Spring Rubbers? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Stang70Fastback · 05-24-2016, 08:07 PM

Does anyone have any experience with these? I'm wondering if it might be a good compromise to allow me to keep the spring rates that I have (which I like) but allow me to bump up the spring rate for autocross days.

Any pros/cons of using them? Are they allowed in STX? Does anyone make them specifically for my KW V3 coilovers? I've never used them before, so I'm just looking for input.

To clarify, this is what I am referring to:

8R6 · 05-24-2016, 08:20 PM

arent those spring spacers only used for transportation purposes? like when the oem's ship out their cars to the ports and the ports to the dealer lots.

ryoma · 05-24-2016, 09:50 PM

that looks really sketchy to me lol.

15limited · 05-24-2016, 10:16 PM

You're running V3 coil overs and are trying to use a gimmick like "spring rubbers"?

Sent from my 2PQ93 using Tapatalk

Stang70Fastback · 05-24-2016, 10:49 PM

I've seen them used by other folks at autocross. I don't really know much about them, so I was curious if they were common or not. One guy slipped them into the springs on his restomodded Camaro after a run to stiffen up the rear and eliminate some understeer.

It seemed kind of sketchy to me too but the little bit of Googling I did at work today led me to believe they are used in NASCAR and things so it can't be completely brainless, but maybe it isn't a good idea. I have no idea. Was just looking for a way to increase the spring rate without changing the spring.

strat61caster · 05-25-2016, 02:26 AM

Quote:

Originally Posted by Stang70Fastback

I've seen them used by other folks at autocross. I don't really know much about them, so I was curious if they were common or not. One guy slipped them into the springs on his restomodded Camaro after a run to stiffen up the rear and eliminate some understeer.

It seemed kind of sketchy to me too but the little bit of Googling I did at work today led me to believe they are used in NASCAR and things so it can't be completely brainless, but maybe it isn't a good idea. I have no idea. Was just looking for a way to increase the spring rate without changing the spring.

Spring rubbers will be categorized by spring size, go for a search see if you can find something that looks like it fits and if it's affordable buy it. I think V3's are 60mm springs but I'm not positive, it will likely take some legwork to find the right parts.

Yes, it's been a staple in NASCAR for decades, also Indycar and Outlaw/Sprint Cars. I say try it, maybe it's the perfect fit, maybe it's a disaster, maybe it's the ticket to top time of the day. Trying things is how you find an edge.

Stang70Fastback · 05-25-2016, 02:44 AM

I just want to make sure I won't damage anything. I can't see why it would, though. Thanks for the info!

Gunman · 05-25-2016, 12:57 PM

We use spring rubbers all the time, it's the only way you can change spring rate during a pit stop

gramicci101 · 05-25-2016, 01:01 PM

Quote:

Originally Posted by Gunman

We use spring rubbers all the time, it's the only way you can change spring rate during a pit stop

How does one calculate the new spring rate to make sure you're getting what you want?

Shankenstein · 05-25-2016, 01:56 PM

It's not a simple calculation.

Spring rates are based on the diameter of the "wire", diameter of the coil, and the number of active coils.

LINK to Engineer's Edge

Spring rubber supports and couples the motion of adjacent coils. It doesn't completely deactivate a coil, but it reduces its contribution to the active coil count. Less effective coils = stiffer overall rate.

You can see in the table below that it can add 5-10% to the effective spring rate.

LINK to Hot Rod Magazine article

For the record, you can do this very safely. It's better to run the right spring... but you won't damage anything, even with multiple coils coupled.

Leonardo · 05-25-2016, 02:03 PM

I seriously thought it was going to be this. Sorry, Guess I'm down in OT too much...

strat61caster · 05-25-2016, 05:31 PM

Quote:

Originally Posted by Leonardo

I seriously thought it was going to be this. Sorry, Guess I'm down in OT too much...

Stang70Fastback · 05-25-2016, 06:00 PM

Ha! I am running those coilover covers tho, haha.

Norville Rogers · 05-25-2016, 06:24 PM

I've used these for years in other vehicles. Mostly for preventing rear sag when heavily loaded.

Booze cruises etc ��

Never had any problems and worked perfectly

05-24-2016, 08:07 PM	#1
Stang70Fastback A.K.A. Starlord Join Date: Oct 2013 Drives: 2015 Series.Blue Location: Illinois Posts: 1,842 Thanks: 845 Thanked 2,100 Times in 834 Posts Mentioned: 30 Post(s) Tagged: 3 Thread(s)	Spring Rubbers? Does anyone have any experience with these? I'm wondering if it might be a good compromise to allow me to keep the spring rates that I have (which I like) but allow me to bump up the spring rate for autocross days. Any pros/cons of using them? Are they allowed in STX? Does anyone make them specifically for my KW V3 coilovers? I've never used them before, so I'm just looking for input. To clarify, this is what I am referring to:

05-24-2016, 08:20 PM	#2
8R6 Senior Member Join Date: Jan 2014 Drives: FRS Location: SoCal Posts: 2,086 Thanks: 2,738 Thanked 1,339 Times in 746 Posts Mentioned: 30 Post(s) Tagged: 2 Thread(s)	arent those spring spacers only used for transportation purposes? like when the oem's ship out their cars to the ports and the ports to the dealer lots. __________________ Team BRG inspire-usa My car build #8R6

05-24-2016, 09:50 PM	#3
ryoma Senior Member Join Date: Mar 2015 Drives: 2015 Subaru BRZ Limited CWP Location: SoCal Posts: 1,561 Thanks: 34 Thanked 669 Times in 469 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	that looks really sketchy to me lol. __________________ My 2015 CWP BRZ Build

05-24-2016, 10:16 PM	#4
15limited Senior Member Join Date: Apr 2015 Drives: BRZ Location: PNW Posts: 387 Thanks: 456 Thanked 150 Times in 113 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	You're running V3 coil overs and are trying to use a gimmick like "spring rubbers"? Sent from my 2PQ93 using Tapatalk __________________ Perrin Transmission Bolt, Drift Button,Intake Tube, Radiator Hoses, Engine Mounts, Gurney Flap Diode Dynamics Always On Module OLM 3k HID Foglights GCS Smoked Side Markers Motul Gear 300/300 V OE Acantara arm rest Password JDM Dry Carbon rear diffuser Rally Armour Mud flaps H.I.C side & rear visor Gruppe-S UEL header/OP HKS Front Pipe Leg Sport Cat Back Koyorad aluminum radiator Wheelhaus CF low pro 3rd brake light Toms JDM Clear Tail Lamps

05-25-2016, 01:56 PM	#10
Shankenstein Frosty Carrot Join Date: Jan 2013 Drives: The Atomic Carrot Location: Baltimore, MD Posts: 513 Thanks: 272 Thanked 431 Times in 199 Posts Mentioned: 19 Post(s) Tagged: 0 Thread(s)	It's not a simple calculation. Spring rates are based on the diameter of the "wire", diameter of the coil, and the number of active coils. LINK to Engineer's Edge Spring rubber supports and couples the motion of adjacent coils. It doesn't completely deactivate a coil, but it reduces its contribution to the active coil count. Less effective coils = stiffer overall rate. You can see in the table below that it can add 5-10% to the effective spring rate. LINK to Hot Rod Magazine article For the record, you can do this very safely. It's better to run the right spring... but you won't damage anything, even with multiple coils coupled. __________________ If you think you're nerd enough, join in the discussions about Suspension and Aerodynamic modelling! Wall of Fame - JDL Auto Design, Raceseng, Vishnu Tuning, Penske Shocks, Nameless, Perrin, RaceComp Engineering, Essex/AP Racing, Verus, RacerX Wall of Shame - aFe Takeda, Wilwood, FA20Club

05-24-2016, 10:49 PM	#5
Stang70Fastback A.K.A. Starlord Join Date: Oct 2013 Drives: 2015 Series.Blue Location: Illinois Posts: 1,842 Thanks: 845 Thanked 2,100 Times in 834 Posts Mentioned: 30 Post(s) Tagged: 3 Thread(s)	I've seen them used by other folks at autocross. I don't really know much about them, so I was curious if they were common or not. One guy slipped them into the springs on his restomodded Camaro after a run to stiffen up the rear and eliminate some understeer. It seemed kind of sketchy to me too but the little bit of Googling I did at work today led me to believe they are used in NASCAR and things so it can't be completely brainless, but maybe it isn't a good idea. I have no idea. Was just looking for a way to increase the spring rate without changing the spring.

05-25-2016, 02:44 AM	#7
Stang70Fastback A.K.A. Starlord Join Date: Oct 2013 Drives: 2015 Series.Blue Location: Illinois Posts: 1,842 Thanks: 845 Thanked 2,100 Times in 834 Posts Mentioned: 30 Post(s) Tagged: 3 Thread(s)	I just want to make sure I won't damage anything. I can't see why it would, though. Thanks for the info!

05-25-2016, 02:03 PM	#11
Leonardo Country Boy 4 Life Join Date: Jul 2012 Drives: 19' & 06' Ridgelines, 13' FR-S Location: EUGENE Posts: 5,228 Thanks: 6,719 Thanked 5,293 Times in 2,720 Posts Mentioned: 47 Post(s) Tagged: 1 Thread(s)	I seriously thought it was going to be this. Sorry, Guess I'm down in OT too much...

05-25-2016, 06:00 PM	#13
Stang70Fastback A.K.A. Starlord Join Date: Oct 2013 Drives: 2015 Series.Blue Location: Illinois Posts: 1,842 Thanks: 845 Thanked 2,100 Times in 834 Posts Mentioned: 30 Post(s) Tagged: 3 Thread(s)	Ha! I am running those coilover covers tho, haha.

05-25-2016, 06:24 PM	#14
Norville Rogers Banned Join Date: Feb 2016 Drives: Subaru BRZ Location: U.K. Posts: 139 Thanks: 142 Thanked 238 Times in 167 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I've used these for years in other vehicles. Mostly for preventing rear sag when heavily loaded. Booze cruises etc �� Never had any problems and worked perfectly

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