Kit Building If you're building a kit and have questions or want to discuss kit building post it here.

Goldberg Extra 300

Reply

Old 03-20-2005, 12:19 AM
  #51  
tigil
Senior Member
 
tigil's Avatar
 
Join Date: Nov 2003
Location: Estrie, QC, CANADA
Posts: 322
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300


ORIGINAL: Redrata

Some progress. The rudder will have more authority, also ailerons, it was a 3D kind of modification.
Hi Redrata ! I made the same mod of my rudder on my Cg Extra and I want to know if a need to put more then 3 Robart hinges because the rudder is a lot bigger
tigil is offline  
Reply With Quote
Old 03-20-2005, 01:00 PM
  #52  
plasticjoe
My Feedback: (22)
 
plasticjoe's Avatar
 
Join Date: Aug 2002
Location: Huber Heights, OH
Posts: 339
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

Anyone want to buy a 3 pc ABS cowl for the Goldber Extra 300, PM me here. I have one
plasticjoe is offline  
Reply With Quote
Old 03-21-2005, 09:48 PM
  #53  
plasticjoe
My Feedback: (22)
 
plasticjoe's Avatar
 
Join Date: Aug 2002
Location: Huber Heights, OH
Posts: 339
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

I have a 3 pc cowl for sale if anyone is interested, PM me
plasticjoe is offline  
Reply With Quote
Old 03-21-2005, 11:30 PM
  #54  
Airdale CPO
Senior Member
My Feedback: (3)
 
Join Date: Mar 2003
Location: Broken Arrow, OK
Posts: 131
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

Can anyone help me with the measurement of the firewall to engine thrust washer?
Airdale CPO is offline  
Reply With Quote
Old 03-22-2005, 05:55 PM
  #55  
BedfordBob
Member
My Feedback: (1)
 
Join Date: Oct 2004
Location: Bedford, TX
Posts: 31
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

Hey Airdale,

Built the cowl from the three parts. Fit it to the plane with the engine. Then get some medium weight fibreglass cloth and ZPoxy finishing resin. Roughen the inside of the cowl with sandpaper and put two layers of cloth in convenient pieces covering the complete inside of the cowl.

It's a fun project and has worked well for me. If you bust up that cowl in a crash you can replace it with a fibreglass one.

Bob
BedfordBob is offline  
Reply With Quote
Old 03-22-2005, 07:04 PM
  #56  
rcpete347
My Feedback: (251)
 
rcpete347's Avatar
 
Join Date: Jan 2002
Location: Bolton, ON, CANADA
Posts: 2,419
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

HI all, I have built 6 CG 300's and I'm just about ready to cover my newest back up plane. I love flying my 300 with a Saito 180 turning a 16/10 prop. I feel their is no need to enlarge the rudder, just add more throw and use a 100 oz servo, I can knife edge all around the field , that really impressess the other flyers I use a 16 oz tank for fuel and pce the tank pretty close to the CG. I use 2 servos in the tail for the elevator and a 1400 mah battery and everything balances.
I also place some carbon fiber on the weakes place on the plane, I"ve had it snap in half on a not so hard landing.
Rcpete
Attached Thumbnails Click image for larger version

Name:	Pn37286.jpg
Views:	208
Size:	34.7 KB
ID:	247694   Click image for larger version

Name:	Fc90472.jpg
Views:	195
Size:	29.2 KB
ID:	247695   Click image for larger version

Name:	Ki19674.jpg
Views:	203
Size:	30.1 KB
ID:	247696   Click image for larger version

Name:	Qo41004.jpg
Views:	194
Size:	35.2 KB
ID:	247697  
rcpete347 is offline  
Reply With Quote
Old 03-23-2005, 11:16 PM
  #57  
plasticjoe
My Feedback: (22)
 
plasticjoe's Avatar
 
Join Date: Aug 2002
Location: Huber Heights, OH
Posts: 339
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

Here's Mine all finished... picking up some wheel pants in Toledo next friday. Has a Tupertigre .91 and JR radio. Used a 13 ounce graupner tank in it. What prop should I use on it ? Suggestions ? I just tossed on a prop for the pics so it would look ok. Need to run a tank or 2 thru the motor and give it a shot here soon !
Attached Thumbnails Click image for larger version

Name:	Fd93318.jpg
Views:	156
Size:	68.0 KB
ID:	248258   Click image for larger version

Name:	Sn40751.jpg
Views:	170
Size:	66.8 KB
ID:	248259   Click image for larger version

Name:	Lq37231.jpg
Views:	156
Size:	39.9 KB
ID:	248260   Click image for larger version

Name:	Wp41439.jpg
Views:	174
Size:	73.0 KB
ID:	248261  
plasticjoe is offline  
Reply With Quote
Old 03-24-2005, 01:26 AM
  #58  
Dauntae
Senior Member
 
Join Date: Jun 2002
Location: New Bedford, MA
Posts: 1,212
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

Looks real good, I am close to mine being flight ready too, Still waiting for the new RX to come in, I have a Saito 150 in mine.

Dauntae
Attached Thumbnails Click image for larger version

Name:	Ge94839.jpg
Views:	161
Size:	76.9 KB
ID:	248311  
Dauntae is offline  
Reply With Quote
Old 04-06-2005, 08:19 PM
  #59  
mnrcaerobat
Senior Member
My Feedback: (197)
 
Join Date: Oct 2003
Location: Minnetonka, MN
Posts: 1,249
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

[quote]ORIGINAL: rcpete347

HI all, I have built 6 CG 300's and I'm just about ready to cover my newest back up plane. I love flying my 300 with a Saito 180 turning a 16/10 prop. I feel their is no need to enlarge the rudder, just add more throw and use a 100 oz servo, I can knife edge all around the field , that really impressess the other flyers I use a 16 oz tank for fuel and pce the tank pretty close to the CG. I use 2 servos in the tail for the elevator and a 1400 mah battery and everything balances.
I also place some carbon fiber on the weakes place on the plane, I"ve had it snap in half on a not so hard landing.
Rcpete

RC Pete,

Do you have a picture of your tail elevator servos? I need to mount mine in the tail. I am anxiously looking forward to this plane.
mnrcaerobat is offline  
Reply With Quote
Old 04-12-2005, 11:04 PM
  #60  
mnrcaerobat
Senior Member
My Feedback: (197)
 
Join Date: Oct 2003
Location: Minnetonka, MN
Posts: 1,249
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

I need some advice on the fuel tank for this plane. Can anyone tell me what you are using for a fuel tank? It seems to be tight.
mnrcaerobat is offline  
Reply With Quote
Old 04-13-2005, 02:06 AM
  #61  
Dauntae
Senior Member
 
Join Date: Jun 2002
Location: New Bedford, MA
Posts: 1,212
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

I used a Graupner 17.5 oz GR237 and it fits perfect with no mods, A bit pricey but fits great
http://www.hobby-lobby.com/fueltank.htm

Dauntae
Dauntae is offline  
Reply With Quote
Old 04-13-2005, 05:33 AM
  #62  
plasticjoe
My Feedback: (22)
 
plasticjoe's Avatar
 
Join Date: Aug 2002
Location: Huber Heights, OH
Posts: 339
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

I bought a 13 ounce one from Hobby Lobby, a graupner one. It fits nicely in the space
plasticjoe is offline  
Reply With Quote
Old 04-15-2005, 07:42 PM
  #63  
mnrcaerobat
Senior Member
My Feedback: (197)
 
Join Date: Oct 2003
Location: Minnetonka, MN
Posts: 1,249
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

I maidened my Extra yesterday, and put three more flights on it today. It is really a great flying plane. I ordered the Graupner tank from Hobby Lobby. I am using an MDS 1.48 (17x8 apc) for power. This gives me unlimited vertical.

Does anyone have a good suggestion for some landing gear to keep this plane from nosing over?
mnrcaerobat is offline  
Reply With Quote
Old 04-23-2005, 09:34 PM
  #64  
Ayrtonsenna
Senior Member
My Feedback: (1)
 
Join Date: Dec 2004
Location: New Zealand
Posts: 398
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

Hi Guys,
I've just brought my self a damaged CG Extra 60, which I'm rebuilding, one question though, who covers, and who paints.

The original model was covered then painted, its just that I've always covered my models in solar film.

Pros and cons of both??


Thanks for any help

The loan Kiwi!
Antony.
Ayrtonsenna is online now  
Reply With Quote
Old 04-27-2005, 08:15 AM
  #65  
Airdale CPO
Senior Member
My Feedback: (3)
 
Join Date: Mar 2003
Location: Broken Arrow, OK
Posts: 131
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

Question about engine installation. I am going to install a YS 120 with a pitts style muffler. I was planning on installing it inverted but looking at some of the pics with engine installations, they are all at a 90. Will there be a problem mounting inverted?
Airdale CPO is offline  
Reply With Quote
Old 04-30-2005, 08:37 AM
  #66  
tigil
Senior Member
 
tigil's Avatar
 
Join Date: Nov 2003
Location: Estrie, QC, CANADA
Posts: 322
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300


ORIGINAL: rcpete347

HI all, I have built 6 CG 300's and I'm just about ready to cover my newest back up plane. I love flying my 300 with a Saito 180 turning a 16/10 prop. I feel their is no need to enlarge the rudder, just add more throw and use a 100 oz servo, I can knife edge all around the field , that really impressess the other flyers I use a 16 oz tank for fuel and pce the tank pretty close to the CG. I use 2 servos in the tail for the elevator and a 1400 mah battery and everything balances.
I also place some carbon fiber on the weakes place on the plane, I"ve had it snap in half on a not so hard landing.
Rcpete
I put a YS 120 in mine with 17.5 oz fuel tank the final weight is 9.9 pound am scared about landing because am overweight
can you tel me how long you can run your Saito 180 with your 16 oz and tel me how are your landing with this big engine (I think your nearly 10 pounds)

last summer I had a less weight engine without glow driver and my plane weight was 9.2 and the landing was like a trainer and now am scared about lost this nices flying caracteristics
am from Granby Canada
tigil is offline  
Reply With Quote
Old 04-30-2005, 08:46 AM
  #67  
tigil
Senior Member
 
tigil's Avatar
 
Join Date: Nov 2003
Location: Estrie, QC, CANADA
Posts: 322
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300


ORIGINAL: mnrcaerobat

I need some advice on the fuel tank for this plane. Can anyone tell me what you are using for a fuel tank? It seems to be tight.
I use a Graupner 17.5 oz and fit perfecly
tigil is offline  
Reply With Quote
Old 05-02-2005, 03:36 PM
  #68  
mnrcaerobat
Senior Member
My Feedback: (197)
 
Join Date: Oct 2003
Location: Minnetonka, MN
Posts: 1,249
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

my plane is also near 10 pounds and it lands nicely.
mnrcaerobat is offline  
Reply With Quote
Old 07-14-2005, 05:32 PM
  #69  
tigil
Senior Member
 
tigil's Avatar
 
Join Date: Nov 2003
Location: Estrie, QC, CANADA
Posts: 322
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

dont use tnt carbon landing gear mine it broke at the first landing and TNT dont reponse to my mail about the guarantee
probuilt made a better stuff try it
tigil is offline  
Reply With Quote
Old 07-16-2005, 07:52 PM
  #70  
Navy18
My Feedback: (4)
 
Join Date: Oct 2002
Location: mason, OH
Posts: 559
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

Loved mine until an aileron lead came loose.... hard way to learn. Great plane..... OS1.08
Attached Thumbnails Click image for larger version

Name:	Ro41796.jpg
Views:	186
Size:	107.0 KB
ID:	297987  
Navy18 is offline  
Reply With Quote
Old 07-17-2005, 09:22 PM
  #71  
poodle
Member
 
Join Date: Jun 2004
Location: Breckenridge, TX
Posts: 31
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

I built one around 8 years ago, and I trashed the abs cockpit that came with it and built one out of balsa, much neater and better. I also second the two servos in the wing and on elevators. I also run a 1/4 scale Hitec servo on the rudder. Have had to replace the rudder servo once, and one of the elevator servos. Sure was thankful there were two on the elevator. I have aluminum gear and fiberglass cowl. Running a ST.75 with a Slimline muffler off of a ST.90. The .75 seems to have more power than the .90 ever had.
poodle is offline  
Reply With Quote
Old 07-19-2005, 03:07 PM
  #72  
RVator
My Feedback: (1)
 
Join Date: Jan 2003
Location: Wingina, VA
Posts: 722
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

I have an old CG extra 300 that I got from a club member. He flew it with a YS 120. I used a 1.08 Mag with a 15x8. It flew great and had good power but the Mag was very unreliable. It had many air leaks and always deadsticked. I pulled it off and need a new motor. How is the ST 90's and what prop? I don't want another poor running Chinese engine and are the new ST any good. I love the way it flys and would like to build another one after my Skybolt is done.
RVator is offline  
Reply With Quote
Old 07-20-2005, 10:35 AM
  #73  
Ken-h
My Feedback: (3)
 
Ken-h's Avatar
 
Join Date: Oct 2004
Location: Fairfield, MT
Posts: 660
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

I had my Extra for 13 years before selling it to a club member. There is not a finer 60-size acrobat on the market in my opinion. This first aircraft I recommend to anyone who wants to learn precision acrobatics. Dave Patrick has some of the best aerobatic designs out there and his recommendations are solid.

These airplanes fly well even at 10 pounds. However, 8 ½ pounds and under is really where this airplane shines. Mine was just a tad over 7 ½ pounds and used an OS91 FS for power. At that weight the performance was close to unlimited.

The ABS cowl will fall apart over time but is light compared to the fiberglass ones available, choose wisely. I had a fiberglass cowl on mine from RC city and was really light and thin, but the company is out of business now.

Not much help on the nose over issues other than mounting the gear more forward if that’s even possible. If I remember, the gear was almost as far forward as it could go. I just used lots of up elevator and quick bursts of throttle when in the higher grass. You may want to check [link=http://www.fiber-lite.com/]Fiber-Lite [/link] for gear. They make gear for other airplanes that may fit the Extra.

As mentioned before, Gruapner makes square tanks that fit right in without shoehorning them in. Keep this airplane light and avoid adding extra goodies and this airplane will treat you right. I have a new one still in the box I’ll be converting to 3d with likely a YS 110 when I get some other projects done.

Ken
Ken-h is offline  
Reply With Quote
Old 10-20-2005, 03:34 PM
  #74  
Wulf
Senior Member
My Feedback: (5)
 
Wulf's Avatar
 
Join Date: Feb 2003
Location: PENTWATER, MI
Posts: 363
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

Anybody --I`m ready to paint my CG Extras canopy-What is a good paint for this task--And do you paint the inside or outside?
Attached Thumbnails Click image for larger version

Name:	Om34301.jpg
Views:	215
Size:	67.2 KB
ID:	341676  
Wulf is offline  
Reply With Quote
Old 10-21-2005, 03:10 AM
  #75  
Dauntae
Senior Member
 
Join Date: Jun 2002
Location: New Bedford, MA
Posts: 1,212
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Goldberg Extra 300

I Painted the inside, It actually makes it shine with the clear plastic on the outside so the paint matched the Monokote a little better.

Dauntae
Dauntae is offline  
Reply With Quote

Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service