VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-6/6A
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 04-14-2019, 08:46 AM
DeeCee 57's Avatar
DeeCee 57 DeeCee 57 is offline
 
Join Date: Sep 2018
Location: Zürich W, Switzerland, Europe, Earth, Milky Way, known Universe...
Posts: 139
Lightbulb mods on Tailwheel - Fork - Springs

Aim of these modifications were weight loss, practicability, looks and aerodynamics…

Weight: total weight change - 334g. Ain’t a lot, but could play favorably for the CG of some -4s.
Practicability: the original Van’s fork with its almost 90° angle to forward travel is an invitation to get stuck against any kind of curb with possible dire consequences. Rejected was the nice but massive Doug Bell product on the grounds of its weight, being too wide and requiring the use of countless washers, and elevating the tail of the aircraft. Keeping the tail low was a requirement for performance reason (use of very short grass runways) and looks. Welding a triangular section in front of the fork will hopefully prevent or alleviate having the tail stuck on some obstacle, weight increase 62g.
Looks: the lightweight tailwheel from flyboyaccessories https://www.flyboyaccessories.com/Li...ire-p/1002.htm and the Lynx spring/link system https://shop.vansaircraft.com/cgi-bi...duct=tail-lynx are of the highest quality and really shine.
Aerodynamics: picked up a good 22Kts on the top speed. Sitting on the ground that is. The smaller frontal surface of the Lynx springs is hopefully offsetting the added drag of the new tailwheel.








__________________
Life's short... Enjoy!

DC

http://www.aerofun.ch

RV-4 #2062 HB-YVZ airframe builder
RV-6 #25685, slider, O-360-A3A (carb/dual Lightspeed II), MTV-12-B, HB-YLL owner
Reply With Quote
  #2  
Old 04-14-2019, 09:55 AM
Pilot135pd's Avatar
Pilot135pd Pilot135pd is offline
 
Join Date: Jan 2019
Location: Ben Wheeler, TX
Posts: 402
Default

The fin in front makes it look complete, congrats !! The new spring system definitely looks better although functionally is there a difference?

Regarding the wheel, why did you choose another solid wheel over Flyboy's Condor combo with the 8" tube tire? You mentioned something about not lifting the tail but everything I've read from people who have installed it say it doesn't lift anything discernible, at least in the longer RV-8.

I'm wanting to replace the fork and wheel and I live on a 2500' grass runway. How short of a grass runway do you operate at?
__________________
RV-8 N52VM : Dynon D-180, GTX327, SL40, Garmin 496 GPS, AP74 Autopilot, Titan 0-360A1A2N, Nickel Coated Cylinders, 2 Slick mags (both impulse coupled), engine preheater, Hartzell Plane-Power alternator, Hartzell HC-C2YR-1BFP constant speed, blended airfoil

Exempt by 3 out of the 10 ways but I still donated.
Reply With Quote
  #3  
Old 04-14-2019, 10:23 AM
Mark Dickens's Avatar
Mark Dickens Mark Dickens is offline
 
Join Date: Apr 2012
Location: Collierville, TN (KFYE)
Posts: 1,256
Default

Quote:
Originally Posted by Pilot135pd View Post
You mentioned something about not lifting the tail but everything I've read from people who have installed it say it doesn't lift anything discernible, at least in the longer RV-8.
I have the Condor tail wheel and fork (and very happy with it FWIW), and my hangar mate has the standard Vans set up and wheel. Both RV-8s. I measured the difference in height and it came out to 2-5/8"
__________________
RV-8 #81077 Super Slow Build
Titan IOX-370, Dual P-Mags, AFP FM200A FI, Whirlwind 200RV CS Prop
First Flight 11/20/2016
www.marksrv8.com
Reply With Quote
  #4  
Old 04-14-2019, 10:42 AM
Pilot135pd's Avatar
Pilot135pd Pilot135pd is offline
 
Join Date: Jan 2019
Location: Ben Wheeler, TX
Posts: 402
Default

Quote:
Originally Posted by Mark Dickens View Post
I have the Condor tail wheel and fork (and very happy with it FWIW), and my hangar mate has the standard Vans set up and wheel. Both RV-8s. I measured the difference in height and it came out to 2-5/8"
I'm going to measure from the top of the tail to the ground before and after to come up with my total difference since some threads here say it isn't much. You never know how much apart your two planes were before you changed yours.
__________________
RV-8 N52VM : Dynon D-180, GTX327, SL40, Garmin 496 GPS, AP74 Autopilot, Titan 0-360A1A2N, Nickel Coated Cylinders, 2 Slick mags (both impulse coupled), engine preheater, Hartzell Plane-Power alternator, Hartzell HC-C2YR-1BFP constant speed, blended airfoil

Exempt by 3 out of the 10 ways but I still donated.

Last edited by Pilot135pd : 04-14-2019 at 10:45 AM.
Reply With Quote
  #5  
Old 04-14-2019, 11:52 AM
DeeCee 57's Avatar
DeeCee 57 DeeCee 57 is offline
 
Join Date: Sep 2018
Location: Zürich W, Switzerland, Europe, Earth, Milky Way, known Universe...
Posts: 139
Default

Pilot135pd my home field is a comfortable concrete of of about 2K ft length. But neighboring France and Italy have loads of excellent grass/gravel strips in the 900’ or < range which I’m looking forward flying into
__________________
Life's short... Enjoy!

DC

http://www.aerofun.ch

RV-4 #2062 HB-YVZ airframe builder
RV-6 #25685, slider, O-360-A3A (carb/dual Lightspeed II), MTV-12-B, HB-YLL owner
Reply With Quote
  #6  
Old 04-14-2019, 12:10 PM
Mark Dickens's Avatar
Mark Dickens Mark Dickens is offline
 
Join Date: Apr 2012
Location: Collierville, TN (KFYE)
Posts: 1,256
Default

Quote:
Originally Posted by Pilot135pd View Post
You never know how much apart your two planes were before you changed yours.
You are incorrect. I measured from the same point in the planes, which was where the tailspring enters the WD-409 weldments on the bottom. But believe what you want. Identical
__________________
RV-8 #81077 Super Slow Build
Titan IOX-370, Dual P-Mags, AFP FM200A FI, Whirlwind 200RV CS Prop
First Flight 11/20/2016
www.marksrv8.com
Reply With Quote
  #7  
Old 04-14-2019, 12:27 PM
Pilot135pd's Avatar
Pilot135pd Pilot135pd is offline
 
Join Date: Jan 2019
Location: Ben Wheeler, TX
Posts: 402
Default

Quote:
Originally Posted by Mark Dickens View Post
You are incorrect. I measured from the same point in the planes, which was where the tailspring enters the WD-409 weldments on the bottom. But believe what you want. Identical
It wasn't an insult, you didn't measure before you changed it and without knowing how you measured it was just a valid observation. Geesh.
__________________
RV-8 N52VM : Dynon D-180, GTX327, SL40, Garmin 496 GPS, AP74 Autopilot, Titan 0-360A1A2N, Nickel Coated Cylinders, 2 Slick mags (both impulse coupled), engine preheater, Hartzell Plane-Power alternator, Hartzell HC-C2YR-1BFP constant speed, blended airfoil

Exempt by 3 out of the 10 ways but I still donated.
Reply With Quote
  #8  
Old 04-14-2019, 12:59 PM
Mark Dickens's Avatar
Mark Dickens Mark Dickens is offline
 
Join Date: Apr 2012
Location: Collierville, TN (KFYE)
Posts: 1,256
Default

Quote:
Originally Posted by Pilot135pd View Post
It wasn't an insult, you didn't measure before you changed it and without knowing how you measured it was just a valid observation. Geesh.
Whatever...I was only trying to offer some data to those thinking about that tailwheel. I am very confident in the measurement. Moving on...
__________________
RV-8 #81077 Super Slow Build
Titan IOX-370, Dual P-Mags, AFP FM200A FI, Whirlwind 200RV CS Prop
First Flight 11/20/2016
www.marksrv8.com
Reply With Quote
  #9  
Old 04-14-2019, 08:20 PM
edsong's Avatar
edsong edsong is offline
 
Join Date: Dec 2010
Location: Hatton, ND
Posts: 124
Default

Nice and simple.

Eddy
__________________
Edson Grindeland
Hatton, ND
RV-8 Flying
http://www.hattonflyingcircus.com
You do not need a parachute to skydive. You only need a parachute to skydive twice.
Reply With Quote
  #10  
Old 04-24-2019, 08:21 AM
ConAgraPilot's Avatar
ConAgraPilot ConAgraPilot is offline
 
Join Date: Jul 2012
Location: Poplar Grove, IL
Posts: 50
Talking FS: Tail Lynx

Just saw this thread and wanted to add that I happen to have the Tail Lynx new and unused that I'm selling. I just decided to go with the JDAir steering link route instead so I'm selling the Lynx. Here is the classified link: http://www.vansairforce.com/communit...d.php?t=170674
__________________
Michael Foss
Workshop Completed!
RV-8 Empennage Completed!
RV-8 Wings Completed!
RV-8 Fuselage In Progress 95% Done
AeroSport IO-375 Hung
N800MF Reserved



Follow my build at www.rv8-hangar.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 12:33 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.