Wattflyer RC Network: RC Universe :: RCU Magazine :: RCU Forums :: RCU Classifieds :: RCU User Reviews :: RCU YouTube
Home Who's Online Calendar Today's Posts RealTime Post Spy Mark Forums Read
Go Back   WattFlyer RC Electric Flight Forums - Discuss radio control eflight > Electric R/C Airplanes > Scratch and Kit Built Aircraft
Register Members List Wattflyer Extras Articles Search Today's Posts Mark Forums Read Social Groups

Scratch and Kit Built Aircraft Discuss and share your scratch built or kit built aircraft as well as building techniques, methods, mediums and resources.

Thank you for your support (hide ads)
Reply
 
Thread Tools Display Modes
Old 12-14-2012, 09:42 PM   #226
Stevephoon
Member
 
Stevephoon's Avatar
 
Join Date: Aug 2005
Location: White Lake, MI
Posts: 949
View Stevephoon's Gallery67
Thanked 98 Times in 97 Posts
Club: United Flying Organization
iTrader: (0)
Friends: (7)
Default Bad Second Flight.....

Well, did I mention that the motor was crazy strong??? The second flight I was pushing it a bit. Then.... tail flutter .... No control .... Into a tree..

If I had just thought fast enough, the spoilers may have helped. They were real effective on the maiden. The main damage is to the wing. Of course every section has issues. Not sure how to repair this much damage. So, my next question is for Don. Do you have a wing only kit? Even just the laser cut parts for the wing would be OK.

This is how it went at the flying field today. Someone disconnected their rudder in flight. (He got down OK, second flight on a new plane as well) Then two other planes went down hard and looked like mine.... Of course I was blamed for starting the trend.


Steve

Sorry, no picts of it in a tree... Just the wing damage after I got back.


Attached Thumbnails
Click image for larger version

Name:	DSCN0884_059.jpg
Views:	110
Size:	218.1 KB
ID:	164868
Click image for larger version

Name:	DSCN0885_060.jpg
Views:	114
Size:	300.7 KB
ID:	164869

Growing the fleet!
Stevephoon is offline  
  Reply With Quote
Old 12-14-2012, 09:55 PM   #227
Don Stackhouse
Don Stackhouse
 
Join Date: Sep 2012
Location: Bradford, Ohio, USA
Posts: 130
Thanked 22 Times in 19 Posts
Club: Flyn' Wolverines, UVFF
iTrader: (0)
Friends: (0)
Default

OUCH !!!

Well, that is fixable, and we could send you some ribs for that, but with the spar damage it's probably safer to build a new one. That right inboard panel is twisted pretty bad, and I'd be worried about other hidden damage that could show up later, usually at the worst possible time.

We do sell separate wing kits and fuselage+tail kits, each are $50. You can order them through the website.

We did it originally to help repair situations like yours, but a lot of folks like to order a full kit for one version, and a fuselage+tail kit for the other, so they can have both the pure sailplane and the electric version, using the same wing.

Very sorry to hear about your airplane-eating tree experience, but you will get it back in the air soon.
Don Stackhouse is offline  
  Reply With Quote
Old 12-14-2012, 11:08 PM   #228
vicrider
Member
 
vicrider's Avatar
 
Join Date: Dec 2011
Location: Claremore, Ok
Posts: 96
Thanked 4 Times in 4 Posts
iTrader: (0)
Friends: (0)
Default

oh crap! sorry to see that. I hope your first flight gave a good enough impression that you will go ahead and rebuild it.
vicrider is offline  
  Reply With Quote
Old 12-15-2012, 03:45 AM   #229
Dimeflyer
Member
 
Join Date: Apr 2010
Location: Southweastern Pa.
Posts: 747
Thanked 57 Times in 55 Posts
Club: haven't picked one yet ?
iTrader: (0)
Friends: (2)
Default

That is a ruph ending to a flight , sory to see that guy hope you can get the kit for the wing and have it in the air again !!
George
Dimeflyer is offline  
  Reply With Quote
Old 12-15-2012, 03:51 AM   #230
Don Stackhouse
Don Stackhouse
 
Join Date: Sep 2012
Location: Bradford, Ohio, USA
Posts: 130
Thanked 22 Times in 19 Posts
Club: Flyn' Wolverines, UVFF
iTrader: (0)
Friends: (0)
Default

I stopped by Joe's tonight to drop off some tooling for a new project, and mentioned we might be getting an order for a wing kit. I don't know if we have any wing kits packed up at the moment, but I believe we have all the materials to put one together for you.
Don Stackhouse is offline  
  Reply With Quote
Old 12-15-2012, 05:00 AM   #231
Bill G
Super Contrubutor
 
Bill G's Avatar
 
Join Date: Oct 2005
Location: West Central PA
Posts: 4,204
View Bill G's Gallery82
Thanked 169 Times in 163 Posts
Club: rcg staff
Awards Showcase

Outstanding Contributor Award  Outstanding Contributor Award  Scratchbuilders Award 
iTrader: (3)
Friends: (17)
Default

Originally Posted by Stevephoon View Post
Well, did I mention that the motor was crazy strong??? The second flight I was pushing it a bit. Then.... tail flutter .... No control .... Into a tree...
and it was the only tree in miles.
That's actually happened to me, more than once. Sorry to see this.
Proving that Murphy is really out there, the last two times I had this happen was when I actually had too little power, but tried to keep flying and should have just landed right away.
Bill G is offline  
  Reply With Quote
Old 12-15-2012, 04:36 PM   #232
Don Stackhouse
Don Stackhouse
 
Join Date: Sep 2012
Location: Bradford, Ohio, USA
Posts: 130
Thanked 22 Times in 19 Posts
Club: Flyn' Wolverines, UVFF
iTrader: (0)
Friends: (0)
Default

Steve, looking at your pic of the radio compartment in post #221, it looks like you did not tin the pushrod cables at that end, and you also have a very long unsupported length there. Pushrod flexibility ANYWHERE, including the servo end, opens the door wide open for flutter. A lot of folks make this mistake, take all sorts of precautions at the aft end, but forget to cover their bases at the servo end. This is probably a significant culprit in your flutter episode.
Don Stackhouse is offline  
  Reply With Quote
Old 12-15-2012, 05:10 PM   #233
Stevephoon
Member
 
Stevephoon's Avatar
 
Join Date: Aug 2005
Location: White Lake, MI
Posts: 949
View Stevephoon's Gallery67
Thanked 98 Times in 97 Posts
Club: United Flying Organization
iTrader: (0)
Friends: (7)
Default

Don, You could be correct. I did tin part of the rear but not the front. I'm sure that contributed to the control problems either way. Trying to push on the flex cable while fluttering.... Not a good thing.


Now that I am over the shock and disappointment.... I have taken a good look at the wing and removed some of the covering. The main spar is cracked on the one outer wing with damage and it's shattered on the center wing on the one side with all of damage. At a minimum about 2 in of main spar would need to be replaced, and then spliced in. All of the ribs in that area are broken, the trailing rear spar is broken in multiple places and so is the trailing edge. If the main spar was not so screwed up I'd say it's fixable, but with the spar broken that bad in what I think is a relatively high stress area, at least that 1/4 of wing should be replaced. Of course that 1/4 of a wing is epoxied to the other side... And there is a outer wing with significant damage...

So I guess it's time to order a new wing.

Well it did fly for about 15 minutes. At least I didn't step on it or drop something on it before the maiden. The first flight was about 13 minutes and the 2200 mAh battery was only down to 68% charge according to my battery charger. Good long flights are definitely possible, even when there are no thermals around.

Crashingly yours,
Steve

Growing the fleet!
Stevephoon is offline  
  Reply With Quote
Old 12-16-2012, 02:40 PM   #234
FishHawk
Member
 
Join Date: Dec 2012
Posts: 171
Thanked 0 Times in 0 Posts
iTrader: (0)
Friends: (0)
Default How big a field do u need?

Just wondering how much space do u need to fly the Chrysalis? Is soccer field big enough?
FishHawk
FishHawk is offline  
  Reply With Quote
Old 12-16-2012, 03:27 PM   #235
Don Stackhouse
Don Stackhouse
 
Join Date: Sep 2012
Location: Bradford, Ohio, USA
Posts: 130
Thanked 22 Times in 19 Posts
Club: Flyn' Wolverines, UVFF
iTrader: (0)
Friends: (0)
Default

Depending on your skill level, not much. Joe and I have flown ours in little league baseball diamonds, and in an elementary school schoolyard with tall trees and buildings all around (however, I wouldn't recommend doing that unless absolutely necessary, and unless you have enough power for near-vertical climbs). The area behind my house is large farm fields, gobs of room (as long as it isn't full of twelve-foot-tall corn), but the landing space in the back yard itself is only about 60' x 120'. Plenty of room, if you know what you're doing. A soccer field should be enough if you have adequate flying skills.

The plane is almost as maneuverable and can turn almost as tight as the 1.5 meter HLG version, if you know how. There are some articles in the "Ask Joe and Don" section of our website [url]www.djaerotech.com[/url} that discuss some of the special techniques for making really tight thermal turns.

However, a beginner should plan on a lot more space, and without a lot of obstructions around the edges.
Don Stackhouse is offline  
  Reply With Quote
Old 12-19-2012, 01:56 AM   #236
FishHawk
Member
 
Join Date: Dec 2012
Posts: 171
Thanked 0 Times in 0 Posts
iTrader: (0)
Friends: (0)
Default Balsa block

What is the best way to get the proper angle when sanding the balsa block?
FishHawk is offline  
  Reply With Quote
Old 12-19-2012, 02:26 AM   #237
Don Stackhouse
Don Stackhouse
 
Join Date: Sep 2012
Location: Bradford, Ohio, USA
Posts: 130
Thanked 22 Times in 19 Posts
Club: Flyn' Wolverines, UVFF
iTrader: (0)
Friends: (0)
Default

Which balsa block?
Don Stackhouse is offline  
  Reply With Quote
Old 12-19-2012, 06:24 PM   #238
FishHawk
Member
 
Join Date: Dec 2012
Posts: 171
Thanked 0 Times in 0 Posts
iTrader: (0)
Friends: (0)
Default

The one next to the A rib on the inboard side of the wing . I don't have the plan in front of me so I hope you know what I mean. FishHawk.
FishHawk is offline  
  Reply With Quote
Old 12-19-2012, 06:54 PM   #239
Don Stackhouse
Don Stackhouse
 
Join Date: Sep 2012
Location: Bradford, Ohio, USA
Posts: 130
Thanked 22 Times in 19 Posts
Club: Flyn' Wolverines, UVFF
iTrader: (0)
Friends: (0)
Default

That provides a reinforced area for the forward attachment bolt if you build the bolt-on wing option.

Fitting blocks like that is a fundamental skill you will need in many future building projects. Just sand it with a sanding block till it matches the tilt in the A rib. It only requires removing about 0.022" of width at the top of the block. Get it as close as you can by sanding and trial-fitting, then glue it in place. Use a gap-filling adhesive like white glue or 5-minute epoxy, in case you don't get an absolutely perfect fit.
Don Stackhouse is offline  
  Reply With Quote
Old 12-20-2012, 01:31 PM   #240
FishHawk
Member
 
Join Date: Dec 2012
Posts: 171
Thanked 0 Times in 0 Posts
iTrader: (0)
Friends: (0)
Default

Thank you again Don. FishHawk
FishHawk is offline  
  Reply With Quote
Old 12-22-2012, 09:47 PM   #241
Stevephoon
Member
 
Stevephoon's Avatar
 
Join Date: Aug 2005
Location: White Lake, MI
Posts: 949
View Stevephoon's Gallery67
Thanked 98 Times in 97 Posts
Club: United Flying Organization
iTrader: (0)
Friends: (7)
Default

I just received my new wing kit! Thank you to Joe and Don for getting this out so fast! I will not be able to start on it until after Christmas and the covering I used is still out of stock at HobbyPartz. The only other transparent purple/violet I see around that looks to be the same shade is Ultracote Lite, Trans Purple.

http://www.horizonhobby.com/products...purple-HANU968

I'm not sure if it's really the same shade or not, but it seems close in the pictures. I was hoping I didn't need to recover the tail that was not damaged. We shall see...

Steve

Growing the fleet!
Stevephoon is offline  
  Reply With Quote
Old 12-23-2012, 12:48 AM   #242
Don Stackhouse
Don Stackhouse
 
Join Date: Sep 2012
Location: Bradford, Ohio, USA
Posts: 130
Thanked 22 Times in 19 Posts
Club: Flyn' Wolverines, UVFF
iTrader: (0)
Friends: (0)
Default

Ultracoat Lite is OK for the fuselage and tail, marginally OK for the outer panels of the wing, but do NOT use it on the inboard wing panels, you could have flutter problems.
Don Stackhouse is offline  
  Reply With Quote
Old 12-23-2012, 01:22 AM   #243
Dimeflyer
Member
 
Join Date: Apr 2010
Location: Southweastern Pa.
Posts: 747
Thanked 57 Times in 55 Posts
Club: haven't picked one yet ?
iTrader: (0)
Friends: (2)
Default

Fluter not god for planes , may cause wings or fusealoge to break under stress ?
George
Dimeflyer is offline  
  Reply With Quote
Old 12-23-2012, 01:43 AM   #244
Don Stackhouse
Don Stackhouse
 
Join Date: Sep 2012
Location: Bradford, Ohio, USA
Posts: 130
Thanked 22 Times in 19 Posts
Club: Flyn' Wolverines, UVFF
iTrader: (0)
Friends: (0)
Default

Flutter is good for flags. Not good for airplanes.
Don Stackhouse is offline  
  Reply With Quote
Old 12-25-2012, 03:07 AM   #245
Neko
Member
 
Join Date: Aug 2007
Location: Chicago Area
Posts: 110
Thanked 9 Times in 8 Posts
iTrader: (0)
Friends: (0)
Default

Don,

Can you comment on the Chrysalis compared to the Stevens Helium? The Chrysalis is half the price! May I ask what makes the difference? I've never worked with fiberglass before. Is this going to be difficult?

Thanks,

David
Neko is offline  
  Reply With Quote
Old 12-25-2012, 04:53 AM   #246
Don Stackhouse
Don Stackhouse
 
Join Date: Sep 2012
Location: Bradford, Ohio, USA
Posts: 130
Thanked 22 Times in 19 Posts
Club: Flyn' Wolverines, UVFF
iTrader: (0)
Friends: (0)
Default

The price is lower because we do our best to keep our products as accessible as possible, and because a long time ago (around 2007) our webmaster left to serve in Afghanistan, took all the passwords and update procedures with him, and we have not been able to update the website since then. We are presently working on fixing that problem.

We have NEVER raised the price on the Chrysalis series kits since we put them in production back in the mid 90's. We have managed to hold the price, although it's been tough. Obviously that can't go on forever, but we will do our best to keep the kits as affordable as possible.

I have not flown the Helium, but from what I hear it builds well and flies well. Just looking at the design, I would expect it to float well, but not range and penetrate as well as the Chrysalis.

The amount of fiberglass work on the Chrysalis is just a few reinforcing patches and tapes. It isn't difficult, and we can talk you through it if you have questions. There are also a number of forums (including this one) where we have covered the techniques and special tricks. It isn't difficult, and it's something that all model builders need to know how to do.
Don Stackhouse is offline  
  Reply With Quote
Old 12-25-2012, 11:14 PM   #247
Dimeflyer
Member
 
Join Date: Apr 2010
Location: Southweastern Pa.
Posts: 747
Thanked 57 Times in 55 Posts
Club: haven't picked one yet ?
iTrader: (0)
Friends: (2)
Default

Neko
Don is good to his word guy !
I have seen the kits he sells they are well thought out and fly great if you are carefull in construction and fly safely !!
George
Dimeflyer is offline  
  Reply With Quote
Old 12-25-2012, 11:56 PM   #248
Neko
Member
 
Join Date: Aug 2007
Location: Chicago Area
Posts: 110
Thanked 9 Times in 8 Posts
iTrader: (0)
Friends: (0)
Default

Ordered. Can't wait. Haven't built a plane in probably 15 years.
Neko is offline  
  Reply With Quote
Old 12-26-2012, 10:26 PM   #249
Dimeflyer
Member
 
Join Date: Apr 2010
Location: Southweastern Pa.
Posts: 747
Thanked 57 Times in 55 Posts
Club: haven't picked one yet ?
iTrader: (0)
Friends: (2)
Default

Why you wait so long guy ?
George
Dimeflyer is offline  
  Reply With Quote
Old 01-03-2013, 01:13 PM   #250
FishHawk
Member
 
Join Date: Dec 2012
Posts: 171
Thanked 0 Times in 0 Posts
iTrader: (0)
Friends: (0)
Default Back building the wing.

I'm back building the wings , which I started before the fuselage. This build is a good Winter project. FishHawk
FishHawk is offline  
  Reply With Quote
Reply

  WattFlyer RC Electric Flight Forums - Discuss radio control eflight > Electric R/C Airplanes > Scratch and Kit Built Aircraft

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Model Airplane Building Clinic >> Begins 29 Sep. All Skill Levels Welcomed Murocflyer General Electric Discussions 282 11-04-2012 10:35 AM
#27 Model Airplane Building Clinic >> Mimi DLG 1 meter polyhedral<< aeroknot Hi-Performance and Sailplanes 94 10-23-2012 12:59 AM
Model Airplane Building Clinic Murocflyer Scratch and Kit Built Aircraft 2 10-01-2012 10:53 PM
Model Airplane Building Clinic - - Instructors Needed Murocflyer ParkFlyers 9 09-21-2012 01:55 AM
#28 Model Airplane Building Clinic >> Dick's Dream Unclebuck21228 Scratch and Kit Built Aircraft 10 09-19-2012 01:55 PM


All times are GMT +1. The time now is 01:26 AM.


Powered by: vBulletin
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 WattfFlyer.com
RCU Eflight HQ

Charities we support Select: Yorkie Rescue  ::  Crohn's & Colitis Foundation



Page generated in 0.78196 seconds with 73 queries