Posts: 737
Joined: 2/8/2002 From: Houston, TX, USA Status: offline
Me too. My Pepino Waco is all fixed and ready for flight test. Weather has not been quite good enough for first flights. I hae been taking up a few others in the meantime.
Posts: 3237
Joined: 12/18/2001 From: Arlington, TX, USA Status: offline
Bedford, I sure would like to see some pics of your plane. How about post some or get a friend with a digital camera to do so. There are so few pics of the Pepino Waco that I've been able to find.
Posts: 3237
Joined: 12/18/2001 From: Arlington, TX, USA Status: offline
I agree, post the pics here.
I am still in the process of re-engineering the Waco. I'm now working on the formers. I'm using the width of the formers as is. However, I'm rescaling the height of the formers to fit the side view of the plane. I decided to do this because after I studied the fuselage that my friend gave me I came to the conclusion that there were a lot of errors. My friends formers were cut exactly by Pepino's plans. Here are a couple of examples of what I've been doing.
I noticed when I printed the drawing after posting it on RCU that it is a little small but could be scaled up as required by using a drawing program. I'll print the formers the correct size, cut them out, and tack glue them to balsa to be cut out.
< Message edited by Big_Bird -- 3/4/2007 7:04:55 PM >
Posts: 737
Joined: 2/8/2002 From: Houston, TX, USA Status: offline
OK, guys bare with me here. I have not posted pix before and a quick look at how long I have been around will tell you just how complacent I have been about trying it. Thanks for getting me off my duff. By the way, complete assembly took about 10-12 minutes.
The credit for building this bird goes to a local, now retired modeler, Tom Clark. He did a very good job with it. I have had to make a few modifications since I acquired it, but mostly minor. It is covered in Monocote with the fiberglass parts in a not-so-nicely matching paint. Flying wires are of monofillament, which are not great to look at, but may work out in use ... we will see. As indicated above, this bird is motivated by a Quadra 50 of unknown history (but has good compression). If power is at all wanting, I will cajole a club mate out of his idle G-62 to replace it. I have a 1.2# steal plate on the firewall for balance. I can afford the heavier engine.
Our club has a commemorative event next month and I hope to be able to fly it then. After flight testing beforehand, of course. I will let you know how that goes.
Posts: 3237
Joined: 12/18/2001 From: Arlington, TX, USA Status: offline
That's a very good weight. My Bucker Jungmeister with 86" wingspan weighs 27 pounds. It has a Sachs 4.2 for power. Here is a picture. The last couple of days I have been cutting out formers. F7 - F13 are finished.
Posts: 737
Joined: 2/8/2002 From: Houston, TX, USA Status: offline
I saw your BJ at the B-17 meet last year. An excellent bird!
The big day is coming very soon. I have often lived by the principal the a new aircraft hangs in the shop until I am tired of looking at it, then I take it out to fly. I believe I have about gotten to that point. Unfortunately, we have got the rescheduled Space City Cross Country coming up next month and I am going to have to start tuning up for that. Oh, the pressures of RC life!
Posts: 3237
Joined: 12/18/2001 From: Arlington, TX, USA Status: offline
I cobbled together my version of a tail wheel assembly and I thought you might like to see it. I brazed (very high temp nickle/silver) 5/32" ID chrome-moly tubing to make the frame. Three of the other main parts came from my defunct Corsair Robart tail wheel assembly.
All of the formers have been cut and now I need to make a $140 trip over to Lone Star Balsa to get the rest of the supplies. I hope to get that done this week.
Bedford is this the big weekend?
< Message edited by Big_Bird -- 3/17/2007 3:13:41 AM >
Posts: 331
Joined: 9/29/2002 From: St. Catharines,
ON, CANADA Status: offline
Good looking Tailwheel Big_Bird. Curious to know what stock you'll use for the fuse and where you sub for the spruce. Also did you use the rubber O-rings as suggested on the plans or a spring?
Posts: 3237
Joined: 12/18/2001 From: Arlington, TX, USA Status: offline
quote:
ORIGINAL: SuperCub Man
Good looking Tailwheel Big_Bird. Curious to know what stock you'll use for the fuse and where you sub for the spruce. Also did you use the rubber O-rings as suggested on the plans or a spring?
Thanks. For the longerons, I'll use basswood from the firewall to just behind the rear cockpit. At that point I will splice on 3/8 sq medium balsa for the run to the tail. Most of the cross bracing will be 1/4 x 3/8 balsa. I'll use the 1/64 ply circles for joint reinforcement. All of the stringers will be 1/8 x 3/8 medium balsa. The spars in the wings will be basswood. The wings will be one piece. Only balsa will be used in the tail structure. With all of the longerons, braces, and stringers in place the fuselage will be really stiff and strong without the added weight of spruce.
I did not use the o-rings but used the spring loaded shock absorber from the Robart landing gear.
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RE: Jim Pepino's YMF-5 Waco - 
