Verus Carbon Fiber Driveshaft - New revision
 

Received new driveshaft & installed yesterday. Much different design from pictures on website. They assured me it was fully tested, and stronger than previous. Not sure why that was needed, or what they are correcting. Weight now over 15 lb. Have vibration at 80 mph and over. Waiting for Verus response.

Response about what exactly?

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Well that's not good. I also have vibration beyond 80 mph but with an alu driveshaft and was hoping a carbon one would take care of that.

Interesting. Maybe the design was changed for a universal jig application (vs per model production)

This is mine fresh from the box 2 years ago

Vibration issue.

But should you expect a lil bit of vibration at those speeds?

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No. Vibration is really really hard on shit.

any other stiffening mods to the car like bushings etc? Also how many miles on your tranny, you can check the bushing between the driveshaft yoke inserts into the tranny to see if its been wiped

shouldnt vibrate at all.

back in time when i had RSX-S, i had aftermarket stiffened motor mounts which vibrates at idle which is normal but vibrating at driving is not normal. (educate me if incorrect)

@VerusEric Can you give any information on why you transitioned to CV joint on the driveshaft?

21K, poly bushing inserts in diff & subframe. Was smooth as silk before driveshaft. No other mods made at same time.

Not unexpected, Verus has requested that I rotate 90° and retest.

Will report back.

FWIW, I've rotated my - albeit - aluminum driveshaft through all 4 positions and some of them delayed the onset of vibration by maybe 2-3 mph, but not cured it. So I'm going back to stock.

Quite a lot of people have had the same experience. Do you also have trans/diff bushing / stiffer engine/trans mounts?

Current thinking is that the 2 shaft design was paired specifically with the potential NVH of 86 platform to remove vibrations and break potential resonance. Carbon fiber provided some dampening and people generally got better results compared to AL

It could be a self selection bias here where the only people that get one piece driveshafts are the ones that want stiffer response everywhere in the drivetrain by add stiffening, more NVH is added as input and the chassis + one piece driveshaft gives the resonant vibration transfer function. I also have a DSS aluminum without any bushing/mounts and its fine even to 105mph. Just a datapoint.

This is also assuming the tail bushing on your trans isn't wiped