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[quote=goodsailing][quote]Check this site out, pretty cool tool to compare the stiffness of different tubes.

http://metalgeek.com/static/deflection.php[/quote]

That is cool.

I took a 3 ft section of 1" 4130 and put it between 2 bricks and held 50lbs (250lbs total) while standing on it. Didn't budge. Still not sure it would hold boat.
Here's the dilemma. If I go steel rims, aluminum 1" hubs and nanco tires and it doesn't work I'm out $300. The wheels probably wouldn't be worth anything to anyone else so I'd be out $300. If I bought the lawn mower wheels and tires 20 x 10 x 8 and it didn't work, I probably could sell the wheels and tires.. so I'd be out perhaps $200... there seems to be much discussion about lawn mower wheels not working, yet no one has mention the size of the tire on the lawn mower wheel that didn't work. I saw J. Deer tires in Lowes yesterday sporting 21 11's  Buying the cattrax, I'd be out $250, provided I could sell them down the road for half of what I paid. Decisions, decisions, not knowing exactly the type of sand I might be facing as I intend to travel up and down the East coast launching my boat.[/quote]

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