RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> RC Airplanes >> 3D Flying! >> RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD
Page: <<   < prev  3 4 5 6 7 8 9 10 [11] 12   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/27/2007 2:34:57 AM   
nonstoprc



Posts: 1007
Joined: 9/9/2003
From: austin, TX, USA
Status: offline 		That tail-wheel assembly weights 3oz. Definitely on the heavy side. Mine is from Wildhare RC, about 2oz.

(in reply to Al Lewis)
       Post #: 251

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/27/2007 3:26:49 AM   
Al Lewis


 

Posts: 1791
Joined: 7/5/2005
From: Port Orchard WA, USA
Status: offline 		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.

_____________________________

Take Offs are Optional, Landings are Really Nerve Racking!! Al Lewis AMA #821623

(in reply to nonstoprc)
       Post #: 252

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/28/2007 2:16:05 AM   
nonstoprc



Posts: 1007
Joined: 9/9/2003
From: austin, TX, USA
Status: offline 		Lou,

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

Have you tried that Vess 23A yet?


(in reply to Al Lewis)
       Post #: 253

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/28/2007 2:39:39 AM   
Al Lewis


 

Posts: 1791
Joined: 7/5/2005
From: Port Orchard WA, USA
Status: offline 		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

_____________________________

Take Offs are Optional, Landings are Really Nerve Racking!! Al Lewis AMA #821623

(in reply to nonstoprc)
       Post #: 254

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/28/2007 10:58:41 AM   
blunderbum


 

Posts: 78
Joined: 9/18/2003
From: Adelaide, AUSTRALIA
Status: offline 		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.

Attachments
Click to see fullsize image.
Click for fullsize 		Click to see fullsize image.
Click for fullsize

(in reply to Al Lewis)
       Post #: 255

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/28/2007 10:23:15 PM   
Al Lewis


 

Posts: 1791
Joined: 7/5/2005
From: Port Orchard WA, USA
Status: offline 		Is that a wet weight? Sounds high for a dry weight. Looks great though!!! Nice job!!

_____________________________

Take Offs are Optional, Landings are Really Nerve Racking!! Al Lewis AMA #821623

(in reply to blunderbum)
       Post #: 256

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/29/2007 7:59:40 AM   
blunderbum


 

Posts: 78
Joined: 9/18/2003
From: Adelaide, AUSTRALIA
Status: offline 		That is the dry weight and I was a bit disappointed as well, it need to go on a diet already.

(in reply to Al Lewis)
       Post #: 257

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/29/2007 4:34:22 PM   
Al Lewis


 

Posts: 1791
Joined: 7/5/2005
From: Port Orchard WA, USA
Status: offline 		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??

< Message edited by Lou55 -- 9/29/2007 9:30:58 PM >

_____________________________

Take Offs are Optional, Landings are Really Nerve Racking!! Al Lewis AMA #821623

(in reply to blunderbum)
       Post #: 258

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/30/2007 4:09:13 PM   
Al Lewis


 

Posts: 1791
Joined: 7/5/2005
From: Port Orchard WA, USA
Status: offline 		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.

_____________________________

Take Offs are Optional, Landings are Really Nerve Racking!! Al Lewis AMA #821623

(in reply to nonstoprc)
       Post #: 259

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/30/2007 8:05:40 PM   
nonstoprc



Posts: 1007
Joined: 9/9/2003
From: austin, TX, USA
Status: offline 		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.

(in reply to Al Lewis)
       Post #: 260

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 9/30/2007 8:30:23 PM   
Al Lewis


 

Posts: 1791
Joined: 7/5/2005
From: Port Orchard WA, USA
Status: offline 		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.


< Message edited by Lou55 -- 9/30/2007 8:35:30 PM >

_____________________________

Take Offs are Optional, Landings are Really Nerve Racking!! Al Lewis AMA #821623

(in reply to nonstoprc)
       Post #: 261

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 10/1/2007 11:32:00 AM   
nonstoprc



Posts: 1007
Joined: 9/9/2003
From: austin, TX, USA
Status: offline 		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.

[image][/image]


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

Attachments
Click to see fullsize image.
Click for fullsize


< Message edited by nonstoprc -- 10/1/2007 11:36:08 AM >

(in reply to Al Lewis)
       Post #: 262

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 10/1/2007 2:33:30 PM   
Al Lewis


 

Posts: 1791
Joined: 7/5/2005
From: Port Orchard WA, USA
Status: offline 		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.

< Message edited by Lou55 -- 10/1/2007 5:22:51 PM >

_____________________________

Take Offs are Optional, Landings are Really Nerve Racking!! Al Lewis AMA #821623

(in reply to nonstoprc)
       Post #: 263

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 10/8/2007 1:01:17 AM   
blunderbum


 

Posts: 78
Joined: 9/18/2003
From: Adelaide, AUSTRALIA
Status: offline 		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.

(in reply to blunderbum)
       Post #: 264

RE: Aviation Models/TOC 30% Extra 260 BUILD THREAD - 10/8/2007 1:19:09 AM   
nonstoprc



Posts: 1007
Joined: 9/9/2003
From: austin, TX, USA
Status: offline 		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.

(in reply to Al Lewis)
       Post #: 265