Cox Engines Forum
You are not logged in! Please login or register.

Logged in members see NO ADVERTISEMENTS!


1/2A stunt trainer design - Page 6 Cox_ba12




1/2A stunt trainer design - Page 6 Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» More Fun with the Scanner: My May '67 Issue of Model Airplane News: "The Demoiselle"
by Kim Today at 9:46 am

» Really Nice Free Flight Video
by getback Today at 8:54 am

» ebay Top Flight Nobler. Oh well......
by Ken Cook Today at 6:08 am

» Cox control line three line throttle
by 049kid Yesterday at 1:35 pm

» "Cox Flying School" in M.A.N. May, 1967
by Kim Yesterday at 8:54 am

» Automobiles you don't see everyday...
by Oldenginerod Sat Dec 07, 2024 5:44 pm

» Cox 020 PeeWee rebuild questions
by LooseSpinner99 Sat Dec 07, 2024 5:33 pm

» music vids.. some of your favorites
by Levent Suberk Sat Dec 07, 2024 5:11 pm

» Tiny Glider
by rdw777 Sat Dec 07, 2024 4:37 pm

» F.C.P. Twin Bee in the May, 1967 M.A.N.
by Kim Fri Dec 06, 2024 11:43 am

» How's the weather?
by getback Fri Dec 06, 2024 11:21 am

» **VOTE-ON-THE-NEXT-COX-ENGINE-OF-THE-MONTH** (December 2024)
by akjgardner Fri Dec 06, 2024 6:45 am

Cox Engine of The Month
November-2024
Kim's

"A Space Bug Jr. pulls the Q-Tee up high over Sky Tiger Field"



PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


1/2A stunt trainer design - Page 6 Empty
Live on Patrol


1/2A stunt trainer design

Page 6 of 9 Previous  1, 2, 3, 4, 5, 6, 7, 8, 9  Next

Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Wed Jun 17, 2015 2:07 pm

Mike Mulligan wrote:That bipe is FANTASTIC!!! Clapping

Very well done, I would be tempted to finish it in clear to show off the burned edges.

Love it!

Mike
thanks mike!
i may do another and laser engrave some detail in. this one was intended to bee a prototype so that i knew everything fit together before cutting some kits so its a bit sloppy with glue n such
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Wed Jun 17, 2015 5:38 pm

ok... weighed the bipe. even with the extra plywood and cowl.. 2.5 oz
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  getback Wed Jun 17, 2015 7:28 pm

Well that don't sound bad // with the paint/fuel proofing controls , one light Over powered engine should do the trick Huh...  1/2A stunt trainer design - Page 6 Rog_0010  1/2A stunt trainer design - Page 6 Rog_0011  1/2A stunt trainer design - Page 6 Rog_0012   Shh Very Happy
getback
getback
Top Poster
Top Poster

2022 Supporter

2023 Supporter

Posts : 10472
Join date : 2013-01-18
Age : 67
Location : julian , NC

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Wed Jun 17, 2015 8:26 pm

i see a change is in order for the bipes...
i think i'm going to change the tail feathers from 3/32" balsa to 1/8". i used b grade 3/32 and it snaps way too easy. i had broken the stab twice on the bipe (once by cat sitting on it and once by boy sanding)

i was just brushing the first coat of clear dope on and went to hang it on a hook and a 10" drop has broken the stab and elevator in 3 more places.

now i guess i'm going to cut out the broken tail feathers and replace them with 1/8" sucks!
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Wed Jun 17, 2015 8:28 pm

getback wrote:Well that don't sound bad // with the paint/fuel proofing controls , one light Over powered engine should do the trick Huh...  1/2A stunt trainer design - Page 6 Rog_0010  1/2A stunt trainer design - Page 6 Rog_0011  1/2A stunt trainer design - Page 6 Rog_0012   Shh Very Happy

you know your killing me with all the bits sitting around the tiny little work area of your bench. your giving me cox envy lol!
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Fri Jun 19, 2015 3:00 pm

HERE SHE IS!!

i just need to add the tip weight and balance it.  ohh and i forgot to bring the decal file home for the machine gun so that will be monday.... Mad

1/2A stunt trainer design - Page 6 D12F37D0-3178-43AE-828A-3FE9E2106B5C
1/2A stunt trainer design - Page 6 13791758-2E8D-484A-AC17-2A456CBB984C_1
1/2A stunt trainer design - Page 6 49DE34D1-1634-44C6-9DFA-EA5BAFE6759E_1
1/2A stunt trainer design - Page 6 D3C5C9E2-F79D-48AD-8C01-036B34E1EA46
1/2A stunt trainer design - Page 6 13791758-2E8D-484A-AC17-2A456CBB984C
1/2A stunt trainer design - Page 6 45442F02-6F3D-4E86-A2D1-6AD8C4C2B353
1/2A stunt trainer design - Page 6 434F077C-4EF2-4D1D-BBCB-EBAEDA5B423C
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  Sig Skyray Fri Jun 19, 2015 3:09 pm

She's a beaut Roger! A real work of art. Great detail.

Newbie question: why mount the elevator horn on the top?

I love the windshield! Show us the right side of the plane!

Greg
Sig Skyray
Sig Skyray
Gold Member
Gold Member

Posts : 222
Join date : 2015-04-02
Age : 63
Location : Lake Mary, FL

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  Marleysky Fri Jun 19, 2015 3:11 pm

W O W! From Stunt trainer to Well Armed Dog fighter! You do amazing work. I love the flames. Is this the one you're offering as a kit?
Marleysky
Marleysky
Top Poster
Top Poster

2022 Supporter

Posts : 3618
Join date : 2014-09-28
Age : 72
Location : Grand Rapids, MI

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Fri Jun 19, 2015 3:18 pm

Sig Skyray wrote:She's a beaut Roger!  A real work of art.  Great detail.

Newbie question: why mount the elevator horn on the top?

I love the windshield!  Show us the right side of the plane!

Greg

thanks Greg!

elevator horn on top... why not! no real reason other than to bee different. it can bee changed to the bottom

right side
1/2A stunt trainer design - Page 6 A694BC46-6A27-427C-AB4C-6EE65B029729
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Fri Jun 19, 2015 3:27 pm

Marleysky wrote:W O W!  From Stunt trainer to  Well Armed Dog fighter!  You do amazing work. I love the flames. Is this the one you're offering as a kit?  

thank you much!

LOL! this isn't even the stunt trainer// this thread got a little... ok mabee A LOT side tracked.

yes, this is the one i'm offering as a kit without the flame fuse bracing. i guess i can add it to the kit for a couple bucks more but, the kit will bee all the wood parts including the pilot and machine gun and also a set of my delrin wheels and wheel spacers. they are tight enough that a little tweak in the landing gear will keep them in place

if anyone wants the firewall i made for this cowl, i will include it along with the oval shaped one. it's from a zep foaming widow cleaner can
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  GallopingGhostler Fri Jun 19, 2015 4:01 pm

She looks fantastic Roger, really polished, well laid out finish. It's Captain Roy Brown after the Red Baron all over again! Very Happy
avatar
GallopingGhostler
Top Poster
Top Poster

2023 Supporter

Posts : 5742
Join date : 2013-07-13

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rsv1cox Fri Jun 19, 2015 5:59 pm

Your a fast worker Roger. I have been working on my Cyclone for two weeks now and it's just a monoplane. Just now getting to the painting stage.

Let me know if the price has increased over the $18 I have already sent. Seems like I saw $23 a few responses back. I wouldn't mind the bracing. What did you use for the cowl?

Bob
rsv1cox
rsv1cox
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 11295
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Fri Jun 19, 2015 6:26 pm

rsv1cox wrote:Your a fast worker Roger.  I have been working on my Cyclone for two weeks now and it's just a monoplane.  Just now getting to the painting stage.

Let me know if the price has increased over the $18 I have already sent.  Seems like I saw $23 a few responses back.  I wouldn't mind the bracing.  What did you use for the cowl?  

Bob


thanks bob!

i will say that i have had a couple days off and most of the last ten days we have had poor weather and had hoped to do some flying tomorrow but they are now calling for rain and sunday we are getting the remnants of a tropical storm. .hoping to get done building for now and do some flying if the weather ever cooperates!!

i will see what it will cost for the 1/32" ply for the fuse bracing. prolly just a couple dollars.. the $23 price included shipping/ the cowl is the cap off of a can of zep foaming window cleaner. home depot carries it
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  NEW222 Fri Jun 19, 2015 7:09 pm

Awesome finish. She looks great.
NEW222
NEW222
Top Poster
Top Poster

Posts : 3896
Join date : 2011-08-13
Age : 46
Location : oakbank, mb

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  batjac Fri Jun 19, 2015 10:34 pm

Sig Skyray wrote:She's a beaut Roger!  A real work of art.  Great detail.

Newbie question: why mount the elevator horn on the top?

Greg

I like to place the elevator horn on top of the elevator on my models as much as possible, be they C/L or R/C. The reason being that unless you're doing serious aerobatics, most of your elevator inputs tend to be Up elevator instead of Down elevator. That being the case, with the elevator horn on top, most of your pushrod inputs will be in tension, thus no pushrod flex and more positive control.

The Inflexible Mark
batjac
batjac
Diamond Member
Diamond Member

2022 Supporter

2023 Supporter

Posts : 2375
Join date : 2013-05-22
Age : 61
Location : Broken Arrow, OK, USA

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Fri Jun 19, 2015 10:44 pm

Well that make sense inflexible mark...
I also added a third hole for more movement of the elevator.

Can't wait to fly her. The engine has real good compression and running a 5x4 prop. Also going to make up a 35' set of lines. Weighs 3.5 oz finished minus engine
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rsv1cox Sat Jun 20, 2015 7:27 am

zep foaming window cleaner..Gotta write that down, as I recall you mentioned that earlier. I might be able to use the cap off the Luster Coat red spray can on my Cyclone, then I wouldn't have to paint it to match the fuselage color.

Let me know final $$'s and we will settle up.

Bob
rsv1cox
rsv1cox
Top Poster
Top Poster

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 11295
Join date : 2014-08-18
Location : West Virginia

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  getback Sat Jun 20, 2015 8:00 am

1/2A stunt trainer design - Page 6 Bipe_t10  Roger the bipe looks really GOOD !! But I can see a possible problem with that control rod ?? if were me I would remake one with a smaller bend and put a support in to take care of any flexing Two Cents  I had a really bad experience with this with my 48 mph speed plane , once in the air and down was applied it would not come out of it and caused me to repair the front section 3 times till I figured out what was wrong the next year ,, and by then had added so much weight to the model slowing it down considerably Flying  It is up to you it is your model just hate to see you go through the same thing and it's easier to fix now than later . Eric Wink
getback
getback
Top Poster
Top Poster

2022 Supporter

2023 Supporter

Posts : 10472
Join date : 2013-01-18
Age : 67
Location : julian , NC

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Sat Jun 20, 2015 8:57 am

thanks for pointing that out eric.
i don't expect this thing to fly near fast enough to have that issue but, our weather is crap for the next few days so i will take your suggestion and remake the pushrod and add a support
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  roddie Sat Jun 20, 2015 11:54 am

batjac wrote:
Sig Skyray wrote:She's a beaut Roger!  A real work of art.  Great detail.

Newbie question: why mount the elevator horn on the top?

Greg

I like to place the elevator horn on top of the elevator on my models as much as possible, be they C/L or R/C.  The reason being that unless you're doing serious aerobatics, most of your elevator inputs tend to be Up elevator instead of Down elevator.  That being the case, with the elevator horn on top, most of your pushrod inputs will be in tension, thus no pushrod flex and more positive control.

The Inflexible Mark

That arrangement may prove better for the launch-dolly that I'm making. It would place the pushrod and horn higher-up and clear of the cradle that the fuse sits down in between. Having controls under the wing/stab. creates an issue with a pushrod-support hitting the top of the cradle and not allowing the tail to rest on the rails. It's not a huge issue, but rather a design consideration when building the airplane.

Hey Rog, I can't say enough about the bipe! I love it! I mostly choose 1/8" sheet balsa for my tailplane-designs. I think it's a better choice for your bipe. It's a pain to have to build/hinge another tail.. but it'll be stronger and more rigid. The added weight shouldn't be a problem with the long nose-moment. Many scale bipes have much shorter noses.. where you really have to be mindful of tail-heaviness. I'm surprised that the model is as lightweight as it is.. that's great!

On the early machine guns; prior to the interrupter-gear, metal plates were fitted to the blade-tips of the prop, to deflect bullets!
roddie
roddie
Top Poster
Top Poster

2024 Supporter

Posts : 8844
Join date : 2013-07-17
Age : 64
Location : N. Smithfield, Rhode Island

http://www.stilburnin.com

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Sat Jun 20, 2015 12:12 pm

thanks Roddie!

i really appreciate all the compliments and even more, the input from others on every aspect of building and why.  i would hope many can learn from threads like this one.  lots of vary good basic information.

roddie, i ended up piecing this tail back together with the 3/32" thick balsa.  i also ordered "C" 3/32" to cut the tail feathers for the kits from but if i'm not happy with it, i will re-cut the pieces from 1/8". i wanted to stay true to the original kit if possible but, i prefer working with 1/" tail feathers for the reasons you mentioned.  it is a bit nose heavy with the additional ply and cowl but not too bad so the heavier tail would not bee a problem.
the finishing only added a half ounce to the plane and total weight with engine mounted is 6 1/8 ounces,

can't wait for some good flying weather!  i have at least two new planes to fly and a third right behind these 2

BTW roddie.. did you see my "too funny" post in cox engines?? i should have grabbed my phone and taken a picture to go with the story lol!
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  rogermharris Sat Jun 20, 2015 2:45 pm

Replaced pushrod.
[img]1/2A stunt trainer design - Page 6 FCDCE538-C020-4FAF-B36D-EE927AA9704F[/img]
1/2A stunt trainer design - Page 6 F6066051-76C7-4AAA-9985-ADF2B296A456
rogermharris
rogermharris
Platinum Member
Platinum Member

Posts : 503
Join date : 2015-03-17
Age : 61
Location : Long Branch, New Jersey

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  getback Sat Jun 20, 2015 4:12 pm

Man you are a push rod FREAK !! that is pretty wild looking Flying I like Thumbs Up
getback
getback
Top Poster
Top Poster

2022 Supporter

2023 Supporter

Posts : 10472
Join date : 2013-01-18
Age : 67
Location : julian , NC

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  pkrankow Sat Jun 20, 2015 5:05 pm

I would have run the rod underneath the stabilizer.  Almost no need for bends other than adjustability.

Phil
pkrankow
pkrankow
Top Poster
Top Poster

Posts : 3025
Join date : 2012-10-02
Location : Ohio

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  Cribbs74 Sat Jun 20, 2015 5:21 pm

I am kind of late to the party, but I agree with Phil.

It will probably work fine as is, it's just easier and cleaner to go underneath. Come to think of it I only see top mount control rods on combat planes.
Cribbs74
Cribbs74
Moderator

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 11907
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK

Back to top Go down

1/2A stunt trainer design - Page 6 Empty Re: 1/2A stunt trainer design

Post  Sponsored content


Sponsored content


Back to top Go down

Page 6 of 9 Previous  1, 2, 3, 4, 5, 6, 7, 8, 9  Next

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum