Well,

I finished the Modeltech Extra 300 ARF earlier this year and it has been to the field a couple of times. It flys awesome and will do about anything you want it to. I put an OS 40 FP on mine and that thing would hover pretty good.

However, a couple of weeks ago I took it to a local funfly. On the first flight, it was flying great, engine sounded great, was handling well. After about 10 minutes of flying, I came around for an approach to land about that time it twitched left, then right, then rolled off to the right at about a 75 degree angle at 3/4 throttle into the ground. Needless to say, it fits in the box it came in again

ksflyer,

Sorry to hear about your plane.
I've been thinking about getting one for my TT Pro .36 . I was wondering if you think this would be enough engine for this plane? Did you run the stock exhaust or a pitts muffler?
I have looked up their instructions and it shows to mount the engine at a 45 degree down angle. I was wondering if the engine could be mounted on its side with the muffler out the bottom or would the muffler hit the fuselage?
If there is anything you would do different when assembling this airframe please let me know.

Thanks, Barry

A TT36 will be more than enough power! This little plane is great for the money - I put my Webra 40 Speed on it. talk about a wild ride!

I would not change the mounting pattern of the engine because the exhaust comes down the middle of the bottom of the fuse. Here's a pic of my setup, right before I sold it.

I just bought an OS 32 and contemplating getting another Extra for that. The Webra was fine but I feel a light, strong engine would be best suited to this airframe.

Regards,
swill

i am considering this plane. what servos are you guys using and what size battery??
i thinking of using either a 40 la or a 40 fx, what do you guys think??
thanks.
tony

My plane had the following setup.

OS 40FP with Pitts muffler 10X4 APC prop
4 - Hitec HS-300 Standard Servos
600 Mah Nicad Battery
Standard Hitec 7 channel receiver.

I never weighed it's flying weight, but the OS 40 would hover the plane. An OS 32SX would be AWESOME!! Try to build it as light as possible and then put a light beefy(is this possible) motor in it.

I have a friend who has a Magnum XL25 motor in his and it flies it great. I just had the OS 40 laying around and wanted to over power the plane.

The only bad tendencies I saw with the plane was that at low speeds, it would tend to snap over on up elevator movement.

Also, I put tons of throw in the rudder and when applied at high speeds, the plane would actually almost snap by applying full rudder.

Other than that, the plane was awesome. Fly it all the way to the ground when landing.

Thanks for your information guys.
I think i might have to get one of these. I have the Global Tequilla Sunrise 25 and it has a little too high wing loading . The extra might just be the ticket.

Thanks Again, Barry

ksflyer, how much did your extra weigh with the 40LA?

A Pro36 equipped model will weigh exactly the same, but make considerably more thrust... I was flying my 4lb Uproar 40 with a TT GP-42 (similar to an 40LA in terms of weight, but a bit more powerful) and saw a dramatic difference when I stuck the Pro-36 up front. I'm guessing that if the plane is sub-4.25lbs, you'll likely see unlimited vertical capability with the 36.

I've got one of these, and had an os32sx/macs pipe combo on it. I turned my motor downward to dump the pipe out the bottom of the fuse. I split mine in half on a flatspin/ground encounter, and rebuilt it with none of the plastic. I also sunk a 720 nimh pack in the tail, and reinforced the tail with 4/40 rods (had them layin around, and needed the tailweight), and fiberglassed the wing joint all the way around.. Mine was under 3 3/4 lbs, and flew with an APC 10/4 or 11/3 prop on 10-15%nitro. Performance was ballistic, and it would do the coolest tumbles.

I used standard servos all the way around, and a standard futaba receiver.

I still have mine, but broke the fuse at the wing mount on a hard flameout landing. It's repairable, so I may put it back up in the air again. I thought I had a buyer for mine, but I've not heard anything back from him in a while.

Heres a recent pic of it, without the cowl.

Steve

I've got a tt36 in my magic that I'd put in it in a heartbeat. It's got a great power/weight ratio, and will fly all day long on less than 24 oz of fuel. It keeps callin me to rebuild it, and make it rise from the ashes once again. And I do want something that will tumble this good. Hmmmmm, maybe I know what Ill be doin this weekend.

BTW- if you use a small hayes round mount on it, the os32, tt36, and just about all of the other small engines are interchangable. I took the mount off the extra, and bolted it straight to my magic, and mounted the tt36 to it.

Heres a pic with the cowl on.

Steve

Myself and another guy at my field have been running O.S. 40 LA's and they have worked very well. Mine has been in for about a year and a half. Haven't had any problems and the light LA works well. Just wish I could easily fit some taller gear so I could keep running an 11X4 prop. Very good performance with that prop but dings bad or breaks on landing once the gear flexes at all.

I know what you mean. Even with a 10X4, I was cutting the grass We paved our runway earlier this year, you can imaging rolling up to it for the first time, begin about 2" taller! My prop got a little shorter!

I always took off and landed in the grass!

we fly off of grass, and i had to bend my gear in sooo tight after just about every flight. I didnt fly with the wheel pants on, and went to 2 inch foamies, or 2 1/4. That helped alot, and held up well under normal landings.

give that a shot.

steve

I was wondering if i mounted the engine horizontally with the head out the side would the stock muffler on a TT 36 clear the fuselage?
I have mounted engines inverted before and it seemed to be allot of trouble to start and tune.
I realize the engine is not mouted completely inverted, does this work better than inverted?

Thanks, Barry

my motor seems to be at just the right amount of angle to keep from having any of the inverted motor problems. Only had to lean the low-end a little bit.

I made the maiden flight on mine yesterday.
OS 32F
APC 9x6
slimline pitts muffler

I mounted the engine with the cylinder horizontal and the exhaust going down. The cowl had to be relieved slighty for the muffler chamber and opened for the head and needle valve. I was able to balance with no extra weights.
It climbed out strong at half throttle, made two ovals around the field and then landed. After seeing some stains silouetted on the inside of the cowl, I checked the engine and found oil and metal shavings around the drive washer. Looks like the front bearing is gone soooooo... picked up a 32SX at the LHS and just finished mounting. Will fly again tomorrow!!!

Would a TT GP .42 fly this okay? its this or a hobbico spectrum...What should I do?

Would the GP-42 also be going on the Spectrum? If that's the case I'd say go with the little Extra. The GP would give marginal performance on the Spectrum. It comes out weighing a bunch more than the Extra (especially if you intend on using retracts) which means that power would be marginal with the use of that engine.

finished my baby! she came out to 3 lbs. 2 ounces with no fuel, but all else. Hope it flies as well as it looks!

I was ( was ) running a tower .46 in mine and it was unlimited vertical all I can say is- WOW-!! was doing a low inverted pass and pulled out the wrong way and clipped my wing on the ground and took it home in toothpicks But I've got another one sitting right next to me ready to be put together . with this set up it weighed in at 3.75 lbs. i was using a 10x7 and 11x6 prop and had to keep bending the landing gear to give me proper groung clearance, luckily I have blacktop to take off of

How is this plane at low speeds? How does it compare to Tequilla Sunrise?

I had a Tequilla Sunrise ARF (25 size) with a OS .25 SX and flew like a lead and landed way too fast. I ended up selling it. I am not going to perform any hovering or 3D. Just little aerobatic now and then. I have a OS .25 FX which I would like to use.

Thanks.