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.

  #1  
Old 04-22-2018, 12:42 AM
Bootscooter's Avatar
Bootscooter Bootscooter is offline
 
Join Date: Jun 2011
Location: Sydney, Australia
Posts: 66
Default First Flight Question

Hi All

This one is for those that have gone before me.

The first flight of my RV14 is not far off, and I just wanted to get an idea of what I can expect regarding handling quality.

I notice that a lot of RV14’s have a permanent trim tab on the Right hand bottom side of the rudder, on the opposite side to my RV7 which would indicate the left rudder is generally required. Is this the case for all RV14’s?? Is there any other handling qualities that could be expected?

I know there will be variations from build to build but this one is pretty much a Cookie cutter build as per the plans with IO-390 and hartzell BA.

Rgs Chad
__________________
Chad Boot
RV8 Showplanes Fastback in progress
RV14 140331 VH-VNX. Flying/Sold Winner Concourse D'Elegance SAAA Narromine 2018
RV10 Standard Fuselage Complete
RV10 Empennage complete
RV-7 Flying VH-VNZ
Tech Councillor - Sports Aircraft Assn of Australia


2021 Dues Paid

Last edited by Bootscooter : 04-22-2018 at 12:45 AM.
Reply With Quote
  #2  
Old 04-22-2018, 08:25 AM
TASEsq TASEsq is offline
 
Join Date: Aug 2017
Location: Melbourne, Australia
Posts: 360
Default

Good luck!! Exciting times.
__________________
___________
Trent Stewart
Melbourne, Australia
http://www.tasrv14.blogspot.com.au/
Reply With Quote
  #3  
Old 04-22-2018, 11:17 AM
KeithB's Avatar
KeithB KeithB is offline
 
Join Date: Mar 2014
Location: Granbury, TX
Posts: 314
Default

My 14A required a rudder trim tab on the left side (equivalent of right rudder input). I flew off the entire Phase 1 before adding the rudder tab so it?s not a handling issue. I had 300+hours in an RV6A before the 14, no model-specific transition training, and first flight was a breeze. I found the 14 much easier to land with more stable but equally responsive handling in all conditions.

Enjoy that first flight day!
__________________
Keith Brown

RV-14A Builder - kit #136 (complete) and #770 (in process)
N314KC - First flight Mar 8, 2017, 24th in the air, >750 hrs
XP-400 Aero Sport Power, replaced with Lyc Thunderbolt 390
RV-6A sold
Sport Pilot (weight-shift control) - Airborne XT912
Dues paid 9/2021
Reply With Quote
  #4  
Old 04-23-2018, 06:29 PM
Aussieflyer Aussieflyer is offline
 
Join Date: Jan 2015
Location: Redcliffe, Queensland, Australia
Posts: 86
Default Rudder Trim

My 14A also required the fitment of a small rudder trim on the right hand side. The balance ball was just touching the right hand edge of the balance line in cruise. Not a big deal, it was out just a fraction. Fixed now.

It is will be interesting to see if this is a continuing trend amongst 14's.

Others out there give us your feed back. If this becomes the norm amongst 14's then builders following will have an opportunity to include the trim in their build and wont have to worry about painting the rudder again.
Reply With Quote
  #5  
Old 04-23-2018, 07:27 PM
czechsix's Avatar
czechsix czechsix is offline
 
Join Date: Mar 2006
Location: Spring Hill, KS
Posts: 389
Default

Quote:
Originally Posted by Aussieflyer View Post
My 14A also required the fitment of a small rudder trim on the right hand side. The balance ball was just touching the right hand edge of the balance line in cruise. Not a big deal, it was out just a fraction. Fixed now.
Are you talking about a tab or a wedge on your rudder? I believe if you put a wedge on the right side of the rudder trailing edge, it will provide nose left trim moment. You would have needed the opposite if the ball was touching the right edge of the line (you 'step on the ball' to center it, so you would have needed nose right trim).

FWIW, most other RV models I've looked at tend to need nose right rudder trim. On the -14, the forward mounting bolt for the vertical stab is offset a bit to the left, which will provide nose right trim (presumably with the intention of eliminating any need for a trim tab in cruise). It appears maybe a bit too much nose right trim, because the three RV-14's that I've seen with trim tabs (including Van's demo bird) have tabs providing nose left trim.
__________________
Mark Navratil
Spring Hill, KS
RV-8A N2D #80583 - built/flew/sold
RV-14A #140017 - wings complete, empacone in progress...
Reply With Quote
  #6  
Old 04-23-2018, 08:12 PM
Bootscooter's Avatar
Bootscooter Bootscooter is offline
 
Join Date: Jun 2011
Location: Sydney, Australia
Posts: 66
Default

Quote:
Originally Posted by czechsix View Post
Are you talking about a tab or a wedge on your rudder? I believe if you put a wedge on the right side of the rudder trailing edge, it will provide nose left trim moment. You would have needed the opposite if the ball was touching the right edge of the line (you 'step on the ball' to center it, so you would have needed nose right trim).

FWIW, most other RV models I've looked at tend to need nose right rudder trim. On the -14, the forward mounting bolt for the vertical stab is offset a bit to the left, which will provide nose right trim (presumably with the intention of eliminating any need for a trim tab in cruise). It appears maybe a bit too much nose right trim, because the three RV-14's that I've seen with trim tabs (including Van's demo bird) have tabs providing nose left trim.
I am talking about the wedge, as I too have noticed all the RV14's (incl Van’s demo) with the wedge on the bottom RHS of the rudder. I primarily wanted to know for what to expect inflight, but it does seem odd that if a wedge is needed at all, it happens to be on the RHS.
__________________
Chad Boot
RV8 Showplanes Fastback in progress
RV14 140331 VH-VNX. Flying/Sold Winner Concourse D'Elegance SAAA Narromine 2018
RV10 Standard Fuselage Complete
RV10 Empennage complete
RV-7 Flying VH-VNZ
Tech Councillor - Sports Aircraft Assn of Australia


2021 Dues Paid

Last edited by Bootscooter : 04-23-2018 at 08:57 PM.
Reply With Quote
  #7  
Old 04-23-2018, 11:23 PM
n982sx n982sx is offline
 
Join Date: Apr 2010
Location: Chicago, IL
Posts: 383
Default

I've had no need for a wedge for trim on the rudder on my 14A.

160 hours and she flies with the ball centered in cruise. The offset of the VS seems to be just right on mine.
__________________
Bob Meyers

Built and Flying RV-14A N626KM SN 140093 http://n626km.com
Built and Flying Sonex N982SX http://n982sx.com
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 04:45 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.