The Whale  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       



All Forums >> RC Airplanes >> Pylon Universe - RC Pylon Racing >> Q-500 Racing >> The Whale Page: [1] 2 3 4   next >   >>  

Login
Message << Older Topic   Newer Topic >>
The Whale - 1/19/2008 10:05:12 PM   
daven



Posts: 6650
Joined: 12/7/2001
From: Andover, MN, USA
Status: online 		I've been kicking this around for a couple years, and I finally just decided to do it. I built this with all leftover parts that I had around the shop without buying anything. My goal was to create a simple to build Q500 airplane, that utilizes an off the shelf ARF wing (VIPER), that would be competitive in 424 or club style Quickie Racing.

I am very much looking forward to this test flight, I expect it to be intereresting. My hope is to get it in the air, find out its bad habits, safely land it, and then mix them out with my radio. If any of you experts out there want to predict the effects of a full pull elevator turn on knife, or expected take off / landing issues, I'd be curious to hear your thoughts.

I had a great name picked out for this plane, but after taking the first picture below, I figured if it looked like a Whale, thats what I should call it.

If any of you question my sanity, so be it, it was fun and partially induced by cold wintery days like today mixed with a couple coldies.

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize


_____________________________

Dave Norman

klasskote.com
supertrc.com
       Post #: 1

RE: The Whale - 1/19/2008 10:17:07 PM   
daven



Posts: 6650
Joined: 12/7/2001
From: Andover, MN, USA
Status: online 		A few more things about the plane.

TT .40 on the nose (9x6 prop)

Elevator Servo JR 3421
Rudder Servo Hitec 225
Aileron Servo JR Sport MN 48
Throttle Servo Hitec 85
Standard JR switch
600 mah NICD battery
Hitec 555 Battery
4 oz Tetra Tank

Servo hatch behind the wing on bottom (not sure why I did that).

Weight came out at 3 1bs 12.8 oz, so its a hair heavy, I could replace the heavy battery, but it helped get the balace to 2 3/4". Part of the weight issue was the additional reinforcing, and the heavier than usual Viper Wing.

The tail area is heavily reinforced to help minimize twisting.

The Horizontal Stab started with a center piece of 3/16" balsa with 1" wide Carbon Laminate .007 laminated on each side. Then top and bottom of the Horizontal stab got a layer of 3/4 oz glass and then capped both sides with a piece of 1/32" balsa and vacumm bagged. After this came out, it was sanded to shape and mounted.

The inside of the left side of the fuse is fiberglassed with 3/4"oz glass and has substantial additional Carbon Laminate supports up to the middle of the wing. Their is 1/4" tri stock in the corners of the fuse from the servos back, and the top and bottom of the fuse are supported with 1/8" cross grain balsa. There is an additional fuse former about half way back from the trailing edge to the tail. This not only helped with support, but it allowed the substantial bend in the balsa right fuse side.

The complete fuse was fiberglassed with 3/4 oz glass, primed, and painted with some rattle can Mettalic Charcoal from Dupli-Color. Not sure where that came from, but I used it. Hope its fuel proof.

_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to daven)
       Post #: 2

RE: The Whale - 1/19/2008 10:18:13 PM   
neilrether


 

Posts: 12
Joined: 9/22/2002
From: Stillwater, OK, USA
Status: offline 		I'm thinkin you had MORE than a COUPLE of coldies! Looks very interesting.

Good Luck!

(in reply to daven)
       Post #: 3

RE: The Whale - 1/19/2008 10:39:01 PM   
BUDMAN27



Posts: 1114
Joined: 3/28/2006
From: Galveston, TX, USA
Status: offline 		A 424 that flys knife edge the hole race. Wow I got to hand it to Dave. That is pure genius.

(in reply to neilrether)
       Post #: 4

RE: The Whale - 1/19/2008 11:07:21 PM   
Super Splatter



Posts: 380
Joined: 3/21/2006
From: , MN, USA
Status: offline 		ya' know ? , that one might just stay in the garbage can when your done with it ..

(in reply to BUDMAN27)
       Post #: 5

RE: The Whale - 1/19/2008 11:24:04 PM   
HighPlains


 

Posts: 2545
Joined: 3/2/2003
From: Over da rainbow, KS, USA
Status: online 		Dave,

I was wondering when the Blohm and Voss would make an appearance.

Due to the fuselage shape, I would expect it to pull hard left on launch. With the stab on that side it will want to roll into the turn when you pull it.

< Message edited by HighPlains -- 1/20/2008 5:53:45 PM >

_____________________________

"Pay no attention to the man behind the curtain"

(in reply to Super Splatter)
       Post #: 6

RE: The Whale - 1/19/2008 11:39:37 PM   
Bill Vargas



Posts: 1523
Joined: 1/6/2002
From: Team Coldies, CA, USA
Status: offline 		I was once told by an old Drag Racer,,, if its ugly, shakes and rattles and makes a lot of noise,,, its probably Fast

left dutch roll on take off, left snap to inverted coming out of 1 and a complete snap to the left out of 3 that will scatter the guys leaving you in the lead to take the checkers!


BV

_____________________________

If it ain't leaking oil, then something's wrong,,, USMC, RETIRED!

(in reply to HighPlains)
       Post #: 7

RE: The Whale - 1/19/2008 11:55:54 PM   
vicman



Posts: 5912
Joined: 12/8/2002
From: Valdese, NC, USA
Status: offline 		Much less controversy than the Hauler II


_____________________________

Bigger Badder Meaner Faster!
Revver Brotherhood & NMPRA #41

(in reply to Bill Vargas)
       Post #: 8

RE: The Whale - 1/20/2008 12:58:10 AM   
daven



Posts: 6650
Joined: 12/7/2001
From: Andover, MN, USA
Status: online 		Theres no doubt this is legal, it just brings sanity into question in regards to the builder.

I made the rudder pretty good sized.

My biggest concern is a hard left roll when I make that first full elevator turn.. I was thinking about how I would test fly it, and it will be a gradual takeoff from idle to see how hard it pulls left on the ground to decide how much rudder I need for flight #2. Once airborne, instead of making a standard left turn I will get some altitude and make an immelman turn to see the effects of the elevator pull. The viper Ailerons are pretty small, but I set them up for max throw to try and control this thing after I know what its going to do. I still think there is also going to be some sort of yaw issue with elevator, but I think the roll will be worse.

I just hope to get a few flights in it to try and mix it out before the locals start digging through the trash can. First flight won't be much more than 1/2 throttle, unless its flyable.

All in good fun, now I gotta finish the rest of 2008's fleet.

_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to vicman)
       Post #: 9

RE: The Whale - 1/20/2008 1:12:20 AM   
Truckracer


 

Posts: 516
Joined: 4/3/2004
From: Des Moines, IA, USA
Status: online
quote:

ORIGINAL: daven

Theres no doubt this is legal, it just brings sanity into question in regards to the builder.

I made the rudder pretty good sized.

My biggest concern is a hard left roll when I make that first full elevator turn.. I was thinking about how I would test fly it, and it will be a gradual takeoff from idle to see how hard it pulls left on the ground to decide how much rudder I need for flight #2. Once airborne, instead of making a standard left turn I will get some altitude and make an immelman turn to see the effects of the elevator pull. The viper Ailerons are pretty small, but I set them up for max throw to try and control this thing after I know what its going to do. I still think there is also going to be some sort of yaw issue with elevator, but I think the roll will be worse.

I just hope to get a few flights in it to try and mix it out before the locals start digging through the trash can. First flight won't be much more than 1/2 throttle, unless its flyable.

All in good fun, now I gotta finish the rest of 2008's fleet.


I once lost half of my stab in a midair on an older quickie and it flew exactly the same! I finished the race (think I won it) and landed without problems. Maybe roll won't be as bad as you think. Will be an interesting first flight though.

(in reply to daven)
       Post #: 10

RE: The Whale - 1/20/2008 1:31:47 AM   
skull1971



Posts: 732
Joined: 4/24/2006
From: Willis, TX, USA
Status: online 		I didn't think it would be legal,, being "Unconventional"

_____________________________

ERIC, Revver Bro. 159, NMPRA 59i, Knucklehead #1
What happen? The ground got in the way of the plane!

(in reply to Truckracer)
       Post #: 11

RE: The Whale - 1/20/2008 1:45:17 AM   
Jerry-B


 

Posts: 39
Joined: 1/29/2002
From: Ramsey, MN, USA
Status: offline 		Dave
I think FREEWAY designed that one. I am going to call my daughter and have her check up on you LOL

_____________________________

Jerry-B

(in reply to skull1971)
       Post #: 12

RE: The Whale - 1/20/2008 3:51:06 AM   
PylonDave



Posts: 189
Joined: 5/8/2006
From: rancho cucamonga, CA, USA
Status: offline 		Just goes to show thiers not much to do in Minnesota this time of the year!!!!

(in reply to Jerry-B)
       Post #: 13

RE: The Whale - 1/20/2008 5:35:24 AM   
clb


 

Posts: 64
Joined: 9/23/2005
From: PARISIle de France, FRANCE
Status: offline 		Dave,
When my calller saw your pictures she said : "He has not yet finished the building!"
It was 6.00 am.
Good luck for the first flight.
Claude.

(in reply to PylonDave)
       Post #: 14

RE: The Whale - 1/20/2008 5:55:55 AM   
daven



Posts: 6650
Joined: 12/7/2001
From: Andover, MN, USA
Status: online 		Jerry,

Daughter agrees with you

_____________________________

Dave Norman

klasskote.com
supertrc.com

(in reply to clb)