Notices
Electric Pattern Aircraft Discuss epowered pattern aircraft in this forum

Sickle wing delaminated

Old 06-21-2009, 11:01 PM
  #1  
lsjpeng
Senior Member
Thread Starter
 
Join Date: Feb 2004
Location: Mountain View, CA
Posts: 239
Likes: 0
Received 0 Likes on 0 Posts
Default Sickle wing delaminated

A friend of mine has a Sickle ARF. The upper left wing surface delaminated only after 20 flights. Fortunately he got it back safely. See pix below, Sickle is out of my wish list for sure!

Last pix is a nitro guy tried to help with a duct tape...... nice try Jon!

Luke

Attached Thumbnails Click image for larger version

Name:	Nl30604.jpg
Views:	25
Size:	85.5 KB
ID:	1222329   Click image for larger version

Name:	Kf14253.jpg
Views:	17
Size:	83.8 KB
ID:	1222330   Click image for larger version

Name:	Hm24241.jpg
Views:	19
Size:	79.1 KB
ID:	1222331   Click image for larger version

Name:	Uo36886.jpg
Views:	18
Size:	70.5 KB
ID:	1222332   Click image for larger version

Name:	Gr91802.jpg
Views:	16
Size:	70.0 KB
ID:	1222333  
Old 06-21-2009, 11:29 PM
  #2  
woodie
 
woodie's Avatar
 
Join Date: Jun 2002
Location: Absarokee, MT
Posts: 1,148
Likes: 0
Received 1 Like on 1 Post
Default RE: Sickle wing delaminated

Ouch!!! Terry, you did a great job landing that wounded bird...

Woodie
Old 06-22-2009, 02:07 AM
  #3  
tIANci
Senior Member
 
tIANci's Avatar
 
Join Date: Jan 2004
Location: Kuala Lumpur, MALAYSIA
Posts: 10,489
Likes: 0
Received 2 Likes on 2 Posts
Default RE: Sickle wing delaminated

This is typical when they want to build composite wings and want to keep her really light, not that this baby is light. At least its down in one piece, minus a bit more.
Old 06-22-2009, 08:06 AM
  #4  
mups53
My Feedback: (41)
 
Join Date: Jan 2002
Location: Algonquin Illinois IL
Posts: 2,347
Received 1 Like on 1 Post
Default RE: Sickle wing delaminated

Thanks for the report. I'm going to add a 1 inch piece of clear packing tape to the leading edge of mine. I think the air gets in a causes a pressure inside the wing.
Yes the wing is actually pretty light on the plane for a composite and this doesn't surprise me at all. I'm sorry it happened to your freind. I know that he can obtain a replacement wing panel. Mike
Old 06-22-2009, 08:10 AM
  #5  
patternflyer1
My Feedback: (11)
 
patternflyer1's Avatar
 
Join Date: Jul 2003
Location: Tracy, CA
Posts: 2,080
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sickle wing delaminated

Dang, that sucks Luke!

Seems like it's time to start building from kit form again!

Chris
Old 06-22-2009, 08:19 AM
  #6  
mups53
My Feedback: (41)
 
Join Date: Jan 2002
Location: Algonquin Illinois IL
Posts: 2,347
Received 1 Like on 1 Post
Default RE: Sickle wing delaminated

Hey Luke with 20 flights on it did you guys form an opinion on the plane's flying ability? Mike
Old 06-22-2009, 11:15 AM
  #7  
lsjpeng
Senior Member
Thread Starter
 
Join Date: Feb 2004
Location: Mountain View, CA
Posts: 239
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sickle wing delaminated


ORIGINAL: mups53

Hey Luke with 20 flights on it did you guys form an opinion on the plane's flying ability? Mike
According to Terry, it has potential. Problem is way too heavy. He has Planttenberg motor which is almost 4 Oz lighter than AXI 5330/FAI, the total weight wasaround 11.5 lb.
Old 06-22-2009, 12:22 PM
  #8  
mups53
My Feedback: (41)
 
Join Date: Jan 2002
Location: Algonquin Illinois IL
Posts: 2,347
Received 1 Like on 1 Post
Default RE: Sickle wing delaminated


ORIGINAL: lsjpeng


ORIGINAL: mups53

Hey Luke with 20 flights on it did you guys form an opinion on the plane's flying ability? Mike
According to Terry, it has potential. Problem is way too heavy. He has Planttenberg motor which is almost 4 Oz lighter than AXI 5330/FAI, the total weight wasaround 11.5 lb.
Luke I actually make weight with the Pletty. I've found the plane to fly a little too light for my tastes. So in reality I think a 11.5 pound Sickle would probably fly pretty well if balanced properly. Trouble is it deosn't make weight. Mike
Old 06-24-2009, 01:08 AM
  #9  
tewalker01
My Feedback: (5)
 
Join Date: Sep 2005
Location: San Jose, CA
Posts: 67
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sickle wing delaminated

Mike,

We talked all about the weight issues on a Sickle build forum. I could get very close to making weight if I used lighter batteries.

The biggest flying difference that I found between it and my Integral was the rudder authority. The Integral doesn't take much to fly knife edge/stall turns versus the Sickle which takes a lot more. Also, the Sickle fuselage is bigger and heavier than my Integral which helps it "lock in" on a line (or works against you on a snap?).

I am about to see if the manufacturer stands behind their product (or not) by asking them for a replacement left wing. I'll keep this forum updated on what transpires.

Time to put my Integral back together (it only has 341 flights) so that I have something to fly.

Later,

Terry
Old 06-24-2009, 11:51 AM
  #10  
mups53
My Feedback: (41)
 
Join Date: Jan 2002
Location: Algonquin Illinois IL
Posts: 2,347
Received 1 Like on 1 Post
Default RE: Sickle wing delaminated

Hey Terry you want to contact Bear.
He's the GM of the company. They were helpful when I thought I needed a new canopy. Turns out that we were able to fix it as good as new.
Terry that is strange that you refer to the plane acting locked in. I find mine to be the opposite so far. I still think I have a CG problem. Where did you have yours in relation to the wing tube?
I've found the plane rolls better than anything I have ever flown. It's remarkable in that reguard.
Snaps were so bad in the beginning that it scared me. Mine look pretty good now with less elevator and much more aileron and rudder all setup on a condition switch.
Light lipo's are an option if the plane can still balance with them. I took so much weight out of the nose of mine that balance is an issue even with the lipo's pushed up to the firewall.
So far I have no mixing at all on knife edge. Plus the choices out there for lighter lipos is poor.
Do you feel the plane would benefit from a canolizer? I kind of think it needs the fin to be a little higher and the Canolizer might help it. Again 2 ounces would be added aft of the CG and that's a problem.. Thanks for your input. Sorry that your wing did that and again I'll now take precautionary measures to hopefully avoid the same fate. Mike

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.