i don't think anyone has heard of "Aluminus"

No sir I have not. I just don't pay much attention to things I don't use. To be perfectly honest, I don't like Aluminum. The look, the feel, the ride. It doesn't feel right so I don't use it/ read about it.

this guy hates aluminum so much he won't even read about it! take that aluminum!

I KNOW EVERYTHING!

(please stop talking about things i don't know about)

Hey hey guys, I never use/used the word hate. It's a hard word. I just dislike it. I like to keep on the traditional side and I'm dang sure the original bike was made from steel.

Per 'er there ;))


Thanks alot peeps...looks like I need a purchase and a hacksaw blade. yeah.....try cutting aluminum WOW!

Yeah, by the way , you know any places that sell risers (NOT carbon) everything on the internet is for mountain bike.

Now these are more like it, but pretty sure non store-bought.

http://www.flickr.com/photos/neko43/2102100077/

Nothing wrong with a preference, but it's worth noting for historical accuracy that most decent handlebars have been aluminum for quite some time. During the 70s/80s bike boom, "lightweights" of even moderate quality had aluminum bars.

Thank you for the history, I was not aware. I am aware though that I have never own aluminum bars.

Not quite accurate. The limited bending done to shape bars actually work-hardens them slightly . . . making them stronger.

DON

Work hardening makes things harder, not stronger. Hard + not strong = brittle. Probably not something you want to add a clamping force to.

lolol

How strange.

Not to quibble . . . but you are misinformed in this instance. The amount of bending done to bars work-hardens them, raising the tensile strength . . . they are stronger.

DON

Uh...you get a stem with more rise...

The original post seems to be asking "Why are riser bars so wide?" The answer is that they are made for mountain bikes which have a more upright ride and need more leverage.

And?

and aluminus will spontaneously combust and stems of the proper rise do not exist

duh

http://www.pacificcoaststar.com/pcs/...arlini_ape.jpg
?

I'm curious at what amount would the bending be detrimental?

I just googled "work hardening brittle" and found this:

http://www.tpub.com/content/doe/h101...h1017v2_88.htm
Please PM me if I'm totally off-base.

"Work hardening" is indeed what causes failure when you take, for example, a steel rod and bend it back-and-forth, back-and-forth, back-and-forth until it breaks.

The minimal amount of bending done to handle bars to form them into different shapes comes nowhere near the rod example above. The bending of the rod above actually increases its tensile strength to a point [well before it fails], just as forming handle bars into different shapes makes them stronger.

DON

Yes, work hardening increases the tensile strength. No, it doesn't have to be done repeatedly to cause brittle failure. When you work harden steel, it basically horizontally shortens and vertically stretches the material's stress-strain curve. It takes less deflection to fracture, but the applied stress to cause a deformation or fracture increases. Realistically, you don't apply too much stress to the handlebars unless you are doing artistic cycling or riding your bike over open sewer holes while doing artistic cycling, so it isn't of much concern.

Fallacy, I as well as several friends of mine have gone straight through risers. They always break at the bends, there is definitely cause to worry. Bars breaking happens, you apply stress to them on a daily basis and eventually they will fail. the world is imperfect.

i love them on my track bike ;)

I want to get some, flip em upside down and ride em as some crazy ass drops.
speed racer style

Well, you guys were busy while I was train-hoping.

As for the weakness of (tubing) close to bends.

PS: I've NEVER, NEVER under any circumstance seen STEEL 'break' ----It bends, bends a few times before becoming to the 'break' point.


And I'm not doing Alloy bars. Alloy bar + Steel stem = disaster...and one time use for both parts because they fuse so fast it's stupid.

I get so sick of trying to look my bike on the rack between two department store mountain bikes with 3.5 foot wide risers... these are the same bikes that will never see anything other than sidewalk and wrongway bike lane riding. I've been tempted to get out an allen wrench and remove someone's stem so I could get my damn bike out, because two bikes like this were sandwiching mine one day and my bike was trapped in the rack.