stunthanger.com
News:
 
 
*
Welcome, Guest. Please login or register. August 30, 2014, 10:16:44 PM


Login with username, password and session length



Pages: [1]   Go Down
  Send this topic  |  Print  
Author Topic: Goldberg Shoestring Stunter  (Read 4063 times)
Tony Vitiello
Trade Count: (0)
New Pilot
*
Offline Offline

Posts: 9


« on: August 19, 2010, 10:41:24 PM »

I had a Goldberg Shoestring Stunter 30 years ago as a kid and still have it on display on the wall in my workshop.  I decided to build a new one to fly so I found an original Goldberg kit on Ebay and built it just like my original.  Only difference is a 25LA instead of a K&B 40 on the old one.

I flew it for the first time this evening and it flew very nice.  I hope to learn stunting as I never really did much with this plane as a kid other than fly around in circles. 

I've been in RC for the past 30 years and still enjoy it (see my 40% Carden Edge in the background) but I hope to get into CL Stunt and get some of my RC buddies converted as well.


* DSC01702.JPG (558.11 KB, 1280x960 - viewed 459 times.)
Logged

wwwarbird
Server Supporter
Trade Count: (0)
Admiral
*
Offline Offline

Age: 50
Location: Albert Lea, MN
Posts: 4461


Welcome to the Stunt Hanger.


« Reply #1 on: August 19, 2010, 10:53:02 PM »

 Welcome back Tony. As long as the weight of the model is within reason, the Shoestring will like the .25 much more than the ol' K&B. The K&B would have been a very heavy engine for the Shoestring, and a lot more power than it really needs. I still feel that a well built, straight Shoestring is one of the best all around models for a sport/stunt flier. I still have one myself that I fly on occasion Have fun! Hoff
Logged

Narrowly averting disaster since 1964!     Real model airplanes drip oil!

Wayne Willey
Albert Lea, MN U.S.A.
AMA #776548
Tony Vitiello
Trade Count: (0)
New Pilot
*
Offline Offline

Posts: 9


« Reply #2 on: August 19, 2010, 11:03:47 PM »

Well it felt light when I flew it but it remains to be seen how it does for learning stunt.  I'm sure the weakest link will be me.  I was on the rich side with it being a new engine and it still felt like it had good pull on the lines.

You are absolutely right on the K&B 40.  It was too much power and pretty heavy.  I did still have to add some lead to the tail with the 25LA though.  I was hoping with a lighter engine not to have to do that. 

I also have a Brodak kit of the Shoestring that I will start on next.  It will probably be lighter as the wing is a lighter design.  Based on my recent track record of learning stunts with my old 1/2A Goldberg Swordsman, I may need a few backup planes in the learning process.  I shope the bigger airframe and more consistent engine will be easier to learn with.
Logged
Robert Zambelli
2014 Supporters
Trade Count: (0)
Captain
*
Offline Offline

Posts: 896



« Reply #3 on: August 20, 2010, 05:41:09 AM »

Hi, Tony - WELCOME BACK!!!   y1

I was out of Model Aviation for 22 years. Then I found an old Shoestring at a private sale. With an old Fox 29, I was able to get back into the U/C groove.

Enjoy the plane!   

                            Bob Z.
Logged
David Shad
Trade Count: (0)
Commander
****
Offline Offline

Age: 61
Location: 31093
Posts: 166



« Reply #4 on: August 20, 2010, 06:12:52 AM »

My Brodak Shoestring is 28ozs. with an LA .25 ready to fly...I could probably
have shaved a couple more ozs off that but this is a fun plane no matter what
and like you I had one as a kid...with a McCoy .35 on it...what a brick!!! LOL.

Once that LA breaks in mine did the whole pattern with ease...looks good doing
it too.  Thats a complete Polyspan and Brodak dope finish too.  3 oz. uniflow on
60 ft. lines.
Logged

Big Dave AMA 80235
Paul Taylor
Moderator
Trade Count: (0)
Admiral
*****
Online Online

Posts: 4865


If God is your Co-pilot - swap seats!


Flybywires@yahoo.com rootbeard
WWW
« Reply #5 on: August 20, 2010, 07:12:05 AM »

Looks Great Tony!!!

Keep us posted, and Welcome Back!
Logged

Paul Taylor Hoff
Just outside of Memphis, Tn.
AMA 842917

IF YOU DON'T STAND BEHIND OUR TROOPS, FEEL FREE TO STAND IN FRONT OF THEM!

1 Corinthians 13:13
And now these three remain: faith, hope and love. But the greatest of these is love.
http://www.biblegateway.com/passage/?search=1+Corinthians+13%3A13&version=50&src=embed
wwwarbird
Server Supporter
Trade Count: (0)
Admiral
*
Offline Offline

Age: 50
Location: Albert Lea, MN
Posts: 4461


Welcome to the Stunt Hanger.


« Reply #6 on: August 20, 2010, 11:05:35 AM »

 Make sure you at least try flying it without the added tail weight. Basically ignore the CG on the plans, just trim it to your liking. y1
Logged

Narrowly averting disaster since 1964!     Real model airplanes drip oil!

Wayne Willey
Albert Lea, MN U.S.A.
AMA #776548
proparc
Trade Count: (0)
Admiral
******
Offline Offline

Location: Round Rock,Texas
Posts: 1930


« Reply #7 on: August 20, 2010, 11:34:48 AM »

I've been in RC for the past 30 years and still enjoy it (see my 40% Carden Edge in the background) but I hope to get into CL Stunt and get some of my RC buddies converted as well.

Show us that 40% Carden Edge!! No offense to the Shoestring but, that big Carden looks hot!

By the way, a president of a local RC club here in Socal has told me that, practically all of his members are taking up CL again. Seems that most of them started out in CL and they want to relive the "good old days".
Logged

Milton "Proparc" Graham
Phil Spillman
Trade Count: (0)
Commander
****
Offline Offline

Age: 76
Location: Lancaster, PA
Posts: 243


« Reply #8 on: August 20, 2010, 11:56:09 AM »

 Hi Tony, And welcome back to UC Flying! Much as developed over the past 30 or so years and one of the more positive developments has been the introduction of a new magazine entirely dedicated to Control Line in all of its manifestations! The magazine is Control Line World and is published by John Brodak! The subscription rate is only $25.00 per year and is very worthwhile for the price charged. Check out the web site at www.FlyIn@Brodak.com! They also have a web site which shows a wide array of UC planes and accessories! 

TallyHo

Phil Spillman
Logged

Phil Spillman
Ty Marcucci
2014 Supporters
Trade Count: (0)
Admiral
*
Offline Offline

Age: 73
Location: Huntsville, AL
Posts: 7452



« Reply #9 on: August 20, 2010, 03:28:45 PM »

Hi Tony.  Welcome back to real flying.   y1  I have gone through about six or seven Goldberg Shoestring Stunters. Even gave a few away. Nice flying plane for learning, rugged too.  The Brodak version is much easier to assemble than the Goldberg version, better cut parts, etc.  Any good .19 to .35 is plenty of power for them, with 60 foot lines.
One thing I did on a few was to line the top of the rudder with thin ply about 1/2 inch, plus a thin section of ply on the top of the canopy and a 1/8th inch wire "U" at the needle valve. This kept things intact while learning to go inverted. Inverted landings were such that the plane survived many, many such "landings"... FWIW.   Hoff
Logged

Ty Marcucci
Bill Morell
2013 Supporter
Trade Count: (0)
Captain
*
Online Online

Age: 60
Location: Ontario, California
Posts: 461



« Reply #10 on: August 20, 2010, 05:05:04 PM »

Another thing that I have done was to discard the 1/8" sheet stab and build mine up from 3/8" with ribs. 3/8" might sound a little thick but by the time you sand it all down you are back at 1/4". You can airfoil the stab this way. Don't know if it actually flies any better but it sure looks better.
« Last Edit: August 20, 2010, 10:09:31 PM by Bill Morell » Logged

Bill Morell

Better to have it and not need it than it is to need it and not have it.
Garf
SH Supporter
Trade Count: (0)
Admiral
*
Online Online

Location: Miami.
Posts: 1457



WWW
« Reply #11 on: August 20, 2010, 06:07:53 PM »

I had a Shoestring Stunter in the old days with a Fox 35S. It was always one of my favorites. I just picked up a used Shoestring that used for racing. I need to lighten it a little, then recover and refinish it. but it should do well. What is a good covering material short of silk. There must be a replacement for silkspan.
Logged

Ty Marcucci
2014 Supporters
Trade Count: (0)
Admiral
*
Offline Offline

Age: 73
Location: Huntsville, AL
Posts: 7452



« Reply #12 on: August 20, 2010, 07:57:00 PM »

Use polyspan.  Goes on like silk only dry, shrinks like plastic, which it kinda is.  Stays tight in heat. Tom Morris sells it.  Hoff
Logged

Ty Marcucci
Tony Vitiello
Trade Count: (0)
New Pilot
*
Offline Offline

Posts: 9


« Reply #13 on: August 20, 2010, 11:41:34 PM »

Show us that 40% Carden Edge!! No offense to the Shoestring but, that big Carden looks hot!

By the way, a president of a local RC club here in Socal has told me that, practically all of his members are taking up CL again. Seems that most of them started out in CL and they want to relive the "good old days".

Well the nostalgia is certainly is certainly the main thing that brought me back to control line.  The 40%er is always fun to fly but I have to say I'm more nervous flying my new Shoestring.  Every new stunt you try is down low with control line and there is no simulator to practice with.  I enjoy the challenge and I'm sure I'll tear up several planes learning stunt. 

The picture is from my local flying field which is Buder Park in the St Louis area.  Some of you guys might know the field because we have a control line area as well as RC.  It is a 40% Carden Edge which took over a year to build.  The Shoestring took about 2 weeks and that was taking my time rather than slapping it together in 3 days like I did when I was a kid.

Thanks for the tips on the Shoestring.  I may try removing some tail weight.  In RC I know how to trim a plane for CG but its a bit different with CL.  It certainly didn't feel nose heavy on landing but if I start removing tail weight, how will I know when I've gone too far?  Having to hold more up on landings? 



* edge1.jpg (293.18 KB, 640x480 - viewed 234 times.)
Logged
SteveMoon
2013 Supporter
Trade Count: (0)
Captain
*
Offline Offline

Age: 51
Location: Dallas
Posts: 562



WWW
« Reply #14 on: August 21, 2010, 07:19:16 AM »

Tony: Your Shoestring looks great. My son's had a couple of them
and they are great little planes. I love the big Carden, too!

Later, Steve
Logged

Bill Little
Moderator
Trade Count: (0)
Admiral
*****
Offline Offline

Age: 63
Location: Aberdeen, NC 28315-2538
Posts: 12315


Second in COMMAND


« Reply #15 on: August 21, 2010, 08:42:09 AM »

Quote
Thanks for the tips on the Shoestring.  I may try removing some tail weight.  In RC I know how to trim a plane for CG but its a bit different with CL.  It certainly didn't feel nose heavy on landing but if I start removing tail weight, how will I know when I've gone too far?  Having to hold more up on landings?

Hi Tony,

My first *big* plane was the Shoestring with a McCoy 19 Red Head.  I loved it! Grin

When learning stunt, it is easier (in some people's opinion) to fly slightly nose heavy. Maybe, maybe not....  As you are aware, if the plane is tail heavy, it will be difficult to control.  Sounds like that is not the case since you have flown it successfully.

A way to judge tail heavy is if the model drops its tail when the engine quits.  If you are not having trouble flying it as is, I wouldn't bother.  Just try to be smooth and open up the maneuvers when you are learning.  Most tend to fly WAY too small when they are beginning to fly stunt.  And a great way to learn inverted flight is to start with "lazy 8s" and keep flying the inverted part of the 8 longer and longer until you are flying laps inverted.

Big Bear
Logged

Big Bear <><

Aberdeen, NC

James Hylton Motorsports/NASCAR/ARCA

AMA 95351 (got one of my old numbers back! Grin )

Trying to get by
Kim Mortimore
2013 Supporter
Trade Count: (0)
Captain
*
Offline Offline

Posts: 632


« Reply #16 on: August 21, 2010, 09:11:00 AM »

Hi Tony,

Very nice work!  Sounds like you have the makings of a jim dandy stunt builder and pilot.  Do you have an experienced flying buddy who can give you a hand?  Bill is right about CG and control sensitivity (too far forward and the controls become sluggish and unresponsive), and about learning outside loops the easy way (best not to try it by the "kamikaze" method--climbing up high and then diving toward the ground--KERSPLAAAAAAATTTT!!!).  Also, have you glued the tail on the new Brodak kit plane yet?

Happy flying!
« Last Edit: August 21, 2010, 09:30:52 AM by Kim Mortimore » Logged

Kim Mortimore
Santa Clara, CA
Ty Marcucci
2014 Supporters
Trade Count: (0)
Admiral
*
Offline Offline

Age: 73
Location: Huntsville, AL
Posts: 7452



« Reply #17 on: August 21, 2010, 09:15:03 AM »

If you are flying at Buder park then you should have lots of help.  I lived in St Louis for 17 years and did mucho flying at Buder, when it wasn't under water  y1 Layingdown
Logged

Ty Marcucci
Tony Vitiello
Trade Count: (0)
New Pilot
*
Offline Offline

Posts: 9


« Reply #18 on: August 21, 2010, 09:47:33 AM »

My thoughts are the CG is that it's good.  Not too sensitive in flight and did not pitch up when dead stick.  Although I haven't even looped this plane yet (1 flight so far with brand new motor and chicken...lol), I have been practicing with my 1/2A Swordsman 18.  The advice about flying bigger is right on as I was basically on the verge of stalling or at least looping so tight as to loose airspeed.  I had a buddy who flies RC and CL watch me and advised to make the loops larger.  I've been doing long lazy 8's and flying a few laps inverted with the 1/2A but it is far from smooth.  The part that was rough was pushing back from inverted to upright.  I though it was due to the plane but my buddy flew it and although it didn't look as good as a bigger plane, he certainly showed me it was more capable than I thought.

I plan to take the Shoestring to Buder tomorrow morning as it seems the CL guys tend to fly most Sundays.  I'm glad to see everyone so helpful.  I try to be as helpful with folks new to RC but it's been a while since I was on the receiving side so much.  Thanks!

By the way, I weighed it all up without fuel and it is exactly 32 oz.  I know one guy above built a Brodak down to 28 oz but it still felt light to me at 32 oz in the air.  I may switch out the wheels to lighter foam ones and lose a little tail weight which would shave a couple oz's. 
« Last Edit: August 21, 2010, 11:23:29 AM by Tony Vitiello » Logged
john e. holliday
2014 Supporters
Trade Count: (0)
Admiral
*
Offline Offline

Age: 72
Location: Shawnee, KANSAS 66203-2379
Posts: 14632



« Reply #19 on: August 21, 2010, 11:10:50 AM »

Glad to hear you are having fun again.  Been to Buder many times since the 70's flying competition of different sorts.  Was mainly carrier and racing then got to flying stunt.  You have a great bunch of guys down there.  Watch out for Sparky and Dan M.  They will have you flying the pattern before the first frost of the year. 
Logged

We never really grow up, we only learn how to act in public.

We are never too old to learn something stupid.

Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530
scott matthews
Trade Count: (0)
Commander
****
Offline Offline

Posts: 126


« Reply #20 on: August 21, 2010, 03:41:57 PM »

Hi Tony  Your plane looks great I hope you are reliving the good old days of control line.I can relate to your story because I have been out of the hobbie for the last 20 years raising 2 daughters.This is the first summer back for me and I've only done a couple of flights ( girls don't get a big charge out of helping dad fly).I am working on a 59 Ares for the past couple months and flying a 10 year old ringmaster. Good luck with your plane .Scott                                       
Logged
Garf
SH Supporter
Trade Count: (0)
Admiral
*
Online Online

Location: Miami.
Posts: 1457



WWW
« Reply #21 on: August 21, 2010, 08:43:48 PM »

Use polyspan.  Goes on like silk only dry, shrinks like plastic, which it kinda is.  Stays tight in heat. Tom Morris sells it.  Hoff
I checked on Polyspan. It's a problem on tips. I have trouble with  Monokote on tips. Is there anything better out there?
Logged

Dan McEntee
Trade Count: (0)
Admiral
******
Online Online

Age: 58
Location: St. Louis, MO
Posts: 1109


« Reply #22 on: August 21, 2010, 09:24:11 PM »


I plan to take the Shoestring to Buder tomorrow morning as it seems the CL guys tend to fly most Sundays.  I'm glad to see everyone so helpful.  I try to be as helpful with folks new to RC but it's been a while since I was on the receiving side so much.  Thanks!
ote]
   Hi Tony;
 Yes, some of us plan on being there in the morning. Usually someone sends out a group email Friday or Saturday to see who is free on Sunday morning. But sometimes the weekday evenings and weekend evenings work out better for some guys. If you are retired, there is a group of guys that fly free flight, 1/2A Texico, and some C/L on Tuesdays during the day. The C/L club is the Lafayette Esquadrille, and is a great bunch of laid back guys. Having fun is the name of the game, and your in the right place. y1
  Type at you later,
  Dan McEntee
Logged

AMA 28784
EAA  1038824
AMA 480405 (American Motorcyclist Association)
Jim Kraft
2013 Supporter
Trade Count: (0)
Admiral
*
Offline Offline

Age: 73
Posts: 2021


AMA78415


« Reply #23 on: August 22, 2010, 06:10:52 AM »

Hey Tony; I got back in to C/L about 18 years ago, after flying R/C pattern for 25 years. I still fly a little R/C, but mostly C/L. I found that scraping the ground with a C/L model was more exciting than R/C. LOL.  I am glad you have a good place to fly, and some great guys to fly with. I belong to the R/C club in Salina Ks., but I am the only one that fly's C/L there. There are a couple of others that fly C/L once in a while, but mostly R/C. I hope you enjoy flying C/L as much as I have the last few years, and since you are one of the few R/C builders left, you will have no trouble building great C/L models. You are going to love it. May our tribe increase.
Logged

Jim Kraft
john e. holliday
2014 Supporters
Trade Count: (0)
Admiral
*
Offline Offline

Age: 72
Location: Shawnee, KANSAS 66203-2379
Posts: 14632



« Reply #24 on: August 22, 2010, 12:00:23 PM »

I checked on Polyspan. It's a problem on tips. I have trouble with  Monokote on tips. Is there anything better out there?

Good hot air gun takes about 99% of the wrinkles on on my Poly-span on tips and compound curves. 100% on the flat surfaces.  If not careful will get a hole once in a while.   Hoff
Logged

We never really grow up, we only learn how to act in public.

We are never too old to learn something stupid.

Today I broke my personal record for most consecutive days lived.
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530
W.D. Roland
AMA Member and supporter
Trade Count: (0)
Admiral
*
Offline Offline

Location: central louisiana
Posts: 1170



« Reply #25 on: August 22, 2010, 02:36:10 PM »

Welcome Back Tony!

Love Shoestrings! have 3 for C/L and 1 R/C.

I got back into C/L about 3 years ago and sofar more enjoy than last 30yrs of R/C!

You came to the right place here! LOTS and lots of good help.

David
Logged

David Roland
51336
Tony Vitiello
Trade Count: (0)
New Pilot
*
Offline Offline

Posts: 9


« Reply #26 on: August 22, 2010, 07:01:00 PM »

Hey Tony; I got back in to C/L about 18 years ago, after flying R/C pattern for 25 years. I still fly a little R/C, but mostly C/L. I found that scraping the ground with a C/L model was more exciting than R/C. LOL.  I am glad you have a good place to fly, and some great guys to fly with. I belong to the R/C club in Salina Ks., but I am the only one that fly's C/L there. There are a couple of others that fly C/L once in a while, but mostly R/C. I hope you enjoy flying C/L as much as I have the last few years, and since you are one of the few R/C builders left, you will have no trouble building great C/L models. You are going to love it. May our tribe increase.

Yes, I enjoy building.  It is half the fun for me even though my time is limited.  I have another Carden (Extra 300 this time) on the building board but I can knock out several CL planes in the middle of the Carden build. 

Dan McEntee helped me out today and I got a couple flights in.  Did some ugly loops but I know what the problem is.  I just need to practice more.  Thanks for the help Dan!
Logged

Tags:
Pages: [1]   Go Up
  Send this topic  |  Print  
 
Jump to:  


Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2013, Simple Machines

Valid XHTML 1.0! Valid CSS! Dilber MC Theme by HarzeM