Deadeye

Hey guys, I've been at it again. It's built in the tradition of the Cor-Star, ie; I used a side template of my LT-40 as a starting point, used a blasa/lite ply/aircraft ply fuse insert, poly glue, etc. I slid the wing back 1 inch and added an inch to the nose length, otherwise it's an exact profile copy of the LT-40. The Tourmaudo came out to be only 8 oz heavier than the LT-40 (extra weight in the wings again!). I'm using a OS 60 FP for power, with a 12X8 prop. Has plenty of poop, almost unlimited vertical. The things tail slides like nobody's business, on Saturday in front of witnesses I did at least a 40 footer. Lands a tad bit hotter than the LT, but otherwise flies just like it.

I hand cut the fuselage graphics, but I must give credit to Kelly and Sheri Fowler of KF Design and Performance (Conrad MT) for the wing and tail graphics. Underside is thick red stripes for contrast. I love this plane!

Captain351

I would never have thought it was Coro if you haden't told us.

Deadeye

Thanks! That is exactly what I was after.

Madd_Maxx

Deadeye:

WOW!! That is one awesome looking spad you got there....I would have never guessed it wasn't balsa. Any chance of a set of plans or a few during build pics and some measurements for it?

Madd_Maxx

Deadeye

Ask and you shall recieve. I didn't take a bunch of construction, because it is built so similar to the Cor-Star 60, and many of things would've been redundant.

Deadeye

13 inch chord, 68 inch span (just like the LT-40). Fuse is 54 inches from front of cheek, to back of elevator. AUW is 8lbs, 3 oz. Lt-40 is 7lbs, 11 oz. For plans, find an LT-40, and using heavy paper, make a template of the side. Refer to my Cor-Star thread for techniques, it's that simple. I started this on a Monday evening, and flew it 9 days later (without graphics). I only worked on it 2 hours for 4 evenings, and about 4 hours on Sta, and 4 hours on a Sunday. Now that I have my methods perfected (Cor-Star thread), they just about build themselves.

Chunky C

Most excellent! I like the fact that she's a tail dragger. I don't recall ever seeing a tail dragg'n LT-40. (the LT is a very popular plane in my club...)

Keep up the great work.

cc

Deadeye

Last ones

Quicker

You are a building master.

lecrote

My Feedback: (1)

Hi Deadeye,

How do you buit your vertical and horizontal Stab???

Is it only 2mm folded???

Very nice bird

Thanks

Dan

DeBearSteve

Extremely nice job. It reminds me of a Telemeister.

DeBear

beardking

My Feedback: (4)

That's it, send me one. I've always wanted a good trainer that I could just beat around with and not worry about and that on is it. Send it on over.

Deadeye

Hi dan, the wing is 3 mil, and the tail feathers are 3 mil folded over. Check out my [link=http://www.rcuniverse.com/forum/Cor%2DStar_60_Version_2%250_plans_and_pics/m_1201120/tm.htm]Cor-Star[/link] thread for techniques. The Tourmaudo is built just like the Cor-Star (in fact, the tails are the same, only no split elevator, and the rudder chord is longer).

lecrote

My Feedback: (1)

Thanks Deadeye

Another question from the cor-star instruction...

You said that dremel is good for removing one side of the flute...

Which dremel bit you used???

Thanks

Dan

Deadeye

Sanding drum, either tapered or perfectly round, whichever you are more comfortable holding. I also had success with a razor plane, but have since used just an exacto. An exacto makes less mess, but takes practice to get the flutes flat without cutting through to the other side.

Zombie

A real nice build, Deadeye! Thanks for inspiring us!

mikenlapaz

Randy,
In the time since this build and your Cor-Star thread have your projects given you any ideas as to maybe just how you might lighten the plane any.
I'm finishing up an ARF LT-40 with TT46 and had already made tracings and measurements in anticipation of building SPAD sister. Even bought a spare TT46 for power.

Again your building skills truly impress me.

Deadeye

Mike,
The biggest thing with weight seems to be in the wings. I can't get 2 mil around here, so I haven't been able to try that in a wing. I have two hybrids that used crashed balsa wings. Both of those planes came in at 7 pounds or so. I've been looking at using foam core, and plan on going that route for the next one I have lined up. However, this goes against the whole SPAD thing. I used a hole saw in the balsa skeleton on one of my last ones. Saved at least 6 oz. It seems like every one I crank out comes out just a little bit lighter. I've re-engineered a few things like the LG and wing blocks, making them lighter and stronger. I also started using the Dubro 60 size landing gear, which is considerably lighter than the aluminum gear. Pull-pull on the rudder also saved the weight of the steel 4-40 pushrod I used the purple Cor-Star.

The very first Cor-Star I built was in the 9 pound range,, and I've managed to shave considerable weight since that time. I am always open to ideas, though, so if you have any please don't hesitate to share.

Smooth Spanky

Wow, nice job Deadeye, that thing looks sweet. I had a balsa LT40 years ago and loved it...I'd still have it if it was coro!!

mikenlapaz

http://www.hobbypeople.net/gallery/877759.asp#More Main gear?

Do you have the weight number on the 3 mm so we could calculate the difference if 2 mm was used?

Which of you threads best covers how you power the ailerons?

Deadeye

Mike, no weight comparisons, sorry. That gear looks fine. The wing servos are a piece of cake. I put the servos about half out on the ailerons, cut the coro to the servo shape right behind the spar, and poly glue 1/8 aircraft ply strips inside the wing so the servo screws have something to grab. Then, just simply run your linkage, and feed the aileron wire (and extension) to the center of the wing. Easy cakes!

gautam.rai.malhotra

it looks better than the LT-40 , good job man.