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

Logged in members see NO ADVERTISEMENTS!


My own design/Flight report... Cox_ba12




My own design/Flight report... Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Enya .09 II Questions
by GallopingGhostler Today at 8:35 pm

» 22mm 2-blade nylon marine prop and solid-shaft drive
by roddie Today at 5:14 pm

» Jim Walker Firebaby
by rdw777 Today at 5:00 pm

» Cox .35 and .40 in N├╝rnberg Toy Fair
by crankbndr Today at 4:55 pm

» Cox Corvette - front end plastic part
by AMCGUY Today at 3:57 pm

» A prototype Cox Reed-valve marine engine
by 1/2A Nut Today at 3:39 pm

» How's the weather?
by HalfaDave Today at 12:02 pm

» Wen Mac .049 - Conditioning.
by MauricioB Today at 11:39 am

» music vids.. some of your favorites
by HalfaDave Today at 11:23 am

» Draco Goes Flying, But Misses the Eclipse
by HalfaDave Yesterday at 9:59 pm

» Happy 53rd birthday Mauricio!!!
by MauricioB Yesterday at 11:47 am

» Testers Sprite engine swap
by Greenman38633 Yesterday at 10:57 am

Cox Engine of The Month
April-2024
OVERLORD's

"Kress ducted fan with new Cox Conquest 15 RC"



PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


My own design/Flight report... Empty
Live on Patrol


My own design/Flight report...

Page 1 of 2 1, 2  Next

Go down

My own design/Flight report... Empty My own design/Flight report...

Post  deanthree5 Fri Apr 20, 2012 8:33 pm

Hey guys I would like to show off my new plane.The plane is my own design,18"span 7oz. before paint.No commercial parts except wheels and the engine... lol! Tell me what you think. My own design/Flight report... 000_0311My own design/Flight report... 000_0312


Last edited by deanthree5 on Wed Apr 25, 2012 6:09 pm; edited 1 time in total
deanthree5
deanthree5
Moderate Poster
Moderate Poster

Posts : 29
Join date : 2012-03-17
Age : 56
Location : Ripley,Oh

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  dckrsn Fri Apr 20, 2012 9:08 pm

Welcome to the group Dean.
Your design looks realy fine to me.
I see bits of some of my favorite profile planes on it.
Looks well thought out.
Hope it's a good flyer. Keep us posted.

Bob
dckrsn
dckrsn
Diamond Member
Diamond Member

Posts : 2750
Join date : 2010-10-21
Age : 71
Location : Long Island, New York

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  Cribbs74 Fri Apr 20, 2012 9:16 pm

Looks really good!

I like it, especially the Goldberg gear. Are you going to paint it or leave it as is?
Cribbs74
Cribbs74
Moderator

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 11895
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  RknRusty Sat Apr 21, 2012 12:06 am

That'll fly. The nose looks good sand sturdy and I like the rubber banded motor mount. With the long control rod you might want to consider a support half way back to prevent flexing or twisting. Looks like you put some nice airfoil shape on the wing. Let us know how it handles. Video if possible.
Welcome to CEF.

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
RknRusty
RknRusty
Rest In Peace
Rest In Peace

Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  John Goddard Sat Apr 21, 2012 7:53 am

Following the old adage 'if it looks right it'll fly right'
I think you'll be fine.
The wings look a little skinny but I reckon the power
Cut glide will keep you on your toes.
Don't forget the utube.
Goodluck we're all rooting for ya.
Very Happy
John Goddard
John Goddard
Diamond Member
Diamond Member

Posts : 2447
Join date : 2011-11-24
Age : 59
Location : Leyton North East London

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  nitroairplane Sat Apr 21, 2012 8:25 am

Nice plane and welcome!
How well does it balance out with the wing so far forward?
nitroairplane
nitroairplane
Top Poster
Top Poster

Posts : 6956
Join date : 2011-04-11
Location : London

http://modeldieselengines.forumstopic.com/

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  deanthree5 Sat Apr 21, 2012 9:36 am

cribbs74 yes I am painting today I hope...Orange.Thanks sunny
RknRusty Thanks if you look close I made a loop with music wire and glued it in the fuse.
Thanks John wing is 1/4 I sanded an air foil on.At 54sq.in. and 20% it should glide some... Flying
nitroairplane balance is at 20% the landing gear raked forward for some assist with out adding weight.

deanthree5
deanthree5
Moderate Poster
Moderate Poster

Posts : 29
Join date : 2012-03-17
Age : 56
Location : Ripley,Oh

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  SuperDave Sat Apr 21, 2012 9:38 am

Welcome to our forum.

It should give you good service as a trainer. As Indra has mentioned be sure that it balances properly. It would appear to be nose-heavy. (Nose-heavy planes don't fly well and tail-heavy planes usually crash)

Be sure to place a i/4 ounce of weight on the outboard wingtip to keep the plane from coming in to meet you in the center of the circle when it's in flight.
SuperDave
SuperDave
Rest In Peace
Rest In Peace

Posts : 3552
Join date : 2011-08-13
Location : Washington (state)

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  ahrma_581 Sat Apr 21, 2012 10:22 am

SuperDave wrote:Be sure to place a i/4 ounce of weight on the outboard wingtip to keep the plane from coming in to meet you in the center of the circle when it's in flight.

And a bit of right rudder, too, if it's not too late, mmmkay?
ahrma_581
ahrma_581
Gold Member
Gold Member

Posts : 290
Join date : 2012-03-21
Location : Sonoran desert

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  SuperDave Sat Apr 21, 2012 12:01 pm

If it is too late to add right rudder offest the same effect may be achieved by offseting the engine slightly by adding small washers inder the inboard mounting lugs.

The idea allows the plane to maintain tension on the flying lines allowing control in all manuvers attempted. If the offset proves to be excessive and the plane pulls too hard on the lines remove the small washers.

Better to start with too much pull than too little. Adjustments may be made once you see how the plane flys.


Last edited by SuperDave on Sat Apr 21, 2012 2:36 pm; edited 1 time in total
SuperDave
SuperDave
Rest In Peace
Rest In Peace

Posts : 3552
Join date : 2011-08-13
Location : Washington (state)

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  Ivanhoe Sat Apr 21, 2012 2:21 pm

My own design/Flight report... Welcom11 Welcome Dean,

Bear in mind that fuel will rot rubber bands in very short order, either replace them regularly or expect the engine to depart for parts unknown!
Ivanhoe
Ivanhoe
Diamond Member
Diamond Member

Posts : 1752
Join date : 2011-09-30
Location : Northern Ireland

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  deanthree5 Sat Apr 21, 2012 3:16 pm

I like the mount because in a crash,or hard landing engine safely detaches with little or no damage.Cheap insurance rubber bands are, Two Cents in the past I changed them at each flying session.Parts unknown thats funny very funny I would not enjoy that... Smile Smile Thanks Ivan
deanthree5
deanthree5
Moderate Poster
Moderate Poster

Posts : 29
Join date : 2012-03-17
Age : 56
Location : Ripley,Oh

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  RknRusty Sat Apr 21, 2012 3:55 pm

ahrma_581 wrote:
SuperDave wrote:Be sure to place a i/4 ounce of weight on the outboard wingtip to keep the plane from coming in to meet you in the center of the circle when it's in flight.

And a bit of right rudder, too, if it's not too late, mmmkay?
It has right rudder if you look closely at the second picture.

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
RknRusty
RknRusty
Rest In Peace
Rest In Peace

Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  mitchg95 Sat Apr 21, 2012 9:39 pm

deanthree5 wrote:Hey guys I would like to show off my new plane.The plane is my own design,18"span 7oz. before paint.No commercial parts except wheels and the engine... lol! Tell me what you think. My own design/Flight report... 000_0311My own design/Flight report... 000_0312

looks good man Very Happy cant wait to here about the maiden flight Very Happy
mitchg95
mitchg95
Diamond Member
Diamond Member

Posts : 2103
Join date : 2011-12-19
Age : 28
Location : Geneva, mn, USA

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  deanthree5 Sun Apr 22, 2012 6:54 pm

Finish complete, too cold and wet here in Ohio to fly DAMMIT! I will post a flight report as soon as possible... Smile My own design/Flight report... 000_0314
deanthree5
deanthree5
Moderate Poster
Moderate Poster

Posts : 29
Join date : 2012-03-17
Age : 56
Location : Ripley,Oh

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  Godsey3.0 Sun Apr 22, 2012 7:00 pm

Very nice. I have a plastic version and a ply version of that mount. They are very helpful. Saved many a prop.
Godsey3.0
Godsey3.0
Platinum Member
Platinum Member

Posts : 970
Join date : 2011-09-21
Age : 28
Location : Metamora, Indiana

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  sdjjadk Mon Apr 23, 2012 5:37 pm

Hi Dean welcome to the forum. I'm new here as well and I hope you will enjoy being here as much as I do! Smile
Your plane looks great and I wish you success with it.
Shawn
sdjjadk
sdjjadk
Platinum Member
Platinum Member

Posts : 640
Join date : 2012-04-07
Location : Southern Maryland

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  deanthree5 Wed Apr 25, 2012 6:36 pm

I flew her today...First flight was ok not enough tail, when I landed I found out why.The cloth hinges I used broke on the inboard side of the elevator.
Being the resourceful flyer I think I am, I made a field repair by cutting a new piece of cloth a drop or two of ca and I was ready to go.While at it I moved the control rod closer to the elevator to give me more throw.Flight started out ok,at lap two started in on a wingover. At the top of the arc I got a little nervous about pull out,I started to feed in up with no responce; I tried more still nothing...long story short it went straight in. Sad The funny part I guess is it went in to the glass top on my patio table lol! shattered shadobby...only a broken prop on the plane Laughing
After flight inspection showed what happened when I fixed the hinge,I glued the elevator solid straight.The elevator could only move an 1/8 of and inch or less.Back to the drawing board I guess DAMMIT!
I dont have a vid of the flight but I will be back...HOPE.

deanthree5
deanthree5
Moderate Poster
Moderate Poster

Posts : 29
Join date : 2012-03-17
Age : 56
Location : Ripley,Oh

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  RknRusty Wed Apr 25, 2012 9:44 pm

Be sure to keep glue off of the hinges' moving joints, or it'll break the fabric every time. The unintended wingover says it's tail heavy.
What do you mean by moving the control rod? I'm not sure, but I think pivot of the bellcrank should be pretty near the average C/G point, or not too far behind it. I'll look into that more closely.

_________________
Don't Panic!
...and never Ever think about how good you are at something...
while you're doing it!


My Hot Rock & Blues Playlist
RknRusty
RknRusty
Rest In Peace
Rest In Peace

Posts : 10869
Join date : 2011-08-10
Age : 68
Location : South Carolina, USA

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  Ivanhoe Thu Apr 26, 2012 2:29 am

RknRusty wrote:Be sure to keep glue off of the hinges' moving joints, or it'll break the fabric every time. The unintended wingover says it's tail heavy.
What do you mean by moving the control rod? I'm not sure, but I think pivot of the bellcrank should be pretty near the average C/G point, or not too far behind it. I'll look into that more closely.

I read that as meaning moving the pushrod closer to the elevator, shortening the elevator horn and increasing elevator movement.
Ivanhoe
Ivanhoe
Diamond Member
Diamond Member

Posts : 1752
Join date : 2011-09-30
Location : Northern Ireland

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  Ivanhoe Thu Apr 26, 2012 2:31 am

deanthree5 wrote: The funny part I guess is it went in to the glass top on my patio table lol! shattered shadobby...only a broken prop on the plane Laughing


You fly on your patio??? Very Happy
Ivanhoe
Ivanhoe
Diamond Member
Diamond Member

Posts : 1752
Join date : 2011-09-30
Location : Northern Ireland

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  fredvon4 Thu Apr 26, 2012 9:28 am

Doesn't everybody? (fly off the patio)

Until I learned to throw a rag down in my circle center after I took off on the patio (wife or son release) I would occasionally crash into a lawn chair or picnic table from wandering IN towards the ROG point I used. Small space back yards can be a challenge Rolling Eyes
I have flown 1/2A as small as 10 foot lines to test a plane in the back or front yard of government quarters. On Fort Hood I had to fly the entire circuit until fuel quit above 7 feet to clear the back fence and did on occasion crash into the fence if the engine quit on wrong side of the circle Airplane

Back to the OP...Nice plane and design, I may copy it as I have a 48" piece of 4" wide Airfoil shaped balsa from SIG


Last edited by fredvon4 on Tue May 01, 2012 9:28 am; edited 1 time in total (Reason for editing : 10" lines are real short...added foot)
fredvon4
fredvon4
Top Poster
Top Poster

2022 Supporter

Posts : 4001
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  andrew Thu Apr 26, 2012 11:21 am

Another adjustment you may want to try in order to help maintain line tension is adjust the location of your leadouts on the wingtip. Moving the leadouts rearward, toward the trailing edge, will cant the plane to the outside of the circle giving a little more "line pull". If you do decide to move them, use small increments of 1/4" or so.

andrew
andrew
andrew
Diamond Member
Diamond Member

Posts : 1813
Join date : 2011-08-11
Age : 76
Location : Western Kentucky

http://web2.murraystate.edu/andy.batts/ps/POWERSUPPLY.HTM

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  deanthree5 Thu Apr 26, 2012 6:34 pm

Thanks for all the comments everyone. Very Happy
No I don't fly on my patio,the table was in the yard; we had just got it out from storage...my wife was not happy with me for sure. lol!
What kind of cloth does everyone use or do you use the ones from a kit?I had a serious fail there and want to fix it first.I do think Rusty is right I was tail heavy but it was flyable.The tails lack of responce after glue was my biggest issue on flight 2.Help please I am really fustrated with the hinges,until this plane I have had no trouble with hinges. Embarassed
deanthree5
deanthree5
Moderate Poster
Moderate Poster

Posts : 29
Join date : 2012-03-17
Age : 56
Location : Ripley,Oh

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  fredvon4 Thu Apr 26, 2012 9:26 pm

On thes dinky planes I prefer hinges from thread as I almost always make the cloth ones TOO stiff or they break as you experienced

SIG has a fair selection of dope, tissue, and silk ( I prefer to support the older suppliers)

I know you were asking about the "cloth for the hinges" but adding info just in case you desire to explore built up wing designs

Carpet thread in an X over and under patern 1/4 form hinge line works very well and seldom breaks

Search for Kim's posting with pictures on the technique
fredvon4
fredvon4
Top Poster
Top Poster

2022 Supporter

Posts : 4001
Join date : 2011-08-26
Age : 68
Location : Lampasas Texas

Back to top Go down

My own design/Flight report... Empty Re: My own design/Flight report...

Post  Sponsored content


Sponsored content


Back to top Go down

Page 1 of 2 1, 2  Next

Back to top


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