RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

That tail-wheel assembly weights 3oz. Definitely on the heavy side. Mine is from Wildhare RC, about 2oz.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Yeah, I think this is definately the common link to the confusion and contraversy in this thread over the CG on this plane. If you go from a super light Sullivan or CF to my tail gear you would dramatically change your CG with a 4 foot + moment. I'm sure that's the reason I had to put 9 1/4 ounces of lead and both batteries in my engine box to get this thing to balance. Even with all of that it is absolutely dead on. I'm talking dead level flight either upright or inverted with the tank 3/4 to full.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Lou,

True. as long as the plane is balanced, it will fly well.

Have you tried that Vess 23A yet?

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

I agree, I think this plane will fly great now that I've worked out the bugs (mostly caused by me). I found that my switch wasn't good enough on the Rx so the elevator servos weren't returning to center. I've since replaced the switch and plan on putting in HS 5985 servos tomorrow just for good measure. Still haven't run the Vess as I've been trying to get the plane trimmed properly before I experiment with anything else but I'll PM you the minute I do and let you know how it does. I'm betting this engine will spin it up great! As it is, with the Xoar, it hovers one click over high idle and pulls out at two. Not sure what I need more power for but you can never have enough. Allows me to get out of trouble as fast as I got in it! LOL

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

I just finished putting the final touch's on the extra and decided to fire up her up. About 10 flicks of the prop the the 3W fired up and sounded beautiful on a canister muffler. Total weight is 18.02lbs. Just waiting for the weather to clear for her maiden flight.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Is that a wet weight? Sounds high for a dry weight. Looks great though!!! Nice job!!

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

That is the dry weight and I was a bit disappointed as well, it need to go on a diet already.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Must be the difference between the engine and canister weights. With a DL-50 and stock muffer running NiMH battery packs (2) I'm just over 16 pounds. You add smoke or anything?? NonstopRC, did your's come in that heavy??

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Flew the Extra yesterday. Flew really well. When I got ready to take it home and pulled the hatch I noticed that one of the aluminum tubes that locate the hatch at the front was missing. It evidently had come loose in flight and dropped out the front through the cowl. I picked up some 5/16" hardwood dowel and replaced it. You may want to check yours.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Mine is at 16 lb 6oz. 1100mah nicads x 3. CF landing gear, 5945 servos x 4, 5989 servo x 1, DA50 + Pitts wrap-around muffler (6 oz).

The profile of the wings is not very thick so it flies relatively fast.

I would think if it can have unlimited vertical, then weight-wise it is OK.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

I agree! I'm not worried about adding weights to balance mine as it has way too much power now so that is not an issue. My flights yesterday, with the new switch, went very nice. I still added two more ounces today though just to try and get the plane a little nose heavy. I also mixed in spoilerons so I have 20% of up aileron and 5% down elevator at the flip of a switch to make the landings easier. I did this on my CAP and it took all of the float out of the wings. Lands great now. I'll let you know how it works out on the Extra when I get a chance to try it. Raining today and forecast all week. Hoping I get a window by next weekend. My weight came in about the same as yours Nonstop, can't figure 18 pounds for this bird without any additional weight in it though.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Lou,

here is the thrust line setting recommended by CompARF for their 2.1M Extra. Note the up thrust. On my SD extra, I initially set it to about +0.4 degree, and it seems more can be added from yesterday's test flying.

[img][/img]


Thanks for sharing the info on the alum pin. Need to watch for them, especially those for the wings!

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

I'm assuming that by Up Thrust they mean that the spinner should be pointing up when viewed from the side. Initially, mine was pointed down and it caused the plane to dive when full throttle was applied. I put a thick washer under each bottom stand-off which caused it to point up right around +1 degree. Now when I give it full throttle in level flight it pulls straight ahead without diving or climbing. As for the wing locating tubes, I'm not sure they can become an issue as they extend back into the wing through another former. I'm sure a little extra epoxy wouldn't hurt them though. I was considering replacing either the rear or front ones with wood dowel just so I could cross-drill the end inside of the fuse and put S clips through them. Haven't done it though. Thanks for the chart. Hope you get yours sorted out. The new Rx on/off switch took away 90% of my remaining problems. Still going to put the 5985s in the horizontal stab. That should really give me good resolution and lock the plane in.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

I finally test flew the Extra on Sunday and WOW, this is a really nice plane to fly. The weight (18lbs) of the plane was not an issue as the 3W has a bucket load off power, hovers at 1/4 throttle and unlimited vertical performance. This plane flat spins really sweet and has a small amount off knife edge coupling towards the canopy, easily mixed out. Can't wait for the motor to run in now and put a bigger prop on her for a smoother throttle response. Thanks for all you help.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

I adjusted the wing incidence to +0.5 degree yesterday ( in the same direction as up-thrust). The improvement on tracking during loops is significant. I also added very thin spacers to give it a tiny more right-thrust. Now it tracks straight in up-line (like my pattern ship).

The only problem I need to fix is the knife edge coupling (toward the bottom) via mixing.


The other thing I found is that it does not like positive aileron differential. I need to give it negative aileron differential to make the roll pretty.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Here's a few photos from todays flight.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Looks really sweet! Glad she's flying so well for you!:D:D:D

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Hey Lou55,

Just purchased the #4 color scheme from TBM and it's looks awesome. It's the new HP version with engine box mounted and all surfaces glued except the rudder which is sweet. I've read all 14 pages of the build thread which really helps since the manual doesn't come with the plane. I see it's online but it doesn't print out all that well. It's my 1st gasser at 52 so that's exciting. I seem to have been shorted the control horns. Did your plane have these?[&o]
Frank

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

Mine came with everything but the tail wheel. I wouldn't worry too much about the instructions as the ones I downloaded from TBM were for the YAK and of little use for the Extra. Do yourself a favor though, if your using Hitec servos, and go with the 5985MGs for the elevator. I had the 5645s in and they weren't anywhere near enough. The 85s are great though.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

So, SRpropTwister how's the build coming???

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

new here in this forum, mine is finished all but balancing. da-50,slimline smoke muff. w/sullivan sky writer,mixed with throttle,all hitech 5955"s , ds821 choke & throttle,32oz. smoke,stock fuel tank,dx7 w/ar9000 rec.2 remotes,2 2000 mah.lipo w/reg for flight,1 for ign.& 1 for smoke pump all 2000 mah. times 4 was curious about the cg. what are you all setting it at 6.5" of what input would be greatfull!!

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

I have finally set mine 6" from the lead edge at the fuse as anything behind that seems just slightly tail heavy. Been fine tuning the setup for a month now. Thrust-lines, balance, prop.....

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

is 6" a good start? inst. calls for 6.5" dry balance will put it nose heavy due to stock fuel tank full and 32oz. smoke tank should i balance it with 1/2 tank of fuel to gain a happy medium balance point when smoke tank is dry just curios what do we doin this situation due to the tanks being in front of the cg. honestly never thought of this when i flew glo planes

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

What kind of connectors are used between the fuselage and the wings for the servos?? I have been connecting and disconnecting the servo wires each time i setup my plane at the field, and was wondering if there is an easier way. Thanks for any help.

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
 

32 oz of fuel will make it a little bit of nose heavy. So just be sure to fly it for about 10 minutes initially to check CG etc out. I set mine at about 6.5" with an empty 20oz tank. The up-thrust angle is at 1 degree and wing incidence is at +0.5 degree to fix the "pull to the belly" at full throttle problem.

BTW, nice covering job on the Extra. I also happen to own the WH Edge 540.