follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Speed By Design
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > Technical Topics > Tracking / Autocross / HPDE / Drifting

Tracking / Autocross / HPDE / Drifting What these cars were built for!


User Tag List

Reply
 
Thread Tools Search this Thread
Old 03-15-2019, 02:30 AM   #29
remhex
Member
 
Join Date: Sep 2018
Drives: Car
Location: Earth
Posts: 50
Thanks: 7
Thanked 12 Times in 10 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
I didn't have any issues with mine going back in. I re-used the oem bolt and used no washers. I didn't try using the bolts supplied with the harness. The only thing I had issues with was getting it setup so the original rear seatbelt would still retract.
remhex is offline   Reply With Quote
Old 03-16-2019, 03:00 PM   #30
edwardl
Senior Member
 
Join Date: Jun 2018
Drives: 2018 BRZ
Location: New Jersey
Posts: 116
Thanks: 2
Thanked 49 Times in 25 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Do not mount your harnesses like this...
edwardl is offline   Reply With Quote
Old 03-16-2019, 03:16 PM   #31
cjd
Senior Member
 
cjd's Avatar
 
Join Date: May 2014
Drives: 2017 BRZ
Location: Chicago
Posts: 3,283
Thanks: 1,253
Thanked 2,925 Times in 1,712 Posts
Mentioned: 58 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by edwardl View Post
Do not mount your harnesses like this...

Like what?
__________________
Second chance build... or whatever it is.
cjd is offline   Reply With Quote
Old 03-16-2019, 05:27 PM   #32
edwardl
Senior Member
 
Join Date: Jun 2018
Drives: 2018 BRZ
Location: New Jersey
Posts: 116
Thanks: 2
Thanked 49 Times in 25 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by cjd View Post
Like what?
uneven diagonal pressure on each strap
edwardl is offline   Reply With Quote
Old 03-16-2019, 05:30 PM   #33
i8ur911
Senior Member
 
Join Date: Aug 2014
Drives: 17 BRZ Series.Yellow
Location: NH
Posts: 175
Thanks: 67
Thanked 71 Times in 52 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
I don't think Schroth has actually tested the BRZ for any of their ASM belts.

I have a friend that works at HMS Motorsport who drives a BRZ. If this was an "approved" fitment, you'd likely A LOT more 86's running this set up.

Sent from my Pixel 3 using Tapatalk
i8ur911 is offline   Reply With Quote
Old 03-16-2019, 07:55 PM   #34
cjd
Senior Member
 
cjd's Avatar
 
Join Date: May 2014
Drives: 2017 BRZ
Location: Chicago
Posts: 3,283
Thanks: 1,253
Thanked 2,925 Times in 1,712 Posts
Mentioned: 58 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by edwardl View Post
uneven diagonal pressure on each strap

The Rallye 3 is designed to mount to a rear top mount, off to one side... so you're picking an argument with Schroth I think. Though I believe the angle in this car is just outside the recommended angle or some such (probably because the rear seat is barely a rear seat). Hopefully you never crash at a slight angle either, 'cause you'd have uneven diagonal pressure on each strap...



I can tell you that a ~40+mph run into a 4" gate post (popped the post right out of the ground too) with a Rallye 3 left the driver with no issues at all... meanwhile, I had really bad contusions from the OE belt (passenger seat). YMMV. But I wouldn't run it at the track or on the street (this was an autocross...)
__________________
Second chance build... or whatever it is.
cjd is offline   Reply With Quote
The Following User Says Thank You to cjd For This Useful Post:
Shark_Bait88 (03-28-2019)
Old 03-25-2019, 09:59 PM   #35
xwd
Senior Member
 
Join Date: Feb 2012
Drives: 2013 DGM Subaru BRZ (Subie #9)
Location: ATL, US
Posts: 2,667
Thanks: 123
Thanked 860 Times in 552 Posts
Mentioned: 32 Post(s)
Tagged: 0 Thread(s)
For anyone who cares to look at the actual manual these are the mounting instructions for the Rallye 3. They don't actually give a maximum belt angle but for those who think the mounting in this thread is grossly incorrect, it isn't. There are right and left side specific belts and made for the tail strap to be attached at an angle.


xwd is offline   Reply With Quote
The Following User Says Thank You to xwd For This Useful Post:
pinoy_dorifto (03-26-2019)
Old 03-27-2019, 05:59 PM   #36
JMK-007
Member
 
Join Date: Aug 2017
Drives: BRZ
Location: Chicago, IL.
Posts: 15
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
There are serious safety issues to consider with any 4 point or greater harness and no roll bar. God forbid, but what happens if you are in a rollover while in a fixed position and no roll bar? Just something to think about...
JMK-007 is offline   Reply With Quote
The Following User Says Thank You to JMK-007 For This Useful Post:
i8ur911 (03-27-2019)
Old 04-17-2019, 06:01 PM   #37
Warex
Member
 
Warex's Avatar
 
Join Date: Jul 2012
Drives: 2013 Subaru BRZ
Location: California
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by JMK-007 View Post
There are serious safety issues to consider with any 4 point or greater harness and no roll bar. God forbid, but what happens if you are in a rollover while in a fixed position and no roll bar? Just something to think about...
Does anyone have any actual evidence that this is something to worry about? I have heard this argument a lot of places but haven't seen any actual evidence. This video of a Schroth quickfit the guy talks about it where he claims it's a misconception:



I don't particularly like 4pt harnesses either but Schroth is a reputable company that has made their 4pt harnesses much safer than other 4pts on the market and they actually do testing on their products. Their 4pts are DOT approved and the OP has mounted it per their specifications so i dont see how this is any less safe than the OEM 3pt
Warex is offline   Reply With Quote
Old 04-17-2019, 07:11 PM   #38
i8ur911
Senior Member
 
Join Date: Aug 2014
Drives: 17 BRZ Series.Yellow
Location: NH
Posts: 175
Thanks: 67
Thanked 71 Times in 52 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Garage
Notice how he doesn't mention Subaru at the end. Each seat needs to be tested specifically for this application and no Subaru's have been tested (it's mostly Euro cars).

Is a four point harness "safe" in a rollover?

That depends on a lot of variables, but one of the biggest is the car itself. Older cars (pre 2010...at least) did extremely poor in crash tests that focused on A-pillar pressure. NHTSA started to include this rollover type test in the last 5-10 years and a lot vehicles tested very poorly. Since then, manufactures have made a much better effort in addressing this weak point.

So, if you combine an older chassis that tested poorly with a fixed back seat and a 4pt harness, I'd say that's a recipe for disaster......roof caves in rollover accident, no give in the seat and a driver that is very securely fastened to that seat. Doesn't sound too enticing.

The only place I would ever consider a 4pt is autocross. I'd NEVER consider one on track.....especially with a fixed back seat.

Sent from my Pixel 3 using Tapatalk
i8ur911 is offline   Reply With Quote
The Following User Says Thank You to i8ur911 For This Useful Post:
Tristor (04-17-2019)
Old 04-17-2019, 07:28 PM   #39
iLuveKetchup
My VTEC fluid is full
 
iLuveKetchup's Avatar
 
Join Date: Jan 2012
Drives: EFF JAY
Location: NYC
Posts: 935
Thanks: 149
Thanked 268 Times in 183 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Warex View Post
Does anyone have any actual evidence that this is something to worry about? I have heard this argument a lot of places but haven't seen any actual evidence. This video of a Schroth quickfit the guy talks about it where he claims it's a misconception:


The Quickfit Pro are made & tested for a specific seat/car. This is different from the generic Schroth Rallye 3 that are used (fitted) in the twins. I had the Quickfit Pro on my STi & have the Rallye 3 for the FRS. I’m more concerned about snapping my neck than the roof caving in.
iLuveKetchup is offline   Reply With Quote
Old 04-17-2019, 09:03 PM   #40
Warex
Member
 
Warex's Avatar
 
Join Date: Jul 2012
Drives: 2013 Subaru BRZ
Location: California
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by i8ur911 View Post
Notice how he doesn't mention Subaru at the end. Each seat needs to be tested specifically for this application and no Subaru's have been tested (it's mostly Euro cars).
He doesn't mention Subaru at the end because they dont make a Quickfit for a Subaru but the Rallye 3 harness is meant to install in any car with suitable mounting locations. They have a list of cars that the Rallye 3 will work with but unfortunately it looks like the BRZ/FRS platform isn't on that list. SUBARU is on the list but only the Impreza chassis.

The strength of the seat is tested to make sure it can survive the load of the seatbelt because of the ~45deg angle of the shoulder straps going down to the rear seats. If the shoulder belts are mounted high enough then the seat back doesn't need to be as strong. That's why on the Subaru Impreza, the Rallye 3 harness can be installed if the shoulder straps are mounted to the higher "C" position but NOT if the straps are mounted at the lower "D" position.

But yes, in general it looks like Schroth won't recommend this harness for our cars since they haven't fully tested it. Bummer because it looks like a good solution for some people. I bet if they tested it, they would recommend it be installed just like OP did.
Warex is offline   Reply With Quote
Old 04-22-2019, 08:48 PM   #41
Clutch Dog
Senior Member
 
Join Date: Jan 2019
Drives: 2017 BRZ PP , 2005 Saab 97X
Location: CA
Posts: 1,052
Thanks: 754
Thanked 721 Times in 405 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
I bought one and installed it like the OP did, used this page as a guide too. The way it works vs the factory 3 point I trust it enough to hold me in place and do its job.

That said I have the factory harness also for street use because.. well its more comfy.
Clutch Dog is offline   Reply With Quote
Old 04-23-2019, 10:15 AM   #42
CatDaddysBBQ
Senior Member
 
Join Date: Aug 2013
Drives: '13 FR-S
Location: Warrenville, IL
Posts: 476
Thanks: 354
Thanked 284 Times in 141 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Garage
Ive had this setup in my FRS for about about 4yrs now. Love it. I did a ton of research before buying it, and believe in the ASM tech enough to run it. Mine is mounted exactly the same way, and its terrific.

I don't use it on the street because why TF would anybody really want harnesses while cruising in traffic?

But this mounts so conveniently to stow away when not in use, and it takes like 45 seconds to get the OEM seatbelt out of the way to set this up for autoX or track.

Love it.
CatDaddysBBQ is offline   Reply With Quote
The Following User Says Thank You to CatDaddysBBQ For This Useful Post:
Clutch Dog (05-17-2019)
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Schroth Rallye 3 4-point ASM Harness (Black) smbstyle Interior Parts (Incl. Lighting) 5 03-09-2015 12:09 AM
Making My Own Harness Pad(s) Pictures Inside FRS_FIEND Cosmetic Modification (Interior/Exterior/Lighting) 2 07-28-2014 08:20 AM
**JAPAN TOM'S LED Tail Light for FRS / 86/ BRZ - INSTALLED PICTURES INSIDE!! nigel-jdmparts Exterior Parts - Lighting 88 04-10-2014 06:49 PM


All times are GMT -4. The time now is 04:45 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.