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Where can I buy this kit?? :rolleyes:
 

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Any building site...………...
 

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That looks like #5 bar, so it might be enough. I'd want to see the engineer's stamp on the shop drawings, though.

Randall
 

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True, it only needs to meet minimum tensile strength.
Maybe if he'd built his subframe as a bar joist...
 

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Thumper. Yes, there is some medium strength steel in some special application rebar. Be careful looking at "strength" numbers. The 60 ksi you quoted is that for Ultimate or Yield strength?

The rebar the typical DIYer gets at the big box store is low strength and low grade material that is not very weldable. Sure, you can glob a weld bead on it to stick two pieces together. Although, the integrity of the weld is questionable.

Use whatever material you want to support your butt as your bike slams over road gaps, bumps, holes......

Just remember, the forces from the road transmitted through the bike are magnitudes larger than just your butt sittin' on the seat. Why do you think the springs are so strong? Springs are much stronger than just to support the riders butt.

A "cool" looking bike won't be so cool when the seat frame yields and lowers the rider to the rear tire. Although, it should be effective hemorrhoid removal at 30 mph or greater and a great hoorah for riding buddies.
 

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All this talk abut metallurgy is distracting from the more important point that the rebar makes you think about Ruffles potato chips.
 

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@Newt You probably don't know that Thumper is a structural engineer, so he probably knows a bit about rebar.
You also may not have noticed that this entire thread is a joke, and most of the posts it contains have been made with tongue firmly in cheek. 🤪

Randall
 
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