RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF  
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RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 2/2/2008 12:45:11 PM   
tiger650


 

Posts: 20
Joined: 10/30/2004
From: Elma, NY, USA
Status: offline
quote:

ORIGINAL: 150flyer

I installed a Mac Muffler and began leaning the engine today. The plane was already fast but the speed increase from the new muffler was significant. I lost a few minutes per flight however, with a new average of about 8 minutes to dead stick. This is flying at full throttle.

When I first purchased this small plane, I figured it would be good for fairly calm days. Today the winds were about 15 mph but there were no problems. Some of my larger planes require more effort to handle in the wind.


The MACS muffler looks great. Does it function the same as a tuned pipe? Is it any louder than stock? Also, I really like the wheels that you have installed. Are they stock?

Thanks,

Bob

(in reply to 150flyer)
       Post #: 26

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 2/2/2008 11:28:17 PM   
vertical grimmace


 

Posts: 1145
Joined: 3/13/2004
From: ft collins , CO, USA
Status: offline 		The Macs mufflers are just that....mufflers. Not tuned. Back when I was flying scale combat I was attracted to them because they were lighter or at least moved some weight back from the nose. They do look better but will not give any noticeable increase in power on a .25FX with baffle removed. I did find about a 500 rpm bonus when added to an OS .25 FP.
One of the main benefits is they are one piece. You never have to worry about losing the back half in flight.

(in reply to tiger650)
       Post #: 27

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 2/2/2008 11:30:18 PM   
tiger650


 

Posts: 20
Joined: 10/30/2004
From: Elma, NY, USA
Status: offline 		Thanks for the input. I have decided to go with a stock OS 25SX.

(in reply to vertical grimmace)
       Post #: 28

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 2/10/2008 5:32:48 AM   
KLF1292


 

Posts: 14
Joined: 12/16/2006
From: Leander, TX, USA
Status: offline 		Maidened the P-40 today. She flys well with the O.S. 30 4-Stroke and a 9X6 APC prop. Take-off was smooth and almost scale. She needed only a click or two of up elevator. The recommended throws were perfect and very responsive. I wouldn't say it was overly fast but it still whistles by at a good clip. Landing looked even better than the take-off - main touch, roll-out, and tail came down on the Dubro micro steerable tailwheel I installed. I may change the prop from APC to 10X5 MasterAirscrew. And the O.S. 30 FS? It's so very quiet with a nice little growl and plenty of power for sport flying. I love this plane.

< Message edited by KLF1292 -- 2/22/2008 8:43:29 PM >

(in reply to tiger650)
       Post #: 29

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 3/5/2008 1:25:18 AM   
tiger650


 

Posts: 20
Joined: 10/30/2004
From: Elma, NY, USA
Status: offline 		Does anyone have any tips on hand launching the P-40? I built it without the gear because I fly on an average condition grass field.
Thanks

(in reply to KLF1292)
       Post #: 30

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 3/5/2008 9:47:42 AM   
borisp


 

Posts: 65
Joined: 5/31/2005
From: Zagreb, CROATIA (HRVATSKA)
Status: offline 		It should be very similar as with Corsair: about 1/2 but not more than 70% on throttle, one or two clicks of up trim, and a firm horizontal toss away. This is considering you are equipped with .25 sized engine and 9x6 prop or close.

_____________________________

Boris

(in reply to tiger650)
       Post #: 31

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 3/9/2008 2:13:13 AM   
westdr6113


 

Posts: 80
Joined: 8/26/2007
From: kailua, HI, USA
Status: offline 		I just maidened my new one today (destroyed the last one). I had launch at 100% throttle with no trim adjustments and havnt had any problems. I'm using a os 25fx. The motor mount is stock and at factory set angle for right thrust. A nice underhand launch seems to work fine.

Attachments
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(in reply to borisp)
       Post #: 32

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 3/9/2008 4:45:22 PM   
cosmo64


 

Posts: 25
Joined: 1/20/2008
From: Murrieta, CA, USA
Status: offline 		SWEET!!! What paint did you use? Great detail and what a nice looking ship!!! They sure fly great don't they???

(in reply to westdr6113)
       Post #: 33

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 3/10/2008 1:41:06 PM   
westdr6113


 

Posts: 80
Joined: 8/26/2007
From: kailua, HI, USA
Status: offline 		I just used spray paint for the base colors. I used krylon white primer overall then light gray primer for under surface and krylon satin Italian olive for upper surfaces- kinda gives a nice semi faded olive drab look and it dries really smooth. I used a pilot extra fine precise v5 ball pen for panel lines. i used a ruler with a thin peace of cork glued to one side (slightly narrower than ruler) so the ruler sits just off the surface to prevent bleeding. You have to let the panel lines dry for about 20 mins before handling or they'll smear. the nose art and weathering is tamiya acrylics. and then the whole thing is sprayed with a light coat of top flite lusterkote flat clear. Some people have asked me how durable the paint job is. well I've never had a balsa combat plane last more than two months and just before that plane was destroyed the paint was starting to fade away behind the muffler and leading edge of the exhaust side wing. I've also found that if you cover the plane with pearl monokote when the paint does fade it almost looks like bare metal wearing thru so its kinda natural looking. Two months is the longest I had a balsa combat plane about 47 seconds is the shortest- never had to repaint any of them

(in reply to cosmo64)
       Post #: 34

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 3/16/2008 7:41:54 PM   
KWJ48



Posts: 240
Joined: 12/18/2005
From: Midlothian, VA, USA
Status: offline 		Has anyone weighed theirs yet? With a 3s 4100 lipo I'm at 2 .lbs 10 oz. With a 3s 2200 I'm at 2.lbs 4 oz. It seems kinda heavy?

(in reply to westdr6113)
       Post #: 35

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 3/17/2008 10:35:28 PM   
tiger650


 

Posts: 20
Joined: 10/30/2004
From: Elma, NY, USA
Status: offline
quote:

ORIGINAL: westdr6113

I just maidened my new one today (destroyed the last one). I had launch at 100% throttle with no trim adjustments and havnt had any problems. I'm using a os 25fx. The motor mount is stock and at factory set angle for right thrust. A nice underhand launch seems to work fine.


The paint job is awesome. Well worth the time I'm sure. I think I will try the underhand launch for my maiden flight as well. Did it need much trimming out when you got it in the air?

Thanks!

(in reply to westdr6113)
       Post #: 36

RE: .25 sized Great Planes P-40 Warhawk GP/EP ARF - 3/18/2008 8:03:29 AM   
westdr6113


 

Posts: 80
Joined: 8/26/2007
From: kailua, HI, USA
Status: offline 		Thanks, mine didn't need much trim a couple clicks left aileron was all it needed

(in reply to tiger650)
       Post #: 37

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