Re: h beam or i beam
 

ok, what do top fuel race car's use. I-beam.

http://www.bmeltd.com/rods.htm

and I quote " connecting rods are usually made of forged or cast steel formed in an I-beam shape for strength"

from my text book, automotive service, third edition. and the class is ase natef certified.

Re: h beam or i beam
 

so your book doesn't make the comparison of H and I beams? I thought thats what we were talking/arguing about.....

Re: h beam or i beam
 

there's actually a natef ceft. question that compares the two,. that was on a final.

Re: h beam or i beam
 

Since I have to ask, I'd be interested to see the question.

Re: h beam or i beam
 

I get it tomorrow.

Re: h beam or i beam
 

"most connecting rods are formed in a ________ shape for strength."

T-beam
H-beam
I-beam
U-beam

Re: h beam or i beam
 

How the ---- does that mean I beams are stronger than H beams?

You are totally worthless.

Re: h beam or i beam
 

Depends on which direction the rod will fail. I have no fact content to support my opinion so read on only for my 2 cents, I dropped out of ME like a drunk idiot.

I can't see how rods would have near the side loading to make an H rod better suited the application. The big end of the rod is basically reciprocating front to back at a high rate while the little end sits still. So the rod's going to want to flex in that direction. Then factor in the assembly going up and down in the cylinder and the forces trying to compress the rod it's going to want to bend in the same direction. Most broken rods I've seen were bent in that direction before they broke, not bent towards the other cylinders.

Isn't the point of an h or i beam to separate the material in the same direction as the bending force? basically separating it into two bars, one in compression and one in tension?

With those thoughts I've always wondered which is better and why aftermarket forged rods are H-beams, but I have opinions about cost of manufacturing.

Re: h beam or i beam
 

Re: h beam or i beam
 

so you quoted an article that has no factual evidence on why they chose what they chose other than, "well those guys are using it, so they must be right"? There still is no valid comparison anywhere in any of your posts. I'm not saying you are wrong, I am trying to point out that what you are saying is based on nothing more than a belief that evidently can't be confirmed by you.