Tow/Haul
I have had my 24ft class c for a little over a year now. It is on a Ford 350 chassis with the v-10 and have hardly used that feature. This weekend I was heading into a 25 to 30 mph wind and it was dow...
Forum Discussion
I used Tow Haul on my new-to-me 2012 Freelander on a 2008 chassis this weekend. The high revs, and noise, starting out were disconcerting at first, but as I watched the shift points it appears Tow Haul programs the tranny to shift at the top of the torque curve. Mine was shifting up at 3700-3800 rmp, which was the point of maximum torque in the 2000 V-10 I had in my class A. Haven't seen the torque curve for the 2008 V-10 but assume it is pretty similar.
Desert Captain, Tow Haul is far different than locking out overdrive. I found overdrive lockout to be useful for slowing approaching a stoplight, but really minimally effective in slowing my 25,500 pound class A and toad on downgrades of 6% or more (fortunately the F-53 chassis has great brakes). Haven't used the tow haul on a downgrade yet, but it is much more effective in slowing the Freelander on level roads.
Since you really drive torque, not horsepower, tow haul seems to provide a much better tranny programming for accelerating a heavy class C. I can rationalize the improved fuel economy that has been posted. I suspect that in addition to higher pressure shift points, it reduces slippage as you approach an upgrade. Should keep the tranny cooler also. I'll be checking both when I get my Scanguage installed.
Desert Captain, Tow Haul is far different than locking out overdrive. I found overdrive lockout to be useful for slowing approaching a stoplight, but really minimally effective in slowing my 25,500 pound class A and toad on downgrades of 6% or more (fortunately the F-53 chassis has great brakes). Haven't used the tow haul on a downgrade yet, but it is much more effective in slowing the Freelander on level roads.
Since you really drive torque, not horsepower, tow haul seems to provide a much better tranny programming for accelerating a heavy class C. I can rationalize the improved fuel economy that has been posted. I suspect that in addition to higher pressure shift points, it reduces slippage as you approach an upgrade. Should keep the tranny cooler also. I'll be checking both when I get my Scanguage installed.
