JoeMamma

For you fellahs wondering about an electrically operated tail wheel, go to the Robart website. There is a picture of one at their Home page.

If you dig through the website you will also find a statement dated January 31, 2012 about their soon to be released, new electric landing gear.

Joe M.

Mustang Fever

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Chandley:

Go for the 95. I mounted mine inverted and used a macs muffler (same one as for the 75). The only thing you have to do before starting up each trip to the field is pull the glow plug and spin it over with the starter to make sure there's no oil in the cylinder head.
I used a Hayes 12oz slim line tank. It's shape makes it possible to get the centerlline of the tank almost lined up with the spray bar in the carb.

The 95 with the macs is actually a little bit lighter than the 75.

chandley43231

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thanks soo much bro

chandley43231

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fever i have to ask you said you have a mac 75ax pipe on the 95ax well will the same sive wrap around mufffler that would fit a 75 ax work on the 95 ax????

Mustang Fever

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I don't think so. The pitts mufflers are different. The Macs is a simple pipe, and fits because the 75/95 exhaust ports are the same size and bolt spacing. Everything else is different.

chandley43231

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OK thanks that is what i wanted to know i had a 1.20 ax on my bird last yr an found it with to much power just half throatel was all i needed plus the wight i had to come up with mad scientist idea to spread the weight out across the plane our war bird gooroo who builds an fly's in top gun every year asked my what such the heaver an more powerful engine so i took it off an put it on my revolver 70" that needed one anyway an just so happen to have a slim line Pitts muffler unused lying around so i said why not  2 oz is 2oz put this 95 ax i have not used yet on it an try it out but i want to buy a wrap around muffler like i did for the 1.20 ax form j-tec  they are the best but wow 90 bucks shipped an if it is the same bolt up like the 75 ax n that would be great sense i don't have physicils motor side by side to check this... sad to say i have the used wrap around for a 1.20 ax rear discharge in cowl muffler an it cost the same price if you or any one can let me know if the 75ax an the 95ax match  they why can i then put on a in cowl canister muffler?? thanks                                         Carl the city plumber

kurrikan

Hi,Still working wiht the mustang, adding some details.Cockpit is finished,and the entire plane is wheatering. have install retracting tail wheel,and now it`s time to think wiht tail gear doors!! pufffffffffff

chandley43231

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hello all  just  installed the sence return to me 95ax today an ran up up on its first tank of glow took the canister header an in larged the opening to the bolt  inlet with my drimal  it apears the  small balb drimal blade will cut an grind aluminum an i opened the inlet to exhost header an wow what a difeance  the canister muffler mounted to the fire wall is greati put a 15x6 blade on an will try a 16x8 later after rebreak in of my 95ax i can wait for the robart electric where the techs told me they will fit on my 608hd   housing wheather was great  yesterday got sun poisoning got no rest so i had to stay home  all good 

Mustang Fever

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Looks like spring has come early, here, it's gonna be in the 50s & 60s this week, and all the snow is melting away. Wind is supposed to be OK on Wednesday.

I took the 'stang out on the driveway yesterday and cranked up the OS 95AX. Ran like a kitty cat. I'm getting 9700 RPM on a 14x8 MAS Scimitar prop, good for over 11 pounds thrust and about 75mph. The bird performed well with the 75AX, but the 95 just makes her shine. Best part is I can get almost 15 minutes flight time with a little throttle management.

Wednesday she's goin up.

chandley43231

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lol mine is too i have a 95 ax rebuild by hobbie services an have 2 tanks through it  16 oz    Wednesday will be great here in Columbus too i have the header an in cowl muffler in stalled an it sounds sweet  i opened up the header pipe for better flow should work great   keep up updated fever

CorsairJock

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Got a PM:
To my knowledge: the stock retracts are unchanged. The problem seems to be that the molded housing are made from a material that it too brittle, and therefor subject to cracks and/ or breaking. I don't think it is a matter over over-tightening, because the cracks are occuring by the trunion 'bearings', NOT the mounting holes (in my experience, anyway). Possibly it is caused by slight mis-alignment of the mounting rails, don't know.

My recomendation remains: replace them with aftermarket retracts. Even the Robart units (with molded housings) seem to hold up a lot better than the stock Top Flite retracts.

If I were to build another one: I would use Robart mechanical (HD/ 3/16" strut wires) coupled with the servo setup that I have on my current one (independant, lo-profile, digital, metal-geared, hi torque, PROPORTIONAL servos. There are many other options out there, and most of them are good ones. The bottom line tho (IMO): the stock ones just don't cut it.

Mustang Fever

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Ditto to all that.

I couldn't maiden mine due to the stock retracts wanting to fold up during taxi.

I replaced them with the Robart HD mechanical, 85 degree units, using a Hitec retract servo. Even those weren't ready for prime time- Robart made the set screw for strut retention too short, it might as well not even be there. I ended up using the struts that came with the bird, and JB welding them in place so they won't move.

The factory retract rails are not very well installed. First bump you hit on takeoff and they will rip out. I opened up the sheeting above the rails and poured a lot of epoxy mixed with milled fiberglass in there, so that all the various pieces are filleted to each other real good.

Third season, now, and no problems.

Mustang Fever

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Took her out today in winds I should have left alone, but flew well and had fun. Played with the 95 a lot trying to get around a mid range hesitation, and it turned out to be a bad plug.

chandley43231

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good the hear you  flew it  fever i got mine out last night an had the great Mike barbee coach me on man was i glad he was there i had 2 16OZ  tanks through the 95ax  so we checked out the engine tone an set it  to get it up to high RPM s   leaving a few clicks rich to brake the 95 ax back in.. i have the in cowl muffler with header  i used my dreimal to in large the header inlet to roughly match the open of the 95 ax exhaust port .. funny thing was i mid range it did cut   so we restarted an took it off the field not trying to over power the bird  just nice an easy  i got  the gear up an poof  the bird dead stick so then mike goes into action calmly talking me down to turn strait for the field   then right before i turn to swoop onto the run way drop my gear

Mustang Fever

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Mike:

Glad to hear a near disaster was avoided.

Did you guys adjust the low end needle? The whole AX series comes from the factory with the low end needle set way too rich for flight. After a tank has been run through, it needs to be adjusted. Then the high end checked. Then the low end readjusted...........etc etc etc.

I can talk you through the procedure if you're not familiar with it.

chandley43231

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yes sir i c that i is an has not been richened up  i did my 55 ax an my 1.20  but it seems the 95 is   so little an fever my name is carl not mike  mike barbee i a pro builder an flyer   he builds an flyes in top gun every yr  one day i will do the same   but thanks fever

chandley43231

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this guy is amaizing  with his flight  here is on of his videos at the end of his flight he lost his prop an still brought the Texan  a-6 back ok his engine is a turban        http://www.youtube.com/watch?v=VaAQ0uonke8

Springer 2

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I also have a Electic TF P-51 and I put in the Eflite 60/90 electric retracts, used the stock strut and put on robostruts drilled to accomodate 2 of the gold spacers to stregth'n. The work great, strong and no failures, the stock gear is junk but I love the plane. Since I have done the same conversion to a TF P-47 and an ESM spitfire and still plenty strong gear and the Spit has a Saito 180. Love the electric retracts.

Mustang Fever

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I really wish Eflite would make some 60-90 size electric rotating retracts. I would dearly love to do the TF 60 size Corsair ARF, but no way am I going to use air retracts. Never again. Big PITA.

iflircaircraft

The E-flite 25-46 100 degree rotating retracts (they are rated to 10 pounds) will work on the 60 corsair ARF. I have them on mine although not really tested since I've only flown the model once.
I didn't want to hi-jack this thread since it's about the P-51 but thought you might want to know.
I did some mods to the retracts and mounting rails. PM me for details on my mod if interested.
While here I just ordered the Top Flight 60 P-51 from tower. Has anyone used or considered the wingspan electrics for the P-51D? They look well made and have a built in sequencer.
I'm also considering using my 91 SP RCV or get the 95V 4 Stroke since the OS 91 has been discontinued.
I like the 4-strokes



Tom

Mustang Fever

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Did your Corsair really come out to under 10 pounds? If so, I might go try one with the Eflite electrics. Fly it a few more times, tho, I'd like to hear how it does.

I don't think you'd like the P-51 with a 90 four stroke. I have the 95AX 2S in mine, and I wouldn't want any less power or speed. (14x8 @ 9700) I think the P-51 with a 1.20 - 1.50 4S would be about perfect.

chandley43231

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lol tipstalled my bird while comming in for landing on a dead stick tore out the wing bold housing an back bell agian repairs are under way  have the 95ax with in cowl muffler  an  it flew great  maybe i need a remote igniter or not i have a u tube vidio of my last repair  my bird came in nice but i let a guy tell me  change you expo to a hire rates an god was that stupid on a dx 7  dont do that 

iflircaircraft

Come to think of it I do have an Evolution 1.00 NX 2S which needs an airframe. I do prefer 4 strokes but with the plane and electric retracts. robo struts and wheels I will be stretching the budget.
If I don't like the 2 stroke in her I can always get the 4 stroke later.


Tom

BTW: The corsair is 9 lbs 13oz dry.

Springer 2

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Before I turned my p-51 into to electric I had a 125 saito and it was perfect with strong performance. I still ave a TF P-47 with 125 saito With same top performance, great choice for nitro 4 stroke.

Harvey Mushman

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What distance back from forward wing mounting bulkhead do you guys set for the CG on your TF .60 P-51 ARF?