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-   -   cro-moly or steel? (https://www.bikeforums.net/bmx/56177-cro-moly-steel.html)

phenix 06-27-04 01:33 PM

cro-moly or steel?
 
which is better material? cro-moly or steel?

like which is the lightest and which could take up the most beatings?

jeff williams 06-27-04 01:55 PM

Chromoly is a form of steel, these are the elements used to harden.

Chromoly is stronger. Anything claiming 'High tensile steel' is garbage. There are good alloys not chromo- but it is the industry norm for strong steel frames\ headsets.
>Reynolds 4130 Chromoly< the stuff BIKES are made of.

Lightness takes you to Titanium alloy. No difference prob' between regular steel and chromo- but bmx riding is a strength rather than weight consideration.

>jef.

PGZX3 06-27-04 04:08 PM

chromoly is lighter than steel in that it takes less of it to make a strong frame than the typical 'hi ten' steel.....

so that being said, I leave you with a line from FuManchu "Out ridin... backiní day
4130.. only way!" off the song Anodizer

jeff williams 06-28-04 11:09 AM

Why are these bike built w\ tensile steel rear tri>angles? (seat stay\ chainstay). T-tube Chromo...


The dk featured (older model) complete front tri>angle chromo- other 2, the seat tube is 'tensile steel.'

MIGHT...mean a better build?


I think....the rear is made to fail. The soft\ hard of chromo front, tensile rear feels good to begin, after jumping the bike goes way soft rear.

novice_101 06-28-04 12:49 PM

chromoly of course man

PGZX3 06-28-04 05:42 PM

the theory behind the hi ten rear end is that it is cheaper to make....so it reduces the cost of the bike......nothing more....like bikes that have a chromoly seat tube...just so they can put a 4130 sticker on the bike and not be false advertising....

jeff williams 06-28-04 05:55 PM


Originally Posted by PGZX3
the theory behind the hi ten rear end is that it is cheaper to make....so it reduces the cost of the bike......nothing more....like bikes that have a chromoly seat tube...just so they can put a 4130 sticker on the bike and not be false advertising....

Ya, that sounds right.

PGZX3 06-29-04 10:55 AM

yeah...you're definately right about the tensile steel weakening over time though, I remember I had a huffy MJ12 that I rode for a while and after about a year or two it began to noticably bend on hard landings


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