Go Back  RCU Forums > RC Airplanes > Sport Flying
 LT-40 weight >

LT-40 weight

Notices
Sport Flying This forum is for those that like to fly just for the enjoyment of flying, and all the airplanes that help them. Discuss here the joys of flying and the airplanes that help you enjoy it.

LT-40 weight

Old 05-20-2007, 03:35 PM
  #1  
Thread Starter
 
Join Date: Jan 2006
Location: Central California, CA
Posts: 237
Likes: 0
Received 0 Likes on 0 Posts
Default LT-40 weight

Hey All,

I was wondering,how heavy is to heavy for a LT-40?The reason I'm asking is I never weighed my plane after I was done building it,and I noticed it felt heavier than my LT-40 arf,so I weighed both of them.The arf weighed in at seven pounds,and the kit built plane weighs in at just over eight pounds.The arf has a Saito FA-56 in it,and the kit plane has a Saito FA-82 for power.The kit plane has never been flown yet,it is slightly modified:almost no dihedral,it has flaps,and was built as a taildragger.It came out tail heavy,so I used a 4200mah sub "C" receiver pack instead of using lead to balance it.What do you guys think?

Thanks in advance Jim
Old 05-20-2007, 04:50 PM
  #2  
 
Join Date: Apr 2006
Location: Warialda NSW, AUSTRALIA
Posts: 2,275
Likes: 0
Received 0 Likes on 0 Posts
Default RE: LT-40 weight

G'day Jim,
It will fly, it will have to fly faster, because of the increased wing loading, but it will fly.
It will have plenty of power, I hope you are using a 14x6, & have wheels large enough to allow ground clearance.
Even a brick will fly, with enough power, & NO, I'm not suggesting that your plane is a brick.
Old 05-20-2007, 05:01 PM
  #3  
My Feedback: (8)
 
proptop's Avatar
 
Join Date: Oct 2002
Location: Rome, NY
Posts: 7,036
Likes: 0
Received 2 Likes on 2 Posts
Default RE: LT-40 weight

It'll handle windy days better...heavier airplanes with a higher wing loading won't get knocked around as much.
You have more than enough power. As long as the wing center section is strong enough to handle G loads during manuvering, it should be o.k.

Give ya an example...
We had some lab guys that put between 6-7 lbs. of equipment in a Thunder Tiger "Tiger .60" trainer.
We had an O.S. .91FX on it, with a 32 oz. fuel tank...and it weighed in at 15 lbs. ready for take off...[X(]
I was their "stick man"...It flew o.k....went 97 m.p.h. (according to GPS ) and glided like a (streamlined ) brick...but 20-25 mph winds were no problem. (to be honest...winds were actually a good thing with all that weight, trying a STOL was tricky without wind )
Old 05-20-2007, 11:52 PM
  #4  
Thread Starter
 
Join Date: Jan 2006
Location: Central California, CA
Posts: 237
Likes: 0
Received 0 Likes on 0 Posts
Default RE: LT-40 weight

Hey guys,

here's a couple pictures of the above mentioned planes.This is my first time trying to post pictures on this forum,I hope it works!
Thanks for your replies.
Jim Club Saito Member 509

Attached Thumbnails Click image for larger version

Name:	Om34092.jpg
Views:	15
Size:	78.4 KB
ID:	688571   Click image for larger version

Name:	Ax72841.jpg
Views:	15
Size:	134.3 KB
ID:	688572   Click image for larger version

Name:	Tr51559.jpg
Views:	20
Size:	57.7 KB
ID:	688573   Click image for larger version

Name:	Ig13746.jpg
Views:	19
Size:	119.1 KB
ID:	688574   Click image for larger version

Name:	Yv66222.jpg
Views:	19
Size:	106.6 KB
ID:	688575   Click image for larger version

Name:	Yw66601.jpg
Views:	15
Size:	131.4 KB
ID:	688576   Click image for larger version

Name:	Dy80275.jpg
Views:	24
Size:	131.4 KB
ID:	688577   Click image for larger version

Name:	Yd83112.jpg
Views:	16
Size:	137.5 KB
ID:	688578  

Click image for larger version

Name:	Hb80158.jpg
Views:	20
Size:	78.4 KB
ID:	688579   Click image for larger version

Name:	Vg53724.jpg
Views:	15
Size:	57.7 KB
ID:	688580   Click image for larger version

Name:	Bs14976.jpg
Views:	14
Size:	119.4 KB
ID:	688581   Click image for larger version

Name:	Lj23020.jpg
Views:	16
Size:	134.3 KB
ID:	688582  
Old 05-21-2007, 12:32 PM
  #5  
Senior Member
 
carrellh's Avatar
 
Join Date: Mar 2003
Location: Garland, TX
Posts: 6,544
Likes: 0
Received 0 Likes on 0 Posts
Default RE: LT-40 weight

I've always heard that the LT-40 kit builds pretty light, so I'm a little surprised about yours.

I have a Great Planes PT-60. It's about the same size as the LT-40 and it weighs about 8 pounds. My plane is modified to be a tail dragger, no dihedral, dual aileron servos, etc. My plane seems to glide forever, so I doubt that you'll have any negative issues with yours.
Old 05-21-2007, 06:08 PM
  #6  
Thread Starter
 
Join Date: Jan 2006
Location: Central California, CA
Posts: 237
Likes: 0
Received 0 Likes on 0 Posts
Default RE: LT-40 weight

Yeah I guess I used a little to much epoxy in the fuselage around the engine and fuel compartments.Whats really odd is it ended up tail heavy!All I added to the rear fuse was a tail wheel and some tri stock to the fin for strength.I also glassed the whole wing center section.Oh well it'll probably fly fine. I just hope the landing gear holds up to our rough field and my dumb thumbs!I hope to fly her this weekend(long weekend)so I'll let you guys know it goes.I know its just a trainer but these LT's are the most fun for me.I have four of them well three and a Seniorita.Simple to fly and simple to repair.

Thanks for your comments.

Jim, Club Saito Member #509

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Thread Tools
Search this Thread

Contact Us - Manage Preferences Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.