That's okay, Rumva. Use the .40 and paint those Iowa skies yellow and purple. Jim's from Texas--where they like EVERYTHING big, but don't always get it so.

You'll have a nice, easy intro to the Twist. THEN you can go bigger on your next one, if it suits you.

Jack

I'll bet that ball bearing Webra .40 is no slouch. With say a 11x4 I bet it works fine. I have a Webra .50 in a plane, and it's a keeper.

Jack, Jim has an MDS 48 in his - mine has a magnum 52 xls. Both fly well using apc 12x4 props.

One thing I don't think Ernie mentioned and is advised at the above link: If you plan on off-setting the control horn to remove the differential, aluminum servo arms and ball links are recommended.

Del, only a .48, only a .52!--in a 40 size plane? Ha, ha. I use the OS .61 with a Master Airscrew 13x5 or 13x4. But I believe I began with a Super Tiger .45 (with, after some experience, an APC 12.25x3.75) in my first Twist, then went to an OS. 50, then the .61--and I'm REALLY pleased with it. I also have a Saito 82a on one Twist. I often fly both birds in one fliying session. Love them both.

I guess I'm really a Texan at heart, hm? Bigger is not always better, but once you command the Twist, the power is helpful--especially when you get into trouble, my common circumstance, pushing the Twist, pushing me. Maidening Twist #7 tomorrow. I put a 6 volt bat in this one and can't BELIEVE the power and quickness of the Futaba S3004 servos. Much faster than the 4.8 bats. As much experience as I've had with the Twist, I'm calming the low rates down until I get used to the new power in the servos.

Anyone else try 6 v. RX bats in their birds?

For those interested, I also put in a two clunk system, pressure and fuel lines, plus a filler line and pressure check-valve to see if I can solve the less-than-half-throttle inverted flight to outside loop flame-out problem with the .61. I'll let you know how it goes.

Jack

They would certainly be better. I've now hooked up my ailerons. I did offset them a tiny bit (possibly the correct amount, it didn't look like it needed much) so I figure I'll get away with it. If I were using those giant servo arms though, I would think ball links would be mandatory.

Matthew

The two clunk tank set-up for the .61 Twist with pressure check valve did NOT work. It MUST be that the tank is too far out of line with the carb: raising the tank may be the answer.


All birds home safe.

Jack

Jack, it might be as simple as a return to basics.

Thats GREAT!!!! TimC,,,,[sm=lol.gif] LOLOLOLOLOL

Glad to hear all the birds are home safe Jack, My Twist is almost ready again it might be tough or a very late night Friday to complete the rebuild for a flight on Saturday, but I did get my new needle valve holder today in the mail.. Things are looking Up.. I have to say I re monocoted the yellow and was able to save the pin striping, it almost looks new out of the box again, and much better then the last rebuild, I'm a Happy twister again....

Right, Tim. KISS. Simple. I may just go to the LHS and get one of those old balsa, F-86 style gliders and begin again. But the #7 Twist, maidened today, is perhaps my best-built Twist and flies like a dream, no mean snap right on full up rudder, as with some previous birds. I have no answer for that. I love to scribe squares in the sky, horizontal, half throttle, full up to vertical, full up to inverted horizontal, then that death-defying full up again, which aims the bird at the ground, only to be saved by full up to horizontal. #7 does it with no rudder input to correct for the snap.

I'll see if I can keep #7 whole for a bit.

Going south (600 miles) for a visit wih the grand kids--and to fly with Mike Lucier, whose club, Weak Signals, hosts the Toledo Exposition every year. Great guy, full of information. I'll ask HIM about the flame out problem. I'm sure he'll comment on the bad placement of the tank re: the carb needle on the .61.

Waldo, I do hope that new arrangement works for your resurrected Twist. When I put the .61 in the new bird, it wouldn't turn over. I REALLY put that .61 in the dirt. I bent the connecting rod, I'm sure. I uninstalled the engine and took a hammer to it through the back door, Higley spinner on the concrete. (Yes, I did. A hammer! Down didn't BELIEVE I did.) I ran it on a test stand. Ran like always, tuned just fine. The hammer corrected the bent rod, I guess. It ran fine today--except for the same problem with flameouts going from inverted to outside loops at less than half throttle. We'll see if the bearings last, but no noise yet, no movement fore and aft, either.

I hope you get to maiden your new bird, Waldo, before this weekend. Best wishes.

The Twist is already in the trunk of the Buick for tomorrow's trip. I'm trying to think how I can have my wife drive while I fly the Twist south. Folks would remember a Twist leading a Buick over the Mackinaw Bridge, hm?

Have a great week while I'm away.

Jack

Well have fun wit your Twist in a new area, I myself have never flown a bird while driving down the highway, but we have talked of it many a times, we have sat in the auto plenty of times on some very cold and snowy flying days though with the heater on, and we found it to be most comforting, with the antenna sticking out a slit at the top of the window, I stopped that when one day the bird went over the roof of the car and we all jumped out to regain the site of her, but to no avail, it was already hanging in the backstop fence at the baseball field behind home plate, its hard to jump out of a car that fast with a radio box and control the radio when its stuck in the window, lots of shredded balsa, even pieces that looked like chain link diamonds, [:-] we all wish we saw it hit. I'm sure it was a fantastic site of exploding balsa. another lesson learned that day. [8D] I have to say though, right when the plane got close to the car and finally the view was abstructed, we were all laughing our heads off as 4 of us tried to evacuate the car like it was on fire or something, one thing for sure, this hobby has kept me laughing for years, the stories just seem to get better and funnier as the dumb ideas that come to my head just keep rolling in. Hmmmmm what else can we do. I'm thinking of building a second Twist wing to make a Bipe Twist next.

I know you guys love your 61s, but has anyone put the 65 LA in the Twist? According to this thread:

http://www.rcuniverse.com/forum/m_37...ey_65la/tm.htm

...and this article:

http://www.modelairplanenews.com/cli...60engines1.asp

The LA is both lighter and more powerful. Sounds crazy, but the test results are there.

Right now I'm having real trouble deciding what to put in the cockpit of my Twist. I would do a simple profile pilot of a cartoon character or something, but it just doesn't look right in such a big cockpit. Plus the tint makes any colours look a bit odd. I think I might fit the canopy for now (with screws) and look out for a proper pilot.

Matthew

I've run into a bit of a problem with the engine mounting. My bearers touch the sides of the fuselage right at the front of the nose, and they seem to be a few mm too far apart for my ST .45. Anyone run into this problem? Because the captive nuts are pre-installed, there doesn't seem to be much scope for adjustment of the angle of the bearers.

Matthew

Twist #7 Jack? You must fly them hard and on the edge. Good for you. I always figure if you don't crash every once in a while, you are not pushing yourself hard enough. At under $100 a piece, it is a little easier to justify financially as well.

I had a buddy of mine fly my new/used twist yesterday. He is a very experienced pilot that makes a U-Can-Do .40 do things that blow my mind. He liked the Twist with the OS 61 FX on it. He got it all trimmed out for me, and I took the controls and flew it around 2 mistakes high. I mostly just got used to the feel of the plane, but I did do some tight loops and rolls. I even let him land the plane. There was a good 12 to 20 mph almost direct crosswind at the time, and I didn't want to crash on my first flight. We will save that for later.

What are you guys using for throws on ailerons for high and low?

Adam

Boy I'm posting too much here...

I seem to have solved the problem with the mount by sanding it where it is bolted to the firewall, and then tightening the bolts down hard - I'm getting there.

Another question: did you guys put foam under the tank, as well as around it? The area behind the firewall seems to be designed with space for foam on 3 sides, but not the bottom. If I squish foam under the tank, it will probably end up tilted, which is obviously less than ideal. What did you lot do?

Thanks,
Matthew

does anyone that flat spins their Twist know what the CG is at ? I've move mine so far back I have to land nose up. But it still want flat spin.

Mine will flat spin inverted much more readily than right side up. Don't know why. You might give it a try.

4.75 for my Cg,,,,,,,,,,,, flat Spin Inverted and Right side up, it is easier Inverted though, trying to get to 5.0 but I gave up. I'm happy with the 4.75 and didn't want to add any more weight or put all the radio components in the tail.

My tank has foam on top and the sides and sits flat on the bare platform. No problems and fits like a glove.

Maidened mine tonight guys! Man is this thing easy to fly. It has been windy all weekend, but the wind died just before sunset tonight. The advice given on this thread helped a lot. Keeping some while landing was very good advice. I stuck two landings. I have my CG at 4 3/8, and it was very stable.

Adam

Congratulations on the maiden Adam. It's been windy here too. Much too windy to fly. I loaded up and went down to fly with a friend south of here. It was blowing a gale down there too.

http://www.modelaircraft.org/mag/hur...rmgeometry.pdf

Hey, good find Tim. If you scroll down the page, it does show nicely what we were trying to say.

On the US 60 I am setting up now, I did use DuBro ball links on the aileron and elevator servo arms. This is the first setup I have ever had where you can't feel any slop at all at the aileron or elevator. The ball links do a great job of eliminating the twisting force that you can get on the servo arm just using clevis's. They are a little larger hardware than what we are used to seeing on a 40 size plane but that is okay with me because of their functionality. Of course you still have to have a tight fit where the clevis goes into the control horn or you still will have some slop. (my setup just uses the ball link on the servo arm)

On this US 60, I made my own carbon fiber pushrods and expoxied a short piece of 4-40 all thread in each end. Just a dynimite setup and looks very cool where the carbon fiber pushrod hooks to the ball link. I am using the thick red servo arm that comes with Hitec servos and it seems to handle the ball links okay.

Ernie

Congrats On the maiden Adam, I'm sorry and I'm happy for you, your about to become a Twistoholic.

Way to go Adam!!! [sm=thumbup.gif]

Awww, thanks guys! I am already so addicted to this hobby it isn't even funny. I started last summer by picking up a Park Zone RTF plane. In less than a year I now have 10 planes. 6 up and running, one being built, and 2 that need repair. Who knows how many thousands I have spent in the 8 months I have been in the hobby.

What's one more addiction. I have the Twist in the truck ready for a lunch break flight today. This will be flight number 5. I can see why you guys love this plane. It is so different from any of my high wings, sport flyers, and foamies. There is just a lot more a person can do with this plane. I have been looking for a plane to put an AXI 4130 and a 6s 4000mah battery in. Maybe I should pick up Twist #2. Do they have a Twistaholics anonnomous yet?

Adam