Best diesel pusher chassis ?

Are you are advocating for a solid steer axles vs. IFS because of fewer moving parts? I am old enough to remember solid front axles on the Dodge M-series chassis as well as the Rockwell front axle used on vintage Newells and I believe on older Prevosts.

On the bigger coaches of the mid-to-late 1970s (like a 1976 Executive) with the Dodge chassis, unless an aftermarket Positrol spring-loaded front suspension stabilizer was added, crossing railroad tracks often induced a front end shimmy that required stopping and starting again. The Rockwell axles axles required the bearing to be repacked on a scheduled basis. After Rockwell went to oiled front axle bearings, oil would seep out in hot weather at highway speeds, never enough to cause a mechanical issue but unsightly to be sure.

The IFS systems were much more maintenance free right from their introduction on motorhomes, they ride and steer better, and they allow for a greater steering cut angle for a shorter turning radius. The next steps include computer controlled active suspension, active tag axle steering, and Dana electric column drive steering. But as I recall, this thread started with the search for a great used coach, so that last good stuff may have to wait.

Ivylog wrote:
10+ years ago I looked at a F or maybe S bare chassis with IFS. I counted 16 additional pivots/moving parts over a solid axle... no thanks. I believe someone has put the steering gear box in the middle of the IFS reducing the count by 5. so only 11additional...still no thanks. The good news is most will never put enough miles to where the additional parts will need replacing.

On the bold part above, that kind of makes it a complete non-issue then, doesn't it? :w

10+ years ago I looked at a F or maybe S bare chassis with IFS. I counted 16 additional pivots/moving parts over a solid axle... no thanks. I believe someone has put the steering gear box in the middle of the IFS reducing the count by 5. so only 11additional...still no thanks. The good news is most will never put enough miles to where the additional parts will need replacing.

My vote goes for NEWELL :C

Good clarification. That said, the point I was trying to make and did not do very clearly is that I don't think 10 airbags is necessarily better than 8, sold front axles included.

“Only 8 airbags, not 10”. You inaccurately assume the OP is looking at newer DPs. He is not as he included Roadmaster and Dynomax in his question. Yes, “currently” the big three are no longer on 10 airbags after years of using 10...the difference is ZF does not use a solid front axle. I know were I’d try and put the 2 extra ones.

Ivylog wrote:
10 airbags...Prevost, Newell, Foretravel, Monaco Roadmaster which includes 2004+ Beaver, HR, Safari all on the RR10S for the handling and 9,000+ of CCC. The newest Monaco is NOT on a RR10S chassis.

At this time, there are only four three axle pusher chassis available in the motorhome market, Freightliner (owned by Daimler Benz), Spartan, Prevost, and Newell.

10 air bags? No currently available chassis uses 10. Nor I suggest is this relevant to the "best chassis" discussion.

ZF (Germany) manufactures the most advanced coach suspension systems in the world, and are used world-wide by top-tier coach builders. ZF suspensions are available to the motorhome manufacturers (optionally) with computer-controlled suspension, and active or passive tag axle steering. (Only one chassi/motorhome manufacturer includes either ZF computer controlled suspension and active tag axle steering--guess who).

But back to the number of air bags. ZF independent front suspension has two air bags, their highest capacity drive axle suspension has four air bags (mounted outboard ahead of and behind the drive axle), and their tag axle has two air bags. That is 8 air bags total.

For those wanting 10 air bags, where would the other two go?

Magnum chassis by SMC were on several late 90s early 2k Safaris, Beavers and some Harneys. CAT 3126, Allison 3000 series, exhaust brake. Built specifically for motor homes. The biggest issue was the rear radiator/CAC getting plugged up with road grime and oil. Just stay away from the torsilastic suspension.

X2 On what Dennis said.
My is Gillig and it's the best. lmao

I have also owned the worse a P30

navigator2346 wrote:
DynoMax

Anything special about the Dyno as opposed to the others ?