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Old 05-28-07, 11:32 PM   #1
ragboy
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dork disc -- yay or nay?

So does the so-called plastic "dork disc" a legitimate safety feature on an 80's road bike or can it be taken off without worry of me going flying over the handlebars?
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Old 05-28-07, 11:38 PM   #2
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get rid of it.
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Old 05-28-07, 11:46 PM   #3
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get da' chrome disc
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Old 05-28-07, 11:55 PM   #4
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[QUOTE]
Quote:
Originally Posted by ragboy
So does the so-called plastic "dork disc" a legitimate safety feature on an 80's road bike


Yepper, the "so called" plastic dork disc (which is a stupid label if I ever heard one) was indeed a legitimite safety feature. In those days most bikes used DT friction shifters, and if you were'nt careful shifting to the lowest cog you could overshift and put the chain right into the spokes.

You can pretty much guess what would happen after that.
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Old 05-29-07, 12:33 AM   #5
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[QUOTE=Wino Ryder]
Quote:



Yepper, the "so called" plastic dork disc (which is a stupid label if I ever heard one) was indeed a legitimite safety feature. In those days most bikes used DT friction shifters, and if you were'nt careful shifting to the lowest cog you could overshift and put the chain right into the spokes.

You can pretty much guess what would happen after that.
So you're saying you would leave it on? I use index shifting 99% of the time.
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Old 05-29-07, 12:38 AM   #6
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You don't need it if the limit screws are set right on your rear derailer.
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Old 05-29-07, 03:10 AM   #7
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If you're a Fred, leave it on.
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Old 05-29-07, 06:50 AM   #8
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There is no safety issue with removing it.
As stated above, so long as the limit screws are set correctly, your chain shouldn't overshift. I took the disc off of my mtn.bike when I changed the cassette. My road bike still has one, but it's small and black and you wouldn't notice it unless looking for it. If I take the cassette off for any reason, I'll probably remove it (the cassette would have to come off to take this one off-unless I tried to cut it), otherwise, I'll leave it on-like I said, it really isn't noticeable.
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Old 05-29-07, 06:51 AM   #9
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Quote:
Originally Posted by robo
You don't need it if the limit screws are set right on your rear derailer.
Above is theoretically correct.

However, I've dropped a chain into the spokes a couple of times in the past 7+ years while mountain biking. It was probably due to a combination of shifting + climbing + rough terrain. Luckily, I was going slow, felt the chain slip and let-up on the pedals before any major damage.
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Old 05-29-07, 06:59 AM   #10
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I wouldn't use it on a modern road bike. But mountain bikes are a different matter. It's all too easy to prang the rear dérailleur on a limb or rock and then all bets about the lower chain limit are off. Drop the chain inside and you may well eat the dérailleur and wheel, after munching on a face full of dirt.

Make your decision based on calculated risk, not on fears of being called a "Fred".
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Old 05-29-07, 07:57 AM   #11
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I leave mine on just to piss people off.

Really though, my bike came with one, and the real question is, why bother removing it? It weighs approximately nothing and provides some protection against an admittedly rare chance of overshifting, but a rare chance with severe consequences. So what does it hurt, other than one's OCP sensibilities?

I say, defy convention. Rock the dork disc.
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Old 05-29-07, 09:37 AM   #12
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Originally Posted by Mr. Underbridge
the real question is, why bother removing it?
Eventually it breaks, and starts rattling around, or worse - preventing the cassette from freewheeling... this has been my experience. No reason to take it off before that occurs, though.


Some of the new Cannondales have gigantic ugly huge black spoke protectors.
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Old 05-29-07, 10:51 AM   #13
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I think they are MORE useful on index systems, if you 1) didn't have the limit screws set right and 2) switch to friction.
I just checked my bikes and it's 50-50, but all the bikes ridden by my wife and kids have 'em. My 12-year-old daughter just loves the huge chrome one on her Ficelle.
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Old 05-29-07, 11:32 AM   #14
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[QUOTE=Wino Ryder]
Quote:



Yepper, the "so called" plastic dork disc (which is a stupid label if I ever heard one) was indeed a legitimite safety feature. In those days most bikes used DT friction shifters, and if you were'nt careful shifting to the lowest cog you could overshift and put the chain right into the spokes.

You can pretty much guess what would happen after that.
Nope. All derailers have limit screws...even friction downtube controlled ones. The dork disk is a back up for people who don't know how to adjust their derailer so that the chain doesn't move too far inboard and run off the back of the freewheel (hub). No bike needs them if properly adjusted.

As for sucking a chain into the spokes, it's not all that bad. If it happens, stop pedalling!
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Old 05-29-07, 12:45 PM   #15
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Carefully remove it and put it on scambay.
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Old 05-29-07, 05:32 PM   #16
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Couldn't you have asked a more straightforward question - which chain lube is the best, or something?

My buddy's Basso is en route to a framebuilder to have the der hanger replaced after his suckingspoke incident. He'd say, leave the disk on.

Me, I take mine off, following the adjust-it-correctly-and-there's-no-problem philosophy. Unless you're going for the retro look with your 80's ride, in which case you gotta wear crochet-back gloves, too.
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Old 05-29-07, 06:17 PM   #17
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If your derailleur is properly set up and you ensure that it stays that way, take it off.
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Old 05-29-07, 06:50 PM   #18
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Quote:
Originally Posted by freeranger
There is no safety issue with removing it.
As stated above, so long as the limit screws are set correctly, your chain shouldn't overshift.
+1. Definitely take it off. I heartly recommend it.

Now, if you should happen to shift into the spokes and you live in the St Louis area, PM me and I'll gladly give you my "I shifted into the spokes and buggered up my 8 driveside spokes BF special. Hope to hear from you soon.
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Old 05-29-07, 07:26 PM   #19
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Quote:
Originally Posted by DMF
I wouldn't use it on a modern road bike. But mountain bikes are a different matter. It's all too easy to prang the rear dérailleur on a limb or rock and then all bets about the lower chain limit are off. Drop the chain inside and you may well eat the dérailleur and wheel, after munching on a face full of dirt.

Make your decision based on calculated risk, not on fears of being called a "Fred".
Do you really faceplant in such a case? If the front wheel blocks, then yes, I can see how you'd endo, but rear wheel?
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Old 05-29-07, 08:59 PM   #20
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You pay your money and you take your choice.

I don't have them on myself although I have given a felow club member a lift home once as I was passing in a car and saw him stoped on the side of the road checking out the rear wheel. His chain had gone off the largest sprocket into the spokes, pulled the rear derailer into the spokes as well and generaly made a mess of things.

Regards, Anthony
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Old 05-29-07, 09:21 PM   #21
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Those who don't need it don't need to ask.
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Old 05-30-07, 01:32 PM   #22
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Quote:
Originally Posted by cyccommute

As for sucking a chain into the spokes, it's not all that bad. If it happens, stop pedalling!
Problem is, pedalling or not, if the wheel is still turning, it can grab the chain and drag the derailleur into the spokes, bending it or even tearing it from the hanger.

My take is this: if the derailleur is properly adjusted, you may never have a problem.

Just like if you always drive properly, you may never need your seatbelt...

(betcha wear yours all the time!)



I don't have one, but I am willing to accept whatever consequences should arise from my choice. After all, I own a shop. Inevitably, we get a few guys a year who knuckle under to peer pressure and take them off. They pfutz with their derailleur, then suddenly one day "I was just riding along when the derailleur fell off my bike! That's covered under warranty, right?" Then we look at it. No disk. Broken hanger-sometimes smashed seatstay. All because the chain got lodged between the cassette and spokes due to the absence of a bantam-weight piece of apparently manhood devastating plastic.

The women are smarter. I've yet to have a woman ask me to remove their spoke protector. It's always the husband or boyfriend...
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Old 05-30-07, 02:08 PM   #23
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Quote:
Originally Posted by wroomwroomoops
Do you really faceplant in such a case? If the front wheel blocks, then yes, I can see how you'd endo, but rear wheel?
Uhhh ... "sudden deceleration" ?
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Old 05-30-07, 02:16 PM   #24
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Quote:
Originally Posted by DMF
Uhhh ... "sudden deceleration" ?
When it's the rear wheel to block, you will fall, probably but not necessarily. A faceplate seems very unlikely in that case.

Take it from someone who falls every 2 months, almost on a cue. OK, I *might* have learned how to fall, but still, I think I'm qualified.
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Old 05-30-07, 03:17 PM   #25
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Quote:
Originally Posted by Mr. Underbridge
, why bother removing it?
Because the plastic ones turn brittle fairly quickly and start to break away on their own
Quote:
Originally Posted by Mr. Underbridge
provides some protection against an admittedly rare chance of overshifting,
Don't kid yourself, the plastic breaks far too easily to provide any real measure of protection
Quote:
Originally Posted by Mr. Underbridge
So what does it hurt, other than one's OCP sensibilities?
Other than providing a false sense of security to the Fred's of the world, they usually break off on the side of the road or worse out on the trail adding even more ugly garbage
Quote:
Originally Posted by Mr. Underbridge

I say, defy convention. Rock the dork disc.
Unless you're rocking an old school chrome special from back in the day (in which case more power to you) lose the dork disc, and learn to adjust your dérailleur.
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