harness bars!!! - Page 3 - Toyota Yaris Forums

turboyaris · 02-10-2009, 12:49 AM

aw tamago, where is your desire to solve things mathematically

cleong · 02-10-2009, 03:54 AM

Quote:

Originally Posted by Tamago

100mph car crash and without a HANS device, the driver will lose his head.. harness bar won't even be an issue at that point..

That's quite conjectural, as an F1 driver (David Purley) back in '77 survived a 180g impact, this is way before HANS were commonplace, or even invented:

He survived an estimated 179.8 G's in 1977 when he decelerated from 173 km/h (108 mph) to 0 in a distance of 66 cm (26 inches)

jkuchta · 02-10-2009, 04:11 AM

I think the harness bar will survive anything the rest of the driver's compartment will survive.

Slowing from 108 mph to 0 in 26 inches in a yaris without a full rollcage would be unsurvivable IMHO, no matter what restraint system was used. The front end of the car would intrude into the driver's compartment too far.

cleong · 02-10-2009, 04:40 AM

I'm not asking for a 100mph crash test, perhaps we're going off on a tangent here.
That being said, I have seen almost 100mph on my local track at the end of a 2200+ ft straight. And no, it didn't take two and a half minutes.

So long as a harness bar is at least as strong as the original seatbelts were I suppose that is good enough. Euro NCAP usually tests at only 40mph, though.

kustom play · 02-10-2009, 08:26 AM

i wonder if this will have the same issue the TC and XB had where the pillars the harness bar was attached to started to cave in after some time

turboyaris · 02-10-2009, 10:26 AM

Quote:

Originally Posted by kustom play

i wonder if this will have the same issue the TC and XB had where the pillars the harness bar was attached to started to cave in after some time

by this, do you mean that over time the chassis of the tc and xb began to flex causing the B pillars to come closer together? If that is the case, this bar should help that, as it would continuously be holding it at the dimensions it is installed in, if your car has already had this "dimension change" that is the reason for the slot in the brackets, to allow for slight differences in chassis measurements

Oh and tamago, it looks like the hatchback is 3/4" wider at the B-pillar, or at least thats what the collision section of the factory repair manual says, page DI-5 and DI-8 measurement J-j is the measure from the top of the B-pillars, I will have to double check on a actual liftback.

rob323 · 02-15-2009, 08:40 PM

Turboyaris, I have a small concern about the design, I will pm you.

cali yaris · 02-15-2009, 09:06 PM

Why not post it so we can all hear your concern?

Tamago · 02-15-2009, 10:04 PM

Quote:

Originally Posted by rob323

Turboyaris, I have a small concern about the design, I will pm you.

as do i. but no one wants to hear that.. they just want to know what colors they'll be available in.... well.. besides Garm that is..

rob323 · 02-15-2009, 10:15 PM

Nah, my concerns might be totally unfounded in which case it would just be pointless clutter and not beneficial to the thread.

Tamago · 02-15-2009, 10:15 PM

Quote:

Originally Posted by rob323

Nah, my concerns might be totally unfounded in which case it would just be pointless clutter and not beneficial to the thread.

so only positive comments are beneficial to the thread?

turboyaris · 02-15-2009, 10:37 PM

haha I take all concerns, I would like to know yours Tamago,

Robs concern was just in the design and in possibly adding an extra pair of legs, but as I informed him, I didn't believe that it would be a neccessary as I feel the unit would be strong enough to hold up. as many companies have a similar design.

Tamago, was yours just in the design of the upper bracket?

Tamago · 02-15-2009, 10:37 PM

Quote:

Originally Posted by turboyaris

Tamago, was yours just in the design of the upper bracket?

yes, still concerned with that L bend..

kustom play · 02-18-2009, 05:27 PM

Quote:

Originally Posted by turboyaris

by this, do you mean that over time the chassis of the tc and xb began to flex causing the B pillars to come closer together? If that is the case, this bar should help that, as it would continuously be holding it at the dimensions it is installed in, if your car has already had this "dimension change" that is the reason for the slot in the brackets, to allow for slight differences in chassis measurements

Oh and tamago, it looks like the hatchback is 3/4" wider at the B-pillar, or at least thats what the collision section of the factory repair manual says, page DI-5 and DI-8 measurement J-j is the measure from the top of the B-pillars, I will have to double check on a actual liftback.

no i mean people installed a harness bar in there TC and it started to sink the pillar below it

i might be able to dig up pics

dont know about the XB i know thats the reason we opted not to get it for our TC

happened here to somebody local you can see the pillars bent in, it wasnt a good thing

could of been the bar design or something but i know there were a few people who had that happen to them

turboyaris · 02-18-2009, 08:16 PM

hmm thats interesting... The only thing i can think of, is that if the bracket and the bar were welded together, as sparco's are, that possibly they were too small, and the customer just wrenched on the bolts and the bar would probably be stronger then the b pillars, he himself might have done it... I don't know, merely speculation

Tamago · 02-18-2009, 08:30 PM

why not adopt a plate like this... much stronger

you could always shim the bar for the "wider" b pillar configurations

cali yaris · 02-18-2009, 09:09 PM

^ very nice --

um... what colors does it come in?

LOL

turboyaris · 02-19-2009, 02:02 AM

haha sorry. tamago, I try to make my harness bars look a little nicer... plus the problem with that, or so it appears, is that the bar is higher then the opening in the seat for the harnesses, the bar is supposed to be just slightly lower then those openings... plus, what keeps that bar in place vertically? it looks like that bar could just rotate freely around the seat belt bolt... which could spell disaster.

02-10-2009, 04:40 AM	#40
cleong Parallel Parking Pro View User's Garage Drives: Yaris 1.5 Manual Join Date: Dec 2006 Location: Singapore Posts: 590	I'm not asking for a 100mph crash test, perhaps we're going off on a tangent here. That being said, I have seen almost 100mph on my local track at the end of a 2200+ ft straight. And no, it didn't take two and a half minutes. So long as a harness bar is at least as strong as the original seatbelts were I suppose that is good enough. Euro NCAP usually tests at only 40mph, though. __________________ Leong's NCP91 Toyota Yaris E Hankook V12 Evo 195/55/15 on Buddy Club P1 replicas 15x7 ET +38 Stebel horns, Philips Silvervision turn indicator bulbs TTE Lowering Springs, Camber bolts TRD Blue brake pads Fujitsubo Super Wagolis axleback exhaust DC Sports header

02-15-2009, 09:06 PM	#44
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	Why not post it so we can all hear your concern? __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

02-18-2009, 09:09 PM	#53
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	^ very nice -- um... what colors does it come in? LOL __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

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02-10-2009, 12:49 AM	#37
turboyaris Drives: 2007 Yaris Sedan Join Date: Jan 2007 Location: Southern New Jersey Posts: 459	aw tamago, where is your desire to solve things mathematically

02-10-2009, 04:11 AM	#39
jkuchta View User's Garage Drives: 2007 Yaris hatch (red) Join Date: Sep 2007 Location: L.A. Posts: 557	I think the harness bar will survive anything the rest of the driver's compartment will survive. Slowing from 108 mph to 0 in 26 inches in a yaris without a full rollcage would be unsurvivable IMHO, no matter what restraint system was used. The front end of the car would intrude into the driver's compartment too far.

02-10-2009, 08:26 AM	#41
kustom play pink wheels are cool View User's Garage Drives: 07 liftback Join Date: Oct 2008 Location: Phoenix Posts: 1,407	i wonder if this will have the same issue the TC and XB had where the pillars the harness bar was attached to started to cave in after some time

02-15-2009, 08:40 PM	#43
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	Turboyaris, I have a small concern about the design, I will pm you.

02-15-2009, 10:15 PM	#46
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	Nah, my concerns might be totally unfounded in which case it would just be pointless clutter and not beneficial to the thread.

02-15-2009, 10:37 PM	#48
turboyaris Drives: 2007 Yaris Sedan Join Date: Jan 2007 Location: Southern New Jersey Posts: 459	haha I take all concerns, I would like to know yours Tamago, Robs concern was just in the design and in possibly adding an extra pair of legs, but as I informed him, I didn't believe that it would be a neccessary as I feel the unit would be strong enough to hold up. as many companies have a similar design. Tamago, was yours just in the design of the upper bracket?

02-18-2009, 08:16 PM	#51
turboyaris Drives: 2007 Yaris Sedan Join Date: Jan 2007 Location: Southern New Jersey Posts: 459	hmm thats interesting... The only thing i can think of, is that if the bracket and the bar were welded together, as sparco's are, that possibly they were too small, and the customer just wrenched on the bolts and the bar would probably be stronger then the b pillars, he himself might have done it... I don't know, merely speculation

02-19-2009, 02:02 AM	#54
turboyaris Drives: 2007 Yaris Sedan Join Date: Jan 2007 Location: Southern New Jersey Posts: 459	haha sorry. tamago, I try to make my harness bars look a little nicer... plus the problem with that, or so it appears, is that the bar is higher then the opening in the seat for the harnesses, the bar is supposed to be just slightly lower then those openings... plus, what keeps that bar in place vertically? it looks like that bar could just rotate freely around the seat belt bolt... which could spell disaster.