RE: Ziroli DC-3  
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All Forums >> RC Airplanes >> Twin & Multi Engine RC Aircraft >> RE: Ziroli DC-3
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RE: Ziroli DC-3 - 10/9/2003 8:27:11 PM   
Kregg



Posts: 470
Joined: 2/8/2002
From: Hebron, KY, USA
Status: offline 		I'm also working on a Ziroli DC-3. Mine is all framed up and starting on the sheeting. Man! That is a lot of sheeting. I spent $150 bucks just on balsa for the sheeting alone. Mine will have a pair or Zenoah G45 that I already have broken in from other projects. I will post some pixs soon. We all need to keep this thread going and compare notes along the way.

What about push rods that are 4 feet long for the tail surfaces? That will be a real trick to keep the slop out.

FYI: In a earlier post someone asked about scale pilots and another replied that they should be 1/6th scale. That is not correct according to my Ziroli plans. 140" span, 99" fuse = 1/8th scale. Unless he scaled it up even more!

(in reply to SteveD-RCU)
       Post #: 26

RE: Ziroli DC-3 - 10/9/2003 11:26:26 PM   
SteveD-RCU



Posts: 644
Joined: 1/21/2002
From: Sault Ste Marie, ON, CANADA
Status: offline 		Hi Kregg ;Thanks for the clairification on the scale numbers.I'm going to use Sul518 High Stress Golden Rods that are 60" long.I'm going to run them through the formers on each side .Pushing these rods will be a set of HS 700 Hitech 1/4 scale servos.Pics in a few days...Steve..

(in reply to SteveD-RCU)
       Post #: 27

RE: Ziroli DC-3 - 10/9/2003 11:37:56 PM   
cmsrp



Posts: 203
Joined: 6/3/2002
From: StrathdaleVictoria, AUSTRALIA
Status: offline
quote:

Lookin good cmsrp ;Do you have constuction of the DC-3 on hold?.


Yep, dont know if I'm going to complete this bird or sell it??? I have so much to do and so little time at the moment. Would be good to see it fly though...

quote:

What about push rods that are 4 feet long for the tail surfaces? That will be a real trick to keep the slop out.


I wondered this myself; Anyone thought of putting the servo's down the back?????

(in reply to SteveD-RCU)
       Post #: 28

RE: Ziroli DC-3 - 10/10/2003 12:52:50 AM   
jimcork1



Posts: 915
Joined: 1/29/2002
From: Slidell, LA, USA
Status: offline 		Great work I just completed the C130 (see post) and have been flying. I am considering the C47, B17 and B29 for next projects. Please keep informing of progress including flying and pics.

Any suggestions for the next one.. More engines more fun..

Bigger Boat Bigger Fish.. OOPS wrong board..

(in reply to SteveD-RCU)
       Post #: 29

RE: Ziroli DC-3 - 10/10/2003 2:15:00 AM   
SteveD-RCU



Posts: 644
Joined: 1/21/2002
From: Sault Ste Marie, ON, CANADA
Status: offline 		I considered installing the servos in the rear but decided against it because of the tail weight.

(in reply to SteveD-RCU)
       Post #: 30

RE: Ziroli DC-3 - 10/10/2003 3:38:14 AM   
cmsrp



Posts: 203
Joined: 6/3/2002
From: StrathdaleVictoria, AUSTRALIA
Status: offline
quote:

I considered installing the servos in the rear but decided against it because of the tail weight


That was my concern, but being that I dont know anyone else here in Aus with a Zirolli DC-3, I didnt know how these planes finish up (balance and weight)...
Are they commonly tail heavy?

(in reply to SteveD-RCU)
       Post #: 31

RE: Ziroli DC-3 - 10/10/2003 1:22:26 PM   
SteveD-RCU



Posts: 644
Joined: 1/21/2002
From: Sault Ste Marie, ON, CANADA
Status: offline 		Thats why they use G-38"s,US 41's ,Q-42's, cmsrp.for the extra weight and then some so Ive heard.Maybe somebody out there has experienced that problem and has some numbers.

< Message edited by SteveD-RCU -- 10/10/2003 1:23:07 PM >

(in reply to cmsrp)
       Post #: 32

RE: Ziroli DC-3 - 10/10/2003 1:58:28 PM   
Kregg



Posts: 470
Joined: 2/8/2002
From: Hebron, KY, USA
Status: offline 		I agree about the tail weight issue. I'm sure it will be substantially tail heavy. I've heard of these ships requiring SEVERAL pounds of nose cone weight. I hope we find someone with live experience with this aircraft. That would be very helpful. I was going to make my fiberglass nose cone removable, for access to the nose weights. This would also be a good spot for the batteries, receiver and such, helping the balance issue.

What does everyone think about cutting the fuse formers for the windows along the side? Will this affect the structural integrity after it has been sheeted and glassed? I'm debating about cutting the holes for a true window (seeing inside) or just creating a shallow shadow box style window well that sits back about a 1/2 inch from the window. I'm leaning toward the shadow box style since I do not plan on finishing the interior of the fuse. The boxes could be painted a dark gray and it would create the illusion while not cutting completely through a few of the formers.

(in reply to cmsrp)
       Post #: 33

RE: Ziroli DC-3 - 10/11/2003 2:03:02 AM   
SteveD-RCU



Posts: 644
Joined: 1/21/2002
From: Sault Ste Marie, ON, CANADA
Status: offline 		I like the recessed box around the window idea Kregg.I too am not going to finish the rear interior.I will do the cockpit area though.Has anyone considered the new Saito 200 twin cylinder for power?I think they may have enough power and at 160 mm(6 1/4" I believe they may fit ok.They'll turn up to 18x10 props around 8000 I think.I recall reading an article by Greg Hahn were he said G-23's would be enough power for the Ziroli DC3 , so maybe these 200 twins would be a possibility?What do ya all think?..Steve

(in reply to SteveD-RCU)
       Post #: 34

RE: Ziroli DC-3 - 10/12/2003 6:12:24 AM   
SteveD-RCU



Posts: 644
Joined: 1/21/2002
From: Sault Ste Marie, ON, CANADA
Status: offline 		Just installed the pushrods for the elevators

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       Post #: 35

RE: Ziroli DC-3 - 10/16/2003 1:25:45 PM   
Kregg



Posts: 470
Joined: 2/8/2002
From: Hebron, KY, USA
Status: offline 		Steve,
Yours is looking good. I just ordered the 60!QUOT! Sullivan push-rods as well. My fuse is in the same stage as yours except that I'm just building the rear control surfaces. Perhaps you could share your thoughts on the tail control surface connections. This is my first aircraft with the scale hinge line made from steel rods.

Is the rudder and elevator removable after the fuse is sheeted? The control rod and horn connection onto the hinge rod will be inaccessible once I plank the fuse. That must make these connections permanent and they must be done right the first time. This is a confusing area. Will you finish these control surfaces including the covering before you attach these to the stabilizers? The control arm with a wheel collar on the steel rod does not seam very reliable. I will file a flat spot and maybe even solder the wheel collar onto the rod, but there will be a lot of stress on this little connection. Seems week. Perhaps you could post some detailed pix of this area as you do it? It would be most appreciated.

If it helps you, I could take pixs of the wing sections and the fuse connections. I have these areas built and attached, but not sheeted.
Thx,
Kregg

(in reply to SteveD-RCU)
       Post #: 36

RE: Ziroli DC-3 - 10/16/2003 6:38:05 PM   
SteveD-RCU



Posts: 644
Joined: 1/21/2002
From: Sault Ste Marie, ON, CANADA
Status: offline 		Hi Kregg;I was planning to make my control surfaces semi-permanent on the tail.If one were to silver solder a control horn onto the rudder hinge rod and then make a slot on the fuse under the rudder could make it removeable along with makeing it installable after sheeting the fuse and covering the rudder.You would also have to make an access hole through F-14 to hook up the rudder pushrod.One could make a removeable tailcone also,or just install it when everything else is completed.The thing is you have to glass the fuse with the stabilizer and fin attached .That would be the way I'm thinking on going.I will finish sheeting and covering and then glass it before I attach any of the control surfaces permentaly.Plus I like to paint everthing seperate also. I still have to add the rudder push rod on mine yet.
Some pics of your wing sections and fuse connections would be great Kregg.Thats what I'm working on at the moment..
As soon as I get back at the tail section I'll post some pics...Steve

(in reply to SteveD-RCU)
       Post #: 37

RE: Ziroli DC-3 - 10/17/2003 5:11:09 AM   
SteveD-RCU



Posts: 644
Joined: 1/21/2002
From: Sault Ste Marie, ON, CANADA
Status: offline 		Just sizing up a Saito 170R on the firewall were the US 41's are going.Looks like one could consider using these engines.They'd have the power I would think.This particular engine flew a 20 lb SR 9 with ease....Steve

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       Post #: 38

RE: Ziroli DC-3 - 10/17/2003 2:13:52 PM   
Kregg



Posts: 470
Joined: 2/8/2002
From: Hebron, KY, USA
Status: offline 		Steve,
Below you will find a few pix of my assembly with the wing and such. If you want details on a certain area, just let me know.
Kregg

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       Post #: 39

RE: Ziroli DC-3 - 10/17/2003 7:42:14 PM