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Old Nov 07, 2012, 12:09 PM
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jseese's Avatar
United States, WI, Delavan
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Giant Scale TF P-40 Electric

Hey all,

I am finishing up my 60 size P-47 and moving to a GS TF P-40 and converting to electric. Anyone have any recommendations on a power setup. I really want to use a scale 3 bladed prop as well. I used a Hacker in my P-47.

Lastly anyone have any servo recommendations. I used the recommended Futaba servos for the P-47 but and wondering if I should use the TF recommendations or ? I use a Spektrun DX8 radio/reciever.
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Old Nov 07, 2012, 12:28 PM
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Doug Bartley's Avatar
Canada, ON, Owen Sound
Joined Oct 2008
2,876 Posts
Is the new P40 a 60 size as well? I'm not familiar with the plane. Whats the biggest diameter prop you could turn for clearance? Whats the estimated AUW. What servos are recommended?
Imo, any 60 size can use 6s, and motors can be found to turn 16" 3 blade props without a lot of difficulty. You need approx 125w/lb to fly well.
Give us a little more info. Doug B
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Old Nov 07, 2012, 12:32 PM
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United States, WI, Delavan
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It is the giant version. I was looking at 2 6S packs for a toatl of 12s. Here are the specs from the TL site:

PRODUCT RECOMMENDATIONS:
Please note: all recommendations were the best choices available at the time of product release. Please check with your dealer for additional choices.
DLEG0055 DLE Engines DLE-55cc Gasoline Engine
or
FJIG0144 Fuji-Imvac™ BT-43EI-2 43cc Gasoline Engine
FUTL7639 Futaba® R6008HS 8-Channel 2.4GHz FASST™ Receiver
FUTM0102 Futaba S9402 High-Speed BB Servo (6)
FUTM0075 Futaba S9001 Coreless BB Servo (3)
FUTM4385 Futaba Heavy-Duty Switch Harness (2)
FUTM1285 Futaba 1500mAh NiCd Receiver Battery (or equivalent)
HCAM2721 Hobbico® 24" (610 mm) Pro Series HD Servo Extension (2)
HCAM2711 Hobbico 12" (305 mm) Pro Series HD Servo Extension (5)
GPMM1100 Great Planes® Large Scale 1" Single Side Servo Arm (2)
GPMM1110 Great Planes Large Scale 2" Single Side Servo Arm
JTCG1035 J'TEC Radiowave Muffler



--------------------------------------------------------------------------------

SPECIFICATIONS:
TOPA0705
Wingspan: 86 in (2185 mm)
Wing Area: 1262 in² (81.4 dm²)
Weight: 23-24 lb (10.4-10.8 kg)
Wing Loading: 42-44 oz/ft² (128-134 g/dm²)
Length: 72 in (1830 mm)
Requires: minimum 5-channel radio with fixed landing gear (9-channel or greater recommended) with 9 servos, 43-55 cc gasoline engine.
Please consult your dealer or the instruction manual for recommended products.
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Old Nov 07, 2012, 12:56 PM
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Canada, ON, Owen Sound
Joined Oct 2008
2,876 Posts
Wow, no 60 size here!! I've only built one 12s plane, an Areoworks 50cc 300 Extra. Iused a Suppo 7035-9 (190kv) tied to a CC110HV esc. It spins a 23/10 prop with no effort, showing 4200 watts at 99a. Motor comes down barely warm at that rating, maximum is rated 6000w. It weighs 3 lbs, uses Da 50 mount patterns.
I'm positive it could spin a 21/22" 3 blader without issue but have no tests.
FWIW, I used HD Power 9150 servos (rated 226ozs) in this plane, digital metal gear, have stood up very well at $33ea. I got them from SDS Hobbies.
Beyond this, afraid I'm not much help. Doug B
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Old Nov 07, 2012, 08:24 PM
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United States, WI, Delavan
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Thanks Doug for the replies!! Anyone else has any insight on a power setup for this plane?
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Old Nov 08, 2012, 10:12 AM
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Brentwood, California
Joined Jul 2007
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I'm running the Hacker A-60-16 L on 12s 5000 mah in my hanger 9 gs P-47. With a 20x15 prop. It has loads of power it's 23 pounds.

With a three blade you would be better off with a lower KV.... I have the A-60-18L in my gs extra 260 on 12s...it swings a 24x12 prop with no issue.
So that would be a good pick for a three blade prop, but your going to have to play with props until you find one that works well.


You may even want a bigger motor for a three blade prop, and not sure if you need nose weight? is so the Rimfire 65cc may be a good choice to get weight up front and turn a 3 blade easy... again your going to have to play with props until you get the power you want
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Old Nov 08, 2012, 10:08 PM
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Thanks Ron, do you have any suggestions on a 3 bladed prop manufacturer?
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Old Nov 09, 2012, 10:24 AM
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Brentwood, California
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Mejzlik props are the best.... but costly

http://www.desertaircraft.com/page.php?Page=Mejzlik
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Old Nov 09, 2012, 12:13 PM
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YIKES!!! Those are super nice but indeed super pricey, any middle ground options or any scale warbird props?
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Old Nov 09, 2012, 08:41 PM
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Brentwood, California
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these are really nice and should cost less....


http://www.xoarintl.com/props/model-airplane/PJI-E.html
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Old Nov 12, 2012, 03:57 PM
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Nice, thanks Ron!!
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Old Nov 13, 2012, 11:51 AM
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DanLandis's Avatar
Joined Dec 2011
69 Posts
I am using a RimFire 65cc on a Castle Ice 160 V2 with 12s 1p 5300mah packs in my TF GS FW-190. Its a great combo, I want to try a 25x12 -3 blade.
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Old Nov 16, 2012, 02:37 PM
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United States, IN, Indianapolis
Joined Dec 2006
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I'm enjoying the Hacker Q80-8M on 12S in my 87" Sbach 300! Setup information and video below.

http://www.rcgroups.com/forums/showp...2&postcount=64
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Old Nov 17, 2012, 01:26 AM
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Harry H's Avatar
Los Angeles
Joined Oct 2010
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Quote:
Originally Posted by DanLandis View Post
I am using a RimFire 65cc on a Castle Ice 160 V2 with 12s 1p 5300mah packs in my TF GS FW-190. Its a great combo, I want to try a 25x12 -3 blade.
What prop are you using now?

Harry
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