RE: WORLD MODELS 80in. ZERO

RE: WORLD MODELS 80in. ZERO
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RE: WORLD MODELS 80in. ZERO - 9/9/2005 1:06:50 PM

Ragz

Posts: 1687
Joined: 12/6/2001
From: Nagpur, INDIA
Status: offline

Hi,
I am using two elevator servos... 1 per half. Is that also not enough? Right now I have 2 Futaba s148's installed there. My current config is as follows:

Ail: 148 x 2
Ele: 148 x 2 (96 oz. together at 4.8v)
Thr: 148 x 1
Rud: 9202 x 1
Flp: 9202 x 2
Ret: hitec 755 x 2

Any suggestions? Should I still go with larger servos? I can always use a 6v pack.

Anurag

quote:

ORIGINAL: carlbecker

The faster the plane flies the more stress on surfaces will be. I don't have that much experience with these larger birds but I would not go with less than 75 inch ounce. The elevator being larger I would increase this one. I plan to use a 93 inch ounce on the elevator of my Zero and it will not be a speed demon. Throttle and air can be standard.

Carl

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Anurag

(in reply to carlbecker)

Post #: 151

RE: WORLD MODELS 80in. ZERO - 9/9/2005 1:44:37 PM

carlbecker

Posts: 1636
Joined: 7/29/2002
From: Fairfax, VA, USA
Status: offline

I'm not an expert but if it where mine I would use stronger faster aileron servos. If you are going to fly the plane fast you do not want flutter. I have seen flutter tear a wing in half on a big Mustang at WOD this year (Its a credit to the pilot that he landed it in one piece with broken wing and no ailerons). Personally I have been using 5 cell packs at 1100 or 1700ma for serveral years with no regulator. Higher capacity batteries may not last as long but I check mine regularly. I have no problem replacing a $25 pack after a few years and I keep spares. I don't like to take chances when the plane is in the air and like the extra margin. Note that 5 cell packs drain quicker while adding extra speed and/or power depending on the servo. I use Hitec servos and don't know the rating of your Futaba's off hand.

I will stress a sport plane but if its scale then I try to fly in a scale manner and not do 3D stuff or race it. I try to use reasonable power in my models.

Carl

(in reply to Ragz)

Post #: 152

RE: WORLD MODELS 80in. ZERO - 9/9/2005 3:45:11 PM

ultraeast

Posts: 25
Joined: 1/3/2005
From: , GA, USA
Status: offline

Anurag,

Carl is correct in everything that he is saying. The larger the engine(HP0) the more stress on the surfaces for smaller torque servos. I am using on the rudder of my zero one Hitech 6045=107oz, Elev one 4131 JR=90oz, throttle one JR517=66 oz with a Mokie 1.80. I have gotten six flights with it, and it flies great with no flutter. I love 4131 servos because they are dependable. Do not go under 90 oz. By the way, what engine are you using???

Jerry

(in reply to carlbecker)

Post #: 153

RE: WORLD MODELS 80in. ZERO - 9/9/2005 8:30:34 PM

Ragz

Posts: 1687
Joined: 12/6/2001
From: Nagpur, INDIA
Status: offline

Jerry,
I am using the ZDZ 40. you are using 1 4131 on both the elevator halves? I am using 1 standard on each half..making it 2 on the elevator halves. This makes approx 84oz. But I get the point. I will replace them with bigger better servos. Thanks....

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Anurag

(in reply to ultraeast)

Post #: 154

RE: WORLD MODELS 80in. ZERO - 9/9/2005 11:44:22 PM

Capt G

Posts: 827
Joined: 1/27/2002
From: NV
Status: offline

I'm using 4131 on the elevator (pull-pull) and 4721 on teh rudder (pull-pull), 2721s on the ailerons and flaps. Plane will knife edge no problem! Power is Moki 1.80 and it took an extra 6oz up front to balance.

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(in reply to Ragz)

Post #: 155

RE: WORLD MODELS 80in. ZERO - 9/10/2005 1:13:56 AM

ultraeast

Posts: 25
Joined: 1/3/2005
From: , GA, USA
Status: offline

Capt G,

The Zero really looks good. Glad to hear you are also using the Mokie 1.80. What can of motor mount did you use?? It looks like you did not use the standard landing gear that came with the kit. Which brand landing gear are you using?

thanks,
Jerry

(in reply to Capt G)

Post #: 156

RE: WORLD MODELS 80in. ZERO - 9/12/2005 5:56:04 AM

rckymtn1

Posts: 27
Joined: 9/2/2003
From: Westminster, CO, USA
Status: offline

Jerry, I saw from your earlier posts, that you had problems with the install of the G-38. Did others have similar problems with that install or what specific mods were required? any photos of G-38 or us 41 install as well.

were similar problems encounted with the us41 install?

Pettit, your issue of the review is believe is sold out. Do you have any photos / specific mods of your g-38 install. Would like to consider a gasser, but seems some ran into problems with the g-38 being too long?

thanks.

(in reply to ultraeast)

Post #: 157

RE: WORLD MODELS 80in. ZERO - 9/12/2005 6:57:54 AM

Ragz

Posts: 1687
Joined: 12/6/2001
From: Nagpur, INDIA
Status: offline

OK, this is what I am putting:

Ailerons: Futaba 9202 x 2
Elevator: Futaba 9202 x 2
Throttle: S148 x 1
Rudder: JR8411 x 1 (pull pull)
Flap: JR 579 x 2 (8kg servo)
Retracts: Hitec 755 x 2

I hope this should be able to do justice to the plane?

_____________________________

Anurag

(in reply to rckymtn1)

Post #: 158

RE: WORLD MODELS 80in. ZERO - 9/12/2005 2:04:36 PM

Capt G

Posts: 827
Joined: 1/27/2002
From: NV
Status: offline

Retracts are Spring Air units with robart struts. (spring arts).

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Post #: 159

RE: WORLD MODELS 80in. ZERO - 9/12/2005 4:19:48 PM

ultraeast

Posts: 25
Joined: 1/3/2005
From: , GA, USA
Status: offline

Capt. G,

The pic of landing gear looks great. I flew my zero this weekend and it flew great. The Mokie 1.80 cranked on the first flip and did not have to adjust the needle valve. I now have 7 flights on it. I think the key with these Mokies is to break them in slow and rich.

Jerry

(in reply to Capt G)

Post #: 160

RE: WORLD MODELS 80in. ZERO - 10/28/2005 2:26:19 PM

Educol-RCU

Posts: 70
Joined: 4/10/2003
From: Miami, FL, USA
Status: offline

Zero retracts made by Century Jets for sale with scale wheels.

$150

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< Message edited by Educol-RCU -- 11/1/2005 3:15:26 PM >

(in reply to ultraeast)

Post #: 161

RE: WORLD MODELS 80in. ZERO - 10/28/2005 6:47:26 PM

YellowAircraft

Posts: 3128
Joined: 1/5/2002
From: San Diego, CA, USA
Status: offline

quote:

ORIGINAL: cfv007

This might be a stupid question and I could probably find the answer if I did more searching around here in RCUniverse but ... with my computer and dial-up connection being SO slow it could take forever.

Where can I order one of the GS Zeros? Airborne Models used to carry em here in the US but it seems the website no longer works. Did they change web addresses? Do I have to order it from Japan directly from the factory?

After reading all the posts, I see that choices for retracts seem to include:

1. Century Jet
2. Robart
3. Spring Air

This would be my first plane with retracts. Are all the above retracts pnuematic (sp) or mechanical? And what are the pros and cons of each? Maybe they are all about equal and its just a personal choice? I suppose weight of the complete retract system should be considered.

Thanks in advance for any responses,
Chuck

< Message edited by YellowAircraft -- 10/28/2005 7:27:07 PM >

_____________________________

Yellow Aircraft, JetCat Engines, Skymaster ARF+ and Turn Key Jets
www.cyctheatre.com

(in reply to cfv007)

Post #: 162

RE: WORLD MODELS 80in. ZERO - 10/28/2005 7:25:38 PM

YellowAircraft

Posts: 3128
Joined: 1/5/2002
From: San Diego, CA, USA
Status: offline

quote:

ORIGINAL: cfv007

This might be a stupid question and I could probably find the answer if I did more searching around here in RCUniverse but ... with my computer and dial-up connection being SO slow it could take forever.

Where can I order one of the GS Zeros? Airborne Models used to carry em here in the US but it seems the website no longer works. Did they change web addresses? Do I have to order it from Japan directly from the factory?

After reading all the posts, I see that choices for retracts seem to include:

1. Century Jet
2. Robart
3. Spring Air

This would be my first plane with retracts. Are all the above retracts pnuematic (sp) or mechanical? And what are the pros and cons of each? Maybe they are all about equal and its just a personal choice? I suppose weight of the complete retract system should be considered.

Thanks in advance for any responses,
Chuck

Hi,

Of the three, I'd go with SpringAir. The spring down action can be slowed if you desire, but having the gear extend if you lose air is worth its tonnage in gold. I've had bad luck with CJM gear in many different ways, but one big problem is that the oleos don't seem to squish if there is any side-load on the strut at all. Robarts are OK, but if you can get away with a smaller air tank and less tubing--why not?

_____________________________

Yellow Aircraft, JetCat Engines, Skymaster ARF+ and Turn Key Jets
www.cyctheatre.com

(in reply to cfv007)

Post #: 163

RE: WORLD MODELS 80in. ZERO - 10/28/2005 7:56:37 PM