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RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/9/2003 4:15:47 AM   
pittsdriver



Posts: 820
Joined: 2/25/2002
From: Twin Falls, ID, USA
Status: offline 		Lordus, I like the Hitec 645MGs. They are standard size with 109in oz of torque and are around 35bucks. Don

(in reply to splais)
       Post #: 76

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/9/2003 6:33:40 AM   
Lorduss


 

Posts: 242
Joined: 3/11/2003
From: Seal beach, CA, USA
Status: offline 		i like those servos also, i use them for the steering on my tmaxx and savage, and for my rudder/elevator on my extra 300.

on the flaps i imagen i could get away with a little less of a servo, but more than a standard ,even for my alerions i imagen i could use 605s or 615s like i have on my extra,

im just trying to plan out the right combo without doing much overkill. because id like to cut cost where i can.
should i go with regular or HeavyDuty extentions for the wing servos ?

i was told a 225 mg would go good on the throttle setup. and maby a standard for my tail gear.

i do plan on making this more of less my speed plane, so i have to take that into precaution when thinking about my servo selection. id like to be able to crank the throttle and hit some real high speeds, not going with any kinda special motor, just my extra is not realy what id consider a speed plane, more of a 3d machine.

(in reply to splais)
       Post #: 77

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/9/2003 1:09:55 PM   
BobH


 

Posts: 4314
Joined: 4/1/2003
From: Springfield, VA,
Status: offline 		Steve, the only thing that whistles while my plane is flying is ME LOL!.. Naaaa its not an issue. I have seem several Stangs fly with out the doors and NO WHISTLING .... BobH.

(in reply to Lorduss)
       Post #: 78

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/9/2003 3:45:36 PM   
splais


 

Posts: 2711
Joined: 12/12/2001
From: Yuma, AZ, USA
Status: offline 		I forgot to ask the other day. I have a black fiberglass rod about 1/4" x 3' long in the kit that I can't seem to figure out what it is for. Anyone know what I missed.


Lets talk some programming setup. If I have it right, this is what I will need to do. The retracts are on a servo. Tailwheel steering is on a servo. the choke is on a servo. The flaps are on a servo. I'll never remember what all these switches do. No wonder warbirds crash.

Anyway, Item 1: I think I have to program link the tailwheel steering to the rudder, but on a switch because you do not want the retracted tailwheel turning when you use the rudder in flight. Item 2: The choke is on a servo so it can also be utilized as an inflight kill switch(Don't want to hit that one by mistake). Item 3: The retracts and flaps are straight forward, switch activated.

Could someone that has used retracts comment on this: It seems it will be really cool to have the retracts go up nice and slow for visual effect on takeoff. Does this bleed extra air and decrease your available cycles. I cannot see needing more than two cycles per flight anyway.

< Message edited by splais -- 10/9/2003 9:08:40 AM >

(in reply to MANFRED)
       Post #: 79

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/9/2003 4:04:48 PM   
pettit



Posts: 2112
Joined: 12/19/2001
From: Durham, NC, USA
Status: offline 		I have the kit ... oops ...ARF, almost ready to go, once the retracts arrive. These things must be popular! I may put the fixed gear blocks in for the time being to run the engine and check weight and balance.

I can't remember seeing what the use of the long fiberglass rod was, but the instruction manual is at home.

Someone asked about the spinner. It's not as nice as a "Brand T-T", but it is in the box. It's cut for a rather large prop size, meaning it'll probably fit any prop you want to use, except 4 blade ones. I'll be painting mine black and white.

When the tailwheel is retracted, it takes the tension off the pull-pull cables used to control it. When I did the TF P-51 in true kit form, I put a small coil spring in each of the pull-pull legs, right at the servo. This will take a lot of strain off the servo on less-than-perfect landings.

I'm using a US41, since #1, it's a bolt in installation, #2, it has enough (barely) power and #3, I had one! It fits within the cowl, except for carb venturi out the side and the top of the cylinder head out the bottom. Not the head itself, just the little protrusion on the top of the head. The cowl is cut for the head and muffler exit, but you have to do some carving to get the carb through the side. Even the checkerboards match up quite closely.

I'll send photos when I can shrink them down from Hi-res digitals.

< Message edited by pettit -- 10/9/2003 11:05:46 AM >

_____________________________

Dick Pettit
Associate Editor, R/C REPORT Magazine
"You Can Buy Better,
But You Can't Pay More"

(in reply to splais)
       Post #: 80

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/9/2003 4:52:42 PM   
TLH101



Posts: 5441
Joined: 12/27/2001
From: Corpus Christi, TX, USA
Status: offline 		Dick,
the system will take much larger pics now than before, so you may be able to post the ones you already have. Just hit the upload button and you can put up 4 pics per post.

_____________________________

Terry
"Old Fart" in training. (not to be an R/Cer, but to be an "Old Fart")

(in reply to splais)
       Post #: 81

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/9/2003 6:14:09 PM   
BobH


 

Posts: 4314
Joined: 4/1/2003
From: Springfield, VA,
Status: offline 		Steve, your tail wheel can indeed turn with the rudder. If you are using a separate servo make your ATV less for the tail wheel steering that the rudder ATV is. You don'n need much movement from the tail wheel to be effective. I don't know what type of radio you are using but both my 8 UAF and my 9 zwcii have a kill command for the engine. I assign it to a spring loaded switch (left side, top).
As for your retract speed. Using a slow up will not decrease your number of cycles. I have slow up and close to normal speed down. . BobH.

(in reply to TLH101)
       Post #: 82

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/10/2003 3:42:10 AM   
splais


 

Posts: 2711
Joined: 12/12/2001
From: Yuma, AZ, USA
Status: offline 		I use a 9C

Does anyone know what that black fiberglass rod is for. I can find nothing in the instrcutions that mention it and can find nothing that requires it.

A couple more pics of the preliminary setup of the fuselage interior.

On the fuel tank. I extended the small wooden support blocks on the side about a quarter inch so that the tank pivots on them. After I insert the tank at an angle and pivot it flat, the wedge stick (long stick at back of tank) holds it in beautifully. For actual flight a small block will be CA'd in to hold the wedge stick from coming loose. All fits together nicely.

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< Message edited by splais -- 10/10/2003 10:45:51 PM >

(in reply to MANFRED)
       Post #: 83

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/10/2003 12:20:09 PM   
pettit



Posts: 2112
Joined: 12/19/2001
From: Durham, NC, USA
Status: offline 		Here's a few photos of the Top Flite ARF P-51 with a US41 engine.

(BTW, you folks using a lighter and more powerful engine, You got it made!. I checked the balance and I'll need several ounces of tail weight to balance with the US41.)

Total weight as you see in photos is 18 lbs 5 oz. The fixed gear stuff is in place only because Robart has back ordered the retracts. All I need to add is the cowl, canopy and a pilot head. Maybe 19 pounds, maybe a few ounces more. That'll be just fine.

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< Message edited by pettit -- 10/10/2003 8:23:37 AM >

_____________________________

Dick Pettit
Associate Editor, R/C REPORT Magazine
"You Can Buy Better,
But You Can't Pay More"

(in reply to splais)
       Post #: 84

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/10/2003 7:03:12 PM   
Modelman



Posts: 383
Joined: 12/14/2001
From: USA, USA
Status: offline 		Steve, Dick...

Are you certain there is a "fiberglass" rod included in your kit? Or... is it a very stiff (black) Outer Pushrod Tube? Please verify.

The very first shipment of kits included an incorrect Outer Pushrod Tube (the black one). We corrected the mistake by inserting the correct (Grey) Outer Pushrod tube - leaving the black one in the kit.

Craig

(in reply to pettit)
       Post #: 85

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/10/2003 10:35:14 PM   
splais


 

Posts: 2711
Joined: 12/12/2001
From: Yuma, AZ, USA
Status: offline 		It is a very stiff (black) Outer Pushrod Tube.

So did I not get something I needed or was this extra. I'm all done with the internal fuselage stuff and nothing is missing that I can tell.

(in reply to splais)
       Post #: 86

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/11/2003 3:11:24 AM   
gary9648


 

Posts: 1165
Joined: 10/22/2002
From: Troy, OH, USA
Status: offline 		Do not put weak servos on the FLAPS. The flaps should have at least 100oz. servos to hold those big barn doors down into the slipstream. Lower rates will cause your battery to be drained from the current drain from stalled servos. These are the largest control surfaces on the plane. I now have two of these Mustangs to complete and are waiting on gear also. Bothe planes will have a G-62 with CH ignition in them. Should go like H---. Also they will be fitted with the Aerotech wheels. They are real neat. I hope I get to fly one before the snow flies.
I can't wait to hear who gets theirs in the air first. I installed the tail gear doors and they work as advertised. This is a real neat and simple way to control those doors.

(in reply to splais)
       Post #: 87

RE: TF 1/5 Scale P-51 ARF Assembly Thread - 10/11/2003 5:29:47 AM   
splais


 

Posts: 2711
Joined: 12/12/2001
From: Yuma, AZ, USA
Status: offline 		Gary, you must have way more skill than I because mine do not work for s===. Not sure what I am going to do about them. Right now they will not close without help.

Well, my Sierra Precision gear arrived today so I am ready to go. I now have all my parts. The initial impression of the SPC gear is that they are beautiful. Preliminary install indicates that they will fit just fine.

I started applying the decals today. Used windex instead of soapy water. Worked perfectly. Not a bubble in site. Here are a few more pics.

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< Message edited by splais -- 10/11/2003 5:32:13 AM >

(in reply to MANFRED)
       Post #: 88