Mega powered combat P-51

[drksyd]

Just got a new toy last night, the Great Planes .25 P-51 for combat. Thanks synwpn for letting me know it was in.
Will be using the same power setup as my Corsair: Mega 22/20/3E spinning an APC 9x7.5E prop with Phoenix 45 controller. It uses a single servo for ailerons so that will be an HS-81 but will have to see what I have for the elevator.
The P-51 should be a rocket as it's smaller and lighter than the Corsair.

[drksyd]

Some pics before I go to work.

[CUBANO8]

Looks like this would be an easy build. Are you going to enlarge the firewall, for airflow thru the fuselage, or leave it as is?

[drksyd]

Yes, I will put more holes in the firewall. Basically after that just need to add some ply to strap the battery to.

[Synwpn]

you're welcome drksyd!

i've got a line on several of Pica kits and i think i've got our lhs lined up to pick up the last of the remaining stock. these are the 1/12th gas combat planes. i'm going to use the axi 2820/10 on the first one.

where did you get your mega from? that corsair sure does move out on it!

[drksyd]

I got them from Mark Turner, he was blowing them out in the for sale forum. I picked up a couple of them and turned out perfect for the Corsair and Mustang.
The Mustang looks small, should really be quick coming in from a nice dive and low fly by.
If I hurry I can have it flying on Sat but more likely and hopefully on Sun.

[Synwpn]

great! dont have an 'accident' with it before i get there!

[the Swamp Fox]

looking good so far ,,,

I really like the motor for these size planes .

My Global arf Texan .15-.25 is 3 lbs easy but the mega combo hauls it around with ease . So I'm sure your '51 will be a rocket !

I have a video of flight #2 here

http://static.rcgroups.com/gallery/data/500/24569texan.WMV


... no wot at all ...since that vid I've gotten rid of the vibration, propped down a bit, and get 10-15 minute flights .

good luck ~ !

[Synwpn]

very nice SF! heh, i thought you were landing on a saltflat type road at first.

that mega combo looks to be the best for this sized warbirds. going to need to get one for one of the pica kits i got coming in i think.

[drksyd]

Nice job on the Texan, I have that kit too, just need to finish it. I'll probably end up putting an Axi 2820/12 in it since I got one from the HL sale.
Don't worry Dave, it won't be ready tomorrow. Just finished soldering up 2 more TP 3S2P's but noticed one has a puffed cell, dang. That's Ok, now I have 2 batts so I can fly the Corsair twice as much. Would really like to bring the P-51 out on Sun though.

[Synwpn]

dammit. got stuck at work again.

did you maiden it?

[Eljimb0]

Drksyd,
How is that P51 doing. I am right behind you with another one waiting to hear from you before I launch,
Thanks,
jimbo

[drksyd]

Maidened it on Sun and it flew but needs some minor changes. Had it nose heavy from the instructions (since fuel would change the cg) and got it trimmed but kept climbing on power. Added some down thrust and will change elevator servo as we noticed it did not center after pulling up.
It's fast but harded to fly as it's smaller and gets small quick. I like the Corsair better (not as scary) but this thing is fast.

Jimbo
What will you power the P-51 with? Only problem is with the launching. Weight is too far forward for where you can hold the plane so you need to lob it underhand. I had someone help me and it rolled left rather quick so good thing I had both hands on the radio.

[Eljimb0]

400 watts into a special one of a kind motor. No torque special!
how much does your Mustang weigh?

[drksyd]

AUW was just under 2.5lbs, with the addition of the decals I'd say an even 2.5. However, spinner flew off while running motor up so no spinner for now.
Interesting prop setup. What size props are those? No torque meaning in-runner and all rpm to spin the props?

[Eljimb0]

Thanks,
That is about how much mine weighs. The front prop turns one way and the back prop goes the other way. They cancel each others torque. The front bulkhead of the "combat p51" is pointed to the right. I had to make a mount for the motor to straighten it out. (Big PITA). Please post more info about flying your plane as you learn about it.
thanks,

[drksyd]

Will do, just need to get new elevator servo before she goes back up. May need to look for a new prop if I want to use the spinner, or at least shim the prop so that the trailing edge clears the back plate.

[Eljimb0]

Drksyd,
I filled the original cowl up with plaster of paris. I took out the plug and sanded on it to get rid of the oversize diameter spinner and fuse and shrunk a 2 liter coke bottle around what was left. The new cowl is set for a 1 3/4 spinner rather than a 2 1/2. It also fits tight around the whole fuse. No gap
at the bottom.
jimbo

[drksyd]

Cool, that looks much better. Would you mind making another one and selling it to me? It would be nice to run a smaller spinner.

[Eljimb0]

PM me your address and I'll send you one.
I have relatives buried at Kawaiahao Church. It will be a tribute to them :)
Jimbo

[drksyd]

Cool Jimbo, thanks. Got any other relatives here. West coast and Vegas are the most popular areas that locals move to.
What servos are you using? You might laugh or even have a heart attack but I'll be using the GWS Naro+F HP's. I flew it with even smaller (less power) servos and it works fine. I'm using a Berg 5 channel so that helps keeping the weight down. The battery is by far the heaviest thing.

[Eljimb0]

My servos are hitec HS-55's. I was hoping they were big enough.. now I know. Where does your plane balance? how do landings go.. I'm thinking that the scoop will get knocked off every time.. what are the aileron and elevator travels on your plane... is it twitchy or does it fly nice ... how are the rolls?
All my relatives are long gone except one cousin.
jimbo
I made your cowl this morning.. here is the link to the thread.
http://www.rcgroups.com/forums/showthread.php?t=403656

[drksyd]

I think the 55's have 18 oz/in torque while the Naro's have 24 oz/in. The 55's should do Ok, I have Waypoint 084's in there now and they have 21 oz/in.
I just checked and I thinked I had it balanced at 1.5"s. I'm sure anything ahead of the suggested 2.5"s will be fine. I put it into a dive at 45 degrees and cut power and she held straight. Didn't get to fly it much as the elevator servo was not centering.
Just weighed it w/out batt and it's 28 oz and the batt is a little over 10 oz. Not to forget, I have no spinner.

[Eljimb0]

Thanks,
My plane weighs almost the same as yours. (+ -)1. oz. How far do you have travel distance on your flying sufaces set.

[drksyd]

Nice conversion to the racer, looks like it'll be nice and fast. Will you be maidening it this weekend?
I haven't/don't measure the travel of the flying surfaces. Basically alierons are 100% unless servo is binding and just eyeball the elevator so that it doesn't have ridiculous deflection, I'm guessing around 5/16ths to 3/8ths. I don't use dual rates or expo either.
Waiting for a friend (lhs/mohs) to call so I can pick up the Naro's and put them in for tomorrow morning.

[drksyd]

Got the Naro's and put them in at the field. The additional downthrust really made a difference, doesn't have tendency to climb at higher throttle positions. The roll rate is blazingly fast but I'll leave the ailerons as is. It's pretty darn fast and scary as something is happening. I'm thinking it's glitching since it happened several times during the flight. One thing is that plane will drop a good 3-5 inches then go back to where it was, same thing as hitting an air pocket. The nose doesn't pitch up or down during the process. Another thing is it'll roll the wing a little
Second flight was a no go. Didn't get a good toss and it went in but no real damage. ends of ailerons nearest wing tip got pulled out and minor damage to radiator scoop

[drksyd]

Jimbo
Did you fly the P-51 yet? Just curious, it's a handfull to launch.

[Eljimb0]

Not yet,
still getting my nerve up. Soon
I can feel it coming,
jimbo

[drksyd]

Had a successful launch today which I will try myself next time. Toss it like a combat, hold top of fuse behind canopy (in front of canopy for you) and toss 80+ degrees at full throttle. Of course, this works for me, but I'm thinking your outrunner has more torque (thrust) and should pull you out easily.

[drksyd]

Jimbo
I got the cowl today, thanks again. Looks good, may actually end up convering it to match the fuse if I can't find correct paint.

[drksyd]

Bummer. The P-51 went in today. Coming in for landing and must have slowed it down too much and stalled it. Damage didn't look that bad but the firewall is cracked and I can't straighten it and the former that supports the front of wing is in pieces so I'll literally just hang it up. May get another one down the road but I have more planes to work on for now.

[Eljimb0]

Crap!
I hope the motor didn't get the hit. Thanks for all the advice. Any more words of wisdom on the launch tecnique? Did it tip stall coming in?
Sorry,
jimbo

[the Swamp Fox]

sorry to hear that .

those are the worst ,,, the ones that don't seem so bad .

best of luck with your upcoming builds

take care ~

[drksyd]

Don't know why but I'm not getting notifications of posts for any thread I was suscribed to.
Anyway, the motor looks good, haven't run it yet though. The combat style launch I described in post 29 worked for me. Best way is to have someone launch it for you and which ever way is the easiest that you could do yourself is the one. I balanced the plane about 1.5"s from the le. With all the weight up front it wasn't possible to hold the undercarriage behind the wing to do an overhead launch.
One of the guys here has one and he's using an Axi 2808/20 and it flies pretty good. He's using a 3S2P but I'm not sure if it's the TP 4200mah. I'll ask him and see where he's balancing his plane. He just does underhand toss almost parallel to the ground.
I'm really not sure what happened, it was pretty fast, but bottom line was a tip stall.

Good luck with your plane Jimbo. I really wouldn't worry too much, it flies great. Just don't slow it down too much and you'll be fine.

Swamp Fox, I really need to finish my HET F-18 so I can then work on Miss America. Spending way too much time on the PS2.

[papasmurf]

I picked up one of these the other day (it's on it's way) and have been contemplating what power system to go with though it will be brushless and lipo. I read the combat corsair thread and several used the axi 2814-12 (which I have in my super sportster) and someone even had success with a typhoon 15-10. I have a 2808-24 lying around but it is much better for a slower flyer I would think. I know people were haveing problems with balance and having to add alot of weight at times to the nose. Where are you mounting the batteries? I would like to get away with a single 3S battery if balance allows and cut a hole toward the bottom of the firewall for it partially to reside in. I may be going down the wrong road though as I have not seen the plane in person and how large it is. BTW...I noticed replacement parts were available at tower and I thing the fuse was pretty fairly priced. Could there be a resurrection?

[drksyd]

Maybe down the road sometime, but with a new kit. I've seen one fly with a 2808/20 and it fly pretty good.
With the 2808 you could get by with a single 3S pack but the balancing part may be tricky.
There's a Mega 22/20/4 in the for sale forum and that would be a great motor for the P-51. You'd need a 3S2P but I'd rather carry a larger pack then dead weight. I balanced my plane at 1.5"s from leading edge at the fuse. Basically put the pack (TP 3S2P) as far forward as possible and that was good to go. Put her into a dive at about 45 degrees and it held steady so cg was good.
It's not much larger some park flyers so it gets small fast if you have a hot setup. In fact, it's the same size as the Park Zone P-51. For my money I'd rather get a sturdy balsa plane.
Good luck with yours.

[papasmurf]

Thanks for the advice. I noticed the mega for sale this morning but I have not had any experience with the larger megas (just the 16-15 series) and was kind of unsure of what it was capable of. I do not want to add dead weight either which is why I will probably use something like the mega or a medium sized outrunner. Out of curiosity, do you think retracts would be a possibility without hacking the wing too much. I know it was discussed alot in the corsair thread and I do not think anyone succeeded in doing it. With the planform of the mustang wing, it looks like it would be alot easier.

[drksyd]

I just made an offer to trade for the Mega but if you plan on using it you should get it. If you prefer an Axi, I have a 2820/12 that would work but on 4S2P. An Axi will give you more thrust, easier hand launch and more scale flight. The Mega will be faster and more exciting, at least with the 22/20/3E, haven't seen a 22/20/4 yet.
I really don't want to go through all the work at this point for retracts so haven't thought much of it. A lot of re-enforcing and a little cutting but should be Ok. Don't have the skills yet so hate to butcher a pertty plane.

[papasmurf]

I know what you mean. I am pretty sure it is covered in "china kote" covering and it is very hard to match. At least my GP super sportster was. I am looking to stay with a 3s (3S1P or more likely 3S2P) setup as I do not have but one or two 2S packs left and they are much too small. I checked the number at "the great motor test" for the mega 22/20/4 and it seems doable with the amps in the low to mid 30's when spinning a 9-10 prop. I was looking for a pretty quick setup. I know the axi 2814 I have does not make my supersportster particularly fast though alot of it could be the airframe and drag. Was that mega labled wrong? It seems the KV was off when I checked the specs on a website?

[the Swamp Fox]

hey all,,

mega motor says 1510kv on the 22/20/3E

1480kv on the **/**/4

I run the 20/3E on 3s2p 4300 .Amp draw is 40+ static on a 9x6 APC .

best of luck ~

[papasmurf]

I bought the mega 22/20/4. Then about 30 minutes later a new combat mustang kit with a hacker 10XL outrunner popped up and I bought it too. It was a really good deal and I have really wanted a hacker outrunner but it seems the KV is going to be too low for 3S and 6S would probably be way too much plus I would have to use a seperate BEC. One of the planes will probably get sold or there is a slim chance I may mod one of the wings for retracts.

[drksyd]

I saw you picked up Bruff's P-51. The outrunner will work and should have some decent speed. If you're really looking for speed then the 22/20/3E is the way to go. I ran mine with a 9x7.5E prop and it hauls but can't hold it at full throttle too long unless you have the new TP 4200mah 3S2P Pro Lites.
Try it with the 22/20/4 and 9x7.5E and it should be fine.

[papasmurf]

I got the 4 turn mega. P-calc was showing the amps to be in the mid 30's I think so there is still some headroom to take it further. The outrunner probably would benefit from a 4S setup I would guess. I am thinking I will save it for something else in the future. The retract still linger in my mind when I read how the plane was somewhat difficult to launch. The one on the e-flightline video seems to have no problems.

[Eljimb0]

I got the 4 turn mega. P-calc was showing the amps to be in the mid 30's I think so there is still some headroom to take it further. The outrunner probably would benefit from a 4S setup I would guess. I am thinking I will save it for something else in the future. The retract still linger in my mind when I read how the plane was somewhat difficult to launch. The one on the e-flightline video seems to have no problems.

Papasmurf,
would you please post a link to that video,
thanks,
jimbo

[papasmurf]

http://www.rcgroups.com/forums/showthread.php?t=410905&highlight=combat+mustang+

[drksyd]

Looks not bad. An outrunner or geared setup will be easier to launch as you end up using a larger prop. Their 11x5.5 puts out way more thrust than my 9x7.5 but I can assure you I had more speed. If they clocked their P-51 at 90 then I really wish someone here could have clocked mine.
With the 22/20/3E I literally had unlimited vertical, only reason I stopped is because after a short while you can't see it anymore. Axial rolls were insane, I don't limit the aileron throws. I think a 10x6 with the 4 should work out great and be easier to launch.
The replacement fuse looks like a great deal but parts not available til late Oct so that sucks. I'd still rather get a full kit though.

[papasmurf]

the hacker motor is really nice looking. I am surprised they can still sell axi's when the prices are so close with the hacker. The plane looks pretty nice, but needs alot of the covering ironed back down. Unfortunately both the wings suffered moderate to substantial damage. I am going to try and get them replaced as tower is out of replacements. If all else fails, I guess this is an excuse to build in the retracts.

[drksyd]

Were your wings damaged in shipping? It'll be a wait for the parts, it says late Oct.
The Hacker outrunners are new and am quite sure are made by Eflight and just labeled Hacker, same as the matching ESC's.
Although I wouldn't mind getting another one, mostly for the speed, the Corsair flies better. You might want to try one.

[papasmurf]

The corsair just does not do it for me at the moment. I am betting it will be more than late oct before the parts arrive as I have seen the same things happen with some of the other GP replacement parts. Any idea what size retracts I should be looking for?

[drksyd]

I wouldn't doubt the parts coming in later. Just won a Spit from eBay. Looks like a copy of the Ripmax Spit, looking forward to that one.

[papasmurf]

I got most of the fuse assembled and stripped one of the wings to repair the damage. I was trying to get the receipt to get them replaced but have not heard back from the seller and decided to hopefully fix the damage myself. Someone mentioned the robart micros or the GP .10 size retracts but does anyone have any experience with these. Are they going to be strong enough for a 2.5+lb plane? It seems there is a pretty big gap between micro and park flyer retracts and the more common .40 size.

[drksyd]

Sorry but not able to offer much help with the retracts. All I know from reading other posts is that the .10 size retracts are good for the "in between" planes.

[papasmurf]

The basic plane is now assembled. I still need to install the aileron servo and mount the motor. I have not purchased a mount for the mega yet and may try one of my typhoon 15-10's for the time being assuming I can make CG and still have the option of changing powerplants later. With a 10x7 or a 9x7.5 I think it will fly and should be plenty light. I should have been finished by now but I lost some time fixing the sheeting on the wings and recovering them.

[drksyd]

Is the Typhoon an outrunner? I saw a video of a P-51 with a Hacker outrunner, not sure which one though but it was fast.

[papasmurf]

It is an outrunner. I think about 1500 kv. I have two and have never used them but someone used one on the corsair with success though they had to add alot of weight. There is also a video towards the end of that same thread with a corsair and hacker outrunner that is amazingly quick as well.

[drksyd]

Just ordered another fuse and tail set, looks like I'll be ripping the sky again before Xmas.

[cherokeetestpilo]

It is an outrunner. I think about 1500 kv. I have two and have never used them but someone used one on the corsair with success though they had to add alot of weight. There is also a video towards the end of that same thread with a corsair and hacker outrunner that is amazingly quick as well.


Hey papasmurf,

I have been flying around my p51 combat mustang for about 3 or 4 months. I'm using an axi 2808/24 with AWSOME results. I'm using 1 hs81 for the ailerons and one for the elevator. I designed my own mount and have a 10 x 7 scimitar prop on the front. IT HAULS!!!! I have about 40 flights on it it and the only thing I dont' like about it is the belly landings. These mustangs are a far cry from the tame little ones I sent you the cowl for. They come in pretty hot and retracts would be nice. I've been toying around with the idea quite a bit lately. I'll definetly be installing some retracts as I have the whole plane "uncovered" right now to recover it in the "Cripes A'Mighty" color scheme. By the way, I'm using one 3s kokam 2000 (15c) that gives me about 15 mins flight. Let me know if you find some retracts.
I also have the combat corsair which takes quite bit more power than the mustang. I have an axi 2820/10 in that one and seldom get above half throttle as it develops a high speed flutter on the elevator. Even at half throttle it keeps up with the stang. On the corsair I have to use 2 of those Kokams previously mentioned to keep it balanced as well as a custom mount up front for some weight. Sure is impressive in the air.
Take care

[papasmurf]

Good to hear from you Jessie. I have not flown mine yet...It has been ready for weeks but for some reason or another I just have not had the nerve to fly it. I have the typhoon installed but it vibrates through the mount I am using because of the distance from the firewall. It is probably not a problem but just sounds bad. I have another one I need to sell that has never been completed that I need to get listed. I sold my AK mustang today....never got it in the air after that first time. I am contemplating selling my completed mustang too as I found one with retracts which is what I really wanted. I ditched my big motor ideas for the combat mustang as I did not want to have to bungee launch it and I figured the landings would be a bit more rough with the added weight of the second pack.

[cherokeetestpilo]

It's a shame you're getting rid of it. It's actually A LOT of fun to fly and you don't need a big motor. As I said, I'm only using an axi 2808/24 with superb results. The plane really moves!!! The mounts I designed produce NO vibration whatsoever and I'm only using 1 pack. You don't need as much as you think to fly this plane. And as far as bungee lauching.......not necessary. I grab the plane right behind the belly scoop and give it a medium toss. NO PROBLEMS. It takes right off with the 10 x 7 scimitar and keeps going. Landings are hot (but then, most mustangs are), however, I have yet to develop any dents in the thing from landing. It's extremely stable in the air but you do need to fly it. What I mean is, it's no E-Starter :rolleyes: . Have you found any retracts that will fit this plane? What mustang did you find that already has retracts? My next project is to complete the Harvard (AT-6) that I started in the summer. 60" wingspan. That will be nice in the air.

[drksyd]

Even with the larger Mega and a 3S2P pack (heavy setup) you don't need to bugee it. I grab it from the top behind the canopy and launch it like a glo combat plane. With the speed and weight, it has a lot of authority in the air and will awe everyone.
One of the guys here flies with an Axi 2808 and it flies fine, very flexible with power systems as it's not that large and fairly lite.

[drksyd]

The only kits I know of is Laser Art (http://www.laserarts.com/product_info.php?products_id=201&osCsid=5e606416bfbe26742882cc868055dc06) and the Hyperion (http://www.rcgroups.com/forums/showthread.php?t=448228) which hopefully will be out soon.

Don't give up on the P-51, it's really a great plane.

[papasmurf]

The hyperion is the one calling me.

I was referencing bungee launching when I was planning on installing the mega 22-20-4 and 3s2p packs.

I have two of the combat mustangs and am only planning to sell one the uncompleted one at the moment.

[cherokeetestpilo]

The hyperion is the one calling me.

I was referencing bungee launching when I was planning on installing the mega 22-20-4 and 3s2p packs.

I have two of the combat mustangs and am only planning to sell one the uncompleted one at the moment.

I agree that the Hyperion P-51 is a much nicer plane than the lazer arts one. Although if I had that one I'd probably recover it as the covering is a bit "GI Joe'ish" :p

I wonder if they sell the retracts seperatly or who makes them. One of the things I like about the Combat mustang is how incredibly durable the plane is. It's had some pretty rough landings when I started out with it and it still has no damage. The only damage sustained is when I had the cowl off and my 5 year old accidentally stepped on it. :rolleyes:

It cuts through the wind as well with no ill effects.

[drksyd]

The weight of the 3S2P pack makes it a bit heavy up front so it's not really possible to launch it holding from the bottom behind the wing. The underhand launch does work though. I use a 9x7.5E with my 3E, with a 4 turn a 10x5 or 6 will give you more thrust for an easier hand launch.
It's definitely a trade off with power for weight but I love the extra power and speed. You should see all the guys watering the field with their drool and getting a stiff neck watching it go vertical.

The Laser Art kit is nice but it's a park flier. I really like the Hyperion but if it's $200 for a .25 size plane there's others I would buy first. Our fields we fly at aren't the greatest for retracts so I'm not really pressed to get it. It sure is nice though.

[cherokeetestpilo]

I agree with the field condition concerns. A few of the fields we fly at aren't suitable for retracts either. However, there are 4 or 5 fields around here with great surfaces for retracts and it would be nice. The main reason I'm looking to retracts is because of the fact that around here at this time of year it gets pretty wet, belly landing the combat mustang can all sort of moisture and wet grass up the cowl into the motor area. Not good. I can see what you mean that the extra weight with the 2 pack setup would not allow for hand lauching behind the wing. I use 2 3s kokams in my corsair but it balances out nice and allows me to launch it from behind the wing like on the mustang. Anybody have info yet on retracts for the GP mustang? I haven't had time to shop around. Working on segmented flaps for the corsair though, so retracts are in the works for that plane as well. :)

[papasmurf]

With the fairly light setup you are running the GP .10 size retracts may fit the bill. I think there is some robart retracts that would work pretty well too (micros?). It seems there is very little in between sizes such as the .10 size and the much larger and heavier .40 size. That is kind of why I gave up on the idea as the .40 size are usually too big for the wing.

[drksyd]

cherokee
I'd like to see how your split flaps come out, that's way too much work for me. Even adding retracts is out of the question for me. If you want to make the retracts scale then I think you'll have to look at Robarts or Spring Airs to find a rotating unit.

[cherokeetestpilo]

cherokee
I'd like to see how your split flaps come out, that's way too much work for me. Even adding retracts is out of the question for me. If you want to make the retracts scale then I think you'll have to look at Robarts or Spring Airs to find a rotating unit.

Yes, I agree. However, I may machine my own units. I do quite a bit of that at my shop. I'll keep you posted on how it turns out. I frequently offer prototypes to people I talk to regularly for free for testing, so.....we will see.

:)

[drksyd]

Cool. It's always great to have knowledge and means to make things yourself. There are quite a few planes within 36 to 48 inch wingspans that could make use of retracts, might have a nice little niche there.

[Bob Cimarusti]

I've been running the G.P. corsair with a Himax 2825-3643 & 3S2P Kokam 2000's (15C)
spinning a APC 12x6E prop and it has been a great combo for me. C.G. was right on
the money and it will fly out of my hand with just a slight underhand toss. Great
acceleration and 10 min. flights are no sweat. Only problem is the aileron servos are
right at the bend of the wing and belly landings are tough on them. Using HS-81's and
switched to metal gears which helped and also installed balsa rails right over the servo
horns which seems to have solved the stripped gear problems on landings. Retracts
would be awesome but don't think it's likely to happen. Good flying everyone.......
Bob

[cherokeetestpilo]

Hi Bob,

I'm using the same battery setup as you, the motor option is different though. I have an axi 2820/10 in the front right now and it hauls. I've been using HS-81 metal gears from the beginning so I've never experienced the the stripped gears in this plane. Why do you say retracts are unlikely? They would be great in the corsair and totally feasable. One of the advantages the corsair has over the mustang is the fact it can slow down a lot better for landings. A nice flair at the end will keep those servos from touching down too :)
Take care

[papasmurf]

There is a thread in the parkflyer forum about the corsair detailing some retract discussion and attempts. I think there has been at least one person that has accomplished it. It seems the weight and complexity put most off especially if they were going with a somewhat scale setup. I agree it would be cool though.

[cherokeetestpilo]

There is a thread in the parkflyer forum about the corsair detailing some retract discussion and attempts. I think there has been at least one person that has accomplished it. It seems the weight and complexity put most off especially if they were going with a somewhat scale setup. I agree it would be cool though.

Yes, scale retracts are a bit of a challenge on these mid size planes. However, they are combat scale and as such, too much scale perfection might be a bit off and kind of overkill. I have a few other planes that I've scratch built that are true scale planes. The mustang and corsair I pretty much resign myself to just having fun with :D

[papasmurf]

If you get a chance, please post a pic of how you mounted the axi. I have a hacker A30 about the same size that I may try and use. I was thinking about using the reverse mount with the standoffs that screw into the firewall. Esprit sells some nice mounts like that but by the time you buy all the parts they are about $20.

[cherokeetestpilo]

If you get a chance, please post a pic of how you mounted the axi. I have a hacker A30 about the same size that I may try and use. I was thinking about using the reverse mount with the standoffs that screw into the firewall. Esprit sells some nice mounts like that but by the time you buy all the parts they are about $20.

I'll P.M. you the pics. Worth about $5 in materials....or....if you can wait a week or so (due to christmas mail lag), I'll send you one for free that you can try out.

[papasmurf]

Did you ever get any pics of your motor mount cherokee? The mustang has kind of been on the back burner as I have been debating whether to keep them or sale them to get the hyperion. For the moment I do think I will finish the one with the hacker setup. I thought I had a reverse mount for my hacker but it seems it is for an AXI 2808 as the screw holes are no where close to matching. I may just cut one out of some 3/16" ply or so.

[Olly Malone]

Is this thing hard to convert becasue i have been looking for a nice balsa ARF P-51.

[papasmurf]

It is pretty simple...if you are using a can motor you can use a heatsink mount or clamshell mount that will fit right on the stock glow motor mount. I used an outrunner and mounted it on standoffs with some CF tube and bolts. It took about 20 minutes to do and seem to be pretty stout. Other than that, all you have to do is glue some velcro straps in for the battery or make a battery tray.

[Olly Malone]

Hi guys. How fast would you estimate the p-51 would go if a set up im looking at has a 53mph prop pitch speed?
BTW. The setup is a axi 2808/20 on a 10X6 with a 3s1p setup.
olly

[papasmurf]

I think it would do that pretty well...ask cherokee test pilot as he was running the milder KV 2808-24 in his and said it was pretty quick. You might even prop down to a 9x7.5 or 9x9 if it will take it.