Unusual Detroit 6046 6-71

[tankbarrell]

Originally Posted by rob love

I was always under the belief that the twin detroits in the Shermans were counter rotating.

You're not alone, some refuse to believe they don't even when you show how they couple together!

[anthony urek]

Nope....both spin left in Grants.
Can anyone verify this once and for all.

[roy206]

the gm 6046 fitted in sherman and also m10 tank destroyer turns seen from front counterclockwise and the outcoming propshaft from the gearbox turns clockwise. your twinset is a runner right now?
see our complet restored twinset running

http://www.youtube.com/watch?v=adEy5j4XiJk

[Perry Kitson]

twin diesel set up was clockwise from flywheel end(manual states rotational directions should be veiwed from fan end, hence counterclockwise rotation in manual), camshafts were counter rotating, left hand engine counterclockwise from flywheel end, right hand engine clockwise from flywheel end.
Hope this is not too confusing.

Perry

[anthony urek]

Great video Roy!Beautiful motors! I jumped when you gave her a rev. It looks like both your motors are spinning anticlockwise from the front, is this correct?


But Perry, in your Sexton, you are saying your twins run opposite

[Perry Kitson]

Both engines crankshafts turn counterclockwise when standing in front looking at the fans. I think I only muddied the waters adding the talk about what the manuals say. Detroit Diesel always refers to rotation direction when looking at the engine from the flywheel end. The military refers to rotation direction from the fan end in the manuals. So the twin set up has both crankshafts turning the same direction, counterclockwise when observing from the fan end of the motors. The camshafts turn opposite direction because you are feeding the engines from opposing sides.
My Sexton uses the 9 cyl. radial.

Perry

[anthony urek]

Thankyou Perry for clarifying that.
Yes both engine cranks in the 6046 twin pack spin in the same direction.

Now back to my engine which spins the opposite way to the normal 6046 twins. Valentine maybe????