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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/25/2009 8:02 PM   
F4u5



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Status: offline 		I just prefer the redundancy of 2 receivers in case a set of batts/Rx or etc. fails, I still have 1/2 control of the plane then.

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/25/2009 10:56 PM   
NCIS


 

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Status: offline 		Jeff and All,

I haven't decided on the radio yet but it will be 2.4 mgh. So it will already have two receivers and I was going to run dual batteries on each one with the BatShare System and they will be 6.0V 4200mah. I only know what I've been told and read on their website but it seems failsafe to me. Any advice on which system is best and how to install it?

Barry

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/26/2009 12:43 AM   
warks62



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Status: offline 		You can't run two seperate main recievers on 2.4 at least not on JR. Not sure about Futaba's 2.4 but you can only bind one reciever at a time on the Transmitter. You can run 2 recievers on FM. If you run JR 2.4 they make recievers for high power drain if neccessary. In fact it has 2 battery inputs on the reciever. Is a powerbox really neccessary on a Warbird even at 120" or so? Being that I fly with friends that all have very large Warbirds in the neighborhood of 70-80# and they are not using a powerbox and never have had a problem I will go with what I see. I really think that the Jet and especially 3D technology have come into the Warbird area and is just way to over kill. At the speeds Jets go and the amount of deflection that the 3D put on their surfaces and the fact that they use very high amperage servos I see them using such a device but on a Warbird that only moves a surface a 1/4" at most for most maneuvers the torque on the servo just isn't there. I use to have a program that you would put all the data from your airplane like wingspan, weight, max speed, the square inches of each flight surface and then it would gice you an approximate idea on how many inches of torque was needed and I was amazed at the low numbers. Just saying this because money well spent is great but wasting it on more devices that in themselves can fail just doesn't make sense to me. I was told a long time a go by many buiders keep it simple.

Not trying to argue or be difficult just point another side. By the way I use a 2.4 system and will never go back. I feel so much better when I go to meets and no longer worry about someone turning on a transmitter. I didn't worry about the other pilots so much because we all do a pretty good job but there are always people trying to sell equipment and would see many times when someone was selling a transmitter that the first thing someone would do when they picked it up was turn it on. Some sellers were smart enough to remove the module some were not. Just something to think about.

< Message edited by warks62 -- 6/26/2009 12:59 AM >

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/26/2009 1:10 AM   
Zeeb



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quote:

ORIGINAL: warks62

You can't run two seperate main recievers on 2.4 at least not on JR.



This is incorrect information....

You can bind as many Spektrum/JR 2.4GHz rx's to one model slot on a tx as you would like. Not sure where you got this idea that only one rx can be bound at a time?

As for PowerSafe rx's vs. the standard say R921's, both rx's have the same electrical buss capable of 35 amps continous and burst to 50 amps, but the PowerSafe rx's do have the dual 16g. inputs with built in "fail on" softswitches and battery isolation which is not found on the standard rx's.

While some may consider the AR-9000/R921 rx's as having "dual" receivers, that's not really the same as running dual rx's which is typically done for power distribution (not usually an issue with Warbirds), getting more servo slots or for system redundancy as noted above. The only thing that keeps the PowerSafe rx's from completely replacing PE's right now is the limited number of servo slots per channel which is offered by a PE and that's why you still see some sort of power distribution setup on the 40% size aerobats which tend to run 3 servos per aileron, 2 servos per elevator and so on. But they work great for 35% size stuff and smaller models.

The AR-9000/R921 as well as the R1221 rx's actually do have two rx's inside the main unit with the 9 channel rx's capable of running two additional satellite rx's while the R-1221 can run three additional satellites. The PowerSafe rx's have no receivers inside the main unit and can run four satellite rx's.

Hope that helps clear up some confusion.

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/26/2009 2:24 AM   
warks62



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Status: offline 		Zeeb, I will have to try it. I can say that I never actually tried to bind more than reciever to a single slot but I had called JR asking about it and they said that due to Model Lock that it could not be done right now. Being he said "not right now" I asked does that mean in the near future it will be an option and he only said he did not know. If it can be done that is great I had done this before on FM just for in case a reciever would go bad you could still make it in on one sharing flight surfaces (one aileron on one reciever and the other aileron on the other reciever). Have you actually bound two recievers on one model slot if so do you have to do both at the exact same time just courious.

Thanks,

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/26/2009 2:46 AM   
Zeeb



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Status: offline 		Randy,

Yeah I've bound multiple rx's to the same memory slot on a tx. You can do 'em one at a time or most guys are just doing both at the same time, just make sure all the lights on all the rx's (including all satellites) are lit solid before you shut down the binding process.

The guy who introduced me to the Spektrum radios when they first came out with the DX-7 is one of the Team-Horizon (used to be called Team JR) guys. I went up to his place and we played around with 'em quite a bit, actually bound three rx's to the same tx memory slot and they all worked. He even put 'em in a trainer he keeps around just to see if it'd work and it was fine, three rx's running different controls and you'd have never known the difference to fly the thing.

Basically what happens is that each native tx or module has it's own GUID (computer speak = Global Universal Identifier) and this code is transmitted with each data packet. Then the native tx has another number for each memory slot, so when you bind an rx it writes the tx's GUID along with the model slot ID to the rx's flash memory. Then the rx will only "listen" to data packets which have the appropriate GUID number attached to them, that's how the ModelMatch function works. Now on the module based systems other than the 12X MV, there is no ModelMatch so any rx bound to that module equipted tx will respond no matter what model is selected on the tx.

Sounds like maybe you ran into a newbie guy at the support center who wasn't up to speed on things?????


edit info:

Hmmm....

Right now I can't swear to you that my description of the acronym for the GUID is exactly correct, might be unique for the "U" but it really doesn't matter I guess... lol

Point is, you can see how it would be possible to bind more than one rx to the same slot. I think Futaba FASST systems are like the Spektrum/JR module conversions, they'll run any rx once setup if it's on and the only difference would be that Futaba uses a different protocol between the 7 channel and below rx's and the 8 channel and above are different and require that those be accounted for when setting up the model on a tx. On a side note, Bax over on the Futaba support forum has indicated that the big 14 channel 6014 FASST rx's can only handle 8 amps and Futaba has an input voltage restriction as well, nothing like the Spektrum/JR stuff which is just under 10 volts, 9.8 IIRC?????

< Message edited by Zeeb -- 6/26/2009 2:56 AM >

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/26/2009 3:00 AM   
tfarmer96



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Status: offline 		For you guys who are interested. Gary has started producing fiberglass part for the Giant Topflite F4U. These will allow you to create light and strong main and rear gear doors as well as 2 switch hatches. They are available at the following link

http://www.wyliewarbirds.com/products/products.htm

Click on the photo of the parts for a larger image of the parts. If you have any questions please feel free to contact me or click on the "contact us" link on my website

Thanks!

Terry



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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/27/2009 3:34 AM   
DaddySam


 

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Status: offline 		I am using Gary's fiberglass gear doors and his fiberglass work is second to none! I highly recommend him.
Back from camping so now I'll be working on the gear door actuation. Had some park flyer control hardware come in while I was gone so hopefully I'll be able to make some progress.
Sam

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/27/2009 6:51 PM   
NCIS


 

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Status: offline 		What if anything did you have to change on the center sections TE ribs for the gear doors to fit properly if your using Gary's doors?

Barry

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/27/2009 10:00 PM   
tfarmer96



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Status: offline 		role down about 1/4 way in his build thread.

http://www.wyliewarbirds.com/projects/gary4fu/index.html



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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/27/2009 11:14 PM   
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Status: offline 		Did you change from balsa to aircraft ply for the sides of the wheel well? I can't tell if you used ribs 3 and T-1 and changed them to aircraft ply. If so what distance apart are they and is rib 3 at 90 degrees from the building surface? Or did you just make up your own wheel well?

Barry

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/28/2009 3:10 AM   
DaddySam


 

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Status: offline 		Barry,
I made light ply wheel well sides and back, about 5.25" across. I'll check my notes when I can access them. The gear door hinges mount onto the sides or the underside of the wing skin, depending on the hinges used. I'm using small hinges from Sonictronics. I'll try to post a pic or two later.
Sam

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/28/2009 3:47 AM   
GaryM



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Status: offline 		Barry I also used light ply 1/8 to make the sides of my wheel wells also. They are in addition to the stock ribs. They are pretty much 90 degree to the sheeting or same size at the door opening as up next to the top sheeting. The rear section is trimmed out in some light balsa. I let my doors over lap and rest on the wing sheeting by about 1/8 to 3/16 of an inch. This gives them something firm to close against and helps maintain a flush look. I then trimmed around the outer edge of the doors with a piece of 1/16 balsa abut a 1/4 inch wide. I then floated a light coat of filler out about an inch or so to flow into the wing skin. Once glassed over it has a smooth appearance. It may sound heavy but it really weighs next to nothing if you use the light filler. You could do the same thing with just filler next to the door and eliminate the balsa banding but it gives a good atraight edge up next to the door.

Gary

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/29/2009 2:23 AM   
cdohaney


 

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Status: offline 		Well guys,

After much testing and cutting, I discovered that my exhaust is too restrictive. My new plan gives me about 6900 RPM with 22x10 prop. I tested with a digital scale and am pulling about 28 lbs thrust. I am reengineering it and hopefully will have my new version done in the next couple of weeks....we are going to Prince Edward Island on motorcycle for a one week vacation and the wife won't let me stay and work on my plane. Apart from that everything works great...hopefully maiden before the end of July.

Chris
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< Message edited by cdohaney -- 6/29/2009 2:25 AM >

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/29/2009 11:34 PM   
NCIS


 

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Status: offline 		Thanks for the info on the wheel well sides. I will do as Gary and use balsa at the rear. I am using Robart Offset hinges.

Barry

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/30/2009 12:01 AM   
DaddySam


 

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Status: offline 		Barry
Depending on how you actuate your doors, if you plan on mounting a servo at the rear of the gear bay, you may want to use light ply. If you're going to use air cylinders then maybe you won't.
Sam

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/30/2009 3:18 AM   
ctflyboy


 

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Status: offline 		Barry,
Another way you can lay up layers of fiberglass, that way your sure to get the contour of the wing in the area of the doors.
Thats what Winston, myself, and a few others, did
Just my $.02 worth



George
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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/30/2009 3:57 AM   
DaddySam


 

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Status: offline 		I laid up my own door skins and then tried Gary's. I still have mine for emergency replacements, but Gary's are PRO-fessional! No comparison to my poor efforts.
Sam
PS Still tinkering with the right way to actuate my gear doors -uuugggghhhh

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/30/2009 12:10 PM   
cdohaney


 

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Status: offline 		Hi Barry,

I laid up my own gear doors. I sheeted the bottom and used 3 layers of 5oz glass with full stregnth Zpoxy. I also didn't sheet the top of the wing until the doors were completed and fully functiional. Here are a couple of links to a video and some pics. Hope this helps.
Main Gear Door Mechanics Main Gear Doors Complete

Chris
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< Message edited by cdohaney -- 6/30/2009 12:14 PM >

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 6/30/2009 3:05 PM   
dgrantham


 

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Absolutely awesome engineering and craftsmanship. Best of luck on the maiden.

David

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 7/2/2009 3:35 PM   
frisconick


 

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Status: offline 		Hi Guys,

Thought I'd jump in here. My TF kit arrived yesterday. WOW. I started inventorying the pieces and quickly got overwhelmed!! Hope to get started this weekend. It's been many years since I actually built a KIT, but I needed a project that wouldn't be done in a couple of weeks. I have a new DA-85 looking for a home. Would it be too much for this plane? Although I'm not sure you can put too much power in a warbird. Gary, Terry, I'll be ordering a set of the gear doors from you. Will talk to you next time I see you at NDRCC field. Gary, hope you don't mind if I pick your brain on this project. When are you coming back out to the field. If there is a Brotherhood number left, I'd be honored to get one.

Thanks all,
Nick


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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 7/2/2009 5:34 PM   
rt3232


 

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Nick

Welcome to the thread and as for the brotherhood just pm cityflyboy and he will take care of you.


cheers Bob T

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 7/2/2009 5:50 PM   
Thunderbolt47



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Status: offline 		Hey Nick, I'm running a ZDZ80 in mine. I'm able to swing a big prop to make the most of the power. So I would say it's not overpowered, but the bigger engines are harder to hide.
Later,
Kelly

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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 7/2/2009 5:58 PM   
frisconick


 

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Status: offline 		Not too worried about trying to hide the engine. I'm not going for true scale here with my first big kit; just stand off (next zip code) scale. In other words, I'm just hoping it still looks like a Corsair when I'm done !! Once I get a ways into the build, I'll decide if I want to go through the extra effort, or just "fly it".


Thanks,
Nick


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RE: GROUP BUILD - Top Flite Giant Scale F4U Corsair - 7/2/2009 9:57 PM   
GaryM



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Status: offline 		Nick, I will be more than happy to help with any questions. The head on the 85 will drop below the cowl maybe 1 to 1 l1/2 inches. I considered it, measured it, then went with the 50. You have the 85 so I would use it and swing a big 3 blade and look extra cool.

I have used up my 3 free life time visits at North Dallas, so I have to either join or just visit and not fly. I just cant justify belonging to two clubs even though it sure would be nice to visit once a month and fly with my buds.

Call if you need help.

Gary

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