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  #1  
Old 06-13-2021, 11:50 AM
Piper J3's Avatar
Piper J3 Piper J3 is offline
 
Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 2,465
Default RV-12 Crotch Strap...

So, today we are Dynamically Balancing Prop and getting in/out of airplane a bunch of times and I noticed something odd, really odd...

Why is the metal buckle on the crotch strap bent at an angle? Both pilot and co-pilot are same bend and offset in same direction. I have sent an email to AmSafe Co. that supplies seatbelts to Vans.

I’m driving home from airport LMAO and I thought I’d ask the RV fraternity this question before I ask my wife. I’m sure my wife of twenty-five years would come up with some smart answer that wouldn’t be aviation related…
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Jim Stricker - EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 685

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
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  #2  
Old 06-13-2021, 12:55 PM
DHeal DHeal is offline
 
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Location: Windsor, California
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Default

I have always wondered about that myself. My thought is that the angle might help to unfasten/decouple the belt connectors while under load (e.g., like when inverted)??? Curious minds want to know....
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David Heal - Windsor, CA (near Santa Rosa)
EAA #23982 (circa 1965) - EAA Technical Counselor and Flight Advisor; CFI - A&I
RV-12 E-LSA #120496 (SV w/ AP and ADS-B 2020) - N124DH flying since March 2014 - 1,050+ hours (as of July 2021)!
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  #3  
Old 06-13-2021, 01:54 PM
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Tony_T Tony_T is offline
 
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Location: Lacey, WA
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Mine aren't like that

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  #4  
Old 06-13-2021, 03:15 PM
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Piper J3 Piper J3 is offline
 
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This is a Synergy-built airplane, so all bets are off...
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Jim Stricker - EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 685

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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  #5  
Old 06-14-2021, 09:42 AM
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Piper J3 Piper J3 is offline
 
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I checked my airplane today and crotch buckle is straight. Maybe newer builds have the angle?

Haven't asked wife's opinion yet, probably be un-printable...
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Jim Stricker - EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 685

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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  #6  
Old 06-14-2021, 12:14 PM
Bob Y Bob Y is offline
 
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Location: Piedmont, SC
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Mine shipped February of 2019 and they’re bent.
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  #7  
Old 06-14-2021, 02:18 PM
Tacco Tacco is offline
 
Join Date: Jan 2017
Location: White Salmon, WA
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Mine are bent too. But seriously, does anyone actually use these???
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  #8  
Old 06-14-2021, 04:28 PM
JFCRV12 JFCRV12 is offline
 
Join Date: May 2015
Location: Liberty Township OH
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Quote:
Originally Posted by Tacco View Post
Mine are bent too. But seriously, does anyone actually use these???
I do? Why not?
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  #9  
Old 06-14-2021, 05:36 PM
hiline hiline is offline
 
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Location: El Dorado Hills,Ca
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Quote:
Originally Posted by Tacco View Post
Mine are bent too. But seriously, does anyone actually use these???
Mine are bent, 2018 Model,and I wouldn't fly my plane without using this sub belt.
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  #10  
Old 06-14-2021, 07:34 PM
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Piper J3 Piper J3 is offline
 
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Quote:
Originally Posted by Tacco View Post
But seriously, does anyone actually use these???
What makes the RV-12 one of Van’s safest airplanes is excellent 5-point harness, strong roller bar, light airframe weight, and very low stall speed. Off-field landing is very survivable if airplane is flown correctly with touchdown at just above stall speed. Low weight and low speed mean very little energy to be dissipated.

Why would someone consider not using entire restraint system as designed? Perhaps same logic as not using checklist...
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Jim Stricker - EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 685

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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