anyone know anything about oshkosh p-4 tankers?

1664 Views 22 Replies 13 Participants Last post by GEARSINMYHEAD, Feb 13, 2003

sceep

Discussion Starter · Feb 12, 2003

like this one??

thinkin o makin a tow rig

See less See more

1 - 20 of 23 Posts

road1will

· #2 · Feb 12, 2003

my dad worked for oshkosh truck in the 70s.

but from all accounts, it wont go fast, will handle like a OIL tanker, and accelerate about as fast as your grandma in her 2 foot power walker.

they are awesome trucks (the best, IMO) for the intended purpose, but wont do crap as a tow rig.

GEARSINMYHEAD

· #3 · Feb 12, 2003 (Edited)

sceep said:
like this one??

thinkin o makin a tow rig

I used to work on 4x4 4wheel steer Idaho Norland Snowblowers! Does that count? Incredible Hydraulics Systems on those things. Many Many Many a filter to change when servicing them. I believe 20 to be exact.

I seen a couple OLD SKOOL OSH KOSH's at this site. $9500 for the cheapest and you might be able to sell the Blower Box for some project cash. Heck maybe they'd sell it without it. I believe they are already 4x4 to boot.

http://www.esi-sales.com/snow.htm

BillaVista

· #4 · Feb 12, 2003

I was just reading in a January edition of Janes that the Brit army I think selected new Oshkosh tankers for aquisition.

road1will

· #5 · Feb 13, 2003

BillaVista said:
I was just reading in a January edition of Janes that the Brit army I think selected new Oshkosh tankers for aquisition.

yeah, but thats tanker versions of these-

a high tech, highly mobile vehicle designed for todays and tomorrows world, not 30 years agos world.

btw, i have stood next to some of the above MTVRs and they are extremely impressive. for an idea of scale, those are 52s.

See less See more

TR

· #6 · Feb 13, 2003

OMG they have gone to IFS!!!! :flipoff2:

ChrisPy

· #7 · Feb 13, 2003

nothing good ever came wiht square headlights.

road1will

· #8 · Feb 13, 2003

TR said:
OMG they have gone to IFS!!!! :flipoff2:

IRS too

but it still flexes!

road1will

· #9 · Feb 13, 2003

ChrisPy said:
nothing good ever came wiht square headlights.

i hope youre kidding.

how does a 450hp 1550lbft 12L Inline 6 CATERPILLAR diesel, a 7spd Allison automatic tranny with 7.5:1 first gear, air lockers in all 3 diffs, CTIS, 52" tires, 18" of wheel travel on each side, and a fording depth of 5 feet without preparations sound?

CJ Lagos

· #10 · Feb 13, 2003

oshkosh p-gosh?

GEARSINMYHEAD

· #11 · Feb 13, 2003

CJ Lagos said:
oshkosh p-gosh?

HaHa That's Great.

AZFord4x4

· #12 · Feb 13, 2003

9V said:
how does a 450hp 1550lbft 12L Inline 6 CATERPILLAR diesel, a 7spd Allison automatic tranny with 7.5:1 first gear, air lockers in all 3 diffs, CTIS, 52" tires, 18" of wheel travel on each side, and a fording depth of 5 feet without preparations sound?

Really fawkin expensive :flipoff2: :flipoff2:

Honstly, in sceeps defense, he already has this truck, so there's really no initial investment. I don't know how crazy of an idea it is yet, need to dig around that truck for a while & look at stuff.

According to what we've dug up so far, it has a top speed of 60mph (speed governed so that should be overrideable & it's faster than his current tow rig anyway) Has a 425hp Cat in it w/a 6 speed Allison. I'd assume once you lose 20k lbs off of it that it would normally carry, it'll probalby be pretty quick. I'm still brainstorming on ideas to work around the rear engine design for him. Otherwise, I think it'd be bad ass.

ChrisPy

· #13 · Feb 13, 2003

"how does a 450hp 1550lbft 12L Inline 6 CATERPILLAR diesel, a 7spd Allison automatic tranny with 7.5:1 first gear, air lockers in all 3 diffs, CTIS, 52" tires, 18" of wheel travel on each side, and a fording depth of 5 feet without preparations sound? "

perfect. if i ever need to move a house in a flood while clearing parked fiats.

however, with a a curb weight of 30,000#, that 450hp 1550lbft translates into approximately 66# per horsepower, and approximately 19# per torque.

put that in perspective, a Ford PSD weighing in at 8k# has 325 horse, 560 ft# torque, OR
24#/hp and
14#/torque,
an increase of over 275% power to weight, and 135% torque/weight. AND will seat 4 comfortably, AND fit in my garage, and doesnt require a CDL to drive.

also, the OSHKOSH has a max speed of 65 mph (105 km/h) and a Cruising Range of 336 miles. the PSD will do 100(governed) or more (chip), and has a range of well over 450 miles.

im not even gonna talk about the "low" range xfer case of 1.27:1.

hell, even a new TJ, weighing in at 3235#, wiht 190-hp and 235 lb/ft of torque, has a weight/ hp ratio of
17# per hp, and
13.75#/torque,

better even than the PSD.

it has 18" of wheel travel, but with 52" tires, and a wheelbase over 180", the travel is roughly 10% of the wheelbase and 30% of the tire size. not overly impressive. TJ's have much better numbers, percentage wise.

dont forget that 85' turning circle. the TJ, with half the wheelbase, can do it in a third the space. once again, not impressive.

See less See more

thecarman

· #14 · Feb 13, 2003

ChrisPy said:
however, with a a curb weight of 30,000#, that 450hp 1550lbft translates into approximately 66# per horsepower, and approximately 19# per torque.

put that in perspective, a Ford PSD weighing in at 8k# has 325 horse, 560 ft# torque, OR
24#/hp and
14#/torque,
an increase of over 275% power to weight, and 135% torque/weight. AND will seat 4 comfortably, AND fit in my garage, and doesnt require a CDL to drive.

hell, even a new TJ, weighing in at 3235#, wiht 190-hp and 235 lb/ft of torque, has a weight/ hp ratio of
17# per hp, and
13.75#/torque,

better even than the PSD.

So you'd rather have a TJ than a Ford PSD for a tow rig? :flipoff2: Since the TJ has similar weight/power ratios to the PSD, it could be a tow rig too? Of course I'm being sarcastic.

Sceep is talking about using this thing as a tow rig, so why bring a TJ into the discussion?

Add a 10,000 pound trailer to the equation. The TJ isn't rated to tow anywhere near that much, but assume it could. And now re-work your weight/power ratios with the added weight.

18,000# PSD plus trailer:
55# per hp, and
32#/torque

13,235# TJ plus trailer:
70# per hp, and
56#/torque

see what happens when you tow?

See less See more

ChrisPy

· #15 · Feb 13, 2003

"Add a 10,000 pound trailer to the equation. The TJ isn't rated to tow anywhere near that much, but assume it could. And now re-work your weight/power ratios with the added weight.

18,000# PSD plus trailer:
55# per hp, and
32#/torque

13,235# TJ plus trailer:
70# per hp, and
56#/torque

see what happens when you tow? "

hehe

add in the 10,000# trailer, and that osh "costs more than a towboat to operate"kosh moves to 88#/hp, and 26#/torque... AND is to heavy for many bridges in rural america.

yea, if you happen to be a small banana republic, a fire department, or perhaps a military superpower, this is the truck for you. but if your looking for a big tow vehicle, check out the offerings from kenworth, freightliner, and ford.

See less See more

MikeW

· #16 · Feb 13, 2003

A M35 would be cool to have.

randii

· #17 · Feb 13, 2003

According to what we've dug up so far, it has a top speed of 60mph (speed governed so that should be overrideable & it's faster than his current tow rig anyway) Has a 425hp Cat in it w/a 6 speed Allison. I'd assume once you lose 20k lbs off of it that it would normally carry, it'll probalby be pretty quick.
If not, you've got plenty of room to sneak in an auxiliary tranny.

Cool tow rig -- creative!

Randii

AZFord4x4

· #18 · Feb 13, 2003

randii said:
If not, you've got plenty of room to sneak in an auxiliary tranny.
Randii

hard to say that until he can get to looking at it better, between being rear engine, & 6 wheel drive, who knows what kinda tranny/t-case/driveline mess is under that thing.

pcorssmit

· #19 · Feb 13, 2003

ChrisPy said:
but if your looking for a big tow vehicle, check out the offerings from kenworth, freightliner, and ford.

When I was at the Chevy Dealer yesterday, they had a brand new 4500 pickup that they said was factory. The bed looked sweet, but it had the horrible looking new medium duty front end on it. Not sure on the drivetrain, it said Duramax on the side, but not sure if it was the little one or the big one.

Pete

sceep

Discussion Starter · #20 · Feb 13, 2003

i guess a little bit more background on this thing, and maybee in the tow rig forum, would have gone ove a bit better.

I have the chance to get this rig for free. Its not driveable at the moment, but it did run when it was parked. Our current tow rig only seats 2 and is redlined at 57 mph.

We were throwing around the idea of making this into a new tow rig. Use a set of boggies when we need to tow a trailer.

Free platform with good maitenece records + ultimate tow rig 6x6 cool factor - downsides still = SUPER FAWKIN COOL!

drag it home sometime soon and brainstorm it a bit more..............

1 - 20 of 23 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.