Forum Discussion
carringb
Mar 21, 2021Explorer
Gjac wrote:carringb wrote:I wonder why Ford can make a longer WB for the 3.5 eco boost engine and not the 450 or 350?
One more... Leisure Travel Wonder all is on the 178" wheelbase:
https://leisurevans.com/wonder/
As I mentioned above, the 176" wheelbase is an option on the E-series. It's up to the RV makers to use it. I've long suspected they tend to avoid longer wheelbases in order to keep the step-up only at the back bedroom. The Transit has flat frame rails so it doesn't need a step up, only wheel-well boxes. The E-series frame kicks up over the rear axle. I think it's a combination of larger frame-rails, more travel, and a larger axle tube that requires that kick-up. Pickup-based chassis have the kick-up in the frame at the back of the cab, but that makes the whole coach floor higher, and make a poor transition into the cab.
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