Alum. Driveshaft

Tore · Tore on February 1st 2010, 9:52 pm

Are any of you guys running an alum. driveshaft? Besides the obvious wt. savings has anyone noticed a better et if they had switched from steel.

Thanks Tore

Nevs · Nevs on February 1st 2010, 9:56 pm

I've run the aluminum shaft. Can't honestly say it was worth any et though. This was in a high 7 second car for what it's worth, 2350#.

DILLIGASDAVE · DILLIGASDAVE on February 2nd 2010, 12:57 am

Hard to beat a good 'moly driveshaft. Don't have to be as carefull about hard dings & scratches when handeling that could lead to cracks/stress riser like you do with aluminum & carbon fiber

Thunderstruck · Thunderstruck on February 2nd 2010, 1:11 am

I've been running one for 4 yrs and I havent had any problems. Going to increase the HP by 350 this year.I will let you know if she holds up. Never noticed any gain over the moly shaft but that shinny utility pole under my car looks professional when I have to take it apart. Laughing

Mark Miller · Mark Miller on February 2nd 2010, 1:24 am

Tore,

My buddy has one in his NMRA Pure Street car he launches at 7,500 rpm and shifts at 8,500 rpm.It's still in one piece it's a 306 ci SBF and has ran 10.68 at 125 mph at 3,100 lbs.

Later Mark.

342g · 342g on February 3rd 2010, 9:39 pm

I ran the aluminum shaft all last season, just less rotating mass, which is always a good thing.

Tore · Tore on February 4th 2010, 9:50 pm

Thanks guys

bbf-falcon · bbf-falcon on February 7th 2010, 12:25 pm

Tore, The Maverick I had had a alum. shaft in it for 12+ years w/no problems. LiL Tweety has one but has yet to be tested w/any power at track. We will soon find out huh. Smile

IDT-572 · IDT-572 on February 7th 2010, 4:19 pm

I feel the rotating mass is almost a non issue. It's diameter is so small. The difference in weight is I think the only differenc and that's not a bunch, I am with Dilligas Dave on this one.

It's usually ugly when they fail also. Shocked

whatbumper · whatbumper on February 7th 2010, 10:22 pm

After seeing a carbon fiber shaft break and go through a guys back, I went with the CM shaft with a loop in the front and rear. We ran a small CM driveshaft for a couple years behind a sbf with about 1000hp and now will be making upwards of 1750hp so we went with what looks like a telephone pole. We have to weigh 3300lbs and will be seeing low 1.20 and maybe one-teen sixty foots so we were overly cautious.

I will be installing an aluminum driveshaft in my lower powered car though.

the Coug · the Coug on February 7th 2010, 10:29 pm

I like my 2 piece CM drive shaft it is easy to take out 4 bolts on each end.....

Randy

jbozzelle · jbozzelle on February 14th 2010, 2:02 pm

the Coug wrote:I like my 2 piece CM drive shaft it is easy to take out 4 bolts on each end.....

Randy

2 piece?

richter69 · richter69 on February 14th 2010, 4:13 pm

jbozzelle wrote:
the Coug wrote:I like my 2 piece CM drive shaft it is easy to take out 4 bolts on each end.....

Randy

2 piece?

bolts to the front yoke as well........just like the rear.

for the small gains alum would be worth................just do a cm unit and be done with it.

512Fairlane · 512Fairlane on February 14th 2010, 6:30 pm

I run an aluminum one only because Mark Williams was having a special on them when I went to order a new one. It saved about 7 lbs from my steel one but I really didn't notice any gains.

cwracing · cwracing on March 1st 2010, 4:52 pm

When you're running a class where it is difficult to get the car down to minimum weight, aluminum and carbonfiber driveshafts are the norm. I run in competition eliminator as an A/A and it is virtually impossible to get my car down to the minimum weight (especially given my budget and the fact that my wife is a great cook Wink

) So we run an aluminum shaft. But if your not concerned about the overall weight of your car, buy CM. It'll last forever.

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I run aluminum.

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