Thank you mike. I guess that I am not wording my question properly.
I was initially planning a 1500 pound capacity Torflex, but I think that my finished weight is going to be no more than 600-800 pounds, since it seems that my camping gear doesn't weight nearly as much as I thought.
The lady at Dexter was not helpful at all, in deference to what everyone else has said. I must have got her after something unpleasent or something. Anyway, she was generally evasive about making any recomendations, and basically replied to any wauestion about what to order with "That is for the designer of the axle to determine" or "we build axles to specifications specified by the designer". Absolutly no help in helpig me decide "how much" axle I need for a particular trailer weight.
How do I determine the capacity of the axle that I want? If the trailer estimate ends up being 600# without the axle, should I order a 900# capacity axle, and simularly if the trailer estimate without axle is 800# go with a 1200 pound axle?
I am building something like this:
http://expeditionportal.com/forum/showthread.php?t=5864