Quick Question

[Flak]

I posted this in the mtb forum, but thought you guys might be of help too.

This is what Iron Horse said about the 2006 Warrior Expert frame -"DOUBLE BUTTED ALLOY HARDTAIL FRAME". Am i correct in assuming that thats a chromoly frame? Or is that aluminium? I would have thought they would have specifically said aluminium if it was?

Whats your opinion of chromoly as opposed to 6061 aluminium by the way? I get the impression that its better despite the extra weight.

Thanks for any info you could give me.

[Kogswell]

I posted this in the mtb forum, but thought you guys might be of help too.

This is what Iron Horse said about the 2006 Warrior Expert frame -"DOUBLE BUTTED ALLOY HARDTAIL FRAME". Am i correct in assuming that thats a chromoly frame? Or is that aluminium? I would have thought they would have specifically said aluminium if it was?

Whats your opinion of chromoly as opposed to 6061 aluminium by the way? I get the impression that its better despite the extra weight.

Thanks for any info you could give me.

Sounds like an aluminum frame to me; alloy generally means aluminum alloy.

And in regards to the qestion of steel v. aluminum, I like to point folks to Scot Nichol's treatise on frame materials: http://www2.sjsu.edu/orgs/asmtms/artcle/articl.htm

For those who don't know him, Scot founded Ibis Cycles and was (is?) its chief designer and builder. I say is because I've heard that he and Ibis are back. And if you don't know Ibis, get thee to Google.

[Flak]

Thanks for ther info

So its probably aluminium, but not 6061?

[Kogswell]

Thanks for ther info

So its probably aluminium, but not 6061?

It's been a while since I looked at alu frame. But I think there's a good chance that it is 6061.

I believe that 6061 and 7005 are the two big alloys used in frame tubes.

Can anyone set me straight on that?

[Thylacine]

Chances are it's 7005 because it doesn't have to be precipitation heat treated on top of being artificially aged = cheaper and easier.