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RE: Newly redesigned WH Extra build thread - 1/4/2007 5:53:24 AM   
Scooterpilot


 

Posts: 304
Joined: 11/10/2002
From: Antelope Valley, CA, USA
Status: offline 		I"m about ready to install the fuel tank in my 300. While looking at the builds of this plane on RCU and other forums all the fuel tanks are being placed in front of the wing tube. However, the assembly manual says mounting the fuel tank on the lower tray beneath the wing tube minimizes changes in balance.

Where should I mount the fuel tank??. I'm guess in front of the wing tube because every one is flying their machines with their tank mounted in front of the wing tube.

Regards,

Chuck

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Scooterpilot
Magnum Fuel

(in reply to cyoung450)
       Post #: 326

RE: Newly redesigned WH Extra build thread - 1/4/2007 7:17:57 AM   
mstroh3961



Posts: 1823
Joined: 8/22/2002
From: Evans, CO, USA
Status: offline 		anywhere near the wing tube will work. Just in front of the wing tube has a very small moment arm, so changes in CG as it emptys will be allmost nill.


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Regards
Mark

(in reply to Scooterpilot)
       Post #: 327

RE: Newly redesigned WH Extra build thread - 1/4/2007 7:56:29 AM   
Greg Cothern



Posts: 596
Joined: 1/7/2002
From: Seagoville, TX, USA
Status: offline 		Not a problem at all to put it in front of the wing tube on top of the canister tunnel... Works great in my application.

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Some of the products I like
Smart-Fly Hangar 9 Wild Hare MVVS & DA Engine''s Futaba Radio Hitec Digital Servo''s

(in reply to mstroh3961)
       Post #: 328

RE: Newly redesigned WH Extra build thread - 1/4/2007 3:09:18 PM   
Scooterpilot


 

Posts: 304
Joined: 11/10/2002
From: Antelope Valley, CA, USA
Status: offline 		Gentlemen

Thanks for the response

Chuck

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Scooterpilot
Magnum Fuel

(in reply to Greg Cothern)
       Post #: 329

RE: Newly redesigned WH Extra build thread - 1/4/2007 3:14:02 PM   
Greg Cothern



Posts: 596
Joined: 1/7/2002
From: Seagoville, TX, USA
Status: offline 		Glad to help!

_____________________________

Some of the products I like
Smart-Fly Hangar 9 Wild Hare MVVS & DA Engine''s Futaba Radio Hitec Digital Servo''s

(in reply to Scooterpilot)
       Post #: 330

RE: Newly redesigned WH Extra build thread - 1/4/2007 5:48:34 PM   
rctom



Posts: 5329
Joined: 5/8/2002
From: Flower Mound (near Dallas), TX, USA
Status: offline 		That statement in the manual is left over from the earlier design.

At the time I believed that putting thetank right on the CG was necessary. Even though I was unable to detect balance changes I thought that the really top notch pilots could detect a change.

After talking to some TOC level pilots I now know that the change is so minor that nobody can feel it when the tank is close to the tube, it does not need to be centered.

Live and learn.

TF

< Message edited by rctom -- 1/4/2007 5:58:22 PM >

(in reply to Greg Cothern)
       Post #: 331

RE: Newly redesigned WH Extra build thread - 1/5/2007 5:53:14 AM   
Scooterpilot


 

Posts: 304
Joined: 11/10/2002
From: Antelope Valley, CA, USA
Status: offline 		I'm getting close to getting the 300 completed.

Wx forecast for tomorrow is windy, so I plan on completing the build tomorrow. Here's some pic's of the work in progress.



Attachments
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Scooterpilot
Magnum Fuel

(in reply to rctom)
       Post #: 332

RE: Newly redesigned WH Extra build thread - 1/5/2007 3:34:38 PM   
Greg Cothern



Posts: 596
Joined: 1/7/2002
From: Seagoville, TX, USA
Status: offline 		Looks Great!!!!

_____________________________

Some of the products I like
Smart-Fly Hangar 9 Wild Hare MVVS & DA Engine''s Futaba Radio Hitec Digital Servo''s

(in reply to Scooterpilot)
       Post #: 333

RE: Newly redesigned WH Extra build thread - 1/6/2007 7:01:06 AM   
Greg Cothern



Posts: 596
Joined: 1/7/2002
From: Seagoville, TX, USA
Status: offline 		Some of the previous posts talked about the elevator halves hitting the pull-pull cables limiting down throws to around 36-38°. I was trying waterfalls today and could not get enough to flip it around the wing, it was more of a very small loop. Not sure I want to trim the inside corners of the elevators to gain the extra throw or not.


_____________________________

Some of the products I like
Smart-Fly Hangar 9 Wild Hare MVVS & DA Engine''s Futaba Radio Hitec Digital Servo''s

(in reply to Greg Cothern)
       Post #: 334

RE: Newly redesigned WH Extra build thread - 1/6/2007 11:08:36 PM   
Greg Cothern



Posts: 596
Joined: 1/7/2002
From: Seagoville, TX, USA
Status: offline 		Another great day of flying!! Had a bit of wind today probably 12 mph nothing major, landings were much shorter and almost wouldnt land LoL. Even at idle it wanted to keep flying, slightly nose high attitude and it was rock solid and floating and floating.
Idle speed, knife edge slips were awesome, just nice and gentle would slip loose altitude and walk forward. Harriers were fun with the bit of wind, it would almost stand still with the nose 45-50° up, barely any forward movement, just awesome!!
I am extremely happy with this combo, the MVVS is running PERFECT and has great pull, dont think it could be any better.

_____________________________

Some of the products I like
Smart-Fly Hangar 9 Wild Hare MVVS & DA Engine''s Futaba Radio Hitec Digital Servo''s

(in reply to Greg Cothern)
       Post #: 335

RE: Newly redesigned WH Extra build thread - 1/7/2007 2:52:26 PM   
FlyinTiger



Posts: 651
Joined: 1/26/2004
From: Penn Valley, CA, USA
Status: offline
quote:

ORIGINAL: Greg Cothern

Some of the previous posts talked about the elevator halves hitting the pull-pull cables limiting down throws to around 36-38°. I was trying waterfalls today and could not get enough to flip it around the wing, it was more of a very small loop. Not sure I want to trim the inside corners of the elevators to gain the extra throw or not.




You might check your CG too. If you are too far forward the elevators won't be as effective as you would like. Balancing the plane so that when you're flying a 45 degree upline the nose stays neutral when upright or inverted will produce unbelievable waterfalls and knife edge spins! I couldn't hardly believe how fast the "New" Extra rotates around the CG when I apply full elevator.

Enjoy!

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FlyinTiger

(in reply to Greg Cothern)
       Post #: 336

RE: Newly redesigned WH Extra build thread - 1/7/2007 8:42:45 PM   
aeroboy1293


 

Posts: 101
Joined: 8/6/2006
From: Barnstaple, UNITED KINGDOM
Status: offline 		Guy's

Just going back a few steps here, hope you don't mind.

Has anyone found a more suitable 3.5" main wheel that fits inside the wheel spats better than the du-bro's that I have at the moment.

Does anyone have one of these airplanes with 3W power instead of the DA.

Although my model hasn't flown yet (im waiting for my Emcotec DPSI MINI 5) to come from germany. I have been following these build threads with great interest and the more I read the more I want to go fly it.

(in reply to FlyinTiger)
       Post #: 337

RE: Newly redesigned WH Extra build thread - 1/7/2007 9:21:41 PM   
sailing1


 

Posts: 292
Joined: 8/17/2004
From: tulsa, OK, USA
Status: offline 		Had the same problem with the wheels fitting in the wheel pants. About the only way you can get the stock wheel and wheel pant combination to work is to grind about all of the bottom curved part of the wheel pant out to the sides. This will let you use the stock wheels and wheel pants but is weakens the wheel pants to the point where just about any little bump of bruse will crack them. I have a set of Carbon gear with PSP titanium axles and Kavan light weight wheels for my Extra and you can forget about the wheel pants if you want to use these pieces -- the axles and wheels are just to wide. There was some word about Wild Hare putting together some larger wheel pants but I sure haven't seen any.

(in reply to aeroboy1293)
       Post #: 338

RE: Newly redesigned WH Extra build thread - 1/7/2007 9:41:14 PM   
aeroboy1293


 

Posts: 101
Joined: 8/6/2006
From: Barnstaple, UNITED KINGDOM
Status: offline 		The sullivan sky-lite is supposed to be narrower than the du-bro but over here they are about £20 or approx $38-40 for a pair. A bit too pricey to try them on the off chance.

(in reply to sailing1)
       Post #: 339

RE: Newly redesigned WH Extra build thread - 1/7/2007 9:55:46 PM   
sailing1


 

Posts: 292
Joined: 8/17/2004
From: tulsa, OK, USA
Status: offline 		Even with the narrower Sky Lite wheel the fit is just to tight. By the time you two wheel collars on the axle you have used up the complete width of the wheel pant. It just needs a bigger wheel pant!

(in reply to aeroboy1293)