Is pre-locking the seat belt a no go? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Captain Snooze · 03-12-2013, 06:15 AM

I had a Cobra one piece seat in my previous car. Even just using the standard inertia reel seat belt it kept me firmly in place. I am finding the seat in my BRZ to be somewhat lacking by comparison. I can't but help think that pre-locking the seat belt is a bad idea but is this correct? Does any one know why I shouldn't do this? (And no, I can't legally replace the seat and keep it road worthy

)

7thgear · 03-12-2013, 10:19 AM

cg-lock!

JRitt · 03-12-2013, 11:05 AM

I used to try and pre-lock the seat belt, but it never really worked that well. I think I'd shift or relax tension on it and it would let go. The CG lock was an improvement for sure, but the problem is that your upper torso still moves laterally. I never feel completely comfortable and relaxed unless I'm strapped in with a harness. It's a bummer for sure, but the reality in my case.

ayau · 03-12-2013, 11:28 AM

Without a rollcage, I don't think you'd want your upper torso to be locked in place. If your car rolls over and your upper torso is locked in place, your spine mine get crushed. The CG Lock is probably the best solution without compromising safety.

Huehuecoyotl · 03-12-2013, 12:04 PM

Quote:

Originally Posted by 7thgear

cg-lock!

have you used one? How does it mount to the oe rails, or does it?

funbeatsfast · 03-12-2013, 12:12 PM

CG Lock attaches to the seat belt, allows you to tighten and "lock" the lap portion of the belt. It's easy to use and works pretty well. Definitely not a replacement for a harness.

Anyone look into this? -> http://www.ft86club.com/forums/showthread.php?t=30225

7thgear · 03-12-2013, 12:14 PM

Quote:

Originally Posted by Huehuecoyotl

have you used one? How does it mount to the oe rails, or does it?

rail what?

no a cg-lock is a small device that locks the length of your belt's lap portion.

you know how your seatbelt moves through the slit in the seatbelt clip? well it prevents the lap poriton from moving. Next time you'r ein the car, pull up on your belt as hard as you can to get a feel or what it would be like.

http://www.cg-lock.com/

kos · 03-12-2013, 12:46 PM

Quote:

Originally Posted by 7thgear

cg-lock!

THIS.

I may have one laying around that I have no use for anymore now that I have an Autopower cage and harnesses...

Huehuecoyotl · 03-12-2013, 03:58 PM

Quote:

Originally Posted by 7thgear

rail what?

no a cg-lock is a small device that locks the length of your belt's lap portion.

you know how your seatbelt moves through the slit in the seatbelt clip? well it prevents the lap poriton from moving. Next time you'r ein the car, pull up on your belt as hard as you can to get a feel or what it would be like.

http://www.cg-lock.com/

Ah, I see. thanks

Miniata · 03-12-2013, 04:51 PM

I've used CG-Locks in a couple different cars for both autocross and track duty. Love them. Planning on eventually getting one for my BRZ too. I'm a really big guy, but have never had an issue with my upper body moving around on track or autocross course with my butt locked firmly in place with the CG-Lock. I've had Schroth 3/4 point as well as 5-pt (with a cage) in other cars in the past, but don't miss them for autocross and HPDE/PDX track days.

Captain Snooze · 03-12-2013, 05:04 PM

Quote:

Originally Posted by ayau

Without a rollcage, I don't think you'd want your upper torso to be locked in place. If your car rolls over and your upper torso is locked in place, your spine mine get crushed.

Ummm.. Wouldn't you be locked in place any way when the inertia reel locks? I thought they locked up at sudden deceleration or more than so many degrees pitch/roll and if the pre-tensioner kicks in I am hypothesizing you would be in a similar position to having the belt pre-locked.

brz7400 · 03-12-2013, 06:54 PM

i like to pre-lock during autocross. to prevent it from loosening, you really have to cinch yourself in tight before pre-locking.

my other car has a child seat holding type of reel for the driver, so i can easily get locked up by pulling belt fully out and then allowing it to retract back click by click (only loosens when you pop the buckle).

SubieNate · 03-12-2013, 07:08 PM

Quote:

Originally Posted by Captain Snooze

Ummm.. Wouldn't you be locked in place any way when the inertia reel locks? I thought they locked up at sudden deceleration or more than so many degrees pitch/roll and if the pre-tensioner kicks in I am hypothesizing you would be in a similar position to having the belt pre-locked.

I think he was referring to a full harness. A shoulder belt, even locked, isn't going to lock your upper body into a vertical position the way a 4 or 5 point harness will.

Without a cage, I could see using one of those Shroth harnesses that hook up to the rear seatbelts for something like Autocross, but I probably wouldn't use a harness without a cage for anything high speed or involving other cars.

Nathan

Captain Snooze · 03-13-2013, 12:47 AM

Quote:

Originally Posted by SubieNate

I think he was referring to a full harness.
Nathan

Ahhh... Check

03-12-2013, 06:15 AM	#1
Captain Snooze Because compromise ® Join Date: Jan 2012 Drives: Red Herring Location: australia Posts: 7,817 Thanks: 4,047 Thanked 9,548 Times in 4,194 Posts Mentioned: 60 Post(s) Tagged: 0 Thread(s)	Is pre-locking the seat belt a no go? I had a Cobra one piece seat in my previous car. Even just using the standard inertia reel seat belt it kept me firmly in place. I am finding the seat in my BRZ to be somewhat lacking by comparison. I can't but help think that pre-locking the seat belt is a bad idea but is this correct? Does any one know why I shouldn't do this? (And no, I can't legally replace the seat and keep it road worthy )

03-12-2013, 10:19 AM	#2
7thgear i'm sorry, what? Join Date: Jan 2012 Drives: Canada Location: I rock a beat harder than you can beat it with rocks Posts: 4,399 Thanks: 357 Thanked 2,508 Times in 1,268 Posts Mentioned: 40 Post(s) Tagged: 3 Thread(s)	cg-lock! __________________ don't you think if I was wrong, I'd know it?

03-12-2013, 11:05 AM	#3
JRitt Join Date: Feb 2012 Drives: 2012 BRZ Premium WRB 6MT Location: Charlotte NC Posts: 720 Thanks: 230 Thanked 1,422 Times in 381 Posts Mentioned: 81 Post(s) Tagged: 3 Thread(s)	I used to try and pre-lock the seat belt, but it never really worked that well. I think I'd shift or relax tension on it and it would let go. The CG lock was an improvement for sure, but the problem is that your upper torso still moves laterally. I never feel completely comfortable and relaxed unless I'm strapped in with a harness. It's a bummer for sure, but the reality in my case. __________________ Black Friday 2025 at Essex/AP Racing is 11/10 - 12/5/25! Jeff Ritter\|Mgr.- High Performance Division www.essexparts.com

03-12-2013, 04:51 PM	#10
Miniata Senior Member Join Date: Mar 2012 Drives: 13 BRZ - 90 Miata - 07 FXT -05 Mini Location: Ohio Posts: 546 Thanks: 6 Thanked 142 Times in 105 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I've used CG-Locks in a couple different cars for both autocross and track duty. Love them. Planning on eventually getting one for my BRZ too. I'm a really big guy, but have never had an issue with my upper body moving around on track or autocross course with my butt locked firmly in place with the CG-Lock. I've had Schroth 3/4 point as well as 5-pt (with a cage) in other cars in the past, but don't miss them for autocross and HPDE/PDX track days. __________________ 17x7 Kosei K1-TS w/ 215/45-17 Dunlop Star Specs Nameless Track Pipe - Strano front sway bar

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03-12-2013, 11:28 AM	#4
ayau Senior Member Join Date: Nov 2011 Drives: Some rust bucket Location: Polar ice cap Posts: 3,058 Thanks: 312 Thanked 1,046 Times in 556 Posts Mentioned: 37 Post(s) Tagged: 0 Thread(s)	Without a rollcage, I don't think you'd want your upper torso to be locked in place. If your car rolls over and your upper torso is locked in place, your spine mine get crushed. The CG Lock is probably the best solution without compromising safety.

03-12-2013, 12:12 PM	#6
funbeatsfast Senior Member Join Date: Jan 2012 Drives: '13 FR-S Location: Ohio Posts: 115 Thanks: 13 Thanked 21 Times in 15 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	CG Lock attaches to the seat belt, allows you to tighten and "lock" the lap portion of the belt. It's easy to use and works pretty well. Definitely not a replacement for a harness. Anyone look into this? -> http://www.ft86club.com/forums/showthread.php?t=30225

03-12-2013, 06:54 PM	#12
brz7400 Senior Member Join Date: Jun 2012 Drives: Subaru BRZ Location: Los Angeles, CA Posts: 138 Thanks: 84 Thanked 30 Times in 22 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	i like to pre-lock during autocross. to prevent it from loosening, you really have to cinch yourself in tight before pre-locking. my other car has a child seat holding type of reel for the driver, so i can easily get locked up by pulling belt fully out and then allowing it to retract back click by click (only loosens when you pop the buckle).

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