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QA1 CF Driveshaft

madlag

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I have a QA1 CF Driveshaft on order along with a FP driveshaft safety loop. its less than half the rotating weight of the factory two piece shaft and rated for 1000 or so HP so I dont suspect I'll snap it. I've heard good stuff in general about them. Anyone else running one?
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Austinj427

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Pretty sure Tob was running one and was very happy with it overall.
 

Niz55

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Any more updates on the shaft? Mostly concern about high speed vibration.
 

Offboost

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Any more updates on the shaft? Mostly concern about high speed vibration.

I left multiple emails with QA1 about what RPM it is rated for and never even got a response. I was highly interested in this unit after reading about Tobs success and documented install but a company that wont respond to emails is not worth doing business with in my opinion.
 

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madlag

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Dr. JL

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I have one on my R. The quality is awesome. It eliminiates the bucking when off-throttle at slow speeds and all-but-eliminates drivetrain vibration. I didn't note a difference to rev/throttle response (the JMS Pedalmax fixed that). I highly recommend getting one.
 

Niz55

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I have one on my R. The quality is awesome. It eliminiates the bucking when off-throttle at slow speeds and all-but-eliminates drivetrain vibration. I didn't note a difference to rev/throttle response (the JMS Pedalmax fixed that). I highly recommend getting one.
Have you noticed any high speed vibration? Also how fast have you gone with it?
 

Dr. JL

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Zero vibration. Not faster than triple-digits. I was initially hesitant to fork out the cash, but know I think these cars should have come with this driveshaft. It’s worth the weight savings and reduction of bucking and vibration.
 

ldp82

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I had one put in recently. It smooths out on and off throttle esp. in 6th on the highway. Seems to shift a little better. Might rev up better. Not a night and day difference to me but makes the car a little nicer.
 

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Dr. JL

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^i agree 100%
 

Epiphany

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Thank you sir for the write up. Looks promising then... sounds like you had less NVH for sure. Could you tell a difference in rev or throttle response?

I'd have to agree with the comments above. The difference was subtle but always there.
 

Chainsaw

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I left multiple emails with QA1 about what RPM it is rated for and never even got a response. I was highly interested in this unit after reading about Tobs success and documented install but a company that wont respond to emails is not worth doing business with in my opinion.
QA1 balances the driveshaft at 9000 rpm.
 
 




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