RE: Aeroworks 96" Extra 260 ARF QB Assembly

RE: Aeroworks 96" Extra 260 ARF QB Assembly
View related threads: (in this forum | in all forums)

Logged in as Guest

Users viewing this topic: none

Printable Version

All Forums >> RC Airplanes >> Giant Scale Aircraft - 3D & Aerobatic >> Aero-Works Support >> RE: Aeroworks 96" Extra 260 ARF QB Assembly

Page: << < prev 6 7 8 9 10 11 12 [13] 14 15 next > >>

Login

Message

<< Older Topic Newer Topic >>

RE: Aeroworks 96" Extra 260 ARF QB As... - 4/1/2008 5:47:07 PM

MR G

Posts: 560
Joined: 12/20/2002
From: San Antonio, TX, USA
Status: offline

I am about to begin my Extra, I will be putting a DA-85 in the nose and use 5955 on control surfaces and 5625 on throttle.
I will use a manual choke. I am wondering whether to use a pull-pull on the rudder or put the servo in the tail?

What do you guys think??

Thanks

MR G

_____________________________

Take-offs are optional...
Landings are mandatory!

(in reply to smarks)

Post #: 301

RE: Aeroworks 96" Extra 260 ARF QB As... - 4/1/2008 6:17:16 PM

smarks

Posts: 269
Joined: 10/17/2005
From: Castle Rock, CO, USA
Status: offline

Are you running a can or std muffs? What about power system? I am running std muffs, dual LiMg Rx packs and I came out tail heavy with mounting the servo in the tail. If I did it again, I may have run pull-pull. But running it in the tail is an easier setup. I also cut out the rear servo tray to save weight.

(in reply to MR G)

Post #: 302

RE: Aeroworks 96" Extra 260 ARF QB As... - 4/1/2008 6:28:19 PM

mflander

Posts: 245
Joined: 5/23/2005
From: Elk River, MN, USA
Status: offline

quote:

ORIGINAL: MR G

I am about to begin my Extra, I will be putting a DA-85 in the nose and use 5955 on control surfaces and 5625 on throttle.
I will use a manual choke. I am wondering whether to use a pull-pull on the rudder or put the servo in the tail?

What do you guys think??

Thanks

MR G

da85 on a ks95 canister here... cg came out perfect with two a123 packs side by side with the receiver and rudder servo in the tail....

Attachments

Click to see fullsize image.

Click for fullsize

Click to see fullsize image.

Click for fullsize

(in reply to MR G)

Post #: 303

RE: Aeroworks 96" Extra 260 ARF QB A... - 4/2/2008 12:42:29 AM

Paul Cataldo

Posts: 816
Joined: 2/9/2003
From: Fayetteville, GA, USA
Status: offline

I would have to disagree with smarks on one point here. He says the push-pull rudder servo in the tail is easier to setup than pull-pull up front.
I think EITHER is SUPER easy, and that is because Aeroworks already designed the plane with pull pull cable exit tubes, and it just don't get easier than that. SO, EITHER would be easy.
I am in the middle of building this plane, and I've got a pull pull system ready to go, and I've also got the 4.5" Titanium Pro Link ready to go, IF I end up going with push pull in the tail.
Basically, the LAST thing I'm going to do, is the rudder servo. I will mount everything, including the batteries, spinner, prop, etc, and then I will play around with the rudder servos position.
I've heard lots of guys who are using the EXACT same batteries, engine, spinner, etc, who say that you will need to do push pull in the tail, and then the others using the SAME equiptment say you must go pull pull.
I will also play around with a carbon fiber vs wood prop, to see how that affects the CG too.
SO, the best thing to do is to just wait, and do the rudder servo last...

_____________________________

Paul Cataldo

(in reply to mflander)

Post #: 304

RE: Aeroworks 96" Extra 260 ARF QB A... - 4/2/2008 12:48:23 AM

Paul Cataldo

Posts: 816
Joined: 2/9/2003
From: Fayetteville, GA, USA
Status: offline

Hey mflander,
I'm not sure if you've mentioned this before in this thread or not, but WHAT exact A123 packs did you use? SinCity packs, or Fromeco or A123?? More importantly, what size packs did you use?
I'm in the middle of a major "battery chemistry dilemma" here, and I just cannot decide if I want to go with A123 or LI ION on this plane!
Part of me LOVES to just charge up my LI IONS the night before and just fly all day long without ever worrying about charging at the field.
BUT, the other part of me LOVES the idea of ditching my regulators, and this makes me want to go with A123.
I do not like charging at the field, but I might consider it, with A123's, since they can take a high charge rate.
SO, I just cannot decide what to do. The LI ION setup WILL cost almost $200 MORE than the A123 setup, due to the 3 x Sahara Regulators from Fromeco, which cost $50 each, PLUS the cost of the Fromeco 8 ball checker, which is about $40-$50.
SO, I just don't know. I HATE charging, but I HATE regulators, and the thought of one failing during flight. I do know the Fromeco Sahara regulators probably won't fail on me though.
Decisions, decisions.

SO, what size and brand of A123's are you using mflander??? Hehe.

_____________________________

Paul Cataldo

(in reply to Paul Cataldo)

Post #: 305

RE: Aeroworks 96" Extra 260 ARF QB A... - 4/2/2008 2:54:29 AM

smarks

Posts: 269
Joined: 10/17/2005
From: Castle Rock, CO, USA
Status: offline

Both rudder setups are easy yes, but for somone who has never set up a pull-pull, IMO a direct link to the servo via push-pull would be easier. That was all I was saying.

(in reply to Paul Cataldo)

Post #: 306

RE: Aeroworks 96" Extra 260 ARF QB A... - 4/2/2008 2:01:35 PM

mflander

Posts: 245
Joined: 5/23/2005
From: Elk River, MN, USA
Status: offline

I am using two sincityjets.com a123 2300 mah packs for receiver. 6-8 flights easy, and I have been charging at 4-5 flights in less then 20 minutes. I am using the new fromeco iron corps 1200 mah pack on ignition with a fiber optic switch.

The A123 batteries are incredible. I put them in my fridge for a week, lost very little voltage. Charge insanely fast. Stable, no regs, and are good for 1,000 cycles. I don't see any other option that offers these benefits. They are a little more weight, but trust me, the plane doesn't notice it.

(in reply to smarks)

Post #: 307

RE: Aeroworks 96" Extra 260 ARF QB A... - 4/2/2008 3:12:26 PM

FlyingB

Posts: 5
Joined: 11/15/2007
From: Richmond Hill, ON, CANADA
Status: offline

I'm nearing completion of my 260, and have come up tail heavy against the recommended CG (3" aft of wing tip leading edge) by 140 in-oz (10 oz at 14" forward of CG) with no batteries or receiver installed. The wing tube is the on the CG. I'm using a DA-85, which is a bit lighter than the 3W-80xi used in the prototype. So now I'm looking for options other than dead weight to balance the airplane. Mounting the batteries as far forward as possible reduces my CG budget to 52 in-oz. I'm mounting the ignition battery on the firewall (not the engine box to keep it away from the engine heat) and 2 1500 mAh Li-Mn Duralites beside the fuel tank. The tail wheel assembly is 51 inches behind the CG, so I can achieve a zero CG budget (i.e. balance) by reducing the tail wheel assembly by 1 oz. This means going to a CF TW assembly.

Aeroworks offers several CF TW assemblies. Their Aeroworks brand one-size-fits-all looks a lot like the stock aluminum TW assembly. Aeroworks also offers Graph Tech TW assemblies, and I assume that I'll need the 30 lb TW assembly to get conservative durability. Can anyone offer recommendations on a preferred choice? Is the Aeroworks brand TW assembly at least 1 oz lighter than the stock TW assembly.

Thanks,

Bruno

(in reply to mflander)

Post #: 308

RE: Aeroworks 96" Extra 260 ARF QB A... - 4/3/2008 2:10:40 AM

Paul Cataldo

Posts: 816
Joined: 2/9/2003
From: Fayetteville, GA, USA
Status: offline

I think the AW's C/F tailwheel assembly will be lighter than the stock aluminum tailwheel assembly, but DO NOT buy that Graphtech C/F tailwheel assembly. I'm almost sure that it is HEAVIER than most any other, including the stock tailwheel assembly that came with the plane.
Those Graphtechs are just monstrosities, and my brother recently bought one, and it weighed a GOOD bit more than his stock haigh style wheel with steel strut.
I think the BEST choice is to go with a titanium style tailwheel assembly like I did. My RC Blimp Titanium Haigh style tailwheel assembly weighs a mere 1.40? or 1.80? oz. I cannot remember for the life of me what it's exact weight was, but I was in total awe when I saw it up on the scale, and how light it was.
I know the RC Blimps are hard to come by now, so you might look into the other titanium haigh style that is currently being offered. I just found out about it myself, so I do not remember the name, but I can find it for you, if you are interested. The guy has a sweet new design, very similar to the RC Blimp C/F - Titanium units. He's got a great website, with tons of pics and info.
VERY nice unit. I'll post the link when I find it in a few minutes...

_____________________________

Paul Cataldo

(in reply to FlyingB)

Post #: 309

RE: Aeroworks 96" Extra 260 ARF QB A... - 4/3/2008 3:54:57 AM

Paul Cataldo

Posts: 816
Joined: 2/9/2003
From: Fayetteville, GA, USA
Status: offline

Speaking of tailwheel assemblies, can anyone here tell me WHERE I can find those plastic tailwheel strut "hold down" clamps??? You know, when you buy a haigh style tailwheel, you always get some (usually) black plastic little hold down "straps", which keep the tailwheel from pivoting or moving.
These little "hold down straps" just screw to the underside of the fuse, and they are usually 3/16" or 1/4" diameter, depending on what diameter your haigh style tailwheel strut is.
Can anyone help? I need some in 3/16". I can probably research my butt off, and find them at the industrial supply warehouses, but I would like to first ask if anyone knows of an R/C dealer who sells them for this purpose??? Thanks guys.

_____________________________

Paul Cataldo

(in reply to Paul Cataldo)

Post #: 310

RE: Aeroworks 96" Extra 260 ARF QB A... - 4/3/2008 2:13:28 PM

mflander

Posts: 245
Joined: 5/23/2005
From: Elk River, MN, USA
Status: offline

quote:

ORIGINAL: FlyingB

I'm nearing completion of my 260, and have come up tail heavy against the recommended CG (3" aft of wing tip leading edge) by 140 in-oz (10 oz at 14" forward of CG) with no batteries or receiver installed. The wing tube is the on the CG. I'm using a DA-85, which is a bit lighter than the 3W-80xi used in the prototype. So now I'm looking for options other than dead weight to balance the airplane. Mounting the batteries as far forward as possible reduces my CG budget to 52 in-oz. I'm mounting the ignition battery on the firewall (not the engine box to keep it away from the engine heat) and 2 1500 mAh Li-Mn Duralites beside the fuel tank. The tail wheel assembly is 51 inches behind the CG, so I can achieve a zero CG budget (i.e. balance) by reducing the tail wheel assembly by 1 oz. This means going to a CF TW assembly.

Aeroworks offers several CF TW assemblies. Their Aeroworks brand one-size-fits-all looks a lot like the stock aluminum TW assembly. Aeroworks also offers Graph Tech TW assemblies, and I assume that I'll need the 30 lb TW assembly to get conservative durability. Can anyone offer recommendations on a preferred choice? Is the Aeroworks brand TW assembly at least 1 oz lighter than the stock TW assembly.

Thanks,

Bruno

I would start at 3.4-3.5" anyways.... My maiden was at roughly 3.4-3.5" and it is just about perfect for sport flying or IMAC. I am using the AW cf tailwheel and it rocks. I also have the carbon wing tube...

(in reply to FlyingB)

Post #: 311

RE: Aeroworks 96" Extra 260 ARF QB A... - 4/8/2008 1:51:03 PM

FlyingB

Posts: 5
Joined: 11/15/2007
From: Richmond Hill, ON, CANADA
Status: offline

Thank you Paul and mflander for your advice.

Here's another newbie question: What is the best way to access the mixture control screws on the DA-85?

The DA-85 instruction manual recommends installing guide tubes between the cowling and the screw heads. These would be rather long on the 260. Alternatively I could simply make my adjustments with the cowling removed, and then stick with the settings. I can recall at least one occasion where someone had to make a minor mixture setting adjustment before flying (in this case a 3W 150), possibly because the temperature-humidity was significantly different from when he last adjusted the mixture settings.

I would appreciate any advice.

Bruno

(in reply to mflander)

Post #: 312

RE: Aeroworks 96" Extra 260 ARF QB A... - 4/8/2008 2:01:16 PM

mflander

Posts: 245
Joined: 5/23/2005
From: Elk River, MN, USA
Status: offline

I put a grommet in the cowl to be able to reach a long flathead in to the mixture screws. This has worked great. Unfortunately, I think pretty much no matter what you have to take the canopy off to be able to see the needles. This is a rather quick process though. I had to dremel away some firewall to have full access to the high speed needle though.

(in reply to FlyingB)