The high performance road bike market seems split as to whether or not a bike should have a replaceable rear der. hanger. Scouring some USENET achieves, one Trek apologist claims that replaceable hangers aren't sufficiently stiff and bend with normal use, which leads to poor indexing. Maybe I misunderstood all of my mechanics and materials classes, but the bottom run of a chain doesn't really have a whole lot of tension in it. Even if that was an issue, simple design modifications could easily resolve it. Anyway...
Shop guys: what are some of the pros of non-replaceable derailer hangers? Cons of replaceables?
Some things come to mind
Some things come to mind from this non-shop guy:
- you can make them out of different materials
- it can be real hard to find replacement ones when one built into the frame could be properly realigned
- i'm kinda hungry.
replaceable
derailleur hanger replaceability is only an issue on non-steel bikes, so presumably you're talking about a carbon, aluminum or maybe ti frame.
so...get something replaceable. the whole reason derailleur hangers went to being replaceable is because you can't bend those materials around a whole lot before they snap.
if you get nonreplaceable you are sacrificing your frame for no reason. i have a cannondale road frame in my attic with a busted nonreplaceable derailleur hanger on it. still trying to figure out what to do with it.
there is a fair amount of force put on the derailleur hanger by the derailleur, because shifting causes the body of the derailleur to move in towards the wheel and the spring of the derailleur to extend, so there's some definite twist/bend going on there.
but anyways, the dude on usenet is talking about something i've absolutely never heard of. but even if he's right, so what? it's probably that happens over the course of 5 years of hard riding. it's a $15 piece. put a new one on. derailleurhanger.com is great. they even have a lot of aftermarket hangers machined from 7075 Al, which is a lot stronger than many of the pos stock hangers.
the hangers are designed to
the hangers are designed to be 'softer' than the frame (and the der for that matter) so that it becomes the point of failure (15$ vs 100-3000$) kind of like a helmet (they aren't intended (as some would lead you to believe) to be bent back into place over and over again. once or twice, cool. beyond that, you're asking for a ticket to sucksville on the derailed chain express.
the industry, and it's multitude of factories, have seen fit to follow in the style of things like seatpost diameters and offer as many different shapes of hangers as there are possible cloud patterns in the sky. with no standard, the replaceable hanger is, while replaceable, still only as good as it's continued production. bikes without replaceable hangers can have the dropouts replaced (with the exception of the old Crack-n-Fails...but if you think riding Coke cans is cool, that's what you get); bikes with replaceable hangers will only last an over-cautious rider as long as it takes to run through what stock he was able to horde away between the cracks in his basement not already filled with Mountain Dew and cigarettes.
blah blah blah, if you made it this far, the point is that shifting, crashing, bending, and Gregging will fuck up your drivetrain. just like people underestimate the worth of replacing their cables in order to improve shifting and braking, they really underestimate the worth of replacing the little stick of gum that holds the testicles of their bike onto its frame.
btw, if you built your bikes with german engineered ovaries, you wouldn't really understand this thread...suckers.
and just how much
is a ticket to sucksville on the derailed chain express?
And I would have to add that TEQUILA has ruined more of my drivetrains and frames than anything else. Gregging has only managed to fuck up my social life.
totally OT
can you easily reach the thumb shifter of campagnolo ergo levers from the drops? (this is an unresolved question in my ongoing SRAM vs. campy decision making process)
I can
but you know what they say about guys with big hands.
Yeah,
They wear big gloves
Hell yeah, and you can dump
Hell yeah, and you can dump a bunch of gears doing it.
.
only on chours and record now :/
Sorry. I'm not familiar
Sorry. I'm not familiar with Centaur and Veloce.
nor should you be
it's commoner garbage.
leave me outta this
stop soiling my name.
verdict
Ride Steel!
Seriously though, I have fucked up a hanger on an aluminum bike and im glad i could replace it. I ride steel now.
.
oh yeah definitely steel. i was just trying to figure out if a steel frame would benefit or suffer from a replaceable hanger.
it certainly wouldn't suffer
but it does take to being bent back a lot better
no new thread
here's a video about a new style of skateboarding that's starting in San Fran. You ride a different style board where you have to push the whole time.
http://www.youtube.com/watch?v=b2885aR6o6s
nice....
the fourth "related videos" link was for No Brakes ATL sprint
nice.
ha
i like the fix push messenger
and the way they dismount their boards by swinging one leg over the top.
yeah.
they could have stopped with that part and the video would have been a lot better. the tricks at the end were pretty funny/cool too.