Driveshaft and Half Shaft Weights

[Guest]

Re: Driveshaft and Half Shaft Weights

Ron, looking at some early stock Big block half Shafts , looks like some sore of weight weided on both end,

[Michael W.]

Re: Driveshaft and Half Shaft Weights

Danny,

In all my years of judging I’m and observing bowtie/survivor cars, I have never seen a half shaft that had weights on it. Maybe the mid to latter C3 cars had them, but never seen them on mid year or early sharks. Ever.

The later c3s did not have balanced half shafts either.

[Ron G.]

Re: Driveshaft and Half Shaft Weights

Danny,

Thank you for the pictures. However, I hate to say never say never, but the halfshafts in the picture look like they are painted which means that they were probably out of the car at one time and it was not uncommon that while they were out to have them balanced. As our counterparts in this thread concurred with my opinion and opinion of others on this DB that are quite experienced. I will stick to what I believe how they were.

[Joe L.]

Re: Driveshaft and Half Shaft Weights

Ron, looking at some early stock Big block half Shafts , looks like some sore of weight weided on both end,

Danny------


For one thing, these are not big block half shafts. These are 1975-79 half shafts (later SERVICE for 1963-74), GM #360912. The last year for big blocks was 1974 so there's no way these could ever have been originally installed on a big block Corvette. For another thing, as Ron pointed out, they have been painted so they've been off the car and who knows what happened at that time.

[Joe L.]

Re: Driveshaft and Half Shaft Weights

Danny,

In all my years of judging I’m and observing bowtie/survivor cars, I have never seen a half shaft that had weights on it. Maybe the mid to latter C3 cars had them, but never seen them on mid year or early sharks. Ever.

Ron-----


I agree. No weights on Corvette half-shafts---big block, small block, or, if they had made any, medium blocks.

[Guest]

Re: Driveshaft and Half Shaft Weights

I figure i pass the photo along Joe, i guess it hard to say if shafts were balance from factory or not

[Richard G.]

Re: Driveshaft and Half Shaft Weights

Take a close look at the circumference of the weld. Is there a stop and start somewhere on the shaft besides at the location with the bump. It may just be where the welder stopped after making one revolution?
Rick

[Joe L.]

Re: Driveshaft and Half Shaft Weights

Take a close look at the circumference of the weld. Is there a stop and start somewhere on the shaft besides at the location with the bump. It may just be where the welder stopped after making one revolution?
Rick

Rick------


That's exactly what I think it is.

[Rick R.]

Re: Driveshaft and Half Shaft Weights

I've spent a ton of money with Zip the last few months, and so to their credit they went ahead and gave me the contact info for their driveshaft vendor. I had a conversation with an engineer there, and the gist of it is that they do have a process in place to balance the shafts without the need to "put ugly weights on them." (his words) To start with, they have fixtures that allow the yokes to be welded to the tubes VERY precisely. The shaft is then spun balanced and during that process, material is removed from it to bring it into balance. You can learn something new every day if you're willing.

[Richard G.]