Thread: Need input on cage design

Hey guys here's my f-150 again. I need some input on reducing the amount of flex that my rear bedcage exhibits.
The flex doesn't seem to come from the tubular part of the cage so much (1 3/4" DOM) as it does from the Factory frame flexing from where it kicks up just underneath the back of the cab. And it's really not alot of flex, but I'd rather over-engineer than under-engineer.
In order to strengthen the stock frame I boxed in the section that kicks up, this seemed to help a little.
In addition, I'll be continuing the bedcage structure through the back wall of the cab and then down through the floorboard and attaching to the frame.
here's some pics that will hopefully help with the strategy.
Thanks, this site and all the people that post rock.

Here's how it attaches to the stock frame rails

here's where I plan to enter into the back of the cab and through the floor to attach to the stock frame rails

here's the boxed section of the stock frame rail, If i wasn't a freakin dummy I could post more than one image per reply.

you need to build a full cab cage and tie it into the rear. only way to keep the frame from flexing. you should have a full cage anyways with a linked truck.

here is a thought u rea;y need to do what matt said as anyone would say

you sould brace it from father forward on the frame to the back here is an example

in this pic the red dot is what im talking about you sould have the tubing for the bed cage start there and go to the back of the bed cage

and on this picture yiu souldnt have a bend that just makes a week spot for it to bend right there under hevy stress

OK the roll cage makes sense I'll tie it into the bedcage with the additional bracing I was kind of dreading building one for whatever reason.
I saw Gabe lara's Ranger and it didn't have a roll cage and so I thought maybe I could pull it off too. But then again his ranger still has the stock frame rails all the way back.

Thanks for the input

gabes ranger has a full cage front to rear.

In the January issue of off road it didn't, check the photos.

from what gabe has told me he bought the truck with a cage in it allready. i have been in the truck it has a cage. it just doesnt have down tubes that come out from the top of the cab to the bedcage.

So the roll cage doesn't connect to the bed cage at any point?

it connects under the window. even if it didnt it doesnt mean you shouldnt either.

I totally shouldn't,
allright wildboyz is on, later