FT-86 SpeedFactory LCA by Verus - Lightest LCA for the Twins - Development Thread - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

FT-86 SpeedFactory · 02-15-2015, 07:08 PM

We have been working on several projects with Velox and will be unveiling them over the next few weeks. First up we have a new LCA that is in development and soon undergoing testing on a couple time attack cars.

There are a lot of options out there when it comes to Lower Control Arms for the twins. You have simple units like the SPC arms all the way up to full CNC Aluminum ones as we'll see below.

The factory lower control arm as I am sure you all know lacks any sort of camber adjustment. This does not work very well for those of us who decide to lower the vehicle or do any sort of motorsports with the car. Working with Velox it was decided to completely redesign the LCA to reduce the most amount of unsprung weight possible, give racers a lightweight and durable solution.

To get started we got 3D models of the OEM unit.

So how can this be improved upon?

1. Weight: Lighter than the OEM and other aftermarket units. This helped us determine which material to use.

2. Packaging: We wanted our LCA to retain OEM mounting points. This allows the LCA to be used on a stock suspension set-up , as well as coilovers, and not lower the rear of the vehicle like other units geared more towards stance. This is what ruled out the above design.

3. Manufacturing: We decided early on that we wanted a machined component. With a cut, bent, and welded steel unit, tolerances are looser and heavily dependent on the shop doing the work. On the other hand, a modern CNC machine can hit tolerances tighter than 0.005″ without breaking a sweat.

4. Strength: We knew we wanted a LCA that was ready to hit the track. From daily drivers, to enthusiasts, to all out time attack cars, this LCA had to be handle the punishment.

Several ideas were constructed but weight was still a tad high.

A finial design was settled upon once more weight savings was created.

Everything has been created via 3D models from OEM supplied 3D data. It doesn't get any more precise then this guys.

The stock LCA overlaid on ours.

Stay tuned as we test tension, deflection, and overall strength.

was385 · 02-15-2015, 07:15 PM

Will this be available with poly bushings for us autox guys? Any idea on price range or guess on when they'll be available? Looks good.

Mad1723 · 02-15-2015, 07:30 PM

No toe adjustment out of the box like the SPC?

FT-86 SpeedFactory · 02-15-2015, 07:50 PM

Quote:

Originally Posted by Mad1723

No toe adjustment out of the box like the SPC?

Toe is controlled by a completely different arm. SPC provides a bushing you have to have pressed out of the factory toe arm and then press in their bushing in order to get toe adjustment. SPC is also stamped steal arm that uses a bolt for camber adjustment that can slip under heavy load.

Factory toe adjustment we have found to be plenty for our racing applications.

Mad1723 · 02-15-2015, 08:23 PM

Quote:

Originally Posted by FT-86 SpeedFactory

Toe is controlled by a completely different arm. SPC provides a bushing you have to have pressed out of the factory toe arm and then press in their bushing in order to get toe adjustment. SPC is also stamped steal arm that uses a bolt for camber adjustment that can slip under heavy load.

Factory toe adjustment we have found to be plenty for our racing applications.

Good to know. I'll keep an eye on this

D_Thissen · 02-15-2015, 08:34 PM

Looks awesome guys. Any idea of a price range or release date?

cdrazic93 · 02-15-2015, 09:53 PM

+1

s2d4 · 02-15-2015, 10:02 PM

Can this be adjusted on the car or will it be like the Cusco ones?

akyp · 02-16-2015, 01:17 AM

Mounting hole for the sensor of self-leveling headlamps on GT86?

eric6 · 02-16-2015, 02:45 AM

Quote:

Originally Posted by s2d4

Can this be adjusted on the car or will it be like the Cusco ones?

They are designed to be adjusted on car. If significant adjustment is needed, it will be suggested to thread the adjuster out and thread the rod end in. This is to ensure that the threads won't get stripped out. The instructions will have further information on this subject.

Quote:

Originally Posted by akyp

Mounting hole for the sensor of self-leveling headlamps on GT86?

Not currently, but something we can definitely discuss.

eric6 · 02-16-2015, 02:49 AM

Quote:

Originally Posted by D_Thissen

Looks awesome guys. Any idea of a price range or release date?

I'll let @FT-86 SpeedFactory answer those questions with numerical answers. I can comment on the pricing... it will be competitive with what's on the market now.

swarb · 02-16-2015, 03:17 AM

6061? 7075? heat treated?
Looks good!

was385 · 02-16-2015, 09:19 AM

Quote:

Originally Posted by eric6

I'll let @FT-86 SpeedFactory answer those questions with numerical answers. I can comment on the pricing... it will be competitive with what's on the market now.

Will this also have an option for rubber or poly bushings to keep STX legality for autox?

eric6 · 02-16-2015, 10:20 AM

Quote:

Originally Posted by swarb

6061? 7075? heat treated?
Looks good!

The materials is roughly 25% stronger then 6061-T6 but weaker then 7075. 7075 would put us out of price range for most customers. We have thought about running a few sets from 7075 for the time attack guys pushing 2+ G in turns, just as an added safety margin.

Quote:

Originally Posted by was385

Will this also have an option for rubber or poly bushings to keep STX legality for autox?

Currently, it will not. Another thing we can discuss before the production run.

02-15-2015, 07:08 PM	#1
FT-86 SpeedFactory Join Date: Jul 2012 Drives: 2013 Scion FR-S Location: Des Moines, IA Posts: 7,694 Thanks: 1,298 Thanked 3,578 Times in 1,253 Posts Mentioned: 341 Post(s) Tagged: 5 Thread(s)	FT-86 SpeedFactory LCA by Verus - Lightest LCA for the Twins - Development Thread We have been working on several projects with Velox and will be unveiling them over the next few weeks. First up we have a new LCA that is in development and soon undergoing testing on a couple time attack cars. There are a lot of options out there when it comes to Lower Control Arms for the twins. You have simple units like the SPC arms all the way up to full CNC Aluminum ones as we'll see below. The factory lower control arm as I am sure you all know lacks any sort of camber adjustment. This does not work very well for those of us who decide to lower the vehicle or do any sort of motorsports with the car. Working with Velox it was decided to completely redesign the LCA to reduce the most amount of unsprung weight possible, give racers a lightweight and durable solution. To get started we got 3D models of the OEM unit. So how can this be improved upon? 1. Weight: Lighter than the OEM and other aftermarket units. This helped us determine which material to use. 2. Packaging: We wanted our LCA to retain OEM mounting points. This allows the LCA to be used on a stock suspension set-up , as well as coilovers, and not lower the rear of the vehicle like other units geared more towards stance. This is what ruled out the above design. 3. Manufacturing: We decided early on that we wanted a machined component. With a cut, bent, and welded steel unit, tolerances are looser and heavily dependent on the shop doing the work. On the other hand, a modern CNC machine can hit tolerances tighter than 0.005″ without breaking a sweat. 4. Strength: We knew we wanted a LCA that was ready to hit the track. From daily drivers, to enthusiasts, to all out time attack cars, this LCA had to be handle the punishment. Several ideas were constructed but weight was still a tad high. A finial design was settled upon once more weight savings was created. Everything has been created via 3D models from OEM supplied 3D data. It doesn't get any more precise then this guys. The stock LCA overlaid on ours. Stay tuned as we test tension, deflection, and overall strength.

02-15-2015, 08:34 PM	#6
D_Thissen Senior Member Join Date: Jan 2014 Drives: '13 Argento FR-S (Sold) Location: Ontario Posts: 2,126 Thanks: 3,209 Thanked 1,439 Times in 855 Posts Mentioned: 19 Post(s) Tagged: 2 Thread(s)	Looks awesome guys. Any idea of a price range or release date? __________________ My FR-S Build IG: dthissen

02-15-2015, 09:53 PM	#7
cdrazic93 Junior Join Date: Aug 2013 Drives: a car Location: Probably at school Posts: 4,341 Thanks: 3,184 Thanked 2,512 Times in 1,502 Posts Mentioned: 20 Post(s) Tagged: 0 Thread(s)	+1 __________________ "Ah! What music! They could have never imagined, those pioneers who invented the automobile, that it would posses us like this, our imaginations, our dreams. Men love women, but even more than that, men love CARS!"-Lord Hesketh

02-15-2015, 10:02 PM	#8
s2d4 Senior Member Join Date: Mar 2013 Drives: R32 GTR, AW11 MR2 SC, GTS86 R Location: OZ Posts: 2,615 Thanks: 603 Thanked 1,223 Times in 708 Posts Mentioned: 35 Post(s) Tagged: 0 Thread(s)	Can this be adjusted on the car or will it be like the Cusco ones? __________________

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02-15-2015, 07:15 PM	#2
was385 Senior Member Join Date: May 2012 Drives: MT WRB BRZ Limited, 2007 911s Location: CT Posts: 812 Thanks: 218 Thanked 381 Times in 181 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Will this be available with poly bushings for us autox guys? Any idea on price range or guess on when they'll be available? Looks good.

02-15-2015, 07:30 PM	#3
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02-16-2015, 01:17 AM	#9
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02-16-2015, 03:17 AM	#12
swarb Senior Member Join Date: Sep 2014 Drives: BRZ Location: Los Angeles Posts: 3,053 Thanks: 1,773 Thanked 2,451 Times in 1,271 Posts Mentioned: 79 Post(s) Tagged: 0 Thread(s)	6061? 7075? heat treated? Looks good!

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