Welcome to The FlyingGiants! - please login or click this bar to join our community...

HobbyKing.com New Products Flash Sale
 

Welcome to The FlyingGiants Community! We're all about fun, and inside you'll find the greatest, friendliest, and most helpful group of people around! If this is your first time visiting, please check out site, and click here to sign up! We hope to see you soon!!

Go Back   FlyingGiants > Giant Scale Planes > General Discussion
Forgot your password? Create a new account


Reply
 
Thread Tools
Old 06-25-2007, 09:07 PM   #1
Ryans Rebel
Bad-ass Super Contributer!

 
Ryans Rebel's Avatar
 
Join Date: Feb 2006
Location: New Iberia, LA
Age: 37
Posts: 1,249
Awards Showcase
FlyingGiants Good Dude Award: For stepping up to the plate, being a part of a fundraising effort for a good cause. Thank you. - Issue reason: Thank you very much for helping with the recent donation drive. 
Total Awards: 1
Default Canopy vibrating in flight - needs reinforcement.

I am having an issue where my canopy is vibrating badly in flight. Not the hatch to the fuse but the actual canopy itself. It is a longer canopy and the sides are allowed to flex quite a bit. It only vibrates at certain throttle settings but when it does vibrate it is rather loud compared to the noise level of the airplane/engine combo.

Question is has anyone seen or done themselves some bracing inside the canopy to reduce vibration of the canopy itself? I'm thinking of glueing some CF rods from side to side inside the canopy and reducing the unsupported span by half. Maybe that will eliminate the vibration.

Any other thoughts???

Last edited by Ryans Rebel; 06-25-2007 at 09:12 PM.
Ryans Rebel is offline   Reply With Quote
Old 06-25-2007, 09:09 PM   #2
Zee
Bad-ass Super Contributer!
 
Zee's Avatar
 
Join Date: Jan 2007
Location: Colorado Springs, Colorado
Age: 66
Posts: 440
Default Re: Canopy vibrating in flight - needs reinforcement.

How about reducing the vibration.
Zee is offline   Reply With Quote
Old 06-25-2007, 09:11 PM   #3
Ryans Rebel
Bad-ass Super Contributer!

 
Ryans Rebel's Avatar
 
Join Date: Feb 2006
Location: New Iberia, LA
Age: 37
Posts: 1,249
Awards Showcase
FlyingGiants Good Dude Award: For stepping up to the plate, being a part of a fundraising effort for a good cause. Thank you. - Issue reason: Thank you very much for helping with the recent donation drive. 
Total Awards: 1
Default Re: Canopy vibrating in flight - needs reinforcement.

Quote: Originally Posted by Zee
View Post
How about reducing the vibration.
Thanks
Ryans Rebel is offline   Reply With Quote
Old 06-25-2007, 09:16 PM   #4
Plane Wrappers
Bad-ass Super Contributer!
 
Plane Wrappers's Avatar
 
Join Date: Jul 2006
Location: Spring Hill, Florida
Posts: 905
Awards Showcase
F3A TEAM USA SUPPORTER!: F3A TEAM USA SUPPORTER! - Issue reason: You are BAD ASS, Thank you for supporting the 2009 F3A TEAM USA! 
Total Awards: 1
Default Re: Canopy vibrating in flight - needs reinforcement.

Try painting the inside of the canopy with a coat of Clear Polyurethane.
BTW,.....What plane and motor?
__________________
PlaneWrappers.com
Plane Wrappers is offline   Reply With Quote
Old 06-25-2007, 09:32 PM   #5
Ryans Rebel
Bad-ass Super Contributer!

 
Ryans Rebel's Avatar
 
Join Date: Feb 2006
Location: New Iberia, LA
Age: 37
Posts: 1,249
Awards Showcase
FlyingGiants Good Dude Award: For stepping up to the plate, being a part of a fundraising effort for a good cause. Thank you. - Issue reason: Thank you very much for helping with the recent donation drive. 
Total Awards: 1
Default Re: Canopy vibrating in flight - needs reinforcement.

Quote: Originally Posted by Plane Wrappers
View Post
Try painting the inside of the canopy with a coat of Clear Polyurethane.
BTW,.....What plane and motor?
Can not easily paint the inside of the canopy. It is an Extra 300 - 40% and a DA-150 on MTW canisters w/ a 3-blade prop.
Ryans Rebel is offline   Reply With Quote
Old 06-25-2007, 09:44 PM   #6
3ddd
tissue ? cry baby jack wagon!
 
3ddd's Avatar
 
Join Date: Jan 2006
Location: pyote,texas
Age: 58
Posts: 2,652
Default Re: Canopy vibrating in flight - needs reinforcement.

if you are still alittle rich on lowend this will cause a rough idle and shake things up pretty good in the mid to low throttle settings
__________________
Life's journey is not to arrive at the grave
>safely and in a well preserved body,but rather to skid in
> sideways,totally screwed up,worn out,shouting,"oh damn what a fine ride! AMA 98634
> HEY I GOT A DIVORCE----HELL YEA > Futaba,
FROMECO:a good way to get a charge out of life
,,3w all the way for a good day

3ddd is offline   Reply With Quote
Old 06-25-2007, 10:52 PM   #7
innovator
Bad-ass Super Contributer!
 
Join Date: Jan 2006
Location: Green Bay, Wisconsin
Age: 40
Posts: 308
Default Re: Canopy vibrating in flight - needs reinforcement.

Duct Tape??

Goingvert used it on his canopy, looked awesome.
innovator is offline   Reply With Quote
Old 06-25-2007, 11:02 PM   #8
Stainless Skills
Bad-ass Super Contributer!
 
Stainless Skills's Avatar
 
Join Date: Jul 2006
Posts: 801
Default Re: Canopy vibrating in flight - needs reinforcement.

anything carbon fiber or fiberglass should work.

and foam, just common sense stuff.
Stainless Skills is offline   Reply With Quote
Old 06-25-2007, 11:14 PM   #9
Flyinhigh
Barking-Tip Bandit
 
Flyinhigh's Avatar
 
Join Date: Jan 2006
Location: Austin, TEXAS
Posts: 571
Default Re: Canopy vibrating in flight - needs reinforcement.

I used one of the Carbon-fiber/Balsa forms from the rudder kit in my Comp-ARF installed the same way you are describing. Just bridged the canopy sides right behind the gas tank to help strengthen the canaopy. I don't have a vibration issue, but I thought this appeared to be a weak point - Also, Kelder, from DOD, did a fantastic build thread on the Comp-ARF Giles and shows a similar install of a balsa bridge in the same location so I think this may be a common practice. Should work well for you - at least a good start.

Sorry about the pic detail - I couldn't get it to uplaod any bigger. If you look close behind the gas tank in the canopy, you can see the bridge I installed. Just a dab of JB-Weld on each side ....
Attached Thumbnails
  • Click image for larger version

Name:	knife.jpg
Views:	34
Size:	59.2 KB
ID:	56933 59.2 KB · Views: 34

Flyinhigh is offline   Reply With Quote
Old 06-25-2007, 11:30 PM   #10
T. Bob
Major League Deadbeat
 
T. Bob's Avatar
 
Join Date: Jan 2006
Location: Munster Indiana
Posts: 2,223
Awards Showcase
FlyingGiants TBob Award!: Much coveted award for providing continued excellence in forum posting. - Issue reason: Excellence in forum posting! You are the proud recipient of the much coveted Tbob award! FlyingGiants Good Dude Award: For stepping up to the plate, being a part of a fundraising effort for a good cause. Thank you. - Issue reason: Thank you very much for helping with the recent donation drive. 
Total Awards: 2
Default Re: Canopy vibrating in flight - needs reinforcement.

I would use just a little bit of Titanium
__________________
Guys beware of wgeffon...

A very unreasonable person and untrustworthy, becareful of any transaction made with him you will regret it..........
T. Bob is offline   Reply With Quote
Old 06-26-2007, 04:14 PM   #11
as722
Bad-ass Super Contributer!
 
Join Date: Jan 2006
Location: Pennsyvania
Age: 38
Posts: 1,019
Awards Showcase
FlyingGiants Good Dude Award: For stepping up to the plate, being a part of a fundraising effort for a good cause. Thank you. - Issue reason: Thank you very much for helping with the recent donation drive. 
Total Awards: 1
Default Re: Canopy vibrating in flight - needs reinforcement.

Install some soft mounts on the canopy or leave it off.
as722 is offline   Reply With Quote
Old 06-26-2007, 05:12 PM   #12
thewrap
I had it, but then I lost it.
 
thewrap's Avatar
 
Join Date: Feb 2006
Location: Highland Village Texas
Age: 19
Posts: 1,863
Default Re: Canopy vibrating in flight - needs reinforcement.

Can you send a pic. That might give more ideas to solutions.
__________________
Who knows?
thewrap is offline   Reply With Quote
Old 06-26-2007, 10:58 PM   #13
snap a saurus
Bad-ass Super Contributer!
 
snap a saurus's Avatar
 
Join Date: Jan 2006
Location: Swansea MA USA
Posts: 7,536
Awards Showcase
F3A TEAM USA SUPPORTER!: F3A TEAM USA SUPPORTER! - Issue reason: You are BAD ASS, Thank you for supporting the 2009 F3A TEAM USA! Japaleno Bad Ass: This is to say thank you for donating  funds to help bring Wesse to the 09 Joe Nall! - Issue reason: You da Man! FlyingGiants Good Dude Award: For stepping up to the plate, being a part of a fundraising effort for a good cause. Thank you. - Issue reason: Thank you very much for helping with the recent donation drive. Wesse's Haaard Man Award!: For showing our community the joy of eating jap-a-lin-os and being a haaaard man! Wesse Power! - Issue reason: You're a haaaaaaard man! 
Total Awards: 4
Default Re: Canopy vibrating in flight - needs reinforcement.

I recommend flying without the canopy just to be sure that's where the noise is coming from
snap a saurus is offline   Reply With Quote
Old 06-26-2007, 11:14 PM   #14
Ryans Rebel
Bad-ass Super Contributer!

 
Ryans Rebel's Avatar
 
Join Date: Feb 2006
Location: New Iberia, LA
Age: 37
Posts: 1,249
Awards Showcase
FlyingGiants Good Dude Award: For stepping up to the plate, being a part of a fundraising effort for a good cause. Thank you. - Issue reason: Thank you very much for helping with the recent donation drive. 
Total Awards: 1
Default Re: Canopy vibrating in flight - needs reinforcement.

It's fixed. I taped a balsa stick between the two sides effectively cutting the unsupported span in half. I flew it today and about 95% of the vibration and noise is gone. This is temporary of course. A final fix is in the works for after the NATS.
Attached Thumbnails
  • Click image for larger version

Name:	DSC04992.JPG
Views:	10
Size:	586.9 KB
ID:	57104 586.9 KB · Views: 10

  • Click image for larger version

Name:	DSC04993.JPG
Views:	15
Size:	574.7 KB
ID:	57105 574.7 KB · Views: 15

  • Click image for larger version

Name:	DSC04995.JPG
Views:	14
Size:	595.7 KB
ID:	57106 595.7 KB · Views: 14

Ryans Rebel is offline   Reply With Quote
Old 06-26-2007, 11:43 PM   #15
T. Bob
Major League Deadbeat
 
T. Bob's Avatar
 
Join Date: Jan 2006
Location: Munster Indiana
Posts: 2,223
Awards Showcase
FlyingGiants TBob Award!: Much coveted award for providing continued excellence in forum posting. - Issue reason: Excellence in forum posting! You are the proud recipient of the much coveted Tbob award! FlyingGiants Good Dude Award: For stepping up to the plate, being a part of a fundraising effort for a good cause. Thank you. - Issue reason: Thank you very much for helping with the recent donation drive. 
Total Awards: 2
Default Re: Canopy vibrating in flight - needs reinforcement.

Gay fix
I would be more worried about the pilot and panel.


man in a boat
__________________
Guys beware of wgeffon...

A very unreasonable person and untrustworthy, becareful of any transaction made with him you will regret it..........
T. Bob is offline   Reply With Quote
Reply



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


Similar Threads
Thread Thread Starter Forum Replies Last Post
JR-9303 2.4 Field Results 1bwana1 Radios 186 08-22-2011 03:23 AM
Giant Jargon - The FG Dictionary wizard General Discussion 114 08-17-2010 01:53 PM
MAIDEN FLIGHT! COMPLETE SUCCESS! madmax Leading Edge Homepage Article Discussions 277 10-29-2008 02:08 PM
FLIGHT REPORT Comp-arf 3.1SX and Spektrum notorious_benny Radios 17 10-20-2007 01:50 PM
Heat Deformed Canopy storklappe General Discussion 3 04-27-2007 11:05 PM


All times are GMT -5. The time now is 10:34 AM.

All Flyinggiants.com content copyright 2006-2012 by RCGroups.com, LLC except where otherwise indicated. The Flyinggiants.com logo is a trademark of RCGroups.com, LLC.
Please report any misuse of our trademarks or copyright violations using the contact form.
RCGroups Network :: RCGroups :: The E Zone :: Lift Zone :: RC Power :: Crackroll :: RC Cars

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.