What makes the Driveshaft Shop CV Driveshaft so different - Ford Mustang Forum
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post #1 of 4 (permalink) Old 11-20-2011 Thread Starter
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What makes the Driveshaft Shop CV Driveshaft so different

For the last 6 years we have been chasing an elusive thing, we have been trying to make a driveshaft for the new Mustang (S197) that is not only the strongest shaft out there, but also the most stable shaft when it comes to dealing with the harmonic vibrations that these cars are plagued with. In our opinion these cars were rushed to market with a harmonic vibration in the drive train. This is very obvious as the stock 2-piece 43lb anchor of a driveshaft that came installed in the car to help cure the problem. For those who are not aware, the rear of the factory shaft has a 9lb steel dampener inside of the tube helping to make it so tremendously heavy.

Over the last few years we have tried a few different types of shafts. First we tried a steel shaft and they had more of a harmonic vibration. We then moved onto the Explorer/Ranger style male and female aluminum slider shaft with decent results, but the success rate was not as high as we wanted. We then even went as far a making our own male/female slider that also allowed us to give you the stronger 1350 series u-joint on both ends with a supplied pinion yoke for the differential.Just to bring you into our world a little bit, we here at DSS go about things a little different than most Drive shaft companies. Most shaft companies buy the separate Shaft parts, they put them together and send them out the door. We are a full 22,000 sq. ft machine shop and manufacture a lot of the parts that we use, so when it comes to having trouble with a particular part we have not only the ability in house to review the problem, but also have the machines to make the parts needed to correct these problems.

So going back to the slider, we went ahead and produced a female slider and it was considerably better than the Ford Explorer/Ranger type, but we still had some cars that had a stability problem, so we went even further. During this time we had taken delivery of a new type of balancing machine (see machine below). This was a custom built machine that our owner Frank had specíd out with the companyís engineers, and were told the machine would take 3-4 months to make. Well, one and half years later we took delivery of the machine (3/2010) and a whole new world was opened up. Most are not aware that a balancing machine normally does not spin a shaft at the actual speed that the shaft will be spinning at, (click here for more about this) and to make a long story short, this new balancer has the ability to spin a shaft at any speed we went from 10RPM right up to 9500RPM (and everything in between). This balancer has enabled us to see the male/female slider type shaft become unstable at certain speeds and helped us to understand that we needed to take a different direction to make the shaft correctly.

What may come as a surprise to some is that we actually had the CV style driveshaft pictured in our 2009 Catalog, expecting the arrival of the new balancer. We wanted to wait to make sure that it was as stable as we had hoped by testing it in the new machine and that is why it was not used before now. Some time has passed and we were not only able to test the shaft in the new balancer, but we have given these shafts to a few chosen, well known shops for testing. The results are in, and every single car has been flawless. We were able to achieve exactly what we wanted, the best balanced shaft without the problems associated with the harmonics problems of a slider and strength without compare.
The Shaft will retain the factory 6-bolt CV mount, so we have eliminated the problems associated with changing out the pinion yoke, and we have supplied a plate to convert the stock rear CV flange to fit a modified version of a 108mm CV that will be able to move in and out with suspension movement. We didnít stop there though, the original spline going into the 108mm CV is still a small 28 spline, similar to a C4 transmission output, so we decided to make the stub section ourselves using a new 300M material that we have been getting out of Sweden. This material is the same used in our record setting axles on many 8 and 7 second drag/street cars. We are also using a special boot and grease combination to ensure longevity of the CV. This, along with the 3.5Ē 6061-T6 aluminum and 1350 front u-joint, makes this the strongest shaft available for the platform with no clearance issues.

The Driveshaft Shop proudly introduces the new Mustang 3.5Ē 1-Piece Aluminum CV Shafts

1.1350 front u-joint with flange to mount up to the transmission
2. Special 3.5Ē 6061-T6 aluminum rated for 3450ft lbs of torque, custom welded on our auto feed machines, will be available in Carbon Fiber in a very short time.
3. New version 300M Spline for the CV mount that is stronger than the rest of the shaft
4. Custom modified High Speed 108mm CV with special boot and grease.
5. Custom conversion plate (corrosion plated) to change from the stock Ford CV to our 108mm version
6. All Hardware included
7. 1 Year Warranty
8. 1000HP Rated
9. Balanced on one of the most sophisticated balancing machines in the industry.


If you have a old DSS shaft your not happy with please send me a PM for our exchange program.

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post #2 of 4 (permalink) Old 12-06-2011 Thread Starter
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Is anyone interested in our "old DSS shaft" trade in program ?

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post #3 of 4 (permalink) Old 12-10-2011 Thread Starter
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I just wanted to thank everyone for the orders that you have been placing, you made the right choice.
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post #4 of 4 (permalink) Old 02-23-2012 Thread Starter
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I was wondering if i could hear from a few guys that have installed there shaft and what they think about it.......
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