Posts: 14
Joined: 11/16/2003 From: Portland, CT, USA Status: offline
Chip,
I received my Double Vision last Thursday and have been going through the Instructions on CD-ROM. I have some questions.
1. The Motor Mounting Template that is posted on your website is different then the one on my CD-ROM. It doesn’t look like I will be able to use the 2.5inch stand offs that came with my DA 50R and Slimline Pitts Muffler? Do you happen to know what the length I will need to cut them at?
2. One of the procedures in the Manual says you need to relocate the rear stabilizer anti rotation pin by using a round file by 1/8 inch. The picture above this caption seems to show the location to be correct already? Do I need to perform this procedure? What is the correct measurement of this hole from the bottom of the fuselage?
Posts: 719
Joined: 12/7/2002 From: Sierra Vista, AZ, USA Status: offline
The short standoffs are the omes that are used on the DV, and I believe you can still use the slim line muffler. Yes the antirotation pin needs to be brought down about 1/8th of an inch on ALL of the planes. It is a simplle fix that will just make it so your elev. trim will trim neutrel. It is not that critical as far as getting it to the thousandths, just make sure to keep it equal from the bottom of the fuse
Chip
quote:
ORIGINAL: OnEdge
Chip,
I received my Double Vision last Thursday and have been going through the Instructions on CD-ROM. I have some questions.
1. The Motor Mounting Template that is posted on your website is different then the one on my CD-ROM. It doesn’t look like I will be able to use the 2.5inch stand offs that came with my DA 50R and Slimline Pitts Muffler? Do you happen to know what the length I will need to cut them at?
2. One of the procedures in the Manual says you need to relocate the rear stabilizer anti rotation pin by using a round file by 1/8 inch. The picture above this caption seems to show the location to be correct already? Do I need to perform this procedure? What is the correct measurement of this hole from the bottom of the fuselage?
Posts: 14
Joined: 11/16/2003 From: Portland, CT, USA Status: offline
Just got off of the phone with Desert Aircraft they currently do not have any 1 1/4 inch stand offs for the DA 50R in stock. But they could have them as early as the 20th of May. He was unaware that this was the stand off being used with the Double Vision.
Posts: 5833
Joined: 7/16/2002 From: Ashland, KY, USA Status: offline
Here's a pic of the needles... you can see how even 1/8" shorter would make it difficult to reach the rear neelde, and 1-1/4" standoffs alone would put them completely behind the firewall...
Posts: 5833
Joined: 7/16/2002 From: Ashland, KY, USA Status: offline
I fogot to mention that the above spacers help minimize the amount of the firewall you have to grind away for muffler clearance.
Now the anit-rotation pin...
I don't ahve a manual so here's what I did:
1) Cut away the covering from the bottom of the fuse just under the anti-ortation pin area.
2) carefully pry away the little square pin doubler with a sharp tipped flathead screwdriver
3) sand any residual wood/glue away with a file (I used a piece of 1" wide X 6" long ply with sandpaper glued to it.
4) Looking from the outside again, make a mark 1/8" below the BOTTOM of the existing hole
5) rattail file the hole down til it JUST touches the line you made, then install the pin and stabs. pushing the stab down into the new slots you made, measure the center of the leading edge to the bottom of the fuse and make sure both sides are equal... if not... file the high side a touch.
6) Make up two new alignment squares 1" square with 9/64" holes in the centers and apply 30 minute epoxy to one side of each square.
6) Apply vaseline lightly to the antirotation pin
7) Slide the pin into one side of the fuse and then slide one "new square" onto the pin inside the fuse with the flue side toward the fuse. Then slide the other square on the pin to with the glue facing it's fuse side, then slide the pin the other side of the fuse.
8) install your stabs then make sure the pin is pushed toward the bottom of the fuse.
9)Place a couple strips of tape on the leading edge of the stab and onto the fuse to hold it in position.
10) Look inside and press the squares firmly against the fuse sides, I used an open ended wrench to press it.
Double check the stab is still at the "bottom" of the slots you filed then let it set up.
I wouldn't use anything but 30 minute epoxy because if you got hung up somewhere you'd be pitchin' a fit...
Here's a pic of what you'd be lookin' at:
< Message edited by Maudib -- 5/17/2004 9:48:26 PM >
Posts: 5833
Joined: 7/16/2002 From: Ashland, KY, USA Status: offline
Also something I did (not run by Chip)...
I cutout two bays in the underside of the "engine box" to enable easier access to the area... It will assist in placing the engine bolts, accessing front part of the tank area and installing of throttle/choke linkage...
I also intend on installing my ignition and battery inside the fuse near the back of the firewall.
NOW... I did notice that the nose area relies on this solid piece of ply here to help with tortional strength, so I intend on applying some 1/2" tri-stock to the formers inside and placing a 1/32" aircraft ply cover over the openings with several screws to strengthen it back to par.
This is my OWN mod and not necessarily endorsed by Chip... use at your own risk... however, I have no qualms whatsoever in this process. The engine box should be stronger than before and easier to get into if need be all without adding much weight if any:
< Message edited by Maudib -- 5/17/2004 9:15:21 PM >
Posts: 673
Joined: 1/22/2002 From: Omaha, NE, USA Status: offline
You know guys I got to tell you I have been flyiny my DV for about 2 months now I have not really seen a need to do all the Mods to the stab, but I guess to each his own. Let me know how it flies then I may also consider doing this
Posts: 14
Joined: 11/16/2003 From: Portland, CT, USA Status: offline
rgreen24
Did you use a DA50? How did you mount your throtle and choke servos in your Double Vision? Just wondering how you got the pushrods all the way up to the firewall? Could you provide some pictures?
On edge I took a 256 rod and sleve and went through the front cabane hole so i have a manual chokeand i mounted my thotel by my ruder servo on one side hole
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New Double Vision Instruction Questions ??? - 
