Speed didn't increase with downshift
My RV on 2010 Ford E350 V10 chassis has 30K miles. Every time I downshifted to 3rd to get the speed up on an incline, the rpm would shoot up but the speed hardly climbed with it. I would just take i...
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It is not enough to just downshift, you have to step on the gas. It is also possible to cruise on level ground as speedsthat you don't have enough power to maintain on a grade. You don't get full power until the throttle is floored at 4000-5000 RPM.
I've been able to accelerate on 5-6% grades, after being slowed by big trucks, but this would be in the 35-45 MPH range, and in 2nd gear, same gear as 3rd on the 5-speed.
It just depends on grade and speed. If grade and speed needs 400 hp for your weight, and you can get at most 250-300, under very specific speed and gear conditions, you are going to slow down to a speed that matches the power output. Your RV is not going to perform like a 200 hp, 4000 pound car on grades. To do that it would need close to 700 hp over a wide range of road speeds, and simply doesn't have it.
I've been able to accelerate on 5-6% grades, after being slowed by big trucks, but this would be in the 35-45 MPH range, and in 2nd gear, same gear as 3rd on the 5-speed.
It just depends on grade and speed. If grade and speed needs 400 hp for your weight, and you can get at most 250-300, under very specific speed and gear conditions, you are going to slow down to a speed that matches the power output. Your RV is not going to perform like a 200 hp, 4000 pound car on grades. To do that it would need close to 700 hp over a wide range of road speeds, and simply doesn't have it.
