Mack U/DM

[grodudulle77]

Hello all , is somebody can tell me the differences between the Mack U model and the Mack DM model.  Thanks.

[Jim B]

From the outside, the cabs are the same, so they look similar.  However, the U-series is for highway use, where the DM is the severe duty model (think dump, concrete mixer, etc.).

This might help, too (1978 DM brochure): https://public.fotki.com/modeltrucks25thscale/truck_brochures/mack/mack-dm-1978/

No brochure for the U-series.

[grodudulle77]

21 minutes ago, Jim B said:

From the outside, the cabs are the same, so they look similar.  However, the U-series is for highway use, where the DM is the severe duty model (think dump, concrete mixer, etc.).

This might help, too (1978 DM brochure): https://public.fotki.com/modeltrucks25thscale/truck_brochures/mack/mack-dm-1978/

No brochure for the U-series.

Thanks a lot for your reply Jim , i guess the suspensions are different too . ??

[Jim B]

Most likely.

[DRIPTROIT 71]

9 hours ago, grodudulle77 said:

Hello all , is somebody can tell me the differences between the Mack U model and the Mack DM model.  Thanks.

The frame and suspension is heavy duty on DM. The U frame and suspension is more like the R-Model frame as far as kits are concerned. The DM kit has the older dash and flat back cab, whereas the R model kit has the newer dash and extended cab. The flat back cabs were an option on U Models up until the late 70s and possibly into the 80s. I built a U model a while back to represent an actual 1978 model truck that had a flat back cab. However, I cheated and used the Dm frame and just lowered the front suspension a bit to make it simpler. I did put the newer dash in it. Mi e was also single axle,so it had lighter rear suspension when finished. Once finished, most don’t notice the heavier frame. Maybe you could call mine a DUM.?

Edited May 25, 2021 by DRIPTROIT 71

[grodudulle77]

56 minutes ago, DRIPTROIT 71 said:

The frame and suspension is heavy duty on DM. The U frame and suspension is more like the R-Model frame as far as kits are concerned. The DM kit has the older dash and flat back cab, whereas the R model kit has the newer dash and extended cab. The flat back cabs were an option on U Models up until the late 70s and possibly into the 80s. I built a U model a while back to represent an actual 1978 model truck that had a flat back cab. However, I cheated and used the Dm frame and just lowered the front suspension a bit to make it simpler. I did put the newer dash in it. Mi e was also single axle,so it had lighter rear suspension when finished. Once finished, most don’t notice the heavier frame. Maybe you could call mine a DUM.?

Thanks for the details Brian, i remember yours, an Overnite Mack truck , if i’m not mistaken. I really like the look  . ?