TRD Motion Control Beam

[go_a_way1]

Originally Posted by jsimon7777

Door flex is not the same as chassis flex. Doors are only a part of the chain. So check that tire. See if opening the doors makes it hit the ground. If it does then we know there's a lot of flex without the doors. I really wouldn't expect a big difference in our stiff little cars. Not sure what the Nm/deg is, but I imagine it's well north of 20k.

Yeah I am interested to see the difference. I cant wait to get my car back to test this now

[Tokay444]

Going back to my initial argument, as something becomes more rigid, the more brittle it becomes. Not stronger.
General rule of thumb.

[EAGLE5]

Originally Posted by Tokay444

Going back to my initial argument, as something becomes more rigid, the more brittle it becomes. Not stronger.
General rule of thumb.

I'm not an engineer, but I'm pretty sure that rule isn't a great one. Qualities are simply dependent on the material in question. Perhaps you mean that, in a system, different places are designed to take different loads and are designed to handle those loads. If you make a change here, it can transfer loads there, which can break something.

I don't remember anybody here complaining about frame failures, including people with heavily modified cars. I've seen photos of failures in BMWs, and that's all I can think of.

[Captain Snooze]

Originally Posted by Tokay444

Carbon tubs have engineered flex points.

Can you point me in the direction of some articles that discuss this?

[venturaII]

Originally Posted by jsimon7777

I don't remember anybody here complaining about frame failures, including people with heavily modified cars. I've seen photos of failures in BMWs, and that's all I can think of.

And the solution to those frame failures wasn't to make the frame MORE flexible...lol. All the E30, E36, E46, E82, E9x etc. frame issues are addressed with more bracing.


Ok - now I'm really done.

[ichitaka05]

Originally Posted by jsimon7777

I'm not an engineer, but I'm pretty sure that rule isn't a great one. Qualities are simply dependent on the material in question. Perhaps you mean that, in a system, different places are designed to take different loads and are designed to handle those loads. If you make a change here, it can transfer loads there, which can break something.

I don't remember anybody here complaining about frame failures, including people with heavily modified cars. I've seen photos of failures in BMWs, and that's all I can think of.

Lil off-topic, but I've stated this in earlier here, but a ton of Japanese shop who race using 86/BRZ complained about weak frame... some shop have broken rear frame before. This is why Toyota/Subaru have reinforced the rear chassis on Kouki86.

Anyways, I'll go back keep eating popcorn

[strat61caster]

Originally Posted by Captain Snooze

Can you point me in the direction of some articles that discuss this?

Hard to find anything real, best place will be SAE articles, but it's definitely a thing, so much money and effort is involved though, not many people are publishing textbooks about chassis design.

http://papers.sae.org/2014-01-1052/

BMW Z8 had an aluminum spaceframe chassis, it was too rigid and cracked, the solution was to drill relief holes in the frame to allow for more flex relieving strain where the chassis was failing.

[Tcoat]

Originally Posted by go_a_way1

Yeah I am interested to see the difference. I cant wait to get my car back to test this now

A test on yours will be invalid for the rest of us. Any guesses why?

[ichitaka05]

Originally Posted by Tcoat

A test on yours will be invalid for the rest of us. Any guesses why?

I was going to post Canadian joke... but I'll let someone else do it.

[chaoskaze]

Originally Posted by jsimon7777

Drive to where the rear tire lifts. Stop the car with said tire lifted. Get out. Open the doors one at a time. See what happens. Open them both. See what happens. Report back.

I'm not sure about tire lift & stuff. But mine door stabilizer made the car less snappy when rear is in the middle of "regaining" traction while turning. That's all the difference I feel period.

But I guess being able to get on gas more early when I fuk up is kind of an improvement. 😜


Sent from my iPhone using Tapatalk

[Tcoat]

Originally Posted by ichitaka05

I was going to post Canadian joke... but I'll let someone else do it.

I said "us" implying everybody so Canada is not part of the picture.


But:
"Because maple syrup is liquid?"
"Beaver may have chewed the frame?"
"At -1000 everything is brittle?"

[EAGLE5]

Originally Posted by ichitaka05

Lil off-topic, but I've stated this in earlier here, but a ton of Japanese shop who race using 86/BRZ complained about weak frame... some shop have broken rear frame before. This is why Toyota/Subaru have reinforced the rear chassis on Kouki86.

Got any links? Photos of frames that fell apart?

[ichitaka05]

Originally Posted by jsimon7777

Got any links? Photos of frames that fell apart?

It was a while back in Japanese 86 sites/shop blog, but I'll look around.

[go_a_way1]

Originally Posted by Tcoat

A test on yours will be invalid for the rest of us. Any guesses why?

Lol cuz I am not a full member of team lava anymore??