Very interesting.  Turning that long board on edge and cutting a small bird's mouth where it crosses the upright board would double the strength of the pry board (to eliminate the cracking sounds) and keep the upright from slipping loose and breaking your leg.

Pressure treated lumber (at least in this neck of the woods) is all garbage like cottonwood.  Very soft and weak.  Spend your money on fir and larch, and I'll bet that widget will work like a charm.

Thats the biggest Rube Golberg bead breaker I can imagine. Mine didnt want to let go, so, Naturally,

Pull the Shrader valve
block the whole thing off the ground with a 2X4 under the middle & whatever it takes to put on the sides to keep it stable, I dont tremember what I used.
Another 2X4, Long enough to deal with the pressure needed, mine was 8 feet long.
a short piece of 4X4, across the tire, just as close to the rim as possible & not catch on it.
The rope is only wrapped around & tied, so you can play with it & get the space between boards when it starts pressing hard on the tire. Its like a BIGGO nutcracker, with a 4X4 across the main "cracker" handle.

If it's so tuffa nut to crack, then, yea, stand the boards on edge, the lower one will require braces nailed to it to keep all the rasslin from knocking it over. If the rope isnt real stout, go around a few times. I started with not enough slack & had to re-do the rope, allowing the board ends to be further apart when the 4X4 was starting to press hard on the tire. No car should be needed, IMO.

justin_o_guy2 wrote on 09/12/08 at 22:32:06:

So yours was smaller?  

I went with a tire changer machine similar to the HF one, combined with a NoMar mount/demount bar. Breaking beads is simple with it; if one is careful there is no way you can scratch the rim, and actually getting the tires off of the rims is very easy.

The tricky part is mounting the new ones  Mind you, this is all for tubeless tires on my lil CBR, I've not had to use it yet on the S40's tires...

 Changed both tires on my KLR650 recently and used a "C"clamp to break the bead. Three tire irons,Windex and talcum powder too.

   jon

The old bumper jack method is what my dad (and I used to do) used to break a car tire from the rim. Back in the day when there were such things as bumper jacks. He also would just drive one of the front tires up onto the flat tire to pop the bead. I think tires, cars and brain cells were different back then in the mid-50's though.

I guess since he's no longer on this plane it's safe to tell that he has, when stranded in the middle of nowhere, broken down the tire, patched the tube, re-mounted tire and tube and then blew it up with old fashioned lung power. Dedication to getting the job done. Did I mention we were on the extreme low end of the monetary food chain when I was a wee lad? But things got done.

As I've always said:

"Where there's a will there's a greedy relative".

Jack