous planes of my own design and copied a lot of plans and kit designs. So I am familiar with the construction of a complete plane from scratch. I never draw up a plan though. At best I make templates and paste these onto the wood I'm cutting with rubber cement.

I was wondering do you use a sheet of paper from Office depot and then draw everything with a pencil ? or is there some accepted method of producing a plan that I am not familiar with. I would like to publish or submit for publishing some of the planes I've built.

Any help would be appreciated   H^^

P.S.
I cannot typically post on this site at work(actually any site for that matter). But I can view the site and the forums from work. (I'm off today that's why I'm posting)


Offline Tim Wescott

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Re: How do you Draw up Plans?
« Reply #1 on: December 21, 2017, 01:20:33 PM »
If I want to share, I use a 2D drafting program.  I use Libre-CAD, which is open-source but slightly quirky -- there's a lot of good 2D CAD programs out there of varying degrees of free-ness.  Lots more free-as-in-beer than open source, but there's enough open source stuff.

If you're not comfortable with that, you can draw up plans on big drafting paper, or on butcher paper.

If you're doing it on paper and you want to publish, negotiate with the editor -- they may be able to line you up with someone willing to CAD-ify your paper drawings.
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The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline mccoy40

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Re: How do you Draw up Plans?
« Reply #2 on: December 21, 2017, 01:53:50 PM »
Cool! I'll look for some free 2d drawing as well as reach out to the editors.

Thanks

Offline FLOYD CARTER

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Re: How do you Draw up Plans?
« Reply #3 on: December 21, 2017, 02:11:55 PM »
There was a time when I was pretty good running CADAM (a large IBM mainframe running it), but for drafting projects at home, I use pencil + paper.  CLEARPRINT vellum with a "fadeout" 10 X 10 grid (to the inch) makes drafting machine unnecessary.  Mechanical pencil with 0.7mm HB lead.
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Offline Matt Spencer

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Re: How do you Draw up Plans?
« Reply #4 on: December 21, 2017, 06:56:56 PM »
For those not from Star Treck , and for Individual Planes , traditional drafting gear is more than adequate . A T Square & Squares .

But a navigators Rule , preferably about 18 inches . DONT drop it on your toe . But your toe is softer than the floor , so it wont hurt it .



A Parralel rule is o.k. but they slip more .



Wants to be 14 inch or more to be much use .

A Staight Edge , ( Steel Rule ) at least 3 foot long , too . Actually , Just a straight edge & a square will get you under way .

10 inch min. squares !.

Throwing some lines on the back of a piece of paper ( poster ) , filling in and straightening out , can get the ideas on paper quick .

Establish the Datums . Centerline Fuse. , Wing spar / high point , hinge lines etc . FIRST Priority . Everything else will fall in around them .

A set of ships curves ( french Curves ) are usefull . Best cut from plastic sheet from the building supplies , these days .

« Last Edit: December 21, 2017, 07:56:37 PM by Matt Spencer »

Offline Matt Spencer

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Re: How do you Draw up Plans?
« Reply #5 on: December 21, 2017, 07:11:47 PM »
You find theres only half a dozen or so ( curves ) that get regular use .

Long open ones ( Fuse Curve ) a few tightish ( radiuses  @ Tips ) and the AIRFOIL ones . Which are Most Usefull .

as they can do sequential stagger or shift , to maintain a curve or plain along a flying suface , and with a few datum marks
ca be used for cutting ribs. If you enjoy marking out ribs dimensionally . 1/2 mm's & 1/64 ths etc for thickness step & so on.  :P

The Traditional scale rules the WH*RE in Melbourne F***D off with gave a almost infinite choce of fractions , for wing lay out .

What'd Enzo ferrari's drawing gear be worth . or Pinnafarinas .  :o ::) theres some really dumb bi**hes about , & rissoles .

Thisis Desin At Supermarine .



They have to go into a bit more detail .

If youve measuring sticks in 12ths, 20ths , 64ths etc , plus mm , depth of rib variation per bay , and sweep , are defineable .

But measurements are mainly conveniance and standardiseation .

Two marks on the edge of a strip of paper , and folding it in 10ths or 12ths or whatever , Give Equal & even divisions .
« Last Edit: December 21, 2017, 07:38:46 PM by Matt Spencer »

Offline Matt Spencer

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Re: How do you Draw up Plans?
« Reply #6 on: December 21, 2017, 07:53:57 PM »
The LONG ones'd be say 16 inch or so . Youd only copy & use the usefull looking ones , or derivatives . ( might tryn scan suma mine )



One ends up putting pencil mark datums on them , doing ribs and consecutive shapes .

If one curve matches LE at Root ant at Tip , @ differant sector , the two marks devided by the number of the bays , gets datum
( mark on curve ) for each rib .

Getting more tecnical than me , you could use a progressive diffrentail variation between the two datums . And Go Cross Eyed
marking it out . :P

2H & 3H are finishing / Final pencils ( Leads ) and are softer & Smudge Easier .

6H is pine line ( like wot for them rib layouts ) and wont show on a print , if light .

4 H is more usual layout pencil . ( use good one , Staedler etc )

A Fine Sharp Tip ( maybe sharpened rolled on sandpaper ) a draftsmans pencil is sharpened on a Fine Taper , NOT a short one .

A Well Sharpened 6H , Draw Two Lines ONE millimeter apart .

Split That.

Split Those .  ( parrallel Lines all )

Youve Got 1/4 mm's . BUT . . .

Two staggered overlapped lines between them now , will get you clear defined 1/10 th m.m. devisions . Which should be close enough for
general drawing .  S?P S?P LL~ LL~ LL~

Just use EQUAL Devisions ( divided by multiples ) of whatever youve got . Measuring Stick . Knotch marks . Knots on string , etc .  ;D H^^

Offline Mark Mc

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Re: How do you Draw up Plans?
« Reply #7 on: December 21, 2017, 10:12:21 PM »
For wings, my favorite drawing material is Christmas wrapping paper.  I like it because on the back of the paper are 1" grid lines to make it easier to cut straight lines when you're wrapping presents.  I use the lines to ensure that I get the ribs at right angles to the spars and LE and TE when I draw up my simple planes.

Mark

Offline mccoy40

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Re: How do you Draw up Plans?
« Reply #8 on: December 22, 2017, 07:44:34 AM »
Wow! Mat great stuff - I haven't seen a draft table since my college days - same for all the french curves!

I should explain myself a little more as to the purpose for the drawing. There are alot of rib sets and wing sets available out in the modeling world. I plan to use one of these to design a plane around it.

For example the banshee wing can be bought from Sig as a wing kit - those patterns would be traced onto the plan as a courtesy and then a note would be added indicating the stock no to buy from Sig. The other parts, stab, elevator, fin rudder, etc. I would draw.

The plane I'm thinking of is the Miss Los Angeles.
   

Offline Tim Wescott

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Re: How do you Draw up Plans?
« Reply #9 on: December 22, 2017, 05:02:54 PM »
... but for drafting projects at home, I use pencil + paper.  CLEARPRINT vellum with a "fadeout" 10 X 10 grid (to the inch) makes drafting machine unnecessary.  Mechanical pencil with 0.7mm HB lead.

I love that stuff.  But I like the 0.5mm lead.  I mostly do CAD these days because I can do moderately large revisions easier (as in -- "Hmm.  Maybe an aspect ratio of 5.5 would be better").
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline mccoy40

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Re: How do you Draw up Plans?
« Reply #10 on: December 23, 2017, 08:49:16 AM »
it"s on my Christmas list     :!

Offline PerttiMe

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Re: How do you Draw up Plans?
« Reply #11 on: December 25, 2017, 06:54:44 AM »
Going with computers, CAD isn't the only option. Vector graphics also allows you to get precise measurements and scale up and down without losing definition. You can also start from some CAD files, or maybe even export as a CAD file. Some PDF files out there are actually vector files that you can edit with a vector program. When I play with those, I use the free Inkscape.
I built a Blue Pants as a kid. Wish I still had it. Might even learn to fly it.


Offline Vitalis Pilkionis

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Re: How do you Draw up Plans?
« Reply #13 on: December 31, 2017, 02:02:34 AM »
Going with computers, CAD isn't the only option. (...) When I play with those, I use the free Inkscape.

I use CorelDraw, I like it.


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