I was thinking about how to make a tool to tighten the crankshaft bolt...I did not want to go and buy one...and did not feel like taking out all the welding equiptment..so I came up with a tool that anyone can make. All I did was go to home depot and buy a one inch pipe floor flange, a one inch threaded pipe nipple (to fit in the flange), some 2 inch long metric bolts (to fit in the threaded holes in the crank pulley) and some washers.
I took the pipe flange and put the threaded nipple in it with some gorilla glue on the threads (so that the nipple cannot come out)...once the glue was dry...it was ready. I attached the pipe flange to the crank pulley using the bolts with the washers on the head of the bolts...I made sure that the nipple was facing out. Then I attached a pipe wrench to the pipe nipple and rested it against either the front wheel strut or the ground. Then I took a 19mm socket on a breaker bar...put the socket inside the threaded nipple and used it to tighten the crankshaft nut. The pipewrench keeps the flange from moving when you tighten the crank nut. Here is a pic of what I came up with.
If you need further pics or info...feel free to contact me...it works great and no welding involved...no expensive tools...the whole thing cost maybe three dollars...I assume that everyone has a pipe wrench and socket set.