Why double drive shaft?
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Senior User
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Why double drive shaft?
Just curious as to why the 66 f100 has a double drive shaft, the total length is only 6', is that too long for a single? Can you put a single in? If so is there any advantage / disadvantage?
I'm just thinking with modern drive shafts, to have a single made up, it would eliminate the center bearing / u-joint.
I'm just thinking with modern drive shafts, to have a single made up, it would eliminate the center bearing / u-joint.
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Joined: Jun 2012
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From: 7th realm of hell, Va.
The longer the drive shaft the more likely it is to woble, or not spin true at higher RPM. Once that starts to happen they can bend and break, it is hard on the U-joints. I am sure you could use a newer Aluminum drive shaft if you really want a 1 piece drive shaft. I hae never seen anything in hard writing about the max lenght of a 1 piece drive shaft. I have seen Chevy trucks with extended cab and long bed with a 1 piece aluminum drive shaft
Matt
Matt
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From: 7th realm of hell, Va.
Here is a chart on the Dana website that lists their maximum length drive shaft for the different drive shaft diameters. For instance for a 4" diameter driveshaft has a recommended max length of 70" and a 5" diameter driveshaft has a recommended max length of 80"
http://www2.dana.com/pdf/DSAG-0200.pdf
See page 12 of the PDF for the chart
matt
http://www2.dana.com/pdf/DSAG-0200.pdf
See page 12 of the PDF for the chart
matt
Senior User
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Here is my experience with a 6' long aluminum shaft...
https://www.ford-trucks.com/forums/1...l#post13282889
https://www.ford-trucks.com/forums/1...l#post13283337
Not that there is anything wrong with them per se, but they can break.
https://www.ford-trucks.com/forums/1...l#post13282889
https://www.ford-trucks.com/forums/1...l#post13283337
Not that there is anything wrong with them per se, but they can break.
Posting Guru
Joined: Jan 2011
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Don't be afraid of Aluminum drive lines. Simply have one ""made that fits your application."" Check out the drive line business below. There might be one near you like this place. There is a bunch of information at this web link. Look around the web site.
http://www.driveshaftshop.com/
http://www.driveshaftshop.com/
Tuned
Joined: Sep 2014
Posts: 296
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From: Tyngsboro, MA
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Tuned
Joined: Feb 2005
Posts: 283
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From: Monroe NJ
I have a aluminum one on my 66 f100 long bed. It came off a newer Ford but I don't know what. It came as a package deal . I'm using a aluminum 4 speed trans with O/D that came off a 80s something f100. Tom
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