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Nov 06, 2009, 11:51 AM
Registered User
Joe 1320's Avatar
Quote:
Originally Posted by modfly
Well, IDK Joe, I think its quite fast and aerobatic and the Undercamber wing actually helps IMO to increase the speed envelope. I think someone here tried what your saying and it did not work out well. All I did was remove the dihedral and add 2 flat CF rods to reinforce the wing. I have several Mustangs and this one will fly with the best of them undercambered wing and all.
That's how I built mine, no dihedral and carbon spar. I don't know about the increasing the speed envelope, usually undercamber is meant for to increase lift for slower flight. no doubt that this mustang works. Mine is a hoot with a blue wonder on 4s and a 6" prop. Probably a little too much but what else is new.
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Nov 06, 2009, 11:53 AM
Doing it in the Lateral Axis
modfly's Avatar
Quote:
Originally Posted by Vicarious
These are very close in size to the Eflite P-40 but a much cheaper airframe. Of course they aren't as close to RTF as the Eflite, but Almost... ARF>

Hey Modfly:

Caliber Hobbies has these on sale again. $19.34. They sent me an email, and it links to your thread on RCGroups.

From the email:
LINK TO RC GROUPS MUSTANG P-51 CONVERSION FOR 3 CHANNEL and 4 CHANNEL
Hey thats cool This really is a nice plane and is very airworthy low wing warbird. The mods to bring it up to where I have it are intense but in the end its worth it as its a Super Micro warbird. I believe the BL Feigao motor and IPS gearbox is the kicker and makes this thing very powerful and light weight.
Last edited by modfly; Nov 06, 2009 at 12:06 PM.
Nov 06, 2009, 12:05 PM
Doing it in the Lateral Axis
modfly's Avatar
Quote:
Originally Posted by Joe 1320
That's how I built mine, no dihedral and carbon spar. I don't know about the increasing the speed envelope, usually undercamber is meant for to increase lift for slower flight. no doubt that this mustang works. Mine is a hoot with a blue wonder on 4s and a 6" prop. Probably a little too much but what else is new.
Ok, what I'm trying to say is that the undercambered wing allows a wider speed envelope. It will fly very slow as well as very fast with the wing design of this plane.

With the motor and GB I'm using, I can use a light weight 350mah 2cell and rip up the sky. The Fiegao motor I'm using is a high KV and with the gear ratio it makes quite a bit of static thrust so the plane is very powerful and fast even with the inexpesive 2 cell lipo. http://www.hobbyking.com/hobbyking/s...idProduct=9028

Gws Mini Mustang (1 min 45 sec)
Last edited by modfly; Nov 06, 2009 at 12:14 PM.
Nov 06, 2009, 12:15 PM
Huh?! well waddayouknow!?
Under camber is helpful in enlarging the envelope,not increasing it.
Nov 06, 2009, 12:17 PM
Huh?! well waddayouknow!?
built one of these a while back. seemed kind of pitchy with the modded wing.
if I had to do it again i d go light or semi stock like you and light of course.
congrats on a good flyer. Its like a love affair when one acts like its supposed to.
Nov 06, 2009, 12:45 PM
Doing it in the Lateral Axis
modfly's Avatar
Here is the build thread for the GWS micro Mustang https://www.rcgroups.com/forums/show....php?t=1052044

If I do another one, It will be with the AR6400 and a 2 cell with the same power train as this one.
Nov 06, 2009, 01:12 PM
Registered User
Joe 1320's Avatar
Gotcha! I see what you're trying to say. You were alluding to adding lift at slower speeds.
Last edited by Joe 1320; Nov 06, 2009 at 02:40 PM.
Dec 31, 2009, 08:22 PM
Live to fly... Fly to live
mudman1959's Avatar

New winter project...


I just placed a order for one of these little P-51's, Looks like fun! This should prove to be a good challenge to modify. I have been looking for a model that has some performance but yet can fly in a gym or hanger. Not a bad deal for twenty dollars and shipping costs. I have a blue wonder motor that I can use but I will have to get some micro servos and a ESC. As for the radio system I have very small Spektrum receiver for it. I will post some pics as I do the mods.. Mudman1959 Fly or Die...


https://www.rcgroups.com/forums/show....php?t=1086711



P=51.avi (0 min 32 sec)
Last edited by mudman1959; May 26, 2010 at 09:49 AM.
Jan 01, 2010, 10:24 AM
Doing it in the Lateral Axis
modfly's Avatar
Quote:
Originally Posted by Danjuan
Under camber is helpful in enlarging the envelope,not increasing it.
whatever, your response sounds like double talk to me I think your trying to over complicate the issue with the wing design. I think I stated it better and more accurately when I said that and I quote " the undercambered wing allows a wider speed envelope".

My recommendations, and thats from a guy that has several videos of this plane flying, is to keep it light weight as possible and review my build thread on this plane and do the wing reinforcement mod that I outline in that thread.

My P-51 build thread.. https://www.rcgroups.com/forums/show....php?t=1052044
Last edited by modfly; Apr 09, 2010 at 09:13 PM.
Sep 21, 2011, 10:44 AM
Houng-wen Lin
GWS4CEO's Avatar
This little P-51 with GWS IPS will be great improve of the thrust, yet with BL 12X30mm motor will even better.

Shall we go this size to be EPO solid wing and fuselage a new size? Or even smaller?

Shipping is getting too expensive this days.
Last edited by GWS4CEO; Sep 21, 2011 at 10:50 AM.
Sep 21, 2011, 11:07 AM
Registered User
Joe 1320's Avatar
Quote:
Originally Posted by GWS4CEO
This little P-51 with GWS IPS will be great improve of the thrust, yet with BL 12X30mm motor will even better.

Shall we go this size to be EPO solid wing and fuselage a new size? Or even smaller?

Shipping is getting too expensive this days.
Smaller seems to be a hot seller right now. 24-25" wingspan is really a nice size. Not too small like a micro, yet easier to transport than a 31" wingspan. It also lends itself to reasonably sized lipos and power systems. That being said, EPO is the hot seller, I would make this in EPO with a more solid wing.
Sep 24, 2011, 11:02 AM
Doing it in the Lateral Axis
modfly's Avatar
Quote:
Originally Posted by GWS4CEO
This little P-51 with GWS IPS will be great improve of the thrust, yet with BL 12X30mm motor will even better.

Shall we go this size to be EPO solid wing and fuselage a new size? Or even smaller?

Shipping is getting too expensive this days.
A smaller scale line of the WW2 warbirds would be very nice. I like EPP foam myself. EPO seems too heavy for small planes However, EPO wing sounds good.
Sep 26, 2011, 01:17 PM
Thatsright I drankthe rum
K9000wner's Avatar
Quote:
Originally Posted by modfly
A smaller scale line of the WW2 warbirds would be very nice. I like EPP foam myself. EPO seems too heavy for small planes However, EPO wing sounds good.

HEAR HEAR....epo is too heavy ....
A well made epp / eps is great stuff .
Dec 21, 2011, 02:10 PM
Registered User
thanks for the build threa
Dec 21, 2011, 04:30 PM
Doing it in the Lateral Axis
modfly's Avatar
Quote:
Originally Posted by Joe 1320
That's how I built mine, no dihedral and carbon spar. I don't know about the increasing the speed envelope, usually undercamber is meant for to increase lift for slower flight. no doubt that this mustang works. Mine is a hoot with a blue wonder on 4s and a 6" prop. Probably a little too much but what else is new.
Well OK, The under camber wing does give it more lift at lower speeds however, that does not prevent the plane from flying fast as well so it has a wider speed operating range or envelope with the under cambered wing. I'm not a aeronautical engineer so I'm using general terms here. I have other Mustangs with out wing under camber and they do not have the low speed flying range this one does. It does seem to take more power to get a U-wing equipped to fly fast however. Not a problem for mine with the Bl inrunner and IPS GB.


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