Aluminum driveshaft in race applications - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

GrandSport · 02-14-2025, 02:31 PM

Does anyone have one? How does it hold up? Any additional wear on the trans from being one piece? Any issues with critical speed?

NoHaveMSG · 02-14-2025, 08:35 PM

The DSS has a critical speed issue. I’ll link the thread later.

NoHaveMSG · 02-14-2025, 10:04 PM

Can’t believe this was 3 years ago @blsfrs . I did call DSS about this after since I was having massive vibration issues. I think they said they would redo the shaft with a different diameter at my cost and paying shipping. I passed on it. I think mine is still in my garage.

https://www.ft86club.com/forums/showthread.php?t=148537

GrandSport · 02-16-2025, 01:28 PM

Quote:

Originally Posted by NoHaveMSG

Can’t believe this was 3 years ago @blsfrs . I did call DSS about this after since I was having massive vibration issues. I think they said they would redo the shaft with a different diameter at my cost and paying shipping. I passed on it. I think mine is still in my garage.

https://www.ft86club.com/forums/showthread.php?t=148537

their solution was to sell you a one at your cost?

RT-BRZ · 02-16-2025, 02:58 PM

Thanks for bringing this up. I was considering going one piece but given the potential headaches I'll think I'll pass.

DarkPira7e · 02-16-2025, 05:14 PM

Aluminum takes up much more space, is more prone to failure (in an aftermarket application), Not to mention is scary if it does fail.

Carbon fiber or stock, in my opinion. I love my verus driveshaft but it's an early model when the company was still velox, I don't know what current variant feels like but it can't be too different.
You can feel the spring a little when you're shifting hard vs a solid thunk, but may be mostly placebo

NoHaveMSG · 02-16-2025, 11:59 PM

Quote:

Originally Posted by GrandSport

their solution was to sell you a one at your cost?

I deleted the email a long time ago but I think it was like 300+ for them to redo the shaft in a bigger diameter, no guarantee it would clear, and I would have to pay shipping back and forth.

blsfrs · 02-17-2025, 09:35 AM

A while ago, I think someone posted that the Gen 2 drive shaft was a little bit lighter.

DarkPira7e · 02-17-2025, 07:27 PM

Quote:

Originally Posted by blsfrs

A while ago, I think someone posted that the Gen 2 drive shaft was a little bit lighter.

Gpvecchi, the resident OEM everything enthusiast

ZDan · 02-20-2025, 03:18 PM

Quote:

Originally Posted by DarkPira7e

Aluminum takes up much more space, is more prone to failure (in an aftermarket application), Not to mention is scary if it does fail.

Aluminum has 1/3 the elastic modulus of steel, but you make up for it by making it significantly thicker-walled. Larger OD with 2x wall thickness and you easily get the same stiffness with less weight vs. steel.

Anyway, as in the other thread I'd recommend checking with Inland Empire Driveline, they made a custom drive shaft for my LS3 FD RX-7 rated to 200 mph in short order and price was not bad.

02-14-2025, 02:31 PM	#1
GrandSport Senior Member Join Date: Sep 2018 Drives: 13 Viper; 14 BRZ; 90 Miata; 18 AMG Location: TX Posts: 382 Thanks: 82 Thanked 230 Times in 128 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Aluminum driveshaft in race applications Does anyone have one? How does it hold up? Any additional wear on the trans from being one piece? Any issues with critical speed? __________________ 2014 BRZ: WRL Build (GP2) Gutted, caged, coilovers, AP enduro, etc- 2014 FRS: Similar WRL Build. Back up / parts / practice race car. 2013 Viper GTS : Tractive Coilovers, ACR sway bars, aero, carbon, exhaust, etc. 1992 NA Spec Miata: 1.6 + 1999 NB Spec Miata: 1.8 w/ all the goodies. 2022 CT5 Blackwing: Stock.

02-16-2025, 05:14 PM	#6
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 4,029 Thanks: 3,293 Thanked 4,179 Times in 2,100 Posts Mentioned: 33 Post(s) Tagged: 0 Thread(s)	Aluminum takes up much more space, is more prone to failure (in an aftermarket application), Not to mention is scary if it does fail. Carbon fiber or stock, in my opinion. I love my verus driveshaft but it's an early model when the company was still velox, I don't know what current variant feels like but it can't be too different. You can feel the spring a little when you're shifting hard vs a solid thunk, but may be mostly placebo __________________ Turbo FR-S Build - Build Thread JDL EL Recirc manifold, Boostlab BL58x Turbo w/ T51R, 17x9 ARC-8, IAG block

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RT-BRZ Senior Member Join Date: Jan 2021 Drives: 2013 Subaru BRZ Location: Columbus, OH Posts: 466 Thanks: 562 Thanked 290 Times in 180 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Thanks for bringing this up. I was considering going one piece but given the potential headaches I'll think I'll pass.

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blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,428 Thanks: 2,637 Thanked 1,421 Times in 676 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	A while ago, I think someone posted that the Gen 2 drive shaft was a little bit lighter.

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