Logo
Builders' Plan Gallery  |  Hip Pocket Web Site  |  Contact Forum Admin  |  Contact Global Moderator
August 11, 2020, 08:21:07 PM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with email, password and session length
 
Home Help Search Login Register
Pages: [1] 2   Go Down
Print
Author Topic: Cessna C-37 1/18 scale electric Build.  (Read 1667 times)
0 Members and 1 Guest are viewing this topic.
Graham Banham
Gold Member
*****

Kudos: 24
Offline Offline

United Kingdom United Kingdom

Posts: 710


Topic starter


Ignore
« on: May 06, 2013, 11:55:23 AM »

Here we go then: hopefully for next years Indoor Nats.

Cessna C-37 at 1/18 scale (22.78" span) for a Voodoo 25 powertrain (or it will lend itself to rubber if i change my mind)

Rough plan (with the emphasis on rough) almost complete. I am learning to use the Dassault Systemes Draftsight CAD software (many thanks Laurence), but until then, messing about with a combination of MS Office and Paint is the best i can do.

It's a CHWM (cream high wing monoplane!): well, it is in this picture anyway. This one is a C-37 retrofitted with the wider track cranked C-38 undercarriage for better ground handling.

Should finish the plan this week.
Attached files Thumbnail(s):
Cessna C-37 1/18 scale electric Build.
Cessna C-37 1/18 scale electric Build.
Logged
Pete Fardell
Palladium Member
********

Kudos: 150
Offline Offline

United Kingdom United Kingdom

Posts: 5,773




Ignore
« Reply #1 on: May 06, 2013, 12:09:22 PM »

Looking forward to this Graham and will follow it closely (as I try and make my own 1/18 scale GOLD-HWM). What an attractive subject. (Is that really what you call a ROUGH plan though?)
Logged
Graham Banham
Gold Member
*****

Kudos: 24
Offline Offline

United Kingdom United Kingdom

Posts: 710


Topic starter


Ignore
« Reply #2 on: May 06, 2013, 12:21:08 PM »

Thanks Pete,

Yes, it is rough because it's a mish mash of stuff done on the PC and hand drawn elements. I still need to do stringer notch positions, and some of the forward fus formers will be reshaped as the fus sides will have inner doublers added to enable the cross section changes to be made from a box under the wing to a circle at the join with the engine cowling. Some of this stuff i'll do during the build, rather than draw it to the n th degree.
Logged
TimWescott
Platinum Member
******

Kudos: 16
Offline Offline

United States United States

Posts: 1,096



Ignore
« Reply #3 on: May 06, 2013, 12:27:07 PM »

Ooh.  I love that whole series, from the C-34 to the C-165.  I can't wait to see the whole build.
Logged
Yak 52
Titanium Member
*******

Kudos: 70
Offline Offline

United Kingdom United Kingdom

Posts: 2,559


Jon Whitmore



Ignore
« Reply #4 on: May 06, 2013, 12:53:39 PM »

Looks very nice already Graham, from looking at the drawing it looks like you not doing scale ribs and moveable ailerons?

Jon
Logged
Graham Banham
Gold Member
*****

Kudos: 24
Offline Offline

United Kingdom United Kingdom

Posts: 710


Topic starter


Ignore
« Reply #5 on: May 06, 2013, 04:13:23 PM »

Jon,

Movable ailerons: no. I appreciate the advantages in terms of static appearance and as a trimming aid, but on a relatively small model like this i decided to go for structural simplicity and lightness. Likewise the scale rib spacing: scale spacing is quite tight, and the full size has extensive ply covering on the wings. As a result, the photos i'll be using show the upper wing surface with nothing like the pronounced fabric sag between the ribs on the open structure areas that something like the Fairchild has.

The Cessna has limited wing area, and i'd like to eliminate as much structure as possible to keep the weight down. The usual juggling act between weight, scale detail and documentation presented for judging.   
Logged
Graham Banham
Gold Member
*****

Kudos: 24
Offline Offline

United Kingdom United Kingdom

Posts: 710


Topic starter


Ignore
« Reply #6 on: September 18, 2013, 02:00:54 PM »

After a glacial start, some progress!

This will now be for rubber: lots of sanding on the half beer keg cowling at right next.

Apologies for the rubbish photo: I must be the only person who can't take a decent picture with an iPhone.

Graham
Attached files Thumbnail(s):
Re: Cessna C-37 1/18 scale electric Build.
Logged
sparkle
Platinum Member
******

Kudos: 17
Offline Offline

Australia Australia

Posts: 1,342




Ignore
« Reply #7 on: September 18, 2013, 04:21:47 PM »

 Grin Nice work!
Logged
Russ Lister
Free Flight Modeller .... sub 250g!
Palladium Member
********

Kudos: 73
Offline Offline

United Kingdom United Kingdom

Posts: 4,418


Russ Lister



Ignore
« Reply #8 on: September 18, 2013, 07:00:45 PM »

Looks like another winner on the way Graham  Smiley
Logged
ffscale
Silver Member
****

Kudos: 26
Offline Offline

United Kingdom United Kingdom

Posts: 249



Ignore
« Reply #9 on: September 19, 2013, 04:58:03 AM »

Very nice work Graham - like the choice of subject too.  If it's now for rubber, what are you thinking of sticking the Voodoo 25 in?

Mike S
Logged
Graham Banham
Gold Member
*****

Kudos: 24
Offline Offline

United Kingdom United Kingdom

Posts: 710


Topic starter


Ignore
« Reply #10 on: September 19, 2013, 03:46:22 PM »

Thanks guys.

Mike, it's likely the V25 will find its way into a Piper Pacer. This is a new design by Richard.

A long time ago, in a galaxy far far away......I built a low winger!

Graham
Logged
Russ Lister
Free Flight Modeller .... sub 250g!
Palladium Member
********

Kudos: 73
Offline Offline

United Kingdom United Kingdom

Posts: 4,418


Russ Lister



Ignore
« Reply #11 on: September 19, 2013, 06:29:54 PM »

Good to hear that Richard is working on stuff ... by his standards, he has been a bit quiet this year.
Logged
Graham Banham
Gold Member
*****

Kudos: 24
Offline Offline

United Kingdom United Kingdom

Posts: 710


Topic starter


Ignore
« Reply #12 on: September 29, 2013, 03:17:02 AM »

More progress:   21g as in the photos.

That tailplane may have to be enlarged.....
Attached files Thumbnail(s):
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Logged
Graham Banham
Gold Member
*****

Kudos: 24
Offline Offline

United Kingdom United Kingdom

Posts: 710


Topic starter


Ignore
« Reply #13 on: December 01, 2013, 04:08:52 AM »

In case anyone's interested, here's a few more of the Cessna.

Now 30g dead as in the photos, and ready for paint. Not light, but not too bad for a chunky 23" span model, and it has enough wing area to cope fine with a mid-high 40's finished weight.  Odd issues with paint bleeding under masking when painting the cockpit wing cutout (crappy Humbrol enamels), but this will disappear under the final exterior paint.

Much more to this apparently simple subject than meets the eye, hence it's dragged on a bit: wing root fillets were fine, as were the bent undercarriage fairings after a bit of thought.

Quite pleased with the rocker arm blisters on the cowl: I moulded these as I knew I could never carve 14 individual identical ones!

Oh, and I relented and built a bigger tailplane! 

Graham
Attached files Thumbnail(s):
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Logged
Pete Fardell
Palladium Member
********

Kudos: 150
Offline Offline

United Kingdom United Kingdom

Posts: 5,773




Ignore
« Reply #14 on: December 01, 2013, 09:11:33 AM »

Beautiful! I want one!
Logged
Graham Banham
Gold Member
*****

Kudos: 24
Offline Offline

United Kingdom United Kingdom

Posts: 710


Topic starter


Ignore
« Reply #15 on: December 27, 2013, 09:44:13 AM »

Merry Christmas and a Happy New Year everyone!

Cessna almost done, apart from dummy engine, scale prop and a couple of other bits that i'll complete once it's flown and the inevitable noseweight is buried in the cowling.

Presently 38g including prop but not rubber, so I reckon on around 50g all up: fairly hefty but it is quite chunky, and in theory has the wing area to cope.

Tailplane is a 10% linear enlargement, which still looked marginal, so I stretched it a further 10% in span only: no doubt i'll get hammered in static for this. Also, that dihedral is twice scale! The full size is a real kipper..

ATB

Graham 
Attached files Thumbnail(s):
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Re: Cessna C-37 1/18 scale electric Build.
Logged
Yak 52
Titanium Member
*******

Kudos: 70
Offline Offline

United Kingdom United Kingdom

Posts: 2,559


Jon Whitmore



Ignore
« Reply #16 on: December 27, 2013, 09:46:53 AM »

Nice! The dihedral is not that obvious from the 3/4 view in the pics - must be that straight LE.

Jon
Logged
GrahamKennedy
Bronze Member
***

Kudos: 0
Offline Offline

United Kingdom United Kingdom

Posts: 33



Ignore
« Reply #17 on: December 29, 2013, 09:53:01 AM »

Don't worry Graham - I'm not judging at Nottingham again this year, so I don't have advance notice of errors  Wink

The event clashes with the meeting in Lausanne again.

All the best for a successful test flight programme - with your skills, I'm sure all will be well.

Graham
Logged
Russ Lister
Free Flight Modeller .... sub 250g!
Palladium Member
********

Kudos: 73
Offline Offline

United Kingdom United Kingdom

Posts: 4,418


Russ Lister



Ignore
« Reply #18 on: December 29, 2013, 11:32:03 AM »

Lovely work Graham .... look forward to seeing it in action  Smiley
Logged
Laurence Marks
Gold Member
*****

Kudos: 8
Offline Offline

United Kingdom United Kingdom

Posts: 369




Ignore
« Reply #19 on: December 29, 2013, 11:39:52 AM »

Nice model Graham.  Hope it flies... just not too well!!!   Wink
Logged
Balsa Ace
Gold Member
*****

Kudos: 25
Offline Offline

Canada Canada

Posts: 466


FAC Member



Ignore
« Reply #20 on: December 29, 2013, 12:04:41 PM »

Great work,Graham.

Scott
Logged

Hawker Sea Fury FB.11
HMCS Magnificent
VF-871   Royal Canadian Navy
RalphS
Gold Member
*****

Kudos: 25
Offline Offline

United Kingdom United Kingdom

Posts: 908



Ignore
« Reply #21 on: December 29, 2013, 01:14:56 PM »

Very nice work.  How do you do the rear motor mount without punching holes in each side to take the usual tube (if it is still for rubber)?
Logged
Graham Banham
Gold Member
*****

Kudos: 24
Offline Offline

United Kingdom United Kingdom

Posts: 710


Topic starter


Ignore
« Reply #22 on: December 29, 2013, 02:28:28 PM »

Thanks all.

Ralph, the motor peg is invisible as i haven't drilled the holes for it yet!

Graham
Logged
Sky9pilot
Titanium Member
*******

Kudos: 50
Offline Offline

United States United States

Posts: 2,769


WWW

Ignore
« Reply #23 on: December 29, 2013, 05:12:36 PM »

Graham,

Absolutely gorgeous!

Tom
Logged

Best Regards,
Sky9pilot
    "If God is your Co-pilot, consider switching seats!" 
http://www.stickandtissue.com/cgi-bin/yabb2/YaBB.pl
http://freeflightarchive.com/index.php/homepage-2
Pete Fardell
Palladium Member
********

Kudos: 150
Offline Offline

United Kingdom United Kingdom

Posts: 5,773




Ignore
« Reply #24 on: December 30, 2013, 07:30:26 PM »

What a beauty! I love those colours.
Logged
Pages: [1] 2   Go Up
Print
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!