RE: Zeroli P51 Build  
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All Forums >> RC Airplanes >> RC Warbirds and Warplanes >> RE: Zeroli P51 Build
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RE: Zeroli P51 Build - 11/7/2006 6:03:28 PM   
Hello82


 

Posts: 121
Joined: 8/20/2006
From: Boston, MA, USA
Status: offline 		Hey Skyflying

- great thanks, that helps a lot... but when you say:

"A single carbon pushrod will do all the work in this setup". ... you mean for the elevator right? cause a rudder pull pull system is 2 cables...or are you running one short horn for a regular rudder setup that looks like a pull pull from this angle I see? Can't make it out if there is a horn on both sides or not.

M

(in reply to Skyflying1)
       Post #: 151

RE: Zeroli P51 Build - 11/7/2006 7:57:42 PM   
Skyflying1



Posts: 318
Joined: 2/27/2002
From: San Antonio, TX, USA
Status: offline 		One rod to push and pull. I thought of the cable thing, it just didn't seem like the set up would have the right leverage to me. I have one push rod for the rudder / one for the elevator.

(in reply to Hello82)
       Post #: 152

RE: Zeroli P51 Build - 11/14/2006 4:57:33 AM   
Hello82


 

Posts: 121
Joined: 8/20/2006
From: Boston, MA, USA
Status: offline 		Hey Skyflying and friends

I was looking at different types of push rods at tower etc...are your carbon rods the type that slide in a tube, or the arrow shaft type that just hang. If they do hang, do you need to put any support anywhere inside the fuse?

I bought some semi flexible Sullivan composite carbon 3/16 shafts with outer tube guides which seem pretty good, but they're not the 100" never bend arrow shaft carbon fiber type. I think these are good enough for this giant size plane?

But the retract tail wheel needs to be pull pull because you need loose wires when it retracts I presume...so would kevlar work or does it have to to be steel wiring?

Did you use 3/16" wire to do your elevator function connection? I bought some 1/8" by accident and think I probably should not use it just in case, seems pretty strong though. Trying to figure out the best linkage situation for this too...probably will need to build a hatch for access there.

M

(in reply to Skyflying1)
       Post #: 153

RE: Zeroli P51 Build - 11/14/2006 6:17:16 AM   
Capt G



Posts: 821
Joined: 1/27/2002
From: NV
Status: offline 		Not going to use pushrods. In an earlier post you'll see that I built the elevator servos into the stab - got rid of the joiner that way too. The rudder servo will go in a hatch under the stab. When I used pushrods before I supported them at least halfway in the fuse to take the strain off. I like kevlar or coated wires for the tailwheels.

(in reply to Hello82)
       Post #: 154

RE: Zeroli P51 Build - 11/17/2006 2:09:24 AM   
Hello82


 

Posts: 121
Joined: 8/20/2006
From: Boston, MA, USA
Status: offline 		Hey Capt G

Yeah I chickened out on the servo in the stab idea like you did...but I started doing the inside hidden elevator rods, kevlar steering on the tail retracts, but rudder is still in the air....leaning toward a pull pull just for fun, but also like skyflyings one push rod method using the fairly hidden horn.

What are the real advantages of a pull pull anyway? Is that mainly a 3D advantage thing for flying with such large reflections and aerobatics?

Here's where I'm at with the pictures. 50 oz tank just fits...what are you guys using? Below the fuse in the first picture you can see the carbon inserts in the TE's -thanks Viper!

Matt



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< Message edited by Hello82 -- 11/17/2006 2:11:29 AM >

(in reply to Capt G)
       Post #: 155

RE: Zeroli P51 Build - 11/17/2006 9:19:40 AM   
viper1



Posts: 259
Joined: 1/31/2002
From: Melbourne, AUSTRALIA
Status: offline 		You're Welcome bud

< Message edited by viper1 -- 11/17/2006 9:20:46 AM >

_____________________________

P-51 Homepage;
http://people.aapt.net.au/gjmustang/

(in reply to Hello82)
       Post #: 156

RE: Zeroli P51 Build - 11/28/2006 4:19:02 AM   
Hello82


 

Posts: 121
Joined: 8/20/2006
From: Boston, MA, USA
Status: offline 		Hey there Skyflying

What kind of muffler is that you have on the Brison? Do you have to run it also inconjuction with the scale exhauts?

...and did you find the Sierra retracts really required thinning out the ribs...I'm doing some serious digging into the ribs with my Sierras!


Any idea where Arthur K is? Love to see how his Z-bird turned out.

best,
Matt

(in reply to viper1)
       Post #: 157

RE: Zeroli P51 Build - 11/28/2006 2:33:52 PM   
Skyflying1



Posts: 318
Joined: 2/27/2002
From: San Antonio, TX, USA
Status: offline 		Hey Matt,

The muffler is custom made from a the owner of J'tec. Really nice guy to speak with I just forgot his name. Anyway if you call him up
he can build you one as well. "Do you have to run it also inconjuction with the scale exhauts?" The only way to hook up the system is from
a muffler with plumbing to connect the scale pipes. "did you find the Sierra retracts really required thinning out the ribs" Yup, thats why I added the carbon sheet to the ribs that hold the landing gear. I'd love to see Arthurs stang! I have no idea if it's finished or not. Post
pictures if your out there Arthur!



(in reply to Hello82)
       Post #: 158

RE: Zeroli P51 Build - 11/29/2006 4:06:20 PM   
Hello82


 

Posts: 121
Joined: 8/20/2006
From: Boston, MA, USA
Status: offline 		Hey

I'll give J'tec a call. Hey where did you get JZ 4 blade prop @ 24" ? No luck on line in my search. Have you used 4 blades before...any tips..I'm a newbie?

What size 2 blades have you used on the Brison 5.8 and for what type of bird?

It's coming together

thanks
Matt

(in reply to Skyflying1)
       Post #: 159

RE: Zeroli P51 Build - 11/29/2006 9:56:41 PM   
Skyflying1



Posts: 318
Joined: 2/27/2002
From: San Antonio, TX, USA
Status: offline 		Matt,

Zinger can be reached here: http://www.zingerpropeller.com/4_bladed_propeller.htm
If I have to use a standard prop it would be something like a 28X8 or 10.

(in reply to Hello82)
       Post #: 160

RE: Zeroli P51 Build - 11/30/2006 2:28:22 AM   
Hello82


 

Posts: 121
Joined: 8/20/2006
From: Boston, MA, USA
Status: offline 		ahhh it's Zinger...I was searching JZ- thanks! Is your spinner from there too and custom cut for the 4 blade like I see on their site?

How's your bird doing..where you at now on it?

M

(in reply to Skyflying1)
       Post #: 161

RE: Zeroli P51 Build - 12/8/2006 1:51:03 AM   
Hello82


 

Posts: 121
Joined: 8/20/2006
From: Boston, MA, USA
Status: offline 		Hey Wade

I just printed out those pics of your Sierra retract install because I have the same. I installed(not glued yet) a landing gear plate which runs 100% parallel to both the leading edge and 1/4" wing braces in the center (kind of like on the plan), which makes the retracts and struts sit 100% parallel also. First I thought that was a good thing...now I'm wondering maybe not?

Do you need the struts and retract to run downward at an angle towards the center of the wing so the strut pant fairings sit flush to the skin of the wing? I never done these types of retracts before and since it's a modification to the planned Robart retracts...maybe I'm missing something here? If so, what is that angle....it seems maybe the retract mount needs to 1/8-1/4 higher on the outer sides closer to the wing tip?
.
Any help or pictures would appreciated becaue it's one of those situations where you can't really turn back.


thanks
Matt

(in reply to Hello82)
       Post #: 162

RE: Zeroli P51 Build - 12/8/2006 2:10:48 AM   
Skyflying1



Posts: 318
Joined: 2/27/2002
From: San Antonio, TX, USA
Status: offline 		Hey Matt,

I just have one picture and its not the best I'll admit however it shows the gear in the wing. I used the plans to get the general
spacing correct and from then on I just used my imagination. I did try to get the gear as close to the leading edge as possible with
the thought of keeping the tire in the highest point of the ribs. What you want to look out for is the angle in which the gear is laying
in the wing. Your gear has to sit at an angle, (tire lower) in order for the tire to tuck deep enough in the wing to be hidden. Likewise
you need to insure you have the correct gear plate angle when the gear is extended. You want your legs straight, not toed in or out.
I hope this is all making some sense to you. So angle that gear plate so the end towards the tire is down lower then the top portion.



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(in reply to Hello82)
       Post #: 163

RE: Zeroli P51 Build - 12/8/2006 5:36:57 AM   
viper1



Posts: 259
Joined: 1/31/2002
From: Melbourne, AUSTRALIA
Status: offline
quote:

ORIGINAL: Skyflying1

So angle that gear plate so the end towards the tire is down lower then the top portion.




I assume that's the other way around? , Or you are talking about viewing the wing from the bottom i.e. the wing inverted ?


_____________________________

P-51 Homepage;
http://people.aapt.net.au/gjmustang/

(in reply to Skyflying1)
       Post #: 164

RE: Zeroli P51 Build - 12/8/2006 2:49:13 PM