I have a SwayPro towing our 1998 25ft Airstream and after trading my GMC Sierra for a Ford F150 2x4 I've had nothing but problems towing. The trailer sways violently at times and always when a truck is passing, regardless of the direction.
The SwayPro towed OK with the GMC Sierra using the standard hitch bar that came with the SwayPro hitch but it did sway at times and I thought this was normal. To set up the F-150 I had to order an extended hitch bar from Blue Ox because I couldn't open the Ford's tailgate with the standard bar.
Currently I have been using 750# spring bars and these are the Cat Scale weights for the current setup with the truck and trailer loaded for a 2 week trip. I do carry about 20 gallons of fresh water because we sometime stay overnight in a WalMart parking lot.
Truck:
Steer Axle: 2680 lb
Drive Axle: 2100 lb
Gross Weight: 4780 lb
Truck + Trailer:
Steer Axle: 2640 lb
Drive Axle: 2880 lb
Gross Weight: 10780 lb
From this you can determine:
Loaded trailer weight = 10780-4780= 6000lb
Actual Tongue Weight = (2640+2880)-4780= 740 lb
Dry hitch weight per Airstream: 680 lb
GVWR: 6300 lb
Blue Ox says the tongue weight should be 10%-15% of the GVWR so in my case this would be 630 lb to 945 lb so my weight of 740 lb is right where it should be.
Thinking the problem may have been the weak springs on the Ford F-150, my son and I installed a Air Lift air bag suspension system (with compressor) on the truck and that really improved the ride quality but hasn't stopped the trailer sway.
I had several phone conversations with Blue Ox last week and after a lot of discussions they suggested that I get a set of 1,000 lb spring bars because of the actual tongue weight on my setup being 740 lbs. I had ordered the kit from RVWholesalers.com and they refused to make an exchange because I had ordered the kit over a year ago. I felt that that shouldn't be an issue because
THEY recommended the 750 lb spring bars. Anyway, Blue Ox said they would send me a set of bars because, in their opinion, I had been sold the wrong product. I don't know if any of you have talked to Blue Ox tech support but they are
GREAT. Not just because of this issue but I had spoken to them when I first bought the SwayPro and was setting it up on the GMC and they were
VERY helpful.
FedEx dropped off the new bars this morning and my son and I will be heading back to the local CAT Scale on Friday to set up the system using the new bars. I'll post the results Friday or Saturday.
One other thing - The Ford F-150 has a built in sway control system that
MUST be turned off if your hitch setup has sway control built in. Otherwise they will "fight" one another.
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