Today - 1973

The Allis-Chalmers 7030 and 7050 were introduced to dealers in Las Vegas, Nevada

This is a photo from their 1973’s AC sales literature for the 7030 & 7050.

Edited by AC7060IL - 22 Feb 2019 at 9:44am

This page discusses some of the 7000’s new features. I did not realize that an option 16 speed Power Director was available? Anyone know of or have a 16speed 7030 or 7050?

If I remember right my 7030 had a 5.2 mph in high on the power director that went to 4.2 in low. Then it had a 4.2 in high that went to 3.8 in low, duplicate speed but you had the shift down option, we used these two speeds a lot.

DrAllis wrote: Funny you should mention the 16 versus 20 speed trannys. If you look at the speed chart, these 20 speeds had so many duplications of MPH there were only about 15 actual speeds. Must be the Engineers calculator had a sticky key to come up with all the multiple 6.8 and 8.5 MPH selections, and then none of them were 6.0 to 6.2 MPH. The 7040-60-80 had that all corrected with 19 speeds out of 20 selections.

Interesting to know & appreciate AC’s engineering efforts to correct the early serie’s speed duplications. Thanks for sharing. Maybe it’s just the ordinary path of adjustments/improvement while proceeding thru a new investment endeavor(s)? I say that because AC had invested heavily into computer controlled machining that allowed better consistency in manufacturing their 7000 series components.
Yes, I also thought that a few of my 7060’s gear speed selections are similar in speeds. Although I’ve never operated a 7000 series with a loader, maybe there’s applications that merit faster reverse coupled with moderately slow forward speeds like what their high range offers.

I like the black fronts on the cabs. Darrel

I don't recall for sure, but I think my uncle attended that dealer meeting in Las Vegas.

That was a big jump for Allis! Always thought the 7000 series were sharp machines, wasn't many around my area, as I got out in the world more there was one that had Powershift trouble and all the Green guys always talked about that, not about the cams going out on the sacred green machines! Lol

Edited by DougG - 23 Feb 2019 at 12:00pm

I just happened to be there as an AC employee.

Tweaked the photos a bit.
It was so orange I thought it was Trump in the picture.