Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!


TD .051 RC SPEED Babe_b10
TD .051 RC SPEED Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Vintage balsa gliders
by wingchicken Today at 6:47 pm

» Two texaco build from parts
by sosam117 Today at 5:05 pm

» Dope free build
by oldguy Today at 1:20 pm

» Getting Ready to Attempt some Restorations - Newbie
by Cribbs74 Today at 12:29 pm

» Automobiles you don't see everyday...
by rsv1cox Today at 11:49 am

» Thermal Hopper Question.
by Cribbs74 Today at 11:39 am

» Cox Dragonfly engine
by davidll1984 Today at 11:11 am

» music vids.. some of your favorites
by Oldenginerod Today at 6:20 am

» Help me Find m'y lost Snowmobile engine
by davidll1984 Yesterday at 10:32 pm

» Cox Tee Dee R/C .051 from Kustom Kraftsmanship
by sosam117 Yesterday at 6:43 pm

» TD 09 Ducted Fan
by OVERLORD Yesterday at 11:12 am

» Model Locomotive stuff
by Ken Cook Tue Jan 19, 2021 7:16 pm

Cox Engine of The Month
January-2021
Jason_WI's

"Bucket-O-Parts Cox TD .15 Special"



PAST WINNERS

CEF Traveling Engine

Win This Engine!
Forum Store
CEF Ear Savers
Gallery


TD .051 RC SPEED Empty

TD .051 RC SPEED

Go down

TD .051 RC SPEED Empty TD .051 RC SPEED

Post  TD ABUSER on Mon Nov 02, 2020 8:47 am

I got the itch to build a TD .051 powered speed plane.
Make the plane as small, light and low drag as practical.
Control it with "Park Flyer" sized radio gear.
I bought a NIB engine for $85 shipped and it has turned out to be a good one. Probably an early model ..?
With a 5 x 3 rubber Cox prop it does 22,000 on 22% nitro
With a 4.2 x 4 APC / Nelson plug it does 25,000 with ease.
The wing is solid balsa sheet 1/4" thick with a full span 1/8" x 1/4" poplar spar
Covering on the wing is tinted cellophane, Towerkote film on the fuselage.
The wing is roughly 120 sq inch with 30 inch span.
The cowl is a few layers of  FG cloth applied with medium CA over a blue foam form [aka "plug"]
Use a latex glove finger to spread the CA into the cloth. It takes very little CA to saturate the fibers. Sand before applying the next layer. This is a quick method for making small parts.TD .051 RC SPEED Img_0213
TD ABUSER
TD ABUSER
Silver Member
Silver Member

Posts : 65
Join date : 2020-11-01
Age : 65
Location : Washington

Back to top Go down

TD .051 RC SPEED Empty Re: TD .051 RC SPEED

Post  davidll1984 on Mon Nov 02, 2020 10:01 am

??? No ruder ??? How it afect flight speed ?? Nice models Thumbs Up
davidll1984
davidll1984
Platinum Member
Platinum Member

Posts : 889
Join date : 2020-02-12
Age : 36
Location : shawinigan

Back to top Go down

TD .051 RC SPEED Empty Re: TD .051 RC SPEED

Post  TD ABUSER on Mon Nov 02, 2020 10:11 pm

davidll1984 wrote:??? No ruder  ??? How it afect flight speed ?? Nice models  Thumbs Up

Thanks for reminding me about the rudder...! Very Happy
TD ABUSER
TD ABUSER
Silver Member
Silver Member

Posts : 65
Join date : 2020-11-01
Age : 65
Location : Washington

Back to top Go down

TD .051 RC SPEED Empty Re: TD .051 RC SPEED

Post  getback on Tue Nov 03, 2020 7:50 am

That should move out Good TD Abusher RC Plane Rudder = Drag
getback
getback
Top Poster
Top Poster

2019 Supporter

2020 Supporter

Posts : 7466
Join date : 2013-01-18
Age : 63
Location : julian , NC

Back to top Go down

TD .051 RC SPEED Empty Re: TD .051 RC SPEED

Post  TD ABUSER on Tue Nov 03, 2020 3:38 pm

getback wrote:That should move out Good TD Abusher RC Plane  Rudder = Drag

Let's say the engine might hit 27,000 rpm with a 4 pitch prop. The mathematical speed is 105 mph.
So I'll look at that speed as "Ground Zero". If the plane flies that speed or faster, The Designer did a good job. If not, then The Designer's pencils get taken away from him and he is demoted to "Shop Maintenance Tech".
One thing I see here is it's a nice looking wing on an ugly fuselage. There's always room for improvement.
TD ABUSER
TD ABUSER
Silver Member
Silver Member

Posts : 65
Join date : 2020-11-01
Age : 65
Location : Washington

Back to top Go down

TD .051 RC SPEED Empty A VERY WEAK UPDATE

Post  TD ABUSER on Sat Nov 07, 2020 8:32 pm

Well I got 3 flights in today at a field where the owner of the 10 acre hay field recently moved.
He's the same guy I bought a rusted out Datsun 280Z from about 5 years ago. I overpaid for that "basket case / rust bucket" so I didn't feel too guilty about using his hay field today for 1/2 hour today.
The plane flies just like a "speed plane" or a pylon plane should. The generous amount of span makes it very stable and the "fore / aft moments" are plenty stable too.
The only problem is the plane was very slow today. It might be a little bit nose heavy...just a wee bit. The glide is what I would call "urgent to land".
I did not provide the engine with a hole in the cowl above the velocity stack. I think it might be a good idea to do that now.
It wasn't running fast enough to bother with video, but it was fun to fly RC again after so many years have gone by.TD .051 RC SPEED Img_0217
TD .051 RC SPEED Img_0216
TD ABUSER
TD ABUSER
Silver Member
Silver Member

Posts : 65
Join date : 2020-11-01
Age : 65
Location : Washington

Back to top Go down

TD .051 RC SPEED Empty Re: TD .051 RC SPEED

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top


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