One Piece Driveshaft

[TJC]

Well it's steel vs aluminum. The woods ds is a nice piece but won't work for me. My ranger is a pavement pounder and I'm on the hwy majority of the time. According to his calculator I would be coming close to the max critical speed.

Before you buy any driveshaft for vibrations one should make sure it's the driveshaft causing the vibrations.

The same calculation used on your 2 piece drive shaft is about ~30% worse (I'm being generous here) than his (max speed). Don't take my word for it. Go to the Dana/Spicer web page and enter the two driveshafts specs. The Ford OEM 2 piece is dramatically inferior.

If you are so inclined you can search this forum to find my entry where I specify the Dana / Spicer components used to build both parts. I actually erred intentionally in Ford's favor on a couple of them.

The Tom Wood's driveshaft exceeds the Ford part in every way. Again, don't take my word for it. Do the calculations yourself. Tom Woods has the details on the parts he uses and will share them with you. And he also knows the parts used in the Ford's two piece drive shaft.

I didn't take his word for it, I researched it myself.

He's honest to a fault about his product, and about Ford's. He knows exactly the facts that I am stating, but he is a small business and can't afford to be wrong. He is VERY conservative well below the Dana / Spicer limits. He never bad mouths the competition or OEMs. That is simply who he is.

My truck has never run smoother, even at 100mph. And I never go that fast, but I did to test it. It was smooth as silk going up and coming down. My Ford driveshaft had the shakes below 25mph, and severe shakes above 70-75. Life threatening, lose control scary shakes, until speeds dropped to 60. It only happened once and I refused to let it happen again. I-95 heading north from SC.

I believe it to be a resonate frequency instance, once it started, it progressively reinforced itself.

I did not trust the truck above 60mph after that, and found Tom Woods. All better now.

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[21rangerCactus]

The same calculation used on your 2 piece drive shaft is about ~30% worse (I'm being generous here) than his (max speed). Don't take my word for it. Go to the Dana/Spicer web page and enter the two driveshafts specs. The Ford OEM 2 piece is dramatically inferior.

If you are so inclined you can search this forum to find my entry where I specify the Dana / Spicer components used to build both parts. I actually erred intentionally in Ford's favor on a couple of them.

The Tom Wood's driveshaft exceeds the Ford part in every way. Again, don't take my word for it. Do the calculations yourself. Tom Woods has the details on the parts he uses and will share them with you. And he also knows the parts used in the Ford's two piece drive shaft.

I didn't take his word for it, I researched it myself.

He's honest to a fault about his product, and about Ford's. He knows exactly the facts that I am stating, but he is a small business and can't afford to be wrong. He is VERY conservative well below the Dana / Spicer limits. He never bad mouths the competition or OEMs. That is simply who he is.

My truck has never run smoother, even at 100mph. And I never go that fast, but I did to test it. It was smooth as silk going up and coming down. My Ford driveshaft had the shakes below 25mph, and severe shakes above 70-75. Life threatening, lose control scary shakes, until speeds dropped to 60. It only happened once and I refused to let it happen again. I-95 heading north from SC.

I believe it to be a resonate frequency instance, once it started, it progressively reinforced itself.

I did not trust the truck above 60mph after that, and found Tom Woods. All better now.

I'll look into it more. I just didn't want to pay money for a product that won't suit my driving needs, according to the builder. The aluminum shaft is a good bit more then I'm wanting to pay

At the moment, doing 80/90mph I have no felt vibration.

 

[TJC]

I'll look into it more. I just didn't want to pay money for a product that won't suit my driving needs, according to the builder. The aluminum shaft is a good bit more then I'm wanting to pay

At the moment, doing 80/90mph I have no felt vibration.

Here's a list of posts on the one piece drive shaft -including the referenced Spicer calculator results.

Interesting reading from late 2022. The really interesting reading begins at the highlighted link down to the bottom.

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-480108

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-480123

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-487982

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-470049

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-470049

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-490513

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-493327

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-493434

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-493484

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-493498

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-493524

https://www.ranger5g.com/forum/threads/one-piece-driveshaft.21381/post-493541

 

[Jason B]

I'll look into it more. I just didn't want to pay money for a product that won't suit my driving needs, according to the builder. The aluminum shaft is a good bit more then I'm wanting to pay

At the moment, doing 80/90mph I have no felt vibration.

When I had my 21, vibration always seemed to be between 65-70. Anything above or below was smooth.

 

[TJC]

You know how a truck with front end loose from wear (tie rods, etc.) behaves when you accelerate, and the front end begins to shake violently... almost out of control as the wheels start to jump in different directions until you slow down. It is down right scary as the truck jumps out of control.

This is exactly what I felt at 75mph on I-95! The entire truck was violently shaking/bucking! I came off the throttle, too afraid to apply the brakes... it subsided by 60mph, but for 30 seconds I felt like I didn't have control.... and I-95 typically has very heavy fast moving traffic. I didn't drive above 60mph until I replaced the driveshaft.

Smooth as silk since.

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