I have my new Twist all together now and am working on balance. I moved the battery as far forward as I could but it's still tail heavy. I need about 6 oz in the nose. I mounted the Super Tigre .51 engine according to the manual with the face of the drive washer 4.25" from the firewall. There is room on the mount to position the engine farther forward. Is this an option or is the 4.25" dimension critical?

Any other ideas to shift the CG forward?

Thanks.

I had a Webra .50 on mine and needed to move it farther forward. I don't remember how far though, but the prop washer was about 1.5" from the front of the plane. Before you do that though try to get the battery in the tank compartment (mine was under the tank) and right up against the firewall. Also, I don't want to tell you where to set the CG but I had mine almost an inch behind the recomended point (I started about 1/4" behind it for the maiden and keept moving it back until it flew inverted hands off).

I hope this helps

rcjon, it's fine to put it out on the end of the beams. On my 4*60, I built extensions to locate the engine waaaay out to keep from using weights. It flies fine.

No way I can get my battery in the front compartment. I remounted the engine and I'll see where that gets me. The books says 4-5" behind the leading edge. I'm shooting for the middle of that range as I'm new to this radical type of design.

Thanks for the info.

TimC,

I remounted the engine out on the end of the beams as you suggested but I haven't rechecked CG yet.

And if I ever wreck this plane, I'll blame you

Thanks.

rcjon, when I was assembling my Twist, I took a chance and installed my four-stroke right at the 4.25" mark. When I finally checked the c.g., it came out right at 5". It doesn't seem too tail heavy at 5". If yours is at 5", I'd go for it. And if you wreck it, I'll buy you a new one..................................just wait down by the mailbox for it.

After putting the 51 at the end of the beams and adding 2oz of removable weights in the nose, I got CG just ahead of the 5" mark. I hope to maiden on Saturday.

Another question, if I can state it clearly. The wing is symmetrical in profile (looking at the end) narrowing toward the trailing edge, but the aileron has a flat top and a flat bottom. When trimming the ailerons, do you match the top of the aileron with the slope of the top of the wing, the bottom of the aileron with the slope of the bottom of the wing, or just split the difference? It looks wrong in all three configurations.

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Move the stick to the right to bank to the right, move the stick to the left to bank to the left, except when it's the other way around.

rcjon, neutral is when you stand in front at the edge of the wing, and everthing lines up. The centerline along the outer edge is the center line of the aileron. ======------- Mine lands a little better with both ailerons up just a tad at neutral.

it worked very good for mine (real tailheavy with a .40) by taking the fuel tank out if you already built it and cut the wood support under the fuel tank and placing the battery there w/ a lot of foam rubber to keep it secure, then put the fuel tank back and it doesnt move at all. I didnt think id get it in there, but it does with an average 5 cell flat pack.

Thats what I was talking about I had a AAA pack though so I did'nt have to do any cutting.

RCjon-- Don't worry about this being a radical design....lol. It will be easier to fly than your first trainer and you will also be able to fly it much slower.

>>RCjon-- Don't worry about this being a radical design....lol. It will be easier to fly than your first trainer and you will also be able to fly it much slower.<<

I have an Ultra Stick, a Tiger Stick and an AT-6, so I hope I won't have too much trouble. Those stubby wings and big control surfaces on the Twist look a little intimidating. I have the low rates down to about 50% with some Expo, so I'm hoping it won't be too twitchy.

Dang novabill, you're going to have someone just starting out buying a Twist![X(]

I learned to fly on a Dazzler and SPA3D lol. rcjon....I think the Twist will be easier to fly than any of those planes you described (alot easier). I taught my 9yr old and 14yr old to fly on mine.

DISCLAIMER!!!!!!!!!!!!!!!! DON'T TRY TO LEARN HOW TO FLY WITH A TWIST 3D

There, I'm covered

Boys or girls? I'd hate to be outdone by a 9 year old girl. :>

LMAO......It was a boy

Good. I don't mind being shown up by a 9 year old boy :>.

Did the maiden on the Twist today after our club's Toys for Tots fly-in (and what a great turn-out of pilots and spectators we had!!).

I had set high rates at maximum throw and low rates for aileron, el, and rudder at 50%. The Super Tigre Engine ran great without adjustment of the low end. I pointed her down range and nailed it. Twist went vertical and I pushed the nose down. Got her flying and gave her about 3 clicks of down elevator and she was hands-off straight and level at about 1/2 throttle. Flew around just fine and did some high-rate stuff. Took two or three passes to get her on the ground though. I had to fly her down and grease her in with a little power, otherwise she just went right on by! An experienced flyer suggested putting a couple of washers between the top engine mount screws and the firewall to give her just a bit of down thrust. What do you think about that?

[sm=thumbup.gif]

I wish I could have been there rcjon. Maidens are always exciting (planes at my age). The added down-thrust should eliminate the down trim on your elevator. I remember flying right on by the first time I tried to set my Twist down.

I used a OS 40 fx and mounted it .25 inch back from the ends of the rails....I installed a 6 volt 1400 mah battery on top of the fuel tank next to the firewall...The CG is at 4.5 inches.

It won't hurt to put 1or 2 washers in there. I always had trouble getting mine down as well.

I told you it was easy to fly