Lead walls included.... $10k

[milkmania]

Mobile Medical Clinic (Bus)

[mikeypj]

How much do they weigh..



*"The Road goes ever on and on
Down from the door where it began.
Now far ahead the Road has gone,
And I must follow, if I can.” *

[Brewerbob]

What's the scrap price for lead these days?

[dalez]

Holy crap that's in my neck of the woods...

No mention of mileage...

24kva genny?!

What kind of fuel economy would you think it gets with that engine?!

I just read those get about 5mpg, and have no turbo so are fairly gutless for such a large bus... yikes. My skoolie gets over 8mpg, and I feel like it could do better with overdrive... Maybe I should stick to a skoolie for my next build :P

[milkmania]

Originally Posted by dalez

Holy crap that's in my neck of the woods...

No mention of mileage...

24kva genny?!

What kind of fuel economy would you think it gets with that engine?!

I just read those get about 5mpg, and have no turbo so are fairly gutless for such a large bus... yikes. My skoolie gets over 8mpg, and I feel like it could do better with overdrive... Maybe I should stick to a skoolie for my next build :P

If you became a proctologist with that bus.....

You wouldn't need turbo, they'd come to you!

[Brad_SwiftFur]

Originally Posted by dalez

Holy crap that's in my neck of the woods...

No mention of mileage...

24kva genny?!

What kind of fuel economy would you think it gets with that engine?!

I just read those get about 5mpg, and have no turbo so are fairly gutless for such a large bus... yikes. My skoolie gets over 8mpg, and I feel like it could do better with overdrive... Maybe I should stick to a skoolie for my next build :P

I don't know about 'em being gutless ... they're supercharged engines and believe me, they'll cruise comfortably at 80+ Not sure about fuel economy, but I've read some of those coaches will achieve 7-8 MPG or better with that engine. Now in a big truck, sure, you'll get around 5 MPG, moving a lot more weight and wind resistance.

[dalez]

They're not exactly "supercharged", in that they dont build any positive pressure. That's a two stroke diesel, it needs an air blower just to breathe, but one with just the 'supercharger' is considered an NA because there's no boost pressure. If it can go 80+, it's because of displacement. And I'd expect a 4 stroke in that chassis to do 25% better on economy or more just due to the engine geometry, so what'd the 4 stroke MCI's get?

[PNW_Steve]

Originally Posted by dalez

They're not exactly "supercharged", in that they dont build any positive pressure. That's a two stroke diesel, it needs an air blower just to breathe, but one with just the 'supercharger' is considered an NA because there's no boost pressure. If it can go 80+, it's because of displacement. And I'd expect a 4 stroke in that chassis to do 25% better on economy or more just due to the engine geometry, so what'd the 4 stroke MCI's get?

I ran many miles in an Eagle 10 with an 8v71NA and Allison 740. I managed a very consistent 7.25mpg. I ran into a gent who had swapped a Cummins M11 and Allison into a near identical rig and we compared notes. He was getting 9.25-9.5mpg.

That would appear to back up your 25% number.

But..... You can never replace the wail of a 568 cu.in. two stroke at 2300rpm.... I think Delo 100 gets in your blood..

[Iceni John]

Every 2-stroke Detroit has a Roots-type scavenge blower. It simply won't run without it. It produces a few PSI of air that pressurizes the air boxes that surround each cylinder. A Detroit has no intake valves, so all the air needed for combustion is blown into the cylinders through the ports as the pistons are beginning their upward travel, at the same time as the exhaust vales are still open - this helps scavenge the old exhaust gasses out of the cylinders before the valves close and compression can begin. The ports are slightly angled to produce a swirl to the incoming air.

Some 2-strokes, like mine, also have a turbocharger to provide additional intake boost when driving, but the turbo obviously does not contribute any real air volume or pressure at idle. When the turbo is at full boost, in my bus about 26 PSI, it simply pushes the air through the blower even though the Roots lobes are still turning. Some blowers have a bypass valve to assist this process.

The military used turbo 8V71s, and they can produce up to 400 HP and about 1200 torque. The more usual non-turbo 8V71 was normally about 318 HP in trucks, but Greyhound's were less than 300 HP because of the difficulty of keeping them cool in their buses in hot weather.

Yes, you're right about the unforgettable sound of a Detroit at full welly - it's addictive to hear it! I love the sound of my engine. I think all 2-stroke diesels are just so interesting, and after all those years in my youth listening to Deltic locomotives on Britain's East Coast Main Line I've finally got my own 2-stroke. (Imagine a loco that has two engines, six cranksafts (two of which rotate the opposite direction than the others), 36 cyliders and 72 pistons, and not a single valve. That sound still makes my skin tingle when I hear recordings of them. Incredible!)

John

[Rameses]

Anybody want this one?

I should have the heads for it around here someplace.

[Iceni John]

Originally Posted by Rameses

Anybody want this one?

I should have the heads for it around here someplace.

What is (was?) it? A 12V71?
John

[Rameses]

Originally Posted by Iceni John

What is (was?) it? A 12V71?
John

Yep.

And an Allison CLBT 5860-4.

[dalez]

We can shoehorn that into a Crown right?

[Rameses]

Originally Posted by dalez

We can shoehorn that into a Crown right?

Hell yeah, just tweak your floorplan so that the living room is centered around the engine and use the engine hump as a coffee table!

You could even make the engine hump out of glass and polish up the twin scavengers on top of the engine.

[dalez]

I like it! I bet some chrome'd turbos would look good on'er too!!