I had way too much work to do this weekend, so I couldn't make it to Billy's AZ meet where I was hoping to demo the SFIFS. I took it out on the patio today though and got a few pictures of it in action.
I drove it up on this rock that I had tried to climb before. Without the SFIFS, the VX got way too tippy so I never made it up. The rock measured exactly 25" tall.
You can definitely see the front passenger-side tire extending down to keep in contact with the ground.
My rear passenger-side tire just barely came up off the ground. Without the SFIFS, it was coming up a lot higher, and I never even got to the top of the rock!
Here's a picture of the cross bar shifted as a result of the flex. It shifted about 1.5 inches to the driver's side.