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Dec 10, 2008, 08:44 AM
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niner555's Avatar
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Great Planes P-47


Looks like there's a new P-47 on the market!

I just spotted this on Great Plane's website. It looks very scale and can be set-up for either fixed gear or belly landing.

I think a little detailing like a radial engine, drawn-on panel lines and some cockpit detailing and it will be a really fine stand-off scale plane.

Been looking for a bubble-top P-47 to replace my very worn WattAge P-47 and I think this one will fit the bill!

Enjoy,
Matt

SPECS:

Stock Number: GPMA1479
Wingspan: 39.5 in (1005 mm)
Wing Area: 290 sq in (18.7 dm²)
Weight: 41-45 oz (1160-1275 g)
Wing Loading: 20.4-22.3 oz/ft² (62-68 g/dm²)
Length: 34 in (865 mm)
Requires: 4-channnel radio w/4-5 servos, 2-stroke .25 engine or 1200kV out-runner brushless motor, 45A brushless ESC & 11.1V, 3200mAh LiPo battery pack

Link to Great Planes info on P-47


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Last edited by niner555; Dec 10, 2008 at 09:14 AM.
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Dec 10, 2008, 08:54 AM
WAA-08 THANK FRANK!
JimNM's Avatar
Wow - that looks pretty good to me I'm enjoying the Hyperion .25 'Stang and the HK .25 Spitfire. What's one more?
Dec 10, 2008, 09:17 AM
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I am interested but I bet it cost big bucks though.
Dec 10, 2008, 09:24 AM
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niner555's Avatar
Quote:
Originally Posted by Coop
I am interested but I bet it cost big bucks though.

I see it's at Tower for $119.95 .... I don't think that's too bad at all for a fully built-up balsa ARF.

Looks like they are due in at the end of Dec.

http://www3.towerhobbies.com/cgi-bin...&I=LXVVG5&P=ML

Matt
Dec 10, 2008, 09:27 AM
WAA-08 THANK FRANK!
JimNM's Avatar
$119.00 for a .25 ARF is not a bad price point - and you know that there will be a few discounts to be had. The Hyperions run for $150-200 for the same size, although those do come with retracts....
Dec 10, 2008, 09:29 AM
Registered User
Yea that isnt too bad. They do not say which motor will power it though. Any guesses?
Dec 10, 2008, 09:31 AM
ARF Hater Club
tommyeflight89's Avatar
That weighs a TON. 45oz on a 40" span bird?
There are kits out there at this size that have less than half the weight with retracts and many more scale details.
Dec 10, 2008, 09:33 AM
Registered User
that price is not scary I would like to know what brand the propnut is?
Dec 10, 2008, 09:43 AM
WAA-08 THANK FRANK!
JimNM's Avatar
Coop - a quick and dirty guesstimation can be made by... multiply the displacement by 2 and add a zero to find the watts needed to fly. For example...

.25 x2 = 50 + 0 = 500 watts will approximate a .25 glow motor. Fine tune to your taste. 500 watts is "do-able" on 3s, but it would be better on 4s. I fly my .25 sized birds on 1000Kv to 1500 Kv motors with 11x7 to 10x5 props for a cost of around 40-45 amps static on 3s batteries.

p.s. I do not like to fly slow
Dec 10, 2008, 09:51 AM
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niner555's Avatar
Quote:
Originally Posted by tommyeflight89
That weighs a TON. 45oz on a 40" span bird?
There are kits out there at this size that have less than half the weight with retracts and many more scale details.
Yea, that seems a bit heavy..... I am guessing they quoted the weight with a nitro based motor package and landing gear. In my experience, something that size, electrified, set-up for belly landing, with the battery they are listing should be around 38-39 oz. in my estimation. Should be a real fast plane with that wing loading

Matt
Dec 10, 2008, 10:36 AM
Gravity's a harsh Mistress....
southernmd_man's Avatar
Mmmm, if it were a Razorback, I'd be all over it....just don't like the lines of the bubble top.
Dec 10, 2008, 11:51 AM
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Quote:
Originally Posted by tommyeflight89
That weighs a TON. 45oz on a 40" span bird?
There are kits out there at this size that have less than half the weight with retracts and many more scale details.
I hope that the first person that gets this model goes through the trouble to weigh all the parts on a digital scale and tally up the empty weight of the model and this will give a good indication of the final "ELECTRIC POWER" version fully flight ready weight.

I have done this with my new World Models P-51D Mustang "EP" of 49 inch wing span (With Retracts!!!) and does not surpass 2.8lbs. (44.8oz.) Fully Flight Ready!!!
Dec 10, 2008, 02:21 PM
Registered User
Quote:
Originally Posted by JimNM
$119.00 for a .25 ARF is not a bad price point - and you know that there will be a few discounts to be had. The Hyperions run for $150-200 for the same size, although those do come with retracts....
and the Hyperion's fuselage are composite not built-up.
Dec 10, 2008, 04:34 PM
Account closed

Comparison Only!


You guys do realize that this Great Planes P-47 has very similar qualities (jig manufactoring) as that of the Great Planes P-40 Warhawk that professes dual GLOW and ELECTRIC power systems.

http://www.greatplanes.com/airplanes/gpma1472.html


again, here is the P-47 product information for comparison:

http://www.greatplanes.com/airplanes/gpma1479.html


Differences in Power System Recommendation is that for the P-40 Warhawk, it is recommended to use the RIMFIRE 35-30-1450 motor (1450Kv) and Great Planes recommends for the P-47 the RIMFIRE 35-30-1200 (1200Kv).

As far as the weight issue, I can see why the heavy Ton Tossy estimate as they ask for the Great Planes "Electrifly" 3-Cell, 3200mAH, Li-POLY that tips the scale of an estimated 9+oz.


If I ever consider this model whenever it finally arrives at our local hobby shop, I would not bother to mess with any RIMFIRE delivering such High Kv such that you need large Li-POLY Cells and I would personally install the E-Flite 480 (1020Kv) that measures almost exactly the same motor dimensions of that of the recommended RIMFIRE:

E-Flite 480 (1020Kv):
http://www.e-fliterc.com/Products/Te...rodID=EFLM1505
Overall Diameter: 35mm (1.40 in)
Shaft Diameter: 4mm (.16 in)
Overall Length: 33mm (1.30 in)

Using the APC "Slow Flyer" 10 X 7 propeller with the lighter 3-Cell, 2200mAH, 20C, Li-POLYs would allow for very Low Wing Loading and make these two models fly very well without any Ugly Tip Stall events.

My 0.05 Cents Worth.
Dec 10, 2008, 09:41 PM
Hooper, full throttle!
Tommy D's Avatar
Quote:
Originally Posted by guapoman2000
You guys do realize that this Great Planes P-47 has very similar qualities (jig manufactoring) as that of the Great Planes P-40 Warhawk that professes dual GLOW and ELECTRIC power systems.
Yep and their both butt ugly too!


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