4130 measurements for homemade bars

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Eric Magray

Steel Member
Mike Billick said:
i would use chromalloy its not as heavy as steel but not as strong its is stronger than alumminum ut a little heavyer so i would make the bars out of chromalloy
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chromoly = lighter and stronger than mild steel

^360+tabletop^ said:
chromeolly is just a fancey name for "alloy" yes those mesurements are fine dont forget the dropouts on the bottom of bars for your clamps.
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chromoly is short for chromium molybdenum alloy. there are all different kinds of alloys.

http://www.onlinemetals.com/merchant.cfm?pid=7341&step=4&showunits=inches&id=250&top_cat=0 said:
[/] Would 1.12" ID for the steer column still work?
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magnesium is strong but i think its way expensive
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magnesium = expensive, weak/brittle

dylan594 said:
if ur gonna weld it ur self u might wana research welding diferent types of metals certain types of metal use different tempretures and different wire speeds
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dont mig weld chromoly, it will suck. tig weld it with 1/16 lanthanated tungsten, 100% argon @ 20cfm, and 1/16 ER70S-2 filler wire. and make sure whoever welds it at least has experience with mild or stainless steel tig welding.

http://www.onlinemetals.com/merchant.cfm?pid=7332&step=4&showunits=inches&id=250&top_cat=197 said:
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ahhaha, anything less will probably bend.
 
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Nick Morland

Member
magnesium is strong eric cause thats why they call car wheels 'mags' cause the really good ones that r the most expesice r made of magnesium and the shitty cheap ones are made of alloy so yeh.
 
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Eric Magray

Steel Member
but wheels on cars are so much thicker and bulkier and can withstand the forces of a car. you cant really compare car wheels to scooter parts.

and you cant call alloy shitty. there are tons of different alloys, some better than others, some better for one job that wouldnt be good for another. magnesium is good for car wheels but wouldnt cut it on a scooter. magnesium is lighter than aluminum but also more brittle. you break aluminum decks enough so why would you wanna put magnesium on you scooter at all is its more expensive AND breaks easier?
 
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Nick Morland

Member
i dont think you understand what i've been saying i said alloy wheels are shit magnesium wheels are good not alloy is shit just the wheels made of them. also why wouldnt it work on scooters? mag wheels undergo alot more force and pressure than what a scooter rider puts on a scooter. its not more brittle because if it was the mag wheels would break easier than alloy so i think im right.
 
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Eric Magray

Steel Member
magnesium just isnt right for scooters. if you used it as a scooter deck it would break quicker than aluminum because aluminum is more malleable and prefers to shear if you grind on something rough rather than chip like magnesium would.
 
J

Jdbug_rob

Steel Member
eric magray said:
but wheels on cars are so much thicker and bulkier and can withstand the forces of a car. you cant really compare car wheels to scooter parts.

and you cant call alloy shitty. there are tons of different alloys, some better than others, some better for one job that wouldnt be good for another. magnesium is good for car wheels but wouldnt cut it on a scooter. magnesium is lighter than aluminum but also more brittle. you break aluminum decks enough so why would you wanna put magnesium on you scooter at all is its more expensive AND breaks easier?
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a good example of this is aluminium steertubes over steel steertube, aluminium steertube are kinder to the fork and less like to damge/break the fork than a steel steer tube.
i believe.
 
A

alexiorio

Member
Kurtis101 said:
would 1/18 diamiter fit over a pro model fork?
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1.18" inner diameter you mean? It probably would, but you'd probably have to tape some sand paper on a drill bit and sand the inside of it a bit.
 
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