Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB

Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB (https://www.ft86club.com/forums/index.php)
-   Suspension | Chassis | Brakes -- Sponsored by 949 Racing (https://www.ft86club.com/forums/forumdisplay.php?f=59)
-   -   FT-86 SpeedFactory LCA by Verus - Lightest LCA for the Twins - Development Thread (https://www.ft86club.com/forums/showthread.php?t=82474)

FT-86 SpeedFactory 02-15-2015 08:08 PM

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. :)
http://ft86speedfactory.com/images/ft86lca-1.JPG

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.
http://ft86speedfactory.com/images/ft86lca-2.JPG


A finial design was settled upon once more weight savings was created.
http://ft86speedfactory.com/images/ft86lca-3.JPG

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.
http://ft86speedfactory.com/images/ft86lca-4.JPG

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

was385 02-15-2015 08:15 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 08:30 PM

No toe adjustment out of the box like the SPC? :(

FT-86 SpeedFactory 02-15-2015 08:50 PM

Quote:

Originally Posted by Mad1723 (Post 2133573)
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 09:23 PM

Quote:

Originally Posted by FT-86 SpeedFactory (Post 2133595)
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 :) :w00t:

D_Thissen 02-15-2015 09:34 PM

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

cdrazic93 02-15-2015 10:53 PM

+1

s2d4 02-15-2015 11:02 PM

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

akyp 02-16-2015 02:17 AM

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

eric6 02-16-2015 03:45 AM

Quote:

Originally Posted by s2d4 (Post 2133714)
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 (Post 2133894)
Mounting hole for the sensor of self-leveling headlamps on GT86?

Not currently, but something we can definitely discuss.

eric6 02-16-2015 03:49 AM

Quote:

Originally Posted by D_Thissen (Post 2133623)
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 04:17 AM

6061? 7075? heat treated?
Looks good!

was385 02-16-2015 10:19 AM

Quote:

Originally Posted by eric6 (Post 2133943)
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 11:20 AM

Quote:

Originally Posted by swarb (Post 2133966)
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 (Post 2134094)
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.


All times are GMT -4. The time now is 12:01 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2026 DragonByte Technologies Ltd.


Garage vBulletin Plugins by Drive Thru Online, Inc.