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Old 07-13-2018, 01:08 PM   #15
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I think the biggest difference is the air bags - especially compared to my first MH, a 36 foot gasser.

My 2003 DP at just over 41 feet had IFS and so did my previous MH (38 feet DP)and I thought they rode great.
My current rig at 43 feet (10 airbags and shocks) has a solid front axle and I really can't tell much difference. I always say its like riding on a rocking chair, smooth and very little jarring, no matter which DP I drove.

Not much help as I didn't see much difference.

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Old 07-13-2018, 01:52 PM   #16
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The problem I see comparing is not all IFS or straight axles are the same. Different manufacturers have different set ups like air bags.
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Old 07-14-2018, 09:02 AM   #17
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My Cadillac has IFS and IRS (front and rear independent suspension). My Dutch Star motorhome and my GMC Envoy (toad) have IFS. I've studied chassis dynamics. I'm convinced that IFS is better than straight axle (I believe in the science of it). Also, I believe that the total design of the air suspension in my big motorhome works really well. The explanation is complicated. Additionally, having the feature of the big side radiator with large hydraulic fan is great. Best of all, the long wheelbase and short rear overhang is something I could not do without.
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Old 07-15-2018, 09:16 AM   #18
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Check the Spartan Chassis. They are all ifs. What a difference in ride and handling. We went from a40 foot Winnebago with solid axle to the 42 Entegra 42 DEQ. WOW. What a ride and handling difference. We were out west and the wind blew us all over the place. Actually had to turn the wheel almost 1/2 turn each way to stay against the wind. This new Chassis is unbelievable. Spartan also has a great week long school that teaches you everything you need to know. Freightliner also has a good school but nothing like the Spartan school. Make sure to drive them both. Retail price means nothing. It's the bottom line that is the real number. Many discount over 100,000 dollars on a new coach. Check with the dealer I used. Total Value Rv in Elkhart IN
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