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Great Planes Spitfire 39" ARF

Old 07-24-2007, 04:29 AM
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fastie
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Talking Great Planes Spitfire 39" ARF

Anyone have any comments about the new Spitfire from Great Planes?

http://www.towerhobbies.com/products.../gpma1478.html

I had some credit and decided to get one. Need motor recommendations, etc.

I know it's fairly new, so I'll post pics if you would like when I get it. Can't wait.
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Old 07-24-2007, 12:24 PM
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wow, that is going to take a serious motor to fly that plane, with as heavy as it is and as small of a wing span as it has this plane is going to have a high stall speed. IMO
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Old 07-24-2007, 11:19 PM
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fastie
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Default Did I buy a lemon? GOOD POINT

Should I send it back before even opening th box? I will check the weights and do some calculations myself. here though are some specs of a similar, but foam GWS plane.

The GWS Spitfire (foam) is:

Wingspan: 34.5 " ( 876mm)
Wing Area: 213.9 sq in ( 13.8sq dm)
Weight: 14-15 oz (390g)
Wing Loading: 9.5 oz/sq ft (28.3 g/sq dm)
Length: 28.4" ( 720mm)

The Great Planes Spitfire (balsa) is:

Wingspan: 39" (990mm)
Wing Area: 272sq in (17.5sq dm)
Flying Weight: 40 - 48oz (1130 - 1360g)
Wing Loading: 21 - 25 oz/sq ft (65 - 78 g/sq dm)
Length: 35.5" (895mm)


I also looked at the Top Flite 60 size Spitfire - and their wingloading is:

Wingspan: 63 in (1600 mm)
Wing Area: 687 sq in (44 dm2)
Weight: 7.5-8.5 lb (3400-3855 g)
Wing Loading: 25-28.5 oz/sq ft (76-87 g/dm2)
Fuselage Length: 53 in (1345 mm)
Required: 2-stroke .61-.75 (10-12.3 cc) or 4-stroke .70-.91 (11.5-14.9 cc) engine; 4-6 channel radio w/5-7 servos

Seems like Great Planes may have produced another poor performing model. The Yardstik was way under-powered and I had to send that back as well. Good grief!!!

The videos looks great though! I guess I'll be flying really fast!!!
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Old 07-25-2007, 12:26 AM
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Biplane Murphy
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Keep in mind........it is not foam, and is a warbird.

The Spitfire is one of the better flying warbirds, but they do still need a bit of speed.

Lots of luck.........Murph
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Old 07-25-2007, 12:30 AM
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Holy mackerel ...48 ounces for a 39" span. I never noticed that before. What is it made of ...

I hate to rain on anyone's parade, but that just seems like a poor design (scratching my head).

Edit: Ah, it's built for a glow engine too. So I guess they used some oak!
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Old 07-25-2007, 12:32 AM
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Default yes - I understand, but ?

Thanks - I do understand, but I was looking at some other planes in the e-performance series -- also balsa that are much lighter. Like the extra 330S ...

http://www.towerhobbies.com/products.../gpma1543.html

Just don't think I want such a heavyweight. I will open box and look - but think this one is returning to sender
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Old 07-25-2007, 12:35 AM
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Also keep in mind this plane was designed for COMBAT!!!
That means High speed ribbon cutting fun.(often involving contact with other planes/ground etc...)
The plane should be fairly sturdy to survive the abuse of the combat arena.

This isn't a regular parkflyer. And WILL NOT FLY LIKE ONE.

Murph.......
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Old 07-25-2007, 12:36 AM
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Originally Posted by fastie View Post
Thanks - I do understand, but I was looking at some other planes in the e-performance series -- also balsa that are much lighter. Like the extra 330S ...

http://www.towerhobbies.com/products.../gpma1543.html

Just don't think I want such a heavyweight. I will open box and look - but think this one is returning to sender
Sorry, I hate to offer negative comments when someone is excited about a new plane. I took a third look. This is a "combat" Spitfire, so not necessarily as bad a design as I originally may have thought. It will fly well with enough power. I guess now you just have to decide what you want to get out of flying it. It's no park flyer for sure.

Let us know what you think when you open it.
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Old 07-25-2007, 12:46 AM
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Hey fastie..........do you have a 6+ channel transmitter?

If so you could set it up with flaperons to slow her down for landing!!!!

Flaps really help with my .60 size Spitfire!!!
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Old 07-25-2007, 04:04 AM
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Default Umm, I have this plane and it is AWESOME

This is my FAVORITE plane right now. Sorry but it is glow powered but it flies great, is very manueverable, comes in for a landing no problem and is just a quick, kick-in-the-pants to fly and have fun with.

I have dead-stick landed this baby a few times (out of fuel) and it is no problem.

This thing is fast and agile. Another guy at my club just got one because I fly this so much and have a ball with it.

It looks great, flies great, and was an easy build. Great Planes did a great job with this ARF and I had no problems with it at all.

The only mod I did was to add a steerable tail-wheel.
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Old 07-25-2007, 04:09 AM
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Welcome to wattflyer birdiman.....
I see this is your first post.(good one).......

I have thought about this one for one of my combat planes!!

Another club member has one.......not put together yet.
I was waiting to see his fly.
The Spitfire is one of my Favorite Full Scale Planes. (even named one of my dogs "Spitfire")

Murph............
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Old 07-25-2007, 04:50 AM
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Default Excellent comments

Thanks fr the excellent comments - I really was looking for an electric warbird to step-up from the MM Magpie that I have. This just seem a little too ambitious. But, I guess I could hold it and wait til I'm ready.

Be interested if anyone has set this up for electric. Not in a club right now (not sure who does combat in my area - central maryland) so I would need help with gas and all that....

Learning tons from this forum though and will be VERY careful before I purchase a plane in the future and take the time to better understand the characteristics before I buy. I think many amateurs (maybe I'm still a beginner) make this mistake.

I did send an e-mail to Great Planes to try to confirm the weight - but no reply. Suspect all of your conclusions on it being a combat plane and really a glow plane make sense.

Oh well I think the extra 330S would have been a better choice.
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Old 07-25-2007, 04:53 AM
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yes I do have a 6 channel - seems though others are OK with it as it is. I think glow power will be the choice though for set-up.

Curious now what the weight of a gas motor/fuel/tank/etc. set-up would compare to an electric setup ?? Maybe a good thing to explore for the forum and have some fun setting this up for electric and give it a try.

Maybe someone will reply who already has this set-up for electric?
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Old 07-25-2007, 04:55 AM
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P.S. What is the "Rep Power" for?
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Old 07-25-2007, 04:57 AM
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Birdiman - any pics during build?
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Old 07-25-2007, 04:58 AM
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Some guys fly combat with electrics too.
I fly my glow combat planes for fun too.(very fast and nimble)

It will probably be a great flying plane........Just don't underpower it.

It is designed for glow or electric, so should include a mounting arrangement for electric motor.

Lots of luck........Murph........
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Old 07-25-2007, 05:03 AM
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Originally Posted by fastie View Post
P.S. What is the "Rep Power" for?
http://www.wattflyer.com/forums/showthread.php?t=15231

See there for explaination.


Murph.....
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Old 07-25-2007, 05:09 AM
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Thanks - guess I'll get a -1 for posting the dumb questions Hopefully I'll redem myself in the coming months with nice pics and info on the models I have.
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Old 07-25-2007, 05:17 AM
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Biplane Murphy
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Check in your "user cp" to see status of rep etc... pos. or neg.....
It's at the bottom of the page.

Murph........

P.S. I'll shoot you some pos. tomorrow......out of ammo today.
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Old 07-25-2007, 06:04 AM
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Default Sorry no pics.

This is my 12th plane and it was an easy build. Adding the tailwheel was a piece of cake and I like it better than dragging it for sure.

It does include everything you need to set up for electric or glow. I haven't weighed the plane but my guess is that the specs are pretty close.

I will try to take a pic tomorrow and post. I have been flying her for three weeks now and can't wait to get back out.
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Old 07-25-2007, 06:11 AM
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fastie
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Default May re-consider

Originally Posted by birdiman View Post
This is my 12th plane and it was an easy build. Adding the tailwheel was a piece of cake and I like it better than dragging it for sure.

It does include everything you need to set up for electric or glow. I haven't weighed the plane but my guess is that the specs are pretty close.

I will try to take a pic tomorrow and post. I have been flying her for three weeks now and can't wait to get back out.
Looking forward to the pics.
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Old 07-25-2007, 02:29 PM
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Default Here are a few pics

I weighed her this morning. 2lbs 9oz (41 oz). The power is from an OS .25 FX. HS 81 servos, Hitec Electron 6 receiver...

Had to cut a little door in the rear portion of the fuse for the RX battery. It was very nose heavy and this got the CG where it should be. You will probably have better luck with the CG with an electric setup.
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Last edited by birdiman; 07-26-2007 at 02:24 AM.
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Old 07-25-2007, 04:51 PM
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I have the GP Corsair, they also make a P-51 Mustang (which I bought my buddy for Christmas so the Corsair would have some company)

E-Flite Power 25 and 3S. Not a tremendously difficult plane to fly, the Spit should be a bit harder. Definitely not a 2nd plane, big difference from a foamy park flier. Won't float in like a feather - but the difference in the air is worth it.

Wish GP would come out with something from the other side - a Zero, Me-109..
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Old 07-26-2007, 01:57 AM
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Default nice pics

Originally Posted by birdiman View Post
I weighed her this morning. 2lbs 9oz (39 oz). The power is from an OS .25 FX. HS 81 servos, Hitec Electron 6 receiver...

Had to cut a little door in the rear portion of the fuse for the RX battery. It was very nose heavy and this got the CG where it should be. You will probably have better luck with the CG with an electric setup.
thanks Birdiman - nice pics - looks awesome. I got box today and will open shortly!
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Old 07-26-2007, 02:00 AM
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Originally Posted by Old Fart View Post
I have the GP Corsair, they also make a P-51 Mustang (which I bought my buddy for Christmas so the Corsair would have some company)

E-Flite Power 25 and 3S. Not a tremendously difficult plane to fly, the Spit should be a bit harder. Definitely not a 2nd plane, big difference from a foamy park flier. Won't float in like a feather - but the difference in the air is worth it.

Wish GP would come out with something from the other side - a Zero, Me-109..
Yeah - that would be great. After I learn to fly her I maybe looking into combat. I'll take my time and do some sim practice as well before trying her. I think now is also a good time for me to finally find a club field and club to join. thanks for all the advice
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