Trunk bracing for functional wing - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

1Cor10:23 · 01-18-2016, 12:24 PM

Hey guys,

Going to be installing a trunk-top mounted wing for next season and was looking into reinforcing my trunk a bit.

Essentially, I'm trying to figure out if I can mount something to "butt against" the downward force of the wing to help add rigidity to the trunk (prevent lifting of the leading edge)

1) First idea is to put rubber butts in upward direction, mount it to frame somewhere near the tailights so it will be pushing up against the underside of the trunk

2) 2nd idea is to put butts on trunk in downward direction similar to this:

Thoughts / experiences?

Thanks!

CSG Mike · 01-18-2016, 03:23 PM

What wing are you planning on using?

1Cor10:23 · 01-18-2016, 03:38 PM

Quote:

Originally Posted by CSG Mike

What wing are you planning on using?

GTC 200

CSG Mike · 01-18-2016, 03:42 PM

Quote:

Originally Posted by 1Cor10:23

GTC 200

You won't need to reinforce the trunk for that.

Let us know when you're ready to order!

Im_SPEED · 02-17-2017, 10:35 PM

Sorry to bring this back from the dead but what are people doing for trunk reinforcement for real wings?

Lunatic · 02-18-2017, 07:48 AM

I made my own mounts for the back of the trunk for my GT 250 wing as I believe this is less flexible than the top.

dradernh · 02-19-2017, 01:41 PM

Quote:

Originally Posted by Im_SPEED

Sorry to bring this back from the dead but what are people doing for trunk reinforcement for real wings?

Below is an example of what a race shop made up for me on a different car that had an SM203 wing mounted to it. While the wing's uprights went through the Kevlar decklid, the principle is the same: wing support strong enough that the car can be pushed by the wing without deflection.

Inside-the-Trunk Supporting Structure (bolted to the frame rail, the floor, and the back of the trunk)

Mounted Wing with the Decklid Removed

Mounted Wing with the Decklid in Place

Just for grins, this is the data for the SM203 (note: I ran the wing flat):

Im_SPEED · 02-19-2017, 10:34 PM

I can't do that per my classing rules the trunk has to operate as normal. I seen voltex has a cf reinfor ment but I can't find a place to buy it with out buying the wing too

dradernh · 02-19-2017, 10:44 PM

Quote:

Originally Posted by Im_SPEED

I can't do that per my classing rules the trunk has to operate as normal. I seen voltex has a cf reinfor ment but I can't find a place to buy it with out buying the wing too

A support of the type in the first photo won't require the operation of the trunk lid to be modified, and it will certainly support a "real wing".

01-18-2016, 12:24 PM	#1
1Cor10:23 Senior Member Join Date: Jul 2013 Drives: '13 Whiteout FR-S (M/T) Location: GTA Posts: 1,205 Thanks: 492 Thanked 392 Times in 238 Posts Mentioned: 14 Post(s) Tagged: 1 Thread(s)	Trunk bracing for functional wing Hey guys, Going to be installing a trunk-top mounted wing for next season and was looking into reinforcing my trunk a bit. Essentially, I'm trying to figure out if I can mount something to "butt against" the downward force of the wing to help add rigidity to the trunk (prevent lifting of the leading edge) 1) First idea is to put rubber butts in upward direction, mount it to frame somewhere near the tailights so it will be pushing up against the underside of the trunk 2) 2nd idea is to put butts on trunk in downward direction similar to this: Thoughts / experiences? Thanks! __________________ \|1Cor10:23 \| Whiteout FR-S \| Form Follows Function Build\| Last edited by 1Cor10:23; 01-18-2016 at 03:38 PM.

02-18-2017, 07:48 AM	#6
Lunatic Senior Member Join Date: Jan 2014 Drives: 2015 Raven FRS Location: Indio, CA. Just an Old Fart in a Automatic!. Posts: 1,614 Thanks: 7 Thanked 1,057 Times in 488 Posts Mentioned: 40 Post(s) Tagged: 2 Thread(s)	I made my own mounts for the back of the trunk for my GT 250 wing as I believe this is less flexible than the top. Attached Images

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01-18-2016, 03:23 PM	#2
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,564 Thanks: 8,942 Thanked 14,213 Times in 6,856 Posts Mentioned: 970 Post(s) Tagged: 14 Thread(s)	What wing are you planning on using?

02-17-2017, 10:35 PM	#5
Im_SPEED Senior Member Join Date: Aug 2012 Drives: FRS hot lava Location: Oregon Posts: 151 Thanks: 9 Thanked 32 Times in 16 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Sorry to bring this back from the dead but what are people doing for trunk reinforcement for real wings?

02-19-2017, 10:34 PM	#8
Im_SPEED Senior Member Join Date: Aug 2012 Drives: FRS hot lava Location: Oregon Posts: 151 Thanks: 9 Thanked 32 Times in 16 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	I can't do that per my classing rules the trunk has to operate as normal. I seen voltex has a cf reinfor ment but I can't find a place to buy it with out buying the wing too

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