Theoretical Spring Rate Discussion - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

x808drifter · 02-28-2017, 04:18 PM

I know someone (not me) who in into the herrafrush lyfe.

He thinks putting 34k (1,900lb/in) springs on our car would be ok for a daily.
"They re-valved it for 34k, and they're swift springs, so should be fine."

I may not have screwed with physics since high school, but this screams failure waiting to happen to me.

Those spring rates on our car would essentially be like welding the suspension solid right?

Am I wrong?
Am I right?

What if anything will break on his car?
Our roads suck.

The more in depth the responses the better, I'm hoping to get him to read this.

Racecomp Engineering · 02-28-2017, 04:18 PM

lol

Racecomp Engineering · 02-28-2017, 04:22 PM

The bit about "they're Swift springs, so should be fine" got me.

You're right, it's not a great idea. I'd expect bent camber plates, maybe mushrooming strut towers.

- Andrew

asdf · 02-28-2017, 04:36 PM

8RZ · 02-28-2017, 04:39 PM

Yeah, sure... "Asking for a friend" lol.

x808drifter · 02-28-2017, 04:44 PM

Quote:

Originally Posted by 8RZ

Yeah, sure... "Asking for a friend" lol.

I know how that looks, but yeah.
I am NOT about that my cars too low to use scene.

8RZ · 02-28-2017, 04:49 PM

I'm just giving you a hard time, man.

That's an insanely stiff spring rate for DD, my opinion.

finch1750 · 02-28-2017, 04:50 PM

Quote:

Originally Posted by Racecomp Engineering

lol

Clipdat · 02-28-2017, 05:03 PM

His spine.

Quote:

Originally Posted by x808drifter

What if anything will break on HIM?
Our roads suck.

Tcoat · 02-28-2017, 05:07 PM

Edit: Damnit too slow AGAIN^! I need to get back on my game.

What will break?

Well for starters:

GSpeed · 02-28-2017, 05:19 PM

Quote:

Originally Posted by Racecomp Engineering

lol

qft

strat61caster · 02-28-2017, 05:46 PM

This is why people are advised against buying stanced cars, a suspension that was designed to compress up to 2" or more to soak up bumps in the road will now be moving a max of 0.5" that energy still has to go somewhere and it'll go into the sheetmetal which is now more flexible than the suspension.

richie incognito · 02-28-2017, 05:53 PM

Theoretically, how dumb is your friend. The more in depth the response the better.

strat61caster · 02-28-2017, 06:26 PM

Quote:

Originally Posted by richie incognito

Theoretically, how dumb is your friend. The more in depth the response the better.

Smart enough to not put himself in the line of fire.

02-28-2017, 04:18 PM	#1
x808drifter LMGTFY Join Date: Mar 2016 Drives: 13 FRS, 91 Miata Location: Lava Town, HI Posts: 2,776 Thanks: 5,561 Thanked 3,650 Times in 1,625 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Theoretical Spring Rate Discussion I know someone (not me) who in into the herrafrush lyfe. He thinks putting 34k (1,900lb/in) springs on our car would be ok for a daily. "They re-valved it for 34k, and they're swift springs, so should be fine." I may not have screwed with physics since high school, but this screams failure waiting to happen to me. Those spring rates on our car would essentially be like welding the suspension solid right? Am I wrong? Am I right? What if anything will break on his car? Our roads suck. The more in depth the responses the better, I'm hoping to get him to read this. Last edited by x808drifter; 03-01-2017 at 04:09 PM.

02-28-2017, 05:07 PM	#10
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,841 Thanks: 61,656 Thanked 108,295 Times in 46,456 Posts Mentioned: 2499 Post(s) Tagged: 50 Thread(s)	Edit: Damnit too slow AGAIN^! I need to get back on my game. What will break? Well for starters: __________________ Racecar spelled backwards is Racecar, because Racecar.

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02-28-2017, 04:18 PM	#2
Racecomp Engineering Join Date: Nov 2011 Drives: 2016 BRZ, 2012 Paris Di2 & 2018 STI Location: Severn, MD Posts: 5,517 Thanks: 3,541 Thanked 7,412 Times in 3,032 Posts Mentioned: 310 Post(s) Tagged: 9 Thread(s)	lol

02-28-2017, 04:22 PM	#3
Racecomp Engineering Join Date: Nov 2011 Drives: 2016 BRZ, 2012 Paris Di2 & 2018 STI Location: Severn, MD Posts: 5,517 Thanks: 3,541 Thanked 7,412 Times in 3,032 Posts Mentioned: 310 Post(s) Tagged: 9 Thread(s)	The bit about "they're Swift springs, so should be fine" got me. You're right, it's not a great idea. I'd expect bent camber plates, maybe mushrooming strut towers. - Andrew

02-28-2017, 04:36 PM	#4
asdf Loading...████████] 99% Join Date: Jul 2013 Drives: #0517 Location: southern california Posts: 586 Thanks: 227 Thanked 251 Times in 171 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)

02-28-2017, 05:53 PM	#13
richie incognito Senior Member Join Date: Jan 2017 Drives: BRZ- all the colours Location: Toronto Posts: 101 Thanks: 4 Thanked 22 Times in 15 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Theoretically, how dumb is your friend. The more in depth the response the better.

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