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Great Planes Giant Extra 330L KIT build

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Great Planes Giant Extra 330L KIT build

Old 08-03-2012, 12:41 PM
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Default RE: giant extra 330l kit build


ORIGINAL: Sivadoc

Got three flights last evening. This plane gets better and better. Have a three-blade Biela 24X10 on a Zenoah 80 twin - think that prop is a bit too big. Will try 24X8 or 24X10 two-blade.

What a plane

Very nice looking plane!
Old 08-03-2012, 12:49 PM
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Default RE: giant extra 330l kit build

Thank you! Will post some video later. Had a cameraman with me last time, but he couldn`t hold the camera still[X(]

I actually like this plane better than any of my ARF`s. It handles wind extremely well, and I enjoy flying some good old aerobatics. Been a little too much of the hysterical 3D lately[X(]
Old 08-04-2012, 03:58 AM
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Default RE: giant extra 330l kit build

Great looking 330. I would suggest a 24-10 as your next prop for try out on your GT-80. Looking forward to the video.
Old 08-05-2012, 03:28 AM
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Default RE: giant extra 330l kit build

Actually i have one of these kits being constructed at the moment. Would you mind posting a pic of any engine baffling and hot air exhaust you have? Thanks.
Old 08-05-2012, 05:44 AM
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Default RE: giant extra 330l kit build

I will post some pictures tomorrow:-)
Old 08-07-2012, 06:20 AM
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Default RE: giant extra 330l kit build

Too much to do at work last days, but I finally got the time to take some pictures..

No baffling on this one, because I live i Norway - no need :-) Plenty of space for air to com out under the cowling, though. Took som pictures all round, but if there is a specific area just ask and I`ll take more photos

If I was to build a second kit i would build wing keeping bolts to fasten inside the fuselage, like on most ARFs today. I don`t like the screws through the wing and into the wingtube.
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Old 08-07-2012, 07:44 AM
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Default RE: giant extra 330l kit build

Great pictures. Thank you! I agree with you on the wing bolts. Did you have any problems getting the proper CG set?
Old 08-07-2012, 09:06 AM
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Default RE: giant extra 330l kit build

No problems with the cg. As you can see from the pics i put 2 LIFE batteries just behind the canopy. I made the bracket as heavy as i could. I also put a servo in the tail for the rudder. When inverted i only need a very little touch of down elevator. I like it a bit om the tailheavy side, but for tid plane it's ok:-)
Old 12-23-2014, 11:48 PM
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Hi, Nice planes & great carftsmanship guys. I have just started building my own. It is my 1st kit build plane and my 1st giant scale plane.
I have a DLE 120 for it and a bunch of Hitec servos.
I have read several build threads and I have the following questions:
1- Will I expect a tail heavy or nose heavy plane? Im planning on a pull-pull setup for the rudder.
2- Will I need a power expander such as smart-fly or Power box?
3- I have read a scray post of wing failure. Do I have to avoid certain manuevers?
4- I have some concerns regarding ending up with a wrapped wing or fuselage. What recommendations would you guys give me to build a straight wing and fuselage?
5- Does this plane have enough rudder authority for slow high alpha knife edge?
Old 12-24-2014, 04:26 AM
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Originally Posted by asaad_civic99
Hi, Nice planes & great carftsmanship guys. I have just started building my own. It is my 1st kit build plane and my 1st giant scale plane.
I have a DLE 120 for it and a bunch of Hitec servos.
I have read several build threads and I have the following questions:
1- Will I expect a tail heavy or nose heavy plane? Im planning on a pull-pull setup for the rudder.
2- Will I need a power expander such as smart-fly or Power box?
3- I have read a scray post of wing failure. Do I have to avoid certain manuevers?
4- I have some concerns regarding ending up with a wrapped wing or fuselage. What recommendations would you guys give me to build a straight wing and fuselage?
5- Does this plane have enough rudder authority for slow high alpha knife edge?
Following are my opinions having built:
1 - When i bought my kit the previous owner had already built the horizontal stabs, they were very heavy. I wish now i would have built new ones and reduced the weight. D
Due to the heavy stabs, i had to move all of my equipment, fuel tank, smoke tank and batteries as far forward as i could get them, at least there is no extra weight added for the CG.
2 - I do not use a power expander of any sort, there has been no issues without it. If one doesn't need it you can save some cash and there is one less thing to fail.
3 - Based on the suggestion of another moldeler who had built one of these kits i added heavy fiberglass cloth to the first three bays wrapping the wing tube sleeve.
There is a thin area and without the fiberglass could be a problem depending on flying style.
4 - Should be no issue at all. Take your time, follow the instructions, use a good flat building surface.
5 - Good question. I have not tried.
Here are some pictures of wing. I do want to mention one error that has been reported between the instruction book and the plans. I think Great Planes fixed this error on some of the later kits. The distance on the firewall to the centerline of the engine on mine was off by 1/8". The designer did not take into account the 1/8 plywood cover that sits on top of the motor box.
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Old 12-26-2014, 10:22 PM
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Thank you for answering my questions old scale guy. I have actually gone through your build thread and taken notes. Just from viewing your thread, anyone can tell how much experience you have in building kits. I am planning to use a carbon fiber wing tube as an additional precaution. I am also using polystyrene foam board on a flat table. It makes it much easier to insert pins.

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