Q-500 Racing Discuss AMA 428, AMA 424, and any other variants of Quickie 500 racing

The Smasher - Building the Wood V-Tail

Reply

Old 05-19-2009, 08:08 PM
  #1  
DonStegall
Thread Starter
My Feedback: (1)
 
DonStegall's Avatar
 
Join Date: Aug 2005
Location: MonroeNorth Carolina
Posts: 1,840
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default The Smasher - Building the Wood V-Tail

I've got to build some wood V-tails and some V-tail jigs to send out to some people. Plus some people have been waiting on plans. Since I tend to get things done on the web site quicker because I can break it down into pieces, I'm doing the plans and instructions on the web site at [link=http://www.houseofpylon.com/Q500/Smasher/WoodVTail.aspx]Building the Wood V-Tail[/link]. I will post here and try to keep that page updated. Questions here will help me refine the content there, so speak up if something is not clear.

The Smasher V-tail is very easy to build if you have the jig. because the stab saddle is at 0 degrees, all you have to do is build a stab at 0 degrees. That's actually pretty easy. The saddle on the Smasher is 1" wide at the front and 0.8" at the rear. It is 5" long. So you cut a piece of FLAT 1/4" plywood that is 5" long and 3/4" wide and bolt it down to the jig. With the supports in place, you sand the angle into the stab halves and glue them to the plywood. All of this will become clear.

The first step is to build the V-Tail jig. This jig not only works for the Smasher, but is great for other V-tails as well.

This is the jig without the supports on it. This is what we have to build. Mine is built on a piece of 3/4" MDF that is 12" x 24". The ones I build to send out to people are approximately 11" x 11" so I can ship them easily.

The PDF drawings are at [link=http://www.houseofpylon.com/Q500/Smasher/WoodVTail/V_Tail_Detail.pdf]V_Tail_Detail.pdf[/link] and [link=http://www.houseofpylon.com/Q500/Smasher/WoodVTail/V_Tail_Support.pdf]V_Tail_Support.pdf[/link]

I use the 12" x 24" piece of MDF so I can measure the tips. With the smaller jig, you just have to measure from the table top if you need to.

Print out 2 copies of the Detail sheet. We need two of the angle pieces with the hole in them.

Even if you haven't bought a Smasher, you can follow along and build a tail. Then when you get the tail done, all you need is a fuselage to bolt it to.
Attached Thumbnails Click image for larger version

Name:	Vt56978.jpg
Views:	13
Size:	94.6 KB
ID:	1201992  
DonStegall is offline  
Reply With Quote
Old 05-19-2009, 09:37 PM
  #2  
DonStegall
Thread Starter
My Feedback: (1)
 
DonStegall's Avatar
 
Join Date: Aug 2005
Location: MonroeNorth Carolina
Posts: 1,840
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: The Smasher - Building the Wood V-Tail

Just so you have an idea of what we're building, here is a wood tail that I partially built and then handed off to someone else who finished the linkage and hinges.

You don't have to do skinned hinges and you definitely don't need the carbon fiber on the elevators.
Attached Thumbnails Click image for larger version

Name:	Lj23410.jpg
Views:	22
Size:	53.2 KB
ID:	1202104   Click image for larger version

Name:	Us52722.jpg
Views:	20
Size:	43.5 KB
ID:	1202105   Click image for larger version

Name:	Bz78575.jpg
Views:	20
Size:	51.8 KB
ID:	1202106   Click image for larger version

Name:	Gb89968.jpg
Views:	19
Size:	64.6 KB
ID:	1202107  
DonStegall is offline  
Reply With Quote
Old 05-20-2009, 05:40 AM
  #3  
DonStegall
Thread Starter
My Feedback: (1)
 
DonStegall's Avatar
 
Join Date: Aug 2005
Location: MonroeNorth Carolina
Posts: 1,840
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: The Smasher - Building the Wood V-Tail

I revised the V_Tail_Detail.pdf file because the upper right angle piece was a legacy from when I was designing the jig. Now you only need to print one copy of this PDF.

After cutting the base MDF to size, cut out the drawing for the base. The areas where the support holders are going to go are cut out.

Then the paper is flipped over and 3M77 is sprayed on it. While it is still wet, attach it to the base.

Now drill and tap 10-24 holes at the holes 1/2" from the front and back. Alignment of these holes is critical and you must use a drill press. If you mess up, flip over the piece of MDF and try again on the other side. Just make sure you orient the paper so the holes will not be in the same area.

After tapping the holes, soak in some thin CA. Let it fully harden, then re-tap the holes. finally buff the top of the holes with some sandpaper, but don't mess up the drawing.
Attached Thumbnails Click image for larger version

Name:	Tr50080.jpg
Views:	8
Size:	33.7 KB
ID:	1202307   Click image for larger version

Name:	Xs57446.jpg
Views:	10
Size:	41.1 KB
ID:	1202308   Click image for larger version

Name:	Rw58505.jpg
Views:	11
Size:	38.8 KB
ID:	1202309  
DonStegall is offline  
Reply With Quote
Old 05-20-2009, 06:59 AM
  #4  
DonStegall
Thread Starter
My Feedback: (1)
 
DonStegall's Avatar
 
Join Date: Aug 2005
Location: MonroeNorth Carolina
Posts: 1,840
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: The Smasher - Building the Wood V-Tail

Next I make the support holders.

I 3M77 them to some MDF and cut them out. These are not super critical.

After cutting them out, drill and tap for 1/4-20. CA the holes, then re-tap.
Attached Thumbnails Click image for larger version

Name:	Ge94593.jpg
Views:	11
Size:	42.0 KB
ID:	1202338   Click image for larger version

Name:	Ql35195.jpg
Views:	8
Size:	33.7 KB
ID:	1202339   Click image for larger version

Name:	Ch97349.jpg
Views:	12
Size:	34.3 KB
ID:	1202340  
DonStegall is offline  
Reply With Quote
Old 05-20-2009, 07:04 AM
  #5  
DonStegall
Thread Starter
My Feedback: (1)
 
DonStegall's Avatar
 
Join Date: Aug 2005
Location: MonroeNorth Carolina
Posts: 1,840
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: The Smasher - Building the Wood V-Tail

The support holders are glued to the base. I just use TiteBond and make sure that any excess is removed. I use a chisel. This is important because the supports will be right against the holder and they need to contact the base for correct registration.

The last picture is a set of the supports. These are some I had already made. I'm going to show you how to make 4 identical pieces, because these ARE critical in terms of the angle.
Attached Thumbnails Click image for larger version

Name:	Pm34747.jpg
Views:	11
Size:	40.5 KB
ID:	1202341   Click image for larger version

Name:	Cy77611.jpg
Views:	17
Size:	41.7 KB
ID:	1202342   Click image for larger version

Name:	Gl21265.jpg
Views:	10
Size:	37.4 KB
ID:	1202343  
DonStegall is offline  
Reply With Quote
Old 05-20-2009, 07:57 AM
  #6  
wrstew
Member
My Feedback: (30)
 
Join Date: Dec 2003
Location: Beekmantown NY
Posts: 51
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: The Smasher - Building the Wood V-Tail

Guys- on printing the pdf files Don has given us (thanks Don!~) don't do what I did, the default setting on my printer was "fit to page" and the scale came out wrong.  Select no scale, or whatever your printer has for "don't mess this up!"        by " Wrong Size, Again"
wrstew is offline  
Reply With Quote
Old 05-20-2009, 01:16 PM
  #7  
DonStegall
Thread Starter
My Feedback: (1)
 
DonStegall's Avatar
 
Join Date: Aug 2005
Location: MonroeNorth Carolina
Posts: 1,840
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: The Smasher - Building the Wood V-Tail

I have added a warning on the page on my web site about using Scaling: None.

I have also updated all of the drawings with a reference measurement.

I now have a new stab [link=http://www.houseofpylon.com/Q500/Smasher/WoodVTail/V_Tail_Stab2.pdf]V_Tail_Stab2.pdf[/link] without the points. As well as the original stab [link=http://www.houseofpylon.com/Q500/Smasher/WoodVTail/V_Tail_Stab.pdf]V_Tail_Stab.pdf[/link] on the page.

Advanced testing on the Smasher has shown that it is indeed very clean, but that the pointy tips on the composite tail MAY be a source of slight drag over some magic MPH number.

Assembling and shaping the pointy tips is extra work. So I'm going to start making wood tails without the points because I can make the tails faster and more consistent. I still think the pointy tips look cool.
DonStegall is offline  
Reply With Quote
Old 10-13-2011, 02:22 AM
  #8  
goplaneman
My Feedback: (175)
 
goplaneman's Avatar
 
Join Date: Nov 2003
Location: Mackinaw, IL
Posts: 445
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: The Smasher - Building the Wood V-Tail

Don,
Do you still have the .pdf for download? the linls no longer work.
goplaneman is offline  
Reply With Quote
Old 10-13-2011, 06:22 AM
  #9  
GSJames
 
GSJames's Avatar
 
Join Date: Nov 2003
Location: Weatherford, TX
Posts: 579
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: The Smasher - Building the Wood V-Tail

I don't believe that Don is currently active. Attached are the files.
Attached Files
File Type: pdf
Zx72282.pdf (10.0 KB, 25 views)
File Type: pdf
Sn40047.pdf (1.1 KB, 18 views)
GSJames is offline  
Reply With Quote
Old 10-13-2011, 06:52 AM
  #10  
goplaneman
My Feedback: (175)
 
goplaneman's Avatar
 
Join Date: Nov 2003
Location: Mackinaw, IL
Posts: 445
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: The Smasher - Building the Wood V-Tail

Thank you so very much.
goplaneman is offline  
Reply With Quote
Old 10-13-2011, 05:12 PM
  #11  
sahartman21
 
Join Date: Nov 2007
Location: Fritch, TX
Posts: 2,060
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: The Smasher - Building the Wood V-Tail

My Smasher flies great. I am currently flying powering mine with a Jett 426 engine.

Mine ended up needing some nose weight to balance. I think this was due to a long tail moment and the lightweight 426 engine.

If you plan on using a 426 or other lightweight engine, then a lightweight tail is required to avoid nose weight.
sahartman21 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