Difference between Mack DM and Mack U models

[burnstransport]

OK, so I've been looking through the different pics online and I'm wondering what really is the difference between a U model and a DM model. I'm sure it's a pretty simple explanation but i can't figure out what exactly they are, after seeing enough pics the differences are pretty slim. I've seen lots of DM models with a sheet metal cab but also lots of DM models with the fiberglass nose like the U models have so I'm really lost what the difference is, just wondering. Thanks in advance for the explanation.

[umodelnut]

OK, so I've been looking through the different pics online and I'm wondering what really is the difference between a U model and a DM model. I'm sure it's a pretty simple explanation but i can't figure out what exactly they are, after seeing enough pics the differences are pretty slim. I've seen lots of DM models with a sheet metal cab but also lots of DM models with the fiberglass nose like the U models have so I'm really lost what the difference is, just wondering. Thanks in advance for the explanation.

DMs had a heavyer frame, axles ETC. The DM stands for Dumper Mixer Chassis. U models had lighter frames, axles ETC. U models were mostly road trucks, and lighter duty dumps, if they were used as a dumper chassis.

[burnstransport]

OK that makes sense, thanks Vinny!

[umodelnut]

OK that makes sense, thanks Vinny!

Anytime. Im the umodelnut, so I know lots about U models.

[41chevy]

DMs had a heavyer frame, axles ETC. The DM stands for Dumper Mixer Chassis. U models had lighter frames, axles ETC. U models were mostly road trucks, and lighter duty dumps, if they were used as a dumper chassis.

Hey!! I looked all overmy DM800 and can't find the ETC. :whistling:

[hatcity]

Hey!! I looked all overmy DM800 and can't find the ETC. :whistling:

Thats an early model, still mechanical engine.

The later ones had computers in them

[Vladislav]

Vinny,

When I asked you the same question you also didn't say me about the light ETC and the heavy ETC

[umodelnut]

Vinny,

When I asked you the same question you also didn't say me about the light ETC and the heavy ETC

Im sorry

[mowerman]

no differance thier all crooked,,,and tip over easy.hahahahahahahahahahahahahahaha...bob

[JumperAndSon]

DMs had a heavyer frame, axles ETC. The DM stands for Dumper Mixer Chassis. U models had lighter frames, axles ETC. U models were mostly road trucks, and lighter duty dumps, if they were used as a dumper chassis.

Right, DM's are the rugged, heavy duty, get-r-done offset trucks. U models are the lightweight, flimsy, sissy-lala offset trucks.

Ben

[1958 F.W.D.]

U models need a minimum of three fat chicks on the porch, a DM you only need a minimum of one.

[41chevy]

Vinny,

When I asked you the same question you also didn't say me about the light ETC and the heavy ETC

MACK told me the ETC is Electric Turnover Control...U has a light lift motor and my DM has a heavy gear reduction motor to aid in putting the trucks back on all it's wheels. The later ones are self righting

[burnstransport]

U models need a minimum of three fat chicks on the porch, a DM you only need a minimum of one.

Thank heavens I'm driving a DM model, would hate to get rolled over with a U and explain to the troopers what two fat chicks were doing with a short slim guy like me :D

How new does mine need to be to have the self-righting option?????????

Edited June 30, 2012 by burnstransport

[41chevy]

Thank heavens I'm driving a DM model, would hate to get rolled over with a U and explain to the troopers what two fat chicks were doing with a short slim guy like me :D

How new does mine need to be to have the self-righting option?????????

Well , mines a 1969 I guess about 10 years newer..

[jeffbyrne]

Hi,

The difference between a DM and a U? I would say, simply, that a DM is a DM, and a U is an R with an offset cab.

[Frmconcrete09]

The dm's we have are pretty much tanks ..... And no fat girls allowed .... Find ya some fat girls vinnster

[umodelnut]

Wow, a serious question was asked. And look what happens every time U model comes up.

[mowerman]

The dm's we have are pretty much tanks ..... And no fat girls allowed .... Find ya some fat girls vinnster

hehe,,,thier generally not made for beauty,,,just ready to work...and yes no fat chicks hahahahahahahahahahahahaha.bob

[JumperAndSon]

Wow, a serious question was asked. And look what happens every time U model comes up.

Welcome to life, Cousin.

Ben

[Frmconcrete09]

Wow, a serious question was asked. And look what happens every time U model comes up.

It's all in good fun , don't you worry

[burnstransport]

Yeah I'm getting a kick out of it for sure! They sure aren't built for beauty or for speed but I gotta admit I'm starting to get attached to this old tank of a truck

[jeffbyrne]

I gave a serious answer!

A simple explanation.

[JTFormula]

Darkness hides ugly but it doesn't hide fat.

[Rob]

The ETC, (Electric Turnover Control) option was manufactured and vendored to Mack by the Uranus Corporation for a time being. Discounting maintenance, a fat chick was much easier to acquire, and replace when they no longer performed within design parameters.

Both systems performed admirably keeping lopsided trucks with the rubber side down.

To this day remember: Do not let a fat chick into the cab of a lopsided truck on the left!! Although they may offer a soft and cushy "squish zone" to minimize sheet metal damage, this is still to be considered a nuisance and easy to prevent by requiring entrance through the right door only.

Rob

[Vladislav]

A right side door of the offset cab opens probably not so enough for a fat chick.

So I'm for being free from them !