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gtpvette · 10-14-2018, 11:47 AM

Well it’s a no go on the OEM sway bar. So,, after a bit of mockup it look like a Speedway Engineering 39” 1” .095 hollow bar is the choice. Based on some other speedway bars as compared to this one (see chart I had to guesstimate some of numbers) and assuming a 5” arm length, it should be in the 215ish range for a rate, up from 140ish for OEM. I think.

I’m going to end up with an ‘L’ shaped arm where one piece is stacked on top of the other. When coming up with a shape, the first issue is the bar is mounted lower than the OEM so the vertical portion of the ‘L’ is taller than the OEM. The next issue is the width of the bar, 39” which is too close to the chassis. By stacking the horizontal portion of the arm on the vertical piece it moves it away from the chassis and it now clears the bolts on the control arms at full droop. With the stacking it puts it at 40.5” wide where the links attached versus 41.5 for OEM. I may still try to bend the horizontal piece a bit to get to that 41.5”

Will order everything next week,,,, so ready to get past this part.

Bar in motion, 1" dowel rod mock up and a few iterations of arms..

[ame]http://youtu.be/c5pszWRc8w4[/ame]

10-14-2018, 11:47 AM	#307
gtpvette Senior Member Join Date: Mar 2015 Drives: 2015 FRS - FFR GTM Location: Key Largo, FL Posts: 788 Thanks: 241 Thanked 829 Times in 381 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Well it’s a no go on the OEM sway bar. So,, after a bit of mockup it look like a Speedway Engineering 39” 1” .095 hollow bar is the choice. Based on some other speedway bars as compared to this one (see chart I had to guesstimate some of numbers) and assuming a 5” arm length, it should be in the 215ish range for a rate, up from 140ish for OEM. I think. I’m going to end up with an ‘L’ shaped arm where one piece is stacked on top of the other. When coming up with a shape, the first issue is the bar is mounted lower than the OEM so the vertical portion of the ‘L’ is taller than the OEM. The next issue is the width of the bar, 39” which is too close to the chassis. By stacking the horizontal portion of the arm on the vertical piece it moves it away from the chassis and it now clears the bolts on the control arms at full droop. With the stacking it puts it at 40.5” wide where the links attached versus 41.5 for OEM. I may still try to bend the horizontal piece a bit to get to that 41.5” Will order everything next week,,,, so ready to get past this part. Bar in motion, 1" dowel rod mock up and a few iterations of arms.. [ame]http://youtu.be/c5pszWRc8w4[/ame] Attached Images __________________ 2015 FR-S - One Day I'll Finish The Swap