RE: World Models .60 size P-51 Mustang--Petie 2nd version

RE: World Models .60 size P-51 Mustang--Petie 2nd version
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RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/2/2004 7:32:10 PM

mnmills2

Posts: 160
Joined: 1/31/2003
From: florida
Status: offline

I didnt get a chance to hit the flaps. I was about 30 feet on the upwind side at 3/4 throttle. I had just pulled the gear up as things were starting to go well. I was just really relieved when it came back down and worked as advertised. These are my first mechanical retracts Ive owned.

I didnt have to add any weight to balance it... it was perfect. I hit the gas on takeoff and the tail came up quick so pulled back on the elevator. The controls were so sensitive, it almost went vertical from there. Then I pushed forward to get some speed, and it did a nose dive down to a foot off the ground. I pulled back again and climbed away and shifted to low rates and everything was perfect. I highly recommend 50% of the recommended throws.

I took the advice and coated the retract wells with epoxy. I actually used a mixture of 30 minute epoxy and denatured alcohol to thin it down. With a thinner mixture I was able to get it to wick into a few corners. Mine didnt break off on the maiden voyage!

One thing I did was I screwed up my cowl in the building process. I mounted the engine mounts upside down. Its sounds weird...but the mounts are a little different than anything I had seen. THis caused my motor to be mounted 3/4" off center with out me realizing it. THen I cut the dummy cowl to fit and traced it on my final cowl and started hacking away. It still doesnt look too bad, the hole is just a little large. I called airborne models and they have already shipped me a new cowl. I had good luck with them.

Im using the 91FX in mine. Ive never used a fuel pump before. I ended up with only a 14oz (414cc) tank. Is this too small? I may have just been out of gas. I quickly refueled and didnt end up flying again so Im not sure if the tank was completely empty. The manual says that is sufficient, but I was running it pretty rich and I only got about 5 minutes out of it. I just read the post above saying 24oz and I started to wonder.

(in reply to viper21)

Post #: 51

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/2/2004 8:39:48 PM

Richard L.

Posts: 8775
Joined: 7/28/2002
From: Redmond, WA, USA
Status: offline

quote:

ORIGINAL: mnmills

I ended up with only a 14oz (414cc) tank. Is this too small? I may have just been out of gas. I quickly refueled and didnt end up flying again so Im not sure if the tank was completely empty. The manual says that is sufficient, but I was running it pretty rich and I only got about 5 minutes out of it. I just read the post above saying 24oz and I started to wonder.

I think a 24 oz tank is overkill for this small plane. A 14 oz tank should be sufficient for the 91FX. I'm using a 14 oz tank with my YS 110, and I'm getting a full 12 minutes of flight at full throttle.

(in reply to mnmills2)

Post #: 52

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/6/2004 12:11:52 AM

viper21

Posts: 912
Joined: 3/13/2002
From: Orange, CA, USA
Status: offline

Well my Mustang was shipped today along with a Slimline inverted pitts muffler for my new OS 91 Surpass II

I should have the plane in 5 days or less its coming from Quantum Models. I need to clean up my bench so I can start work on the Mustang it should fly well with the new Surpass 91 II and Graupner 14x6 to start. I
Viper

< Message edited by viper21 -- 8/8/2004 12:44:07 PM >

(in reply to Richard L.)

Post #: 53

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/8/2004 1:30:29 AM

BadBart

Posts: 187
Joined: 5/21/2003
From: Orlando, FL, USA
Status: offline

Have those running a .91 4c in this plane found it to be enough power? Closer to scale I'd bet. Reason I'm asking is that I'm thinking of putting a Saito .91 in her.
Pat

(in reply to viper21)

Post #: 54

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/8/2004 8:31:33 PM

mnmills2

Posts: 160
Joined: 1/31/2003
From: florida
Status: offline

Well...I have the 91FX in mine. It flies well on that, but if you put in the recommended 61, it would be VERY marginal. I would go to say that a 91 4C would be too small, at least if you want a plane with any power.

Mike

(in reply to BadBart)

Post #: 55

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/8/2004 8:42:28 PM

viper21

Posts: 912
Joined: 3/13/2002
From: Orange, CA, USA
Status: offline

Well, I am going to run a new Pumped OS 91 Surpass II and a Slimline inverted pitts muffler and I am not worried about having enough power. I am also installing Robart pneumatic retracts and Robo Struts and I am not worried. I dont want a 3D Mustang so I will be happy I believe.
Viper

(in reply to mnmills2)

Post #: 56

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/8/2004 9:17:17 PM

serge760

Posts: 412
Joined: 5/16/2004
From: rancho mirage, CA, USA
Status: offline

how do you check the CG on your p51, from the wing tips, or as close to the fuselage?????

(in reply to taildraggerdave)

Post #: 57

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/8/2004 10:59:09 PM

taildraggerdave

Posts: 956
Joined: 8/30/2002
From: Sun Valley, CA, USA
Status: offline

They want you to check it on the wing at the fuselage. Measured back from the leading edge of the wing with the fuel tank empty.

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(in reply to serge760)

Post #: 58

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/8/2004 11:18:14 PM

viper21

Posts: 912
Joined: 3/13/2002
From: Orange, CA, USA
Status: offline

Dave or anyone, can you guys tell me what size wheels the plane uses because I need to know the size so I can order my Robart retracts and
Robo Struts. I will have my plane and inverted pitts muffler will be here on Wednesday. So I am making room on my bench to make room for my Mustang so I can start work on it,
Viper

(in reply to taildraggerdave)

Post #: 59

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/11/2004 4:51:34 AM

stangevil29

Posts: 146
Joined: 9/30/2003
From: Tucson, AZ, USA
Status: offline

Viper 21 or anyone,
I was curious as to where I might be able to get a look at a set of the CJM retracts that you have been talking about? I went to their web site and could not find anything on them. Are they made for the petie 2nd? I have never had a set of air retracts and it would be shame if I was to chew my Fathers Day present up by leaving the stocks in it. Are they had to install? Any help would be appreciated. Thanks.
Crazyponie

(in reply to viper21)

Post #: 60

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/11/2004 5:21:36 AM

viper21

Posts: 912
Joined: 3/13/2002
From: Orange, CA, USA
Status: offline

Crazyponie, I am installing Robart air retracts the ones I am using are 551RS and they are bored to fit the Robo Struts for the 3 inch wheels the plane needs. You can see the retracts and accesories for Robart and Spring Air at these sites. http://www.robart.com/ http://www.retracts.com/
For the Spring Airs you need the 704 retracts they are bored for Robart Robo Struts also. If you just want to use the stock wire struts they have the retracts with 3/16 wire I am installing the Robo Struts because the help in take off and mostly landing and look very scale. If you need more info about the Robarts PM ort Email me and I can give you all the Robart part #'s
Viper

PS: How do you like the plane and which engine are you installing? I am having mine delivered tomorrow.

< Message edited by viper21 -- 8/10/2004 9:24:27 PM >

(in reply to stangevil29)

Post #: 61

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/11/2004 8:02:16 AM

Tony Flores

Posts: 8
Joined: 4/11/2003
From: Coarsegold, CA, USA
Status: offline

Are you guys using the vibration isolation motor mount that came with the kit? I'm thinking about modifying the mount to remove the rubber mountings and make it solid.
Any opinions?

(in reply to viper21)

Post #: 62

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/11/2004 1:43:45 PM

taildraggerdave

Posts: 956
Joined: 8/30/2002
From: Sun Valley, CA, USA
Status: offline

That's what I did. Used the black plastic mount only and drilled and tapped holes to mount the engine, followed by lock nuts on the other side.

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2006 NATC Sportsman 5th Scale Champion

(in reply to Tony Flores)

Post #: 63

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/11/2004 2:19:17 PM

mnmills2

Posts: 160
Joined: 1/31/2003
From: florida
Status: offline

I used the included motor mount with the vibration dampners. It is a little of a pain to put together, but it works great.

Mike

(in reply to taildraggerdave)

Post #: 64

RE: World Models .60 size P-51 Mustang--Petie 2nd version - 8/11/2004 9:00:47 PM

viper21

Posts: 912
Joined: 3/13/2002
From: Orange, CA, USA
Status: offline

Mike, I was planning to use the Vibration mount for my 91 Surpass are you using a four stroke or two? I ask because I wanted to make sure the mount will hold up to the Pumped OS 91 Surpass III?
Thanks Joe

(in reply to mnmills2)

Post #: 65