VansAirForceForums  
Home > VansAirForceForums

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

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-7/7A
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 01-14-2018, 01:11 PM
StickNRudder StickNRudder is offline
 
Join Date: Apr 2015
Location: Tustin, CA
Posts: 35
Default Will helmet (or head) break the canopy?

With my seat a comfortable height for normal (blue-side up) flying, I find when I do neg g maneuvers my helmet hits the canopy. I cinch up the belts but it still happens. I have a slider and was concerned if I could crack the canopy?

If I am not going to be doing aerobatics, I donít wear the helmet and my head doesnít hit even in turbulence. The things I have thought of: lower the seat but that will restrict forward visibility, pad the helmet, donít wear a helmet, or donít worry about it.
__________________
Rick Woods
N5427W == Jack, Hank, Barbara, and Rick Woods.
RV-7
Flying, but not done, never done.
Reply With Quote
  #2  
Old 01-14-2018, 05:40 PM
schaplerrh schaplerrh is offline
 
Join Date: Mar 2014
Location: Alexandria VA
Posts: 243
Default

Do you have a ratchet belt? Removed same from right side at her insistence but now can't secure passengers anywhere close to my belt for acro.
Reply With Quote
  #3  
Old 01-14-2018, 09:49 PM
StickNRudder StickNRudder is offline
 
Join Date: Apr 2015
Location: Tustin, CA
Posts: 35
Default

Quote:
Originally Posted by schaplerrh View Post
Do you have a ratchet belt? Removed same from right side at her insistence but now can't secure passengers anywhere close to my belt for acro.
I have a Crow 5-point harness. I thought it would be ok. It sounds like a ratchet style might be needed. You selling the one you removed?
__________________
Rick Woods
N5427W == Jack, Hank, Barbara, and Rick Woods.
RV-7
Flying, but not done, never done.
Reply With Quote
  #4  
Old 01-15-2018, 08:54 AM
ppilotmike's Avatar
ppilotmike ppilotmike is offline
 
Join Date: Jan 2010
Location: Denver, CO
Posts: 1,749
Default One Data Point

I have heard of one occurrence, here in Colorado, where a very seasoned RV-6 pilot smacked his head during turbulence and cracked his slider canopy enough that it needed to be replaced. That being said, I believe the canopy had flown for many years before this occurred. Although it's always been hangared, it sees a lot of flight hours too.
__________________
Mike Rettig
EAA Chapter 301, President www.eaa301.org
VAF Dues Current: as of 01/15/18
RV-10 (41PX Reserved) Fuselage
F-14 (Pedal Plane - Daughter's Project) "Flying"
http://www.mykitlog.com/mikrettig
Reply With Quote
  #5  
Old 01-15-2018, 10:53 AM
wirejock's Avatar
wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 2,884
Default Shoulder straps

I wonder if it is due to the way Vans shoulder straps route from behind instead of below.
Driving a race car, the straps route down. The really cinch you down in the seat.
__________________
Larry Larson
Estes Park, CO
http://wirejockrv7a.blogspot.com
wirejock at yahoo dot com
Donated 12/01/2017. Plus a little extra.
RV-7A #73391, N511RV reserved (1,800+ hours)
HS SB, empennage, tanks, wings, fuse, working finishing kit
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
Reply With Quote
  #6  
Old 01-15-2018, 11:19 AM
David Paule David Paule is offline
 
Join Date: Dec 2009
Location: Boulder, CO
Posts: 3,404
Default

Shoulder straps from behind is the recommended approach, since a downward angle puts a downward compressive load into the spine in a crash.

To prevent moving upward in aerobatics, tighten that seat belt.

Ages ago, I learned aerobatics in an open-cockpit airplane over the ocean. The first thing we'd so was roll upside down and roll back upright. Then we'd tighten our safety belts as much as possible. We repeated this and if necessary, we tightened again. Having no canopy and a cold ocean underneath made this seem important.

Dave
Reply With Quote
  #7  
Old 01-15-2018, 12:23 PM
wjb's Avatar
wjb wjb is offline
 
Join Date: Nov 2012
Location: Half Moon Bay, CA
Posts: 728
Default

My old acro instructor said to to tighten the ratchet until your pelvis cracks, and then tighten it one more cycle for good measure. The lap belt really needs to be tight to keep from moving up/down.
__________________
Bill Bencze
N430WB (reserved) RV-7 #74152, tip-up. Engine is in the house!
Log at: http://rv7.wbencze.com
Defeating gravity one rivet at a time
VAF 2018 donation happily made
Reply With Quote
  #8  
Old 01-15-2018, 01:06 PM
StickNRudder StickNRudder is offline
 
Join Date: Apr 2015
Location: Tustin, CA
Posts: 35
Default

I see the problem, thanks. I really tightened the shoulder straps but left the lap belt at itís normal tension. Next week Iíll try again.
__________________
Rick Woods
N5427W == Jack, Hank, Barbara, and Rick Woods.
RV-7
Flying, but not done, never done.
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 08:33 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.