VansAirForceForums  
Home > VansAirForceForums

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

Keep VAF Going
w/a Donation






VAF on Twitter:
@VansAirForceNet


Go Back   VAF Forums > Model Specific > RV-12/RV-12iS
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 02-07-2023, 05:11 PM
rgmwa rgmwa is offline
 
Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,751
Default

Maybe Scott or Greg could comment on what the benefits of balancing are? Does balancing reduce the flutter margin compared to a nose heavy stabilator with more mass. Why now with current kits and not the earlier ones. I don’t have an issue with balancing but would just like to understand the reason.
__________________
RV-12LR 912ULS 120346
Reply With Quote
  #12  
Old 02-07-2023, 08:32 PM
rmac1376 rmac1376 is offline
 
Join Date: Sep 2009
Location: Newport Beach, CA
Posts: 7
Default N247RQ SLSA

Any recommendations for an A&P in the Southern California area to accomplish the last 5 AD's RV-12is? Plane is at KSNA. Rod MacDonald rod@calventuremanagement.com
Reply With Quote
  #13  
Old 02-10-2023, 06:11 PM
bobg56 bobg56 is offline
 
Join Date: Nov 2018
Location: Peachtree City, GA
Posts: 302
Default

I did mine today, I removed 7.8 oz for a perfect balance...I'm interested to see if there's any notice able difference in flight, especially auto pilot altitude control, I always had a bit of oscillation.
Reply With Quote
  #14  
Old 02-11-2023, 02:38 PM
rtlongdon's Avatar
rtlongdon rtlongdon is offline
 
Join Date: Jul 2020
Location: Stanwood, WA
Posts: 69
Default

Another data point (for whatever it's worth), I had to remove 28 grams at a point half way between the middle clamp bolt and the unused bolt hole at the end of the weights.

Measured downforce of the trim actuator arm = 88.6 grams.

Wing rack with a 2x10 clamped to the top and sticking out about 28" worked great to suspend the stabilator for balancing.
__________________
---------------------------
Russ Longdon
RV-12, N712WE (purchased flying)
KAWO
Reply With Quote
  #15  
Old 02-13-2023, 03:45 PM
bobg56 bobg56 is offline
 
Join Date: Nov 2018
Location: Peachtree City, GA
Posts: 302
Default

Flew today and noticed that my auto pilot holds altitude much better than with an unbalanced stabilizer. I was happily surprised. Didn't notice any difference when hand flying.
Reply With Quote
  #16  
Old 03-16-2023, 06:55 PM
P51krause P51krause is offline
 
Join Date: Jan 2019
Location: Camarillo
Posts: 22
Default

Any one crawled in the tail cone instead of removing the stabilator? Thinking I might try that approach. Give my kid a job to do, so I donít have to break my back. Just curious if anyone has done this way. Thanks
Reply With Quote
  #17  
Old 03-16-2023, 07:37 PM
rjtjrt rjtjrt is offline
 
Join Date: Mar 2006
Location: Australia
Posts: 811
Default

Quote:
Originally Posted by P51krause View Post
Any one crawled in the tail cone instead of removing the stabilator? Thinking I might try that approach. Give my kid a job to do, so I donít have to break my back. Just curious if anyone has done this way. Thanks
Michael
There have been quite a few posts from people who did crawl in the tail cone (or got someone else to) in this longer thread.

https://vansairforce.net/community/s...d.php?t=213575

Hope this helps.
John
Reply With Quote
  #18  
Old 03-17-2023, 08:53 AM
thiggins thiggins is offline
 
Join Date: Mar 2020
Location: Saluda,NC
Posts: 225
Default

Quote:
Originally Posted by P51krause View Post
Any one crawled in the tail cone instead of removing the stabilator? Thinking I might try that approach. Give my kid a job to do, so I donít have to break my back. Just curious if anyone has done this way. Thanks
I did it. The two bolts holding the counterweight tube arenít easy to remove, but with the correct combination of smaller tools, it is doable. (We did not remove the stabilator.) Itís not terrible, just be sure to use boards to support your weight in the empennage, and something appropriate under the tail to hold it up. I would not do this alone.
Attached Thumbnails
Click image for larger version

Name:	654E5534-668C-45AF-A1E7-4AFB7CA7ABF3.jpg
Views:	69
Size:	370.3 KB
ID:	39789  
__________________
Donation 2023 paid
ASEL INST COMM Tail-wheeler
RV-12iS builder (Empennage complete, Wings complete!, Fuselage well under way!, finish kit under way!, Garmin avionics under way!, engine ordered, shop out of order )
Got a hangar, and moved some large pieces in!
https://eaabuilderslog.org/?blproject&proj=7buPHH99v

Last edited by thiggins : 03-17-2023 at 08:58 AM.
Reply With Quote
  #19  
Old 03-17-2023, 09:47 AM
Bob Y Bob Y is offline
 
Join Date: Jul 2017
Location: Piedmont, SC
Posts: 503
Default

Quote:
Originally Posted by P51krause View Post
Any one crawled in the tail cone instead of removing the stabilator? Thinking I might try that approach. Give my kid a job to do, so I donít have to break my back. Just curious if anyone has done this way. Thanks
If you mean perform all of the work inside the tail cone without removing the counterbalance arm, Iíve not seen any posts regarding performing it using this method. Drilling the counterbalance arm inside the tail cone would be problematic for me. Like Tim posted, Iíve helped another builder do his by removing just the arm.
__________________
Bob Y - builder 12iS
N569TT first flight 2/9/2020
#121047
Reply With Quote
  #20  
Old 03-17-2023, 11:33 AM
P51krause P51krause is offline
 
Join Date: Jan 2019
Location: Camarillo
Posts: 22
Default

Quote:
Originally Posted by thiggins View Post
I did it. The two bolts holding the counterweight tube arenít easy to remove, but with the correct combination of smaller tools, it is doable. (We did not remove the stabilator.) Itís not terrible, just be sure to use boards to support your weight in the empennage, and something appropriate under the tail to hold it up. I would not do this alone.
Ok great. I just plan on using the boards from last years SB 00053 crawl back and remove the counterweight and River the HS -01234ís on on the table outside and reinstall it. Thank you for the pics too.
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 04:29 PM.


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.