RE: Yet another Sig Something Extra Build  
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 >> Kit Building >> RE: Yet another Sig Something Extra Build
Page: <<   < prev  1 2 [3] 4 5 6 7 8 9 10   next >   >>  

Login
Message << Older Topic   Newer Topic >>
RE: Yet another Sig Something Extra Build - 1/14/2008 1:34:28 AM   
kbear



Posts: 295
Joined: 9/11/2004
From: Denton, TX, USA
Status: offline 		I think you got that one deep enough. It just might grow come spring.

(in reply to N1EDM)
       Post #: 51

RE: Yet another Sig Something Extra Build - 1/14/2008 1:54:56 AM   
N1EDM



Posts: 1829
Joined: 7/19/2002
From: Brockton, MA, USA
Status: offline 		Geeze, kbear, y'know, I never thought of that. I could have grown a LT-25! And when it grew up, it could have been another LT-40!!

What do you think I should use for fertilizer? And please, don't tell me to talk to it, OK?

Bob

_____________________________

An expert is someone who has been doing it for 15 minutes longer than you.

(in reply to kbear)
       Post #: 52

RE: Yet another Sig Something Extra Build - 1/14/2008 2:10:34 AM   
iron eagel



Posts: 1135
Joined: 7/15/2004
From: Middleboro, MA, USA
Status: online 		Bob is that in the parking lot?

_____________________________

The Wrights never crashed, they only had hard landings. I 've had some hard landings myself. AMA EAA AOPA revver #185

(in reply to N1EDM)
       Post #: 53

RE: Yet another Sig Something Extra Build - 1/14/2008 2:30:31 AM   
N1EDM



Posts: 1829
Joined: 7/19/2002
From: Brockton, MA, USA
Status: offline 		Nope, it's actually over the other club field. I had to go there today cuz we had to get together for an informal meeting. Otherwise, I would have planted it over at WB Field. I came out of a turn and flew right into the sun. I had a new wing on it, and it turned slower than I had anticipated, otherwise, I would have missed the sun. Once it went in front of old Sol, I never saw it again until I heard the thunk. I've never buried an engine that deep before (Magnum .91, its first flight, was running sweet).

Sorry to get off topic. With the LT gone, I might have more room in the 'hangar' for another plane. I still have that SSE kit looking at me, along with the Mid-Star.

Bob

_____________________________

An expert is someone who has been doing it for 15 minutes longer than you.

(in reply to iron eagel)
       Post #: 54

RE: Yet another Sig Something Extra Build - 1/14/2008 3:20:31 AM   
kbear



Posts: 295
Joined: 9/11/2004
From: Denton, TX, USA
Status: offline
quote:

ORIGINAL: N1EDM

Geeze, kbear, y'know, I never thought of that. I could have grown a LT-25! And when it grew up, it could have been another LT-40!!

What do you think I should use for fertilizer? And please, don't tell me to talk to it, OK?

Bob


Fertilize with 25% nitro of course.

(in reply to N1EDM)
       Post #: 55

RE: Yet another Sig Something Extra Build - 1/18/2008 4:25:01 AM   
iron eagel



Posts: 1135
Joined: 7/15/2004
From: Middleboro, MA, USA
Status: online 		Bob sorry to hear about that hope the engine survived...
Looks like no fly weekend for us, that is, unless your into some wind chill....

Well finally got back to building tonight and as I was waiting for the fuselage side doublers to dry I started to read through the manual again. Every time I got to pg 13 and read step 48 I got a bit more concerned. The reason for that is if there is any problem with the relationship of the wing panel roots to the fuselage that must mean that something is out of square. Since the wing panels are built on the plans lets assume for a moment they are square, so what does that leave? That only leaves the fuselage itself as the issue any misalignment of the formers and you’re going to have one side or the other out of line and that will skew the fuselage sides making the wing tube no longer 90 deg. to the fuse, and create a problem with where the root meets the fuselage. Now by the looks of it only the formers and the servo tray serve as the means to keep the fuselage sides in the proper orientation to each other.
Given that we are working with wood and it is not an absolute perfect medium how much of an issue is this?
Am I being overly concerned with something that is not that big or common of a problem? I notice that they make no mention of what you can do to correct the problem in the manual, and I have read of others using fillers sanded to shape when they encountered this problem.
But my trying to think ahead has come up with a whole myriad of problem this can cause down the line up to an including having a twist in the fuselage as you build up the tail by adding formers and the top and bottom. From what I see they look at the components and there installation as being the thing that keeps the fuselage square and straight. As a matter of fact I recall that when I built the lt-40 for my wife this was the case. During the course of that build you assembled the fuse with rubber bands and tape and did not glue it till all of the components were in place and it had been checked for being straight and true. After all of the stick building I have done, this seems to be a bit of a leap of faith as far as building the plane and wonder if it is a real issue, or as usual I am getting stressed over a very minor detail.


_____________________________

The Wrights never crashed, they only had hard landings. I 've had some hard landings myself. AMA EAA AOPA revver #185

(in reply to N1EDM)
       Post #: 56

RE: Yet another Sig Something Extra Build - 1/18/2008 5:00:59 AM   
iron eagel



Posts: 1135
Joined: 7/15/2004
From: Middleboro, MA, USA
Status: online 		I am really not trying to be critical here, I just think that it would be far better to not glue up the servo tray, landing gear block, or the reinforcements for F1 prior to fitting the wings to the fuse and make sure it is square before every thing is set in stone by gluing them up.
And I wanted to get opinions of other builders are far as their thoughts on it, before I proceeded. Perhaps it is not as much of an issue as i think and I am just bing to fussy about the whole thing.
As far as the tail, I intend to build over the plan so that I will be able to keep in in proper alignment, and where I am making some changes to the structure such as adding longerons to the bottom of the Fuselage so I can round it out on the lower edges rather than leaving it square or only the edges rounded out. I wanted to get some input from others whom have built these before and their thoughts about the build.

_____________________________

The Wrights never crashed, they only had hard landings. I 've had some hard landings myself. AMA EAA AOPA revver #185

(in reply to iron eagel)
       Post #: 57

RE: Yet another Sig Something Extra Build - 1/18/2008 9:45:14 PM   
N1EDM



Posts: 1829
Joined: 7/19/2002
From: Brockton, MA, USA
Status: offline 		HI Paul,

It's been a few years since I built my SSE, and I remember a bit of a gap between the fuse and the wing root. The gap was about 1/32" - 1/16" as I recall. It didn't seem to affect flight or the structural integrity. Tha gap seemed larger to me than it probably actually was. It was probably my imagination.

I have wondered since then if I could have put some waxed paper over the fuse/wing area then buttered up the wing root outline with something, then mount the wing. The squeeze-out could be trimmed flush with the wing sheeting. Whatever is used for 'butter' would have to be sandable and relatively strong.

Maybe an idea like this would be some food for thought.

As for the crash, well I considered the plane totalled - it would take too much work to get it to fly again. The engine has been torn down completely and rebuilt. No apparent damage. The bearings seem clean, and the crank seems straight, so no damage done. The frustrating part was that I had just found that 'sweet spot' on the low end. Tick-over idle and great response. Rob L would hate me!!

Bob

Bob

_____________________________

An expert is someone who has been doing it for 15 minutes longer than you.

(in reply to iron eagel)
       Post #: 58

RE: Yet another Sig Something Extra Build - 1/19/2008 12:43:06 AM   
alex7403


 

Posts: 550
Joined: 6/29/2004
From: New york, NY, USA
Status: offline 		Bob you left me in shock with that picture yesterday.
Forgive me.
Paul if you glue that servo it will a bigger fuss to remove it if its not functioning as it suppose to.

Alex

_____________________________

measure twice cut once, again i cant believe i didnt learn it yet....

(in reply to N1EDM)
       Post #: 59

RE: Yet another Sig Something Extra Build - 1/19/2008 1:01:59 AM   
N1EDM



Posts: 1829
Joined: 7/19/2002
From: Brockton, MA, USA
Status: offline 		Hi Alex,

Are you referring to the Vertical LT-40 two pages back???? :-)

Bob

_____________________________

An expert is someone who has been doing it for 15 minutes longer than you.

(in reply to alex7403)
       Post #: 60

RE: Yet another Sig Something Extra Build - 1/19/2008 1:20:46 AM   
alex7403


 

Posts: 550
Joined: 6/29/2004
From: New york, NY, USA
Status: offline
Yes im still figuring it out, maybe because i was working once doing fracture analysis in reverse engineering company.

I usually crash into nasty trees on a peaceful approach for landing,,,,, right before I need a new plane.

I remember me and other guys were telling some guy “listen stop this crashing every weekend, its painful to see”.

Its painful but there is nothing like a new plane to compensate for the event (i'm not from hobbico or something).


_____________________________

measure twice cut once, again i cant believe i didnt learn it yet....

(in reply to N1EDM)
       Post #: 61

RE: Yet another Sig Something Extra Build - 1/19/2008 1:33:19 AM   
r2champion



Posts: 350
Joined: 9/5/2006
From: Mayking, KY, USA
Status: offline
quote:

ORIGINAL: N1EDM

Hi Alex,

Are you referring to the Vertical LT-40 two pages back???? :-)

Bob

Sorry, but I had to laugh at the landing gear lying on the ground that were ripped out from the G forces of the sudden stop! Again, I apologize for a sidetrack here but I have never seen that before!

edited for spelling.

_____________________________

My intials are "RC", I guess it was meant to be!

(in reply to N1EDM)
       Post #: 62

RE: Yet another Sig Something Extra Build - 1/19/2008 1:39:25 AM   
iron eagel



Posts: 1135
Joined: 7/15/2004
From: Middleboro, MA, USA
Status: online 		Bob,
Glad to hear your engine survived, looks like you have a reason for a new plane to put it in now.

Yes, I had thought about doing that if there is an issue with the wing panels, hopefully by making sure that the sides are matched to each other I will have a chance to have the wing tube properly aligned. I am just a bit curious about why they wait till you can not do anything about it before they have you check the alignment...

Alex I am not talking about gluing the servo in, what I was talking about was waiting to glue the servo tray until after the alignment of the fuselage sides to one another so the wing tube is 90 degrees to the fuse and the wing panels fit flush.

_____________________________

The Wrights never crashed, they only had hard landings. I 've had some hard landings myself. AMA EAA AOPA revver #185

(in reply to N1EDM)
       Post #: 63

RE: Yet another Sig Something Extra Build - 1/19/2008 1:41:33 AM   
iron eagel



Posts: 1135
Joined: 7/15/2004
From: Middleboro, MA, USA
Status: online
quote:

ORIGINAL: r2champion

quote: