Home > VansAirForceForums

- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics

Go Back   VAF Forums > Model Specific > RV-14
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Thread Tools Search this Thread Display Modes
Old 06-03-2018, 10:46 AM
Reflex Reflex is offline
Join Date: Jan 2015
Location: Kansas
Posts: 97
Default Elevator Throws...Another Question...

Today in checking the throws on my left elevator, I've run into an issue. Like many others here, I'm not getting the down throw depicted in the manual.

In searching the forum, I've come across several potential solutions, but have seen several that could be considered questionable. With that in mind, I'm hoping that you might take a look at the issue below and educate me on the best course of action.

Issue: Left elevator has a throw of only 23.5˚ in the down position when against the rear stabilizer spar. A throw of 25˚ +0˚ -.5˚ is called out in the manual.

  • 1 5/8" Minimum distance between spar web and torque tube met (1 11/16")
  • Rod end bearings are precisely 13/16" from spar to center of hinge point
  • Electronic level has been "zeroed" before taking measurement
  • Control surface begins in trail with counterbalance arm flush at 0˚

Found this posted by Scott on another thread:
Adjusting the rod end (elevator hinge points) lengths to vary the amount of deflection relative to the elevator stops is not recommended.

Any opinions expressed in this message are my own and not necessarily those of my employer.

Scott McDaniels
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
Reply With Quote
Pictures below:


Dues Paid for 2018
Empennage Complete
Getting Ready to Close Wings

Last edited by Reflex : 06-03-2018 at 10:49 AM.
Reply With Quote
Old 06-03-2018, 02:39 PM
Av8rRob's Avatar
Av8rRob Av8rRob is offline
Join Date: May 2005
Posts: 211

My rodends had to be backed out a turn or two to prevent rubbing of the elevator leading edge to a rivet on the hs spar. Then when is movement was completely free I had no issues with range of motion
Rob Lasater
Rv-14 still workin
Paid nov 2018
Reply With Quote
Old 06-03-2018, 07:41 PM
Tom023 Tom023 is offline
Join Date: Jul 2011
Location: Cypress, TX
Posts: 255

Check the Control Delections Letter on the Vans website. Down limits are between 20 and 25, so you are right in the middle of acceptable range.
RV14A #140083
Down to last 5%.
2017 Donation
Reply With Quote
Old 06-04-2018, 12:08 AM
Bob Kuykendall's Avatar
Bob Kuykendall Bob Kuykendall is offline
Join Date: Sep 2006
Location: Douglas Flat, CA
Posts: 577

Originally Posted by Reflex View Post
...A throw of 25˚ +0˚ -.5˚ is called out in the manual...
I'm pretty sure nothing in the Vans world except wing twist (or lack thereof) is specified down to the fractional degree. As suggested Tom023, I suspect that that's -5˚, not -.5˚.

--Bob K.
Bob Kuykendall
HP-24 kit sailplane
EAA Technical Counselor
Reply With Quote

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 05:17 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.