71 Roadrunner Driveshaft noise

Rod Romain II · May 12, 2021

I have a driveshaft off one of my 71 Roadrunner projects and if you flip it end for end there is something inside sliding. Did they have an NVH damper inside the tube back then? It's from a 383/727

s/w theo · May 13, 2021

Sounds strange to me. Maybe a piece of weld slag from installing the yokes at the factory, or someone might have thrown something in there before it was welded up on the assembly line. I heard stories of people doing stuff like this on the factory floor.

440+6 · May 13, 2021

Yes many drive shafts did have internal vibration dampeners, basically a rubber type donut with a piece of smaller diameter pipe in the middle of it Pressed into the shaft.

Rod Romain II · May 13, 2021

s/w theo said:
Sounds strange to me. Maybe a piece of weld slag from installing the yokes at the factory, or someone might have thrown something in there before it was welded up on the assembly line. I heard stories of people doing stuff like this on the factory floor.

I've heard of beer cans in props before but whatever is in this one has some weight to it.

Rod Romain II · May 13, 2021

440+6 said:
Yes many drive shafts did have internal vibration dampeners, basically a rubber type donut with a piece of smaller diameter pipe in the middle of it Pressed into the shaft.

I just don't know if a prop from 71 had that or not.

71 Roadrunner Driveshaft noise

Rod Romain II

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s/w theo

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440+6

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Rod Romain II

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Rod Romain II

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