VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.






VAF on Twitter:
@VansAirForceNet


Go Back   VAF Forums > Main > Safety
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #201  
Old 08-29-2022, 01:05 PM
Taltruda Taltruda is online now
 
Join Date: Oct 2017
Location: Las Vegas, NV
Posts: 1,391
Default

Quote:
Originally Posted by jrs14855 View Post
The standard is ground vibration testing, not inflight testing with the risk of losing the airplane and possibly the test pilot. Ground vibration testing is very expensive.
Kermit Weeks has a great video doing this to his GeeBee..
https://youtu.be/MtiN48ePYwA
__________________
Tom
Las Vegas
RV-4 flying…
RV-8 empenage finished 10-2020

Wings Started.. 11-2020
Reply With Quote
  #202  
Old 08-29-2022, 01:41 PM
Tandem46's Avatar
Tandem46 Tandem46 is offline
 
Join Date: Jan 2005
Location: Colorado
Posts: 712
Default

Quote:
Originally Posted by Taltruda View Post
Kermit Weeks has a great video doing this to his GeeBee..
https://youtu.be/MtiN48ePYwA
Part Two:
https://www.youtube.com/watch?v=ZymXOrPL1CQ
__________________
RV-7 Flying since 2004
IO-360 1 LSE & WW200RV
1,200 hrs+
Reply With Quote
  #203  
Old 08-29-2022, 01:45 PM
jrs14855 jrs14855 is offline
 
Join Date: Apr 2008
Location: Lake Havasu City AZ
Posts: 2,903
Default Flutter Testing

Kermit got involved in flutter testing after the loss of a close friend in a flutter accident in a aerobatic monoplane. After the recommended modifications, similar airplanes were trouble free except for one accident in a airplane with a bigger engine and different wing.
A description of the testing and the fix was published in Sport Aerobatics, I think in the early 80's.
Reply With Quote
  #204  
Old 08-29-2022, 01:51 PM
jrs14855 jrs14855 is offline
 
Join Date: Apr 2008
Location: Lake Havasu City AZ
Posts: 2,903
Default Gee Bee

The first racing Gee Bee was the Z. The original was lost in a fatal accident during a speed record attempt. After years of speculation it is now believed, as a result of the testing that Kermit had done, that it was aileron flutter. Kermit also owns the Gee Bee R which was built by Delmar Benjamin and Steve Wolf.
Another R is getting close to completion in AZ.
Reply With Quote
  #205  
Old 09-03-2022, 08:27 PM
Walt's Avatar
Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 6,920
Default

As promised, original 7/8 rudder installed.
If nothing else I do think the smaller size looks better!

.
__________________
Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags, MTV-9 prop
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154

Last edited by Walt : 09-03-2022 at 09:04 PM.
Reply With Quote
  #206  
Old 09-03-2022, 08:49 PM
mfleming's Avatar
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 991
Default

Quote:
Originally Posted by Walt View Post
As promised, original 8 rudder installed.
If nothing else I do think the smaller size looks better!

.
Congratulations!
Is the current -8 rudder exactly the same as the original -7 rudder?
__________________
Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Started 11/2016
Empennage completed 11/2016
Ailerons and flaps completed 3/2017.
Wings completed 12/2017
Started on QB fuselage 01/2018
Sliding canopy mostly completed 10/2020
Wiring and Avionics harness completed 9/2/2021
FWF Completed 11/1/2022
Final assembly Started 11/10/2022
Wings on 11/12/2022

N526RM

Donated for 2022 and so should you
Reply With Quote
  #207  
Old 09-03-2022, 09:03 PM
Walt's Avatar
Walt Walt is offline
 
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 6,920
Default

Quote:
Originally Posted by mfleming View Post
Congratulations!
Is the current -8 rudder exactly the same as the original -7 rudder?
Yes, to the best of my knowledge.
__________________
Walt Aronow, DFW, TX (52F)

EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 2000+ hrs, New Titan IO-370, Bendix Mags, MTV-9 prop
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
Reply With Quote
  #208  
Old 09-03-2022, 09:05 PM
BillL's Avatar
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
Posts: 6,850
Default

Quote:
Originally Posted by Walt View Post
Yes, to the best of my knowledge.
I will check my original drawings and report back with evidence.
__________________
Bill
RV-7
Reply With Quote
  #209  
Old 09-04-2022, 07:45 AM
jcarne's Avatar
jcarne jcarne is offline
 
Join Date: Jul 2016
Location: Worland, Wyoming
Posts: 2,346
Default

Walt, been flying with it yet? How does it feel/handle?
__________________
Jereme Carne
PPL
RV-7A Flying as of 03/2021
Reply With Quote
  #210  
Old 09-04-2022, 10:13 AM
mfleming's Avatar
mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 991
Default

Quote:
Originally Posted by BillL View Post
I will check my original drawings and report back with evidence.
Any luck Bill.

When the insurance company asks if the -7 was built with any non Vans approved mods, it would be helpful to say no.
__________________
Michael Fleming
Joseph, OR
sagriver at icloud dot com

RV-7 Slider #74572
Started 11/2016
Empennage completed 11/2016
Ailerons and flaps completed 3/2017.
Wings completed 12/2017
Started on QB fuselage 01/2018
Sliding canopy mostly completed 10/2020
Wiring and Avionics harness completed 9/2/2021
FWF Completed 11/1/2022
Final assembly Started 11/10/2022
Wings on 11/12/2022

N526RM

Donated for 2022 and so should you
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 12:26 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.