how will aluminum driveshaft affect lap times, if at all?

All over the world, Nissan products are involved in road racing, track days, time attack and autocross.
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glitched
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anyone know?


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sr20goofus
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glitched wrote:anyone know?
the AL driveshaft will cut down on your car total weight, and the rotational weight used to power the rear wheels. So in a sense you will be able to accelerate a little quicker, possibly helping your times.

odds are your times can be moer affected by doing more auto-x's, seat time is more valuable than any part you can throw at your car to make it faster.

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glitched
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SO far this season I've been grabbing 1sts in my class...

except when this one guy shows up every once in a while and beats me by a few tenths or somthing...

sileightysomeday
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Im wondering the same thing... I run in the Central Florida SCCA autox in DSP and theres this S14 with race tires that beats me, haha. argh...

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crackler
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R-comps are usually worth 3 seconds give or take.

The less rotating mass the better, but i doubt if an aluminum drive shaft would make a lot of difference in accel/decel. the further off the center line the more it affects accel/decel. think of it on tires. The tires weight has more effect than the wheels weight has more effect than the lug nuts weight. but don't confuse unsprung weight with rotating mass. I would agree with goofus that seat time is of more value than a new drive shaft. imho, I would say a few tenths at most, and that is factoring in a national level driver behind the wheel

seat time is the best money spent, because it goes with you from car to car. learn to drive a slow car fast and you can drive any car fast.

I HATE heavy cars, thats why I now have a miata, but once I get good at driving it, (read: maintaining momentum) then I feel that I will be able to drive ant fast car fast, and the slow ones fast as well. the slower the car is the more your mistakes are magnified, the more it forces YOU to be a better driver, A weak driver blames the car, a smart driver rarely blames the car. focus more on where YOU can make improvements as opposed to where the car needs it, it will help YOU the driver in the long run. It is slow and painful but it is worth it. Unless you just want to brag to all your friends about what a bad *** you are. R-comps hide a lot of mistakes as well.

And not to knock your d!ck into the dirt, but if you are winning your class at every event, unless one other guy shows up, than I would suggest looking at your PAX index (assuming that your region uses pax). Or switch classes. Being the fastest driver in your class never made any one any faster, chasing that last tenth did though. You might want to bump your self up a class, just to get some more competition, unless you are just in it for bragging rights.

just ignore me and my soap box, I am all ****ed u on vodka and redbull

in summary, street tires and a slow car with crap suspension will make you a better driver, an A-D won't make that much of a difference, get more seat time instead. but I am also frunk as duck.

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Soravia
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Aluminum shafts would be good for a torquless car. That's why RX-8 has a composite drive shaft.

96_S14_SE
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sileightysomeday wrote:Im wondering the same thing... I run in the Central Florida SCCA autox in DSP and theres this S14 with race tires that beats me, haha. argh...
Sorry to go OT... but surprise

You ran one event man! Sorry to say, but that was the first time I ever ran my car on R-comps (take offs - they were used for a national run-off and sat for 1.5 years and only a 205-50 c50 kook). The car has been DSP prepped for quite a few events from quite a few seasons. I am 6-9 seconds faster then brandy is now who usually takes 2nd in the 98' (that event I was only 2 seconds), and I finally brought my car back up to spec where it was in previous years this weekend (it sat for 1.5 years after I got my GTI, which now has sat for 4 months and will shortly be sold).

I have a few more tricks to pull until the next event. I sat this month out putting "new" (for the first time) front brakes on ( I had a set of take off rotors and pads on the car for the past 8 months / events from a fellow members spindle pull i did from a wrecked car, that had sat in my garage for 3 years before I put them on even). Last month I drove brandy's car, as I wrecked a tie rod in mine.

Not to be harsh but I would beat you in my old take off used street tires too. I have 8 years of *** time in that car haha! I am going for 10 seconds over second in DSP next month. In the end though it is still a peg legging, slush box shifting, 198k mile having, hell of a fun grippy ride.

Shoot me an email [email protected] and come to the sept event, we need more 240s.

-Lloyd
Modified by 96_S14_SE at 5:35 AM 8/24/2007


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