Author Topic: Elevator Control System Stiffness  (Read 400 times)

flyboy9000

  • Subscriber
  • registered
  • *
  • Join Date: Sep 2017
  • Posts: 2
  • My Gallery
  • Engine: 2054CC great plains
  • Sonerai Model: 218
Elevator Control System Stiffness
« on: Oct 01, 2017 »
Hi,
I bought an S2 recently.  It hasn't seen regular flying since the early 80's.  I find the elevator control system stiffer than any other aircraft I’ve flown.  I have tried isolating various components in the system.  The only things left to check are the elevator hinge points and connection point on the elevator horn to push tube.

Is it normal to have some stiffness in the elevator control system on a Sonrai.  The ailerons take no effort at all.

Thanks
john

mhflyit

  • Subscriber
  • registered
  • *
  • Join Date: Jun 2012
  • Posts: 696
  • My Gallery
  • Engine: GP built 2276
  • Sonerai Model: Sonerai IIL
Re: Elevator Control System Stiffness
« Reply #1 on: Oct 02, 2017 »
There shouldn't be any stiffness. Post some pictures of the control linkages for the whole elevator control system if you could so we can take a look. Elevator hinge links are on the 'outside' of the plane so pretty easy to check if there is any interference. Check all eye bolts and lubrication.
« Last Edit: Oct 02, 2017 by mhflyit »
Matt

Mytonic

  • Subscriber
  • registered
  • *
  • Join Date: Mar 2017
  • Posts: 9
  • My Gallery
  • Engine: 2180
  • Sonerai Model: 2l
Re: Elevator Control System Stiffness
« Reply #2 on: Oct 02, 2017 »
disconnect the pushrod from the elevator and then check the elevator for any binding, not uncommon for the spar to be warped and hinges not aligned after welding

flyboy9000

  • Subscriber
  • registered
  • *
  • Join Date: Sep 2017
  • Posts: 2
  • My Gallery
  • Engine: 2054CC great plains
  • Sonerai Model: 218
Re: Elevator Control System Stiffness
« Reply #3 on: Oct 15, 2017 »
Thanks for the reply’s.

I removed the elevator this weekend and cleaned out the 40-year-old grease.  The elevator now moves nice and smooth :)

 

Recent Topics

Magneto Box by mtdanet
Nov 15, 2017

Cowling problems by mtdanet
Nov 15, 2017

14998 Zenith carb on a 1835 VW by lroth4
Nov 13, 2017

Is the Sonerai a smart choice as a first airplane? by Bil438
Nov 12, 2017

trailering by kennyw
Nov 08, 2017

Colorado Sonerai by myles-dean
Nov 08, 2017

Making a round tail by wbpace
Nov 08, 2017

Having fun in the Pacific Northwest! by Pttim
Nov 08, 2017

Gascolators; yay or nay? by Raceair
Nov 04, 2017

Best jacking point(s) for S2L by Chucker
Nov 03, 2017

Sonerai 4Sale Video by Smokyray
Nov 02, 2017

LTS Gear Longeron Damage by wbpace
Oct 31, 2017

Jabiru 3300 engine conversion - COST by Bil438
Oct 23, 2017

AeroVee Aeroinjector woes! by Smokyray
Oct 21, 2017

Powered by EzPortal