I have 1000 lbs spring bars with my BXW1000 Blue Ox hitch system. I have 3 1/2 links showing from the spring bar to the rotary latch. I had it at 4 1/2 and pulled better with 3 1/2.
Not only is the correct tension needed for proper weight distribution but also for proper sway control as the bars need enough tension for them to do their job combating sway.
BTW, to get 3 1/2 links shown, that's 8 links from the end of the chain to the slot (above slot, not into the slot) in the rotary latch.
What I have now at 3 1/2 links.
4 1/2 links shown is 7 links from the end of the chain to the slot (above slot, not into the slot) in the rotary latch.
What I had previously at 4 1/2 links.
I have a 2016 Ford F150 Super Crew, 4WD, 145" WB and a Jayco Jay Flight 26BH (29' long) loaded around 6500 lbs.
Pic below in signature was with 4 1/2 links showing. Have readjusted to 3 1/2 links now as stated.
Blue Ox directions state to start at 3 1/2 links showing You need to jack up your tongue enough to get the tension off of the spring bars before engaging and before disengaging (
Direction Step 10A). That way you won't injure your hands. Also place your hands on the wrench in the correct areas and you won't hit your hands on anything.
I previously had a Reese Strait-Line (HP Dual Cam system) system with 1200 lbs spring bars on my 2012 F150. That truck had a softer suspension and the heavier bars worked well. The new 2016 F150's stiffer suspension didn't work with the 1200 lbs spring bars and couldn't get it adjusted without the cam bracket being rubbed by the spring bar. Since this system doesn't offer 1000 lbs. spring bars, I was forced to a different system. I chose the new generation Blue Ox Sway Pro and glad I did. This system is so much better than the Reese Strait-Line in every conceivable way.
2019 Ford F150 XLT Sport, CC, 4WD, 145" WB, 3.5L Ecoboost, 10 speed, 3.55 9.75" Locking Axle, Max Tow, 1831# Payload, 10700# Tow Rating, pulling a
2020 Rockwood Premier 2716g, with a 14' box.
Previous 2012 Jayco Jay Flight 26BH.