Goldberg EXTRA vs. GP EXTRA .60 ?
 

I want to build my first EXTRA (It will be my 5th kit). For size and convenience I've narrowed my options to the CG Extra and the GP Extra .60 kit. In your opinion what's the better performer ? Is a Magnum XLS .91 2 stroke powerful enough for any of these planes ? (IMAC type routines, no 3D[&:])

Thanks.

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

I tend to prefer the goldberg kits over the great planes, but both are good. That engine should pull either one.

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

I agree with Flyboy. A friend I respected greatly built the goldberg one. Put a 61 in it. It could barely get out of it's own way. flew poorly. put a Supertiger 90 in it. Flew great, looked great also. But he was a superlative builder. Get the Goldberg and your 90 and have fun.

mark Shuman

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

Personally, I think the GP is a much better kit, (I've built both) but the 90 2 stroke might over power it. I had a YS 91AC (4-stroke) in mine, and that was more than enough.

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

Thank you for your replies, guys.
MinnFlyer, I agree with you, GP Kits are better quality than CG ones, fortunately, I'm a very patient builder and my main concern is about performance, you have built them two, in the air, is the GP better than the CG ?

Thanks again.:D

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

I agree. I had both. If you are going to use a .91 then dont go with the Goldberg. It needs a larger engine. It flies good and builds easy but needs more than a .91. I had one with a Super Tiger .91 and it flew ok. Landed very slow and had no bad stall tendencies. I currently have the GP .60 and it flies MUCH better IMO. I have a Saito 1.20 and it has unlimited vertical, lands like a feather and looks alot nicer. It is very easy to build. Most important is to keep it light as possible. The GP Extra came in just under 8lbs.

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

I am on my second GB Extra in the last 12 years or so, and I have the GP Extra. Kit quality, the GP is probably a little better. In the air, the Goldberg is way ahead of it, but it would be marginal with a 90 in it. We fly them with Webra 120 two cycles or TT 120 two cycles, with sparkling performance. I have a Magnum 90 two cycle in the GP Extra, and it is a good power combination with that plane. If you want to do IMAC, go with the Goldberg but try to finesse your way into a larger engine!

Clair

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

First off i really cant say much about the CG kit but i can Praise the GP kit.... i loved building it and it contained great quality wood and acces. The only downer was on my first flight the Ca hinges that came with it failed, so i turned to Nylon pinned hinges and have loved that plane. I modified the tail surfaces to be slightly larger and i installed a Hight torque servo(100 oz) and a pull pull Hd system and dual elevator servos..... ITs a dream to fly.... I havent tried 3d but i dought it would......Get a diff. kit if you want it... I'm pretty sure the CG kit isnt 3d either but i could be wrong... Also witha YS 1.10 Fz in the front it can haul ***** and pull out of a hover pretty quik!! I give that kit a A+++++(i would give it another + but the hinges that were with it were crappy[:@]) OTHER wise I highly recommend the Gp Extra 60 size

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

My Advice. I currently have the GP Extra 300S (60 Size Kit) as my primary airplane. I have seen the CG one and while it flew nice I didn't like how it looked. For some reason it looked "Old". The Mid-Wing of the Goldberg didnt appeal to me. As for the Great Planes Extra it is an excellent build and even better flyer. I power mine with an OS 120 Surpass III (With a 16X8 Mejzlik Carbon Fiber Prop) and it is just about the perfect powerplant. While some may say that it is a bit heavy I did manage to build mine light and balance it with no lead. I moved the elevator servos to the tail to help with balancing it and it prooved to be the exact solution. I also enlarged the rudder and elevator by about 1" each. While it is not a 3D type plane it does excell at IMAC type maneuvers. It does a nice blender and inverted flat spin. Vertical is excellent with the power of the OS and all aerobatics are within the planes envelope (Minus 3D). It lands slow for this type of plane and handles excellent on the ground.

GO WITH THE GP!!!

Phil (Mesa, AZ)

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

What more can I say? I like the GP better in the air too. And I also like the looks of GP's low wing better than Goldbergs mid wing.

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

I currently have two CG's flying. One with Webra 1.20 and the other (that was heavily bashed) flying with a Saito 1.80.

I've never seen the GP flown but I have the kit that will get built later this year.

The one thing I like the best about the CG is not just great flying Characteristics but the shoulder wing look.

Flying it is to fun. I can knife edge up and down the field all day long. LOVE IT! The first one I have is stock and is a TRUE flyer. It is the easiest flying airplane I've ever had. You can slow it to a crawl and then race it down the field. I've learned how to do my first true TQ role with this airplane but really had to crank in the throw to the rudder and elevator.

The one with the saito 1.80 is quite a sight although it really no longer resembles my other extra. It sports an EDGE wing and Extremely over-sized tail. It's AWESOME. Yes the Saito is a little much and would be better with a webra 1.20 or any other 1.20 FS engine. I can come straight down the field pull the elevator full deflection and into a wall, transition into a VERY STABLE Falling leaf with no wing waggle then into a hover/TQ roll.

Unfortunately I will have to agree that GP designs easier building airplanes with better hardware. Two weeks ago I was doing a falling life to the ground and although I landed a little hard it wasn't a hit. But when the wheels touched the ground one side of the landing gear BROKE. YES the Piano wire BROKE at the 90 degree bend going up into the fuse. I had thought I blew out the side of the fuse when it happened because of the way it's designed but after examining it there was NO DAMAGE to the wood at all. ONLY the broke piano wire.

Good Luck ..


Here is a thread I did on my Bashed Extra.
http://www.rcuniverse.com/forum/m_12...tm.htm#1284977

Blue Extra is the one with webra 1.20 Stock

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

Thank you for all your inputs, the GP Extra seems to be the better plane, I think I'll go for it, BTW, are there some mods. you would suggest ?

Regards.

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

Try this link

http://www.rcuniverse.com/forum/m_10...tm.htm#1062376

I made these changes and they are easy and well worth it!! Mine will knife edge all day at 1/2 throttle and 1/2 rudder deflection. It does FLAT flat spins and excellent Lomcevaks with the increased elevator surface. Install a pull-pull on the rudder (very easy) and use a high torque servo and you will be set. I also put 2 servos in the tail for the elevators and didnt have to add any weight at all..even with a Saito 1.20 in the nose

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

I have built A Golberg kit but it was an old stok from a local hobbie store in Manila and it came with the plastic cowling and wheel pants. The cowling just doesnt fit properly I tried to fit it by heating and it was ruined compleatly, beyond repair. I need to order a fiberlass one, can any one give me an e mail address were I can order one in the US. The rest of the kit is good exept for the landing gear if you have one buy Dural landing gear. The engine I fited is an RCV 120 if any one is interested in learning some nice tips for improving the stater shaft and fiting tis engine well, it will be compleatly enclosed. A must for those engines is to change the carburator the one supplied is not worthy of that engine.

Federico Vasquez

RE: Goldberg EXTRA vs. GP EXTRA .60 ?
 

http://www.stansfibertech.com/ is supposed to be the best.