"1/2 A" & "1/8 A" airplanes These are the small ones...more popular now than ever.

.061 on a 2X4

Reply

Old 04-20-2011, 01:57 PM
  #1  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default .061 on a 2X4

I have just about got my H.O.B 2X4 framed up. My plan was to power it with a 400 size
outrunner. My hobby budget has tightened, and now I'm considering using a Novel .061
that I already have. The mount fits perfectly with room for the pushrod tube.
How will this combo perform?
skyraider71 is offline  
Reply With Quote
Old 04-20-2011, 02:23 PM
  #2  
earlwb
 
earlwb's Avatar
 
Join Date: Aug 2009
Location: Grapevine, TX
Posts: 5,993
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

Should be fine. I remember guys using a Cox .049 engine on 72 inch wing span gliders before.
I once had a Xmas present given to me of a Cox RTF foamie glider with a 57 inch or thereabouts wingspan and it had a plain vanilla .049 reed valve engine and it worked just fine.

earlwb is offline  
Reply With Quote
Old 04-20-2011, 02:24 PM
  #3  
Andrew
 
Join Date: Feb 2003
Location: Murray, KY
Posts: 3,195
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

I think you'll find it quite satisfactory.

One of our club members flys a Goldberg Gentle Lady (~ 78" span) using a COX .049 on a powerpod. His plane is a little heavy and the .049 hauls it up, albeit not at a high rate of climb. The 2x4 is smaller and should come out lighter, although the wing loading may be a bit higher. The NORVEL has more power than the COX so you should get a nice climb out. The 2x4 can come out tail heavy and I would be inclined to finish covering it before mounting the servos - that will give you a better chance to balance it without adding any lead. I would also leave off the throttle servo and just wire the throttle open - you won't be doing any touch & go's anyway. You should expect around 7 to 9 minutes on an ounce of fuel, enough to get to altitude and putz around some before gliding.

andrew
Andrew is offline  
Reply With Quote
Old 04-21-2011, 11:01 AM
  #4  
BMatthews
 
BMatthews's Avatar
 
Join Date: Oct 2002
Location: Chilliwack, BC, CANADA
Posts: 12,337
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

With the engine proped for max power the 2x4 at full throttle will behave like a scalded cat! Fast steep climbs will be easy. Rudder rolls at speed will be sharp and snappy. Go easy on using lots of elevator at high speeds because you could easily generate enough G to bend or maybe bust the wings if you snap in full up from a fast power dive.

In fact at speed the typical settings for rudder and elevator throws will produce a very touchy to fly model. I'd suggest you use the dual rate option for aileron (used for rudder in this case) and elevator to set up for half throws for the power portion and then flick them to full rate for the glide after the engine cuts out or once you know that you can safely control it with full throws at higher speeds by just breathing on the sticks.

In any event it will NOT be boring to fly...
BMatthews is offline  
Reply With Quote
Old 04-21-2011, 02:33 PM
  #5  
mgnostic
 
mgnostic's Avatar
 
Join Date: Jan 2003
Location: Kamay, TX
Posts: 1,073
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

A product .049 pulled my gentle lady around just fine with landing gear no less. I never got a successful ROG as it tended to run off the side of the runway before it had rudder authority (no tail wheel) but it flew nicely with a firewall on the nose and a 1oz tank.
mgnostic is offline  
Reply With Quote
Old 04-22-2011, 02:07 AM
  #6  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

Mmmm, I do also have a Norvel .049 C/L. Sounds like it could be a viable option.
skyraider71 is offline  
Reply With Quote
Old 04-22-2011, 03:52 AM
  #7  
eroc144
Senior Member
My Feedback: (1)
 
eroc144's Avatar
 
Join Date: Oct 2004
Location: Downingtown, PA
Posts: 629
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

I've got a 2x4 which is essentially a practice plane for my son. I put landing gear on it and didn't worry about using light batteries, servos etc and it ended up at 24 oz.

I've powered it with NV .049's, .061s, a dieselized .061, and currently an Enya .09. They've all flown the snot out of it. It can get twitchy at higher speeds, but then that isn't really what this plane is about anyway.

EG
eroc144 is offline  
Reply With Quote
Old 04-22-2011, 04:24 AM
  #8  
Andrew
 
Join Date: Feb 2003
Location: Murray, KY
Posts: 3,195
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

Hi EG -

Nice to see you around - you've been scarce lately.

andrew
Andrew is offline  
Reply With Quote
Old 04-22-2011, 02:26 PM
  #9  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

Picked up a Hayes 2 oz tank that's a perfect fit. It's narrow enough to allow a pushrod tube on one side.
The gears in my head are turning.
skyraider71 is offline  
Reply With Quote
Old 04-23-2011, 05:11 AM
  #10  
eroc144
Senior Member
My Feedback: (1)
 
eroc144's Avatar
 
Join Date: Oct 2004
Location: Downingtown, PA
Posts: 629
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

Thanks Andrew. It's been a busy year!

EG
eroc144 is offline  
Reply With Quote
Old 04-25-2011, 03:14 PM
  #11  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

Perfect fit. A 2 oz. Hayes tank also fits nicely.
Attached Thumbnails Click image for larger version

Name:	ec87474.jpg
Views:	10
Size:	2.06 MB
ID:	1599072   Click image for larger version

Name:	wr54262.jpg
Views:	15
Size:	1.99 MB
ID:	1599073  
skyraider71 is offline  
Reply With Quote
Old 04-25-2011, 04:05 PM
  #12  
vertical grimmace
My Feedback: (1)
 
vertical grimmace's Avatar
 
Join Date: Mar 2004
Location: ft collins , CO
Posts: 7,201
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

I have had a couple of Gentle ladies with .049 TD engines. I could do consecutive loops all day long. Great set up. In fact, the prop I liked most is the APC 6-2. I have contemplated getting another one as I just loved that set up. I ended up folding the wing at a polyhedral joint at very high altitude. I must have dived it too hard, and did not have enough strength at that joint. I was able to fly it without the outer panel for a little bit, but then the whole wing came off and the fuse became a 700' lawn dart. Needless to say, not much was left except for that 3/4 of a wing!
vertical grimmace is offline  
Reply With Quote
Old 09-01-2011, 04:28 PM
  #13  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

I thought I'd share the build.
The kit comes in a small slim box, and has full color instructions.
Attached Thumbnails Click image for larger version

Name:	Ay74977.jpg
Views:	12
Size:	94.5 KB
ID:	1656292   Click image for larger version

Name:	Ok28965.jpg
Views:	11
Size:	123.8 KB
ID:	1656293  
skyraider71 is offline  
Reply With Quote
Old 09-01-2011, 04:36 PM
  #14  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

The fuse sides are glued together. Then the former and nyrod locations are marked.
I will placing both servos in the same compartment since I will be using micros.
Attached Thumbnails Click image for larger version

Name:	Us54619.jpg
Views:	10
Size:	75.0 KB
ID:	1656294   Click image for larger version

Name:	Kf14167.jpg
Views:	10
Size:	75.4 KB
ID:	1656295  
skyraider71 is offline  
Reply With Quote
Old 09-01-2011, 05:50 PM
  #15  
danilo-2
Member
My Feedback: (1)
 
Join Date: Aug 2011
Location: vancouver, BC, CANADA
Posts: 94
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

Hmmm... Had a 2x4 from HOB. Truly it was the Crappiest Glider I've built and flown.
Heavy, crudely designed and clumsy in flight.
As advise ( unsolicited or not :-) I would 'definitely Discard the Light ply Fuse bits entirely and duplicate the parts in "normal' Balsa.
Result would be Lighter and far less likely to be Banana shaped.
Also suggest Making a dihedral break at the wing centre .
The OEM upturned wingtips/dihedral, while a bit easier to build are marginal in turns.
IFambitious, I also would give seriouis thought to either reprofiling the wing ribs or making entirely New ones in a 'better' Airfoil.
Gawd knows, most any 'moderne' airfoil would be a significant improvement.
Bitter? Yup... still, 25 + years later :-)

danilo-2 is offline  
Reply With Quote
Old 09-02-2011, 02:38 AM
  #16  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4


ORIGINAL: danilo-2

Hmmm... Had a 2x4 from HOB. Truly it was the Crappiest Glider I've built and flown.
Heavy, crudely designed and clumsy in flight.
As advise ( unsolicited or not :-) I would 'definitely Discard the Light ply Fuse bits entirely and duplicate the parts in ''normal' Balsa.
Result would be Lighter and far less likely to be Banana shaped.
Also suggest Making a dihedral break at the wing centre .
The OEM upturned wingtips/dihedral, while a bit easier to build are marginal in turns.
IF ambitious, I also would give seriouis thought to either reprofiling the wing ribs or making entirely New ones in a 'better' Airfoil.
Gawd knows, most any 'moderne' airfoil would be a significant improvement.
Bitter? Yup... still, 25 + years later :-)

My intentions for this plane are to utilize it as a trainer. I'm going to use it to teach my nine year old and maybe others.
skyraider71 is offline  
Reply With Quote
Old 09-02-2011, 02:43 AM
  #17  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

The former are prepared, then are squared up and glued to one fuse side.
Attached Thumbnails Click image for larger version

Name:	Da83384.jpg
Views:	11
Size:	79.2 KB
ID:	1656407   Click image for larger version

Name:	Rm36389.jpg
Views:	10
Size:	75.1 KB
ID:	1656408  
skyraider71 is offline  
Reply With Quote
Old 09-02-2011, 02:48 AM
  #18  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

The other fuse side is lined up, and rubber bands are used to hold everything together for gluing.

Attached Thumbnails Click image for larger version

Name:	Pm35039.jpg
Views:	9
Size:	88.5 KB
ID:	1656413  
skyraider71 is offline  
Reply With Quote
Old 09-04-2011, 04:50 PM
  #19  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

The Balsa rear fuse top goes on next.
Attached Thumbnails Click image for larger version

Name:	Us53156.jpg
Views:	10
Size:	80.2 KB
ID:	1657693   Click image for larger version

Name:	Fa84874.jpg
Views:	9
Size:	97.0 KB
ID:	1657694  
skyraider71 is offline  
Reply With Quote
Old 09-04-2011, 05:11 PM
  #20  
skyraider71
Senior Member
Thread Starter
 
skyraider71's Avatar
 
Join Date: May 2008
Location: mount washington, KY
Posts: 837
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: .061 on a 2X4

I didn't have the power system and radio worked out yet so I started on the wing.
The center section is built first with familiar techniques, nothing complicated here.
Attached Thumbnails Click image for larger version

Name:	Zx70961.jpg
Views:	10
Size:	92.5 KB
ID:	1657782   Click image for larger version

Name:	Ql35112.jpg
Views:	10
Size:	79.7 KB
ID:	1657783  
skyraider71 is offline  
Reply With Quote

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service