Hi guys, I was just wondering if anyone out there has ever purchased a Extra 300 72" ARF from Giant Scale Planes. The price is not bad 200.00 but is the quality good. If anyone could give some advice on this manufacture I sure would appreciate it. Thanks and keep them flying.

I have their older (Yellow and gray) 300 and it's been a great flyer. I also have their larger Giles 202- arc... and am pleased with the quality of that one also. Be careful of some of the joints... don't assume and give a little pull or tug on some critical areas just to be sure. But that's wise with any arf/arc that you purchase... For the money- and if you don't have the time to built it yourself- it's a great value.

Well there are alot of guys on here who will tell you to stay away from them, and some who will tell you there new arfs are not bad. I have the extra 300 you are talking about. I got it for 170.00 here on RCU not put together. I have taken everything out and inspected it and looks like any other arf you would purchase. My covering was great no wrinkles at all, it seems to be a sticky type covering but have been told a low temp iron will get any wrinkles out of it. The wing area is a bit more than advertised in the manual. They do not include the fuselage just the wing halves there is a post on rcu about it you can do a search just type in GSP and you can get alot of info. Im going to power mine with a O.S. 1.60 fx. I am overall impressed with the arf just have to see what the weight comes out at. I have had a couple of the guys that fly gaint scale at the club look at it and say it looks fine and should fly great. take care mike lansford

I have seen the 72" Extra fly with an MVVS 160. The plane flies very nice. Its a little heavy for a 72", if it weighed in at 11 lbs it would be great stuff. The covering is good (not seen my friend's peel yet) and so is the built quality. It comes in fairly easy on dead stick also. From what I can see the plane has no bad habits and also not seen any construction weaknesses. Go get it!!! She is a beauty. The only pain is that you need to remove the cockpit each time you want to plug in the wings.

Thanks fellows I think I will give it a try and put it on my Xmas list. Does anyone know if there is a mod that has been done in order to fix having to remove the cowl each time the wing is put on. keep them flying.

Sorry guys I meant cockpit.

Check out the great mod SJN did on his GSP Yak 54 72". http://www.rcuniverse.com/forum/m_21...mpage_3/tm.htm Keep in mind you won't be able to do exactly the same on the GSP Extra 72", as the "cockpit" is just a vacuum-formed thin plastic sheet. The Yak's cockpit is a fairly stout fiberglass piece.

BTW, the covering is genuine iron-on covering - not sticky-back shelf paper type. Even though GSP says it's low-temp, I've gone over it with an iron at typical Monocote/Ultracote temp settings and it seems to hold up just fine. I have seen other "low-temp" covering (Econocote, etc.) literally melt when you hit it with a iron at high-temp.

has anyone figured out a mod for the canopy on the extra 300 from gsp with the 72in wingspan. I really do not want to use the screws to hold the plastic insert and windsheild in. This is the only down side i have found with the plane. I thought about doing the mod that SJN did but it will not work as stated before in a thread the cockpit insert is a light plastic if anyone has something in the works let me know. thanks mike lansford

Mike, I am almost done with my GSP Extra 300 72". I have pretty much decided just to live with having to remove the canopy every time I want to install or remove the wings. I will switch to small plastic bolts (probably 8-32) and install blind nuts on the fuselage. THis is what the author of the review article in FlyRC a few months back said he did.

I also thought about installed thin plate hinges down one side of the canopy, so I only have to remove bolts on the opposite side. Kinda like how some full size airplanes do. In any case, I think I will do away with the silly vacuum-formed "cockpit" and just install the canopy by itself.

I agree this model is designed and built very well except for the canopy attachment.

volfy,

thanks for the input i have decided to do about the same thing. Im going to use blind nuts inside the fuse and either a 8-32 or 4-40 with a plastic washer and do away with the vacuum-formed cockpit. Im going to put a O.S. 1.60 with a pitts muffler for power and I bought a carl goldberg tailwheel assembly for a 12lb plane. Im going to put 4-40 control rods all the way around and replaced the stock tank with a 24oz dubro. did you use ca hinges for the control surfaces. I talked to a couple of guys at the club and they said ca hinges should be fine just get heavy duty hinges plus im going to seal all the control surfaces with monokote. I really liked the looks of the plane and can't wait to get it in the air. take care mike lansford

The Carl Goldberg tailwheel assembly is excellent, but you do need to watch where the CG will end up. My CG is looking pretty good so far, and that's with the stock tailwheel bracket. I did modified it slightly to make it 100% removable. I posted pics in another thread about the GSP Yak 54 72".

I used CA hinges. I firmly believe CA hinges work just fine when installed properly - up to 50cc gassers. Beyond that it gets iffey. Others' opinions may vary, of course. 1.20-1.60 class for sure is no problem. Just be sure to leave a healthy amount of hinge gap to maximize the bend radius of the exposed part of the installed CA hinges, then seal the hinge line later.

I installed a rectangular Sullivan 21 Oz tank, and still had room around it. 24 Oz. should be an easy fit too. This is the easiest ARF to install an oversize tank in the stock location I have ever seen.