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Old 10-08-2013, 11:22 PM   #11 (permalink)
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Well, you guys got me distracted with the WWI tank and the template (great points by the way), so I went ahead and did the template for both the WWI tank and an Abrams. RedDevil, I think the template is backwards on that tank, but thanks for the idea!

I would still like to see a CFD, though.





So which is better? I guess a CFD would prove one way or the other...

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Old 10-08-2013, 11:31 PM   #12 (permalink)
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I like the quote about the exhaust temp. I'm surprised they don't turbo it to use up some of that energy. It is a diesel, isn't it?
Gas Turbine, with many many filters for desert use.

Fuel thirsty, but highly reliable and low service per hour compared to a Diesel.
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Old 10-09-2013, 12:16 AM   #13 (permalink)
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@NachtRitter: Yeah, they need to get one of those headliner type antennaes! Too bad the belly pans from the factory are X amount tons!
The weight really only matters in the urban (combat) driving... on the open freeway (open desert?), they can just keep the cruise on (wonder how effective P&G would be... )
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Old 10-09-2013, 02:34 PM   #14 (permalink)
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^^
I suspect the glide on a 60+ ton vehicle could be epic, if it weren't for the amazing rolling resistance. I mean, c'mon: TREADS.

...and let's not forget the power pulse on one of these bad boys. If you're into engine-off coasting, don't forget to factor in the fact that the starting sequence on an Abrams' turbine engine isn't just twist-n-go, and that honkin' big automatic means you can't pop the clutch to roll it off, either.

Are Ecopia treads available? Or maybe we could talk to the good people at MaxxTrax about some low-resistance, highway-friendly tracks. They'd be a lot quieter, too, and you know that's a thing inside any tank.
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Old 10-09-2013, 03:03 PM   #15 (permalink)
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Originally Posted by jeff88 View Post
Well, you guys got me distracted with the WWI tank and the template (great points by the way), so I went ahead and did the template for both the WWI tank and an Abrams. RedDevil, I think the template is backwards on that tank, but thanks for the idea!
You're welcome
Yes, is was backwards, intentonally so because:
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I have to be the first to say it; I bet that it's a better Cd going backwards.
There is so much we could do to make it run more economically...
- narrower threads;
- taller gearing,
- leave the spare at home. There is road service everywhere these days;
- SG/UG!
- Adjust the nut behind the steering whateveritis,
- HHO to get 73% better FE. Yes! Sorry, couldn't resist

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