Duet Beta Build - RC Groups
Shop our Airplanes Products Drone Products Sales
Thread Tools
Sep 16, 2011, 09:46 AM
Hot Dawg Glider Pilot
schrederman's Avatar
Build Log

Duet Beta Build


My kit arrived yesterday in fine shape. The wood is VERY nice, and the plans are nicely done. This will be a nice model!

I'll be starting this build this weekend and I have a request... If you wish to comment, please wait until the build sequence is completed. That way, other builders will not have to sift through the oooooohhhs and aaaahhhs to get through their build. However, if you have a question about something that isn't clear to you, post away!

I'm at work as I type this, so no pics until this evening...

Jack Womack
Sign up now
to remove ads between posts
Sep 16, 2011, 10:31 AM
Kurt Zimmerman ≡LSF 4461≡
kzimmerm's Avatar
Hi Jack... Look forward to your building log.
Kurt
Sep 16, 2011, 01:35 PM
≡LSF8067≡
dwells's Avatar
Sweet!
Sep 16, 2011, 07:45 PM
who has rabbit ears down
Captain Canardly's Avatar
I'm watchin' Too!
Sep 16, 2011, 09:15 PM
Hot Dawg Glider Pilot
schrederman's Avatar
Uh... did you guys read the first post?
Sep 16, 2011, 09:50 PM
The King Moonracer of balsa.
Windependence's Avatar
Jack,

I was wondering if, throughout your build, you could try to think of the perspective of a new builder and comment on or clarify steps that might be confusing. Experienced builders, like yourself, can easily look at the box of parts and intuitively know how it will go together, new builders rely much more on the instructions. Something as simple as mistaking a strip of balsa for a basswood spar strip could make for a doomed build. That type of feedback would help people here and would assist Mark in fine tuning the directions.

Wayne
Sep 16, 2011, 10:53 PM
Hot Dawg Glider Pilot
schrederman's Avatar

Kit Pics


OK Sports fans... Here it is! The wood is nice and there are lots of laser-cut parts. So, here we go, on my first 2-meter glider build...

Please remember that this is a beta build, so some of the parts may change slightly, and your kit in the future may not look exactly like this one.
Sep 16, 2011, 11:07 PM
Hot Dawg Glider Pilot
schrederman's Avatar

A few more...


And hopefully tomorrow night, I'll start the wings. This wing is undercambered, so some shimming of the trailing edge will be required, like building free-flight gliders when I was a kid...

Nice job, Mark!

Throughout this build, I will try to keep the explanations and directions aimed at the less-experienced builders in the group, as Wayne suggested.
Sep 17, 2011, 10:35 PM
Hot Dawg Glider Pilot
schrederman's Avatar
OK gents... I had forgotten that you needed to type something in to subscribe... my apologies. Subscribe away...

I'll do this thing in sections and post an entire section at once... By doing so, we will be able to sift through to the build much easier.
Sep 17, 2011, 11:52 PM
Balsa + glue + bluesky= fun
leaktech's Avatar
Quote:
Originally Posted by schrederman
OK gents... I had forgotten that you needed to type something in to subscribe... my apologies. Subscribe away...

I'll do this thing in sections and post an entire section at once... By doing so, we will be able to sift through to the build much easier.

Don't need to post to subscribe. Click "Thread Tools". Sorry for the post.
Sep 18, 2011, 09:40 PM
Hot Dawg Glider Pilot
schrederman's Avatar

Let the games begin...


Ok, we're starting with the wings. That's where I always start.

Many of you are experienced builders and will not need the level of detail that I am going to provide. Many out there in IP Land need a lot of help, so I'm going to make this as detailed as possible for their sakes.

I am starting at the tip panels and the first thing I noticed is how deeply notched the trailing edge is. Also, there is a 5-degree angle forward sweep in the trailing edge, so these notches have to be cut on that same angle. The ribs are 3/32" balsa so the notches have to be the correct width... what to do!?!?

I made a template for marking the trailing edge so I could have accurate rib notches. However, we'll do this a different way for the main panels... more on that later.

Here's what the template and trailing edge look like...
Sep 19, 2011, 02:15 AM
Registered User
Jack,

Does the kerf of the saw take out the 3/32" or do you need 2 parallel cuts? Do you have a pic of your saw? Do you free-hand the cuts or use a jig? (just a little more info for any newbies, or oldbies - ). Thanks.
Sep 19, 2011, 09:06 AM
Hot Dawg Glider Pilot
schrederman's Avatar
The slot requires 2 cuts. After the first one, you need to be careful with the second to keep it accurate, because the blade wants to drift toward the first kerf. I use the jig to mark the cuts and I mark them deeply enough to show any inaccuracies in the slot. I have a flat, fine rasp that is only 1/16" thick. It allows me to clean up the slots for a perfect fit. Trying to use the jig with the saw would wear out the jig quickly, and the slots would get wider with each pass.
Sep 19, 2011, 07:36 PM
Registered User
Mark Miller's Avatar
Just an FYI for you all.... the reason for the deep slots is that the rear of this airfoil is quite thin. In the prototypes I used 3/4" TE stock and things were to flimsy back there. I left the ribs the same but went to 1" TE stock with optional scallops on the version Jack is building. It should add a lot to the structure back there.

Mark
Last edited by Mark Miller; Sep 20, 2011 at 12:55 PM.
Sep 20, 2011, 09:23 AM
Hot Dawg Glider Pilot
schrederman's Avatar
FYI... I have a really bad cold right now. I won't be doing much on the Duet until I feel better. That's probably gonna be next week... Sorry...
Last edited by schrederman; Sep 21, 2011 at 09:04 AM.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log Build Log - STARFIRE! Mc Clain Wing Cores 48" Beta Build pval3 Flying Wings 558 Aug 30, 2017 11:11 AM
New Product Scale Military UAV / Drone Beta-Kit Build/NOW WITH VIDEO! pattypilot Electric Warbirds 140 Mar 01, 2012 01:28 PM
Discussion Isthmus Models Duet Beta Build StevenatorLTFO Sailplane Talk 158 Sep 16, 2011 09:34 PM
Discussion Rollason Beta quick-build Sopwith Mike Scale Kit/Scratch Built 74 Jul 27, 2011 04:45 PM
Discussion Kit/Plane fun build contest-Hawker Typhoon beta build baldguy Scale Kit/Scratch Built 268 Oct 08, 2009 12:58 AM