Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

The Infamous Dork Disc

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

The Infamous Dork Disc

Old 01-08-23, 08:48 PM
  #1  
urbanknight
Over the hill
Thread Starter
 
urbanknight's Avatar
 
Join Date: Mar 2006
Location: Los Angeles, CA
Posts: 23,819

Bikes: Giant Defy, Giant Revolt

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 718 Post(s)
Liked 793 Times in 474 Posts
The Infamous Dork Disc

Came across this in my YouTube recommendations and found it fascinating considering what I (and probably many others) presume the ugly piece of plastic actually does.

__________________
It's like riding a bicycle
urbanknight is offline  
Old 01-08-23, 09:15 PM
  #2  
Chuck M 
Happy With My Bike
 
Chuck M's Avatar
 
Join Date: Sep 2020
Location: Oklahoma
Posts: 1,474

Bikes: Hi-Ten bike boomers, a Trek Domane and some projects

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 557 Post(s)
Liked 1,407 Times in 687 Posts
I don't know why Safari doesn't show youtube links in posts, but I assume it is about what the spoke protector does for the bike. That being said, I don't have one on my modern bike, and the plastic one that would have been on my Raleigh USA was long gone when I got it and I won't replace it. And as I've said every time the word dork disk comes up, I love pie plates on vintage bikes.
__________________
"It is the unknown around the corner that turns my wheels." -- Heinz Stcke

Chuck M is online now  
Old 01-08-23, 09:41 PM
  #3  
Polaris OBark
ignominious poltroon
 
Polaris OBark's Avatar
 
Join Date: Jan 2022
Posts: 2,514
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 1441 Post(s)
Liked 2,144 Times in 1,159 Posts
Originally Posted by Chuck M View Post
I don't know why Safari doesn't show youtube links in posts
I haven't "upgraded" to Ventura, but Safari seems to be able to do it (and I block a lot of 3rd-party garbage).


Polaris OBark is offline  
Old 01-08-23, 09:53 PM
  #4  
Polaris OBark
ignominious poltroon
 
Polaris OBark's Avatar
 
Join Date: Jan 2022
Posts: 2,514
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 1441 Post(s)
Liked 2,144 Times in 1,159 Posts
Seth got kind of old. I guess I did too.

My oldest kid is definitely the type of person for whom keeping the dork disc in place is the right thing to do.

Does Campy make the best one?
Polaris OBark is offline  
Likes For Polaris OBark:
Old 01-08-23, 10:28 PM
  #5  
urbanknight
Over the hill
Thread Starter
 
urbanknight's Avatar
 
Join Date: Mar 2006
Location: Los Angeles, CA
Posts: 23,819

Bikes: Giant Defy, Giant Revolt

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 718 Post(s)
Liked 793 Times in 474 Posts
Originally Posted by Chuck M View Post
I don't know why Safari doesn't show youtube links in posts, but I assume it is about what the spoke protector does for the bike. That being said, I don't have one on my modern bike, and the plastic one that would have been on my Raleigh USA was long gone when I got it and I won't replace it. And as I've said every time the word dork disk comes up, I love pie plates on vintage bikes.
Basically, he did a crude test to see what happens when the chain falls off inside the big cog... and basically nothing really happened with or without the dork disc.
__________________
It's like riding a bicycle
urbanknight is offline  
Likes For urbanknight:
Old 01-09-23, 01:34 AM
  #6  
Darth Lefty 
Disco Infiltrator
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 13,508

Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem

Mentioned: 69 Post(s)
Tagged: 0 Thread(s)
Quoted: 3010 Post(s)
Liked 1,939 Times in 1,262 Posts
Originally Posted by Polaris OBark View Post
Does Campy make the best one?
Sekine. Its not even close

Schwinn had a big chrome dinner plate that was very effective. Matched the bash guard on the Ashtabula double

My Paramount had a Huret version that was pretty nice for 76, metal and plastic combo.
Darth Lefty is offline  
Old 01-09-23, 01:37 AM
  #7  
Darth Lefty 
Disco Infiltrator
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 13,508

Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem

Mentioned: 69 Post(s)
Tagged: 0 Thread(s)
Quoted: 3010 Post(s)
Liked 1,939 Times in 1,262 Posts
Originally Posted by urbanknight View Post
Basically, he did a crude test to see what happens when the chain falls off inside the big cog... and basically nothing really happened with or without the dork disc.
beg to differ


__________________
Genesis 49:16-17
Darth Lefty is offline  
Old 01-09-23, 08:02 AM
  #8  
urbanknight
Over the hill
Thread Starter
 
urbanknight's Avatar
 
Join Date: Mar 2006
Location: Los Angeles, CA
Posts: 23,819

Bikes: Giant Defy, Giant Revolt

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 718 Post(s)
Liked 793 Times in 474 Posts
Originally Posted by Darth Lefty View Post
beg to differ


Im just saying what happened in the guys (crude) experiment. Not making any claims myself.
__________________
It's like riding a bicycle
urbanknight is offline  
Old 01-09-23, 08:38 AM
  #9  
Schweinhund
Captain Dorkdisk
 
Join Date: Oct 2022
Location: The CV of California
Posts: 757

Bikes: More than I need, less than I want.

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 286 Post(s)
Liked 440 Times in 230 Posts
Originally Posted by Polaris OBark View Post
I haven't "upgraded" to Ventura, but Safari seems to be able to do it (and I block a lot of 3rd-party garbage).
install chrome and firefox. chrome because it just works, and firefox because you can harden the bejesus out of it.
Safari is inferior to both. (imho)
Schweinhund is offline  
Old 01-09-23, 08:41 AM
  #10  
Schweinhund
Captain Dorkdisk
 
Join Date: Oct 2022
Location: The CV of California
Posts: 757

Bikes: More than I need, less than I want.

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 286 Post(s)
Liked 440 Times in 230 Posts
Originally Posted by Darth Lefty View Post
beg to differ
+1
had to fix a case where the chain bunched up and ripped a spoke out
Schweinhund is offline  
Old 01-09-23, 08:47 AM
  #11  
Sy Reene
Advocatus Diaboli
 
Sy Reene's Avatar
 
Join Date: Feb 2015
Location: Wherever I am
Posts: 8,197

Bikes: Merlin Cyrene, Nashbar steel CX

Mentioned: 14 Post(s)
Tagged: 1 Thread(s)
Quoted: 4449 Post(s)
Liked 1,350 Times in 877 Posts
Has anyone ever made a cassette that has a spoke protector disc machined right onto the inside the largest cog of the cassette? Seems something like that could be the most elegant 'solution'
Sy Reene is offline  
Likes For Sy Reene:
Old 01-09-23, 09:01 AM
  #12  
Schweinhund
Captain Dorkdisk
 
Join Date: Oct 2022
Location: The CV of California
Posts: 757

Bikes: More than I need, less than I want.

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 286 Post(s)
Liked 440 Times in 230 Posts
I will happily use/display any dorkdisks/pie plates anyone cares to send my way
Schweinhund is offline  
Old 01-09-23, 10:00 AM
  #13  
Inusuit
Senior Member
 
Join Date: Sep 2020
Location: SE Wyoming
Posts: 508

Bikes: 1987 Diamondback Ascent, 1995 Specialized Rockhopper,1989 Specialized Rock Combo, 2013 Specialized Tarmac Elite

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 178 Post(s)
Liked 470 Times in 229 Posts
Style is everything.
Inusuit is offline  
Old 01-09-23, 10:01 AM
  #14  
hokiefyd 
Senior Member
 
hokiefyd's Avatar
 
Join Date: Feb 2017
Location: Northern Shenandoah Valley
Posts: 4,014

Bikes: '18 Redline Zander, '14 Surly Pugsley, '97 GT Vantara, '97 Trek MultiTrack 750, '70 Peugeot UO-18 Mixte

Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 1397 Post(s)
Liked 688 Times in 513 Posts
Originally Posted by Sy Reene View Post
Has anyone ever made a cassette that has a spoke protector disc machined right onto the inside the largest cog of the cassette? Seems something like that could be the most elegant 'solution'
Shimano makes a few freewheels with an integrated spoke protector.

https://bike.shimano.com/en-EU/produ...Z500-7-CP.html

https://bike.shimano.com/en-EU/produ...Z500-6-CP.html
hokiefyd is offline  
Old 01-09-23, 10:01 AM
  #15  
Darth Lefty 
Disco Infiltrator
 
Darth Lefty's Avatar
 
Join Date: May 2013
Location: Folsom CA
Posts: 13,508

Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem

Mentioned: 69 Post(s)
Tagged: 0 Thread(s)
Quoted: 3010 Post(s)
Liked 1,939 Times in 1,262 Posts
What's the best, or your favorite, C&V spoke protector / dork disk?
__________________
Genesis 49:16-17
Darth Lefty is offline  
Likes For Darth Lefty:
Old 01-09-23, 11:00 AM
  #16  
tcs
Palmer
 
tcs's Avatar
 
Join Date: Mar 2007
Location: Parts Unknown
Posts: 7,805

Bikes: Mike Melton custom, 1982 Stumpjumper, Alex Moulton AM, 2010 Dawes Briercliffe, 2017 Dahon Curl i8, 2021 Motobecane Turino 1x12

Mentioned: 33 Post(s)
Tagged: 0 Thread(s)
Quoted: 1314 Post(s)
Liked 1,181 Times in 714 Posts
Originally Posted by urbanknight View Post
Im just saying what happened in the guys (crude) experiment.
Yeah, he basically didn't have any tension in the drive chain. Here's another test done by a friend: 2000 miles into a self-contained cross-country tour, climbing the steepest grade, desperately shift to "gear zero". Result? 18 new drive-side spokes, thank you very much.

Fun fact: 'dork disk' does not appear as an entry in Sheldon Brown's Bicycle Glossary. See: 'spoke protector'.
tcs is offline  
Likes For tcs:
Old 01-09-23, 12:03 PM
  #17  
SoSmellyAir
Method to My Madness
 
Join Date: Nov 2020
Location: Orange County, California
Posts: 2,397

Bikes: Trek FX 2, Cannondale Synapse, Cannondale CAAD4, Santa Cruz Stigmata GRX

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 1211 Post(s)
Liked 797 Times in 585 Posts
Originally Posted by Chuck M View Post
I don't know why Safari doesn't show youtube links in posts, ...
Same here on Microsoft Edge (Chromium). It used to work but stopped a few months ago. But if I quote the thread in a reply, the YouTube link shows up in the editing window.
SoSmellyAir is offline  
Old 01-09-23, 12:18 PM
  #18  
veganbikes
Clark W. Griswold
 
Join Date: Mar 2014
Location: ,location, location
Posts: 11,470

Bikes: Foundry Chilkoot Ti W/Ultegra Di2, Salsa Timberjack Ti, Cinelli Mash Work RandoCross Fun Time Machine, 1x9 XT Parts Hybrid, Co-Motion Cascadia, Specialized Langster, Phil Wood Apple VeloXS Frame (w/DA 7400), R+M Supercharger2 Rohloff, Habanero Ti 26

Mentioned: 48 Post(s)
Tagged: 0 Thread(s)
Quoted: 3555 Post(s)
Liked 2,884 Times in 1,930 Posts
Old school metal spoke protectors looked decent in some cases but plastic ain't really going to help much. Adjust your rear derailleur properly set the limits and if you get into a crash and your derailleur goes into the spokes don't expect a little piece of plastic to do a lot. If your limits are set you won't be going into the spokes with your chain and if they do the chain is thick heavy metal and the plastic spoke protector is thin plastic. I have actually had a lot of issues where the cassette is not properly spinning and turning poorly and mechanics are racking their brains trying to figure it out until we remove that piece of plastic and everything works like a charm.

If you like them go for them it is your bike but I wouldn't put one on a bike (unless maybe the vintage ones with some flair or maybe something nice carbon fiber with some cool designs or something!
veganbikes is offline  
Old 01-09-23, 01:17 PM
  #19  
rumrunn6
Senior Member
 
rumrunn6's Avatar
 
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Posts: 28,767

Bikes: Bottecchia Sprint, GT Timberline 29r, Marin Muirwoods 29er, Trek FX Alpha 7.0

Mentioned: 109 Post(s)
Tagged: 0 Thread(s)
Quoted: 4986 Post(s)
Liked 3,112 Times in 2,064 Posts
just don't try to burn off a plastic one

don't remember the old thread where someone tried that. I think it turned into a "situation". or maybe ppl were just joking about it?
rumrunn6 is offline  
Old 01-09-23, 01:46 PM
  #20  
RB1-luvr
I don't know.
 
RB1-luvr's Avatar
 
Join Date: May 2003
Location: South Meriden, CT
Posts: 1,474

Bikes: '90 B'stone RB-1, '92 B'stone RB-2, '89 SuperGo Access Comp, '03 Access 69er, '23 Trek 520, '14 Ritchey Road Logic, '09 Kestrel Evoke, '17 Surly Wednesday, '89 Centurion Accordo, '15 CruX, '17 Ridley X-Night

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 137 Post(s)
Liked 315 Times in 193 Posts
Originally Posted by Schweinhund View Post
I will happily use/display any dorkdisks/pie plates anyone cares to send my way
I have a nice clear plastic Shimano one from a '88 Centurion you can have. PM your address. I dislike throwing stuff out.
RB1-luvr is offline  
Likes For RB1-luvr:
Old 01-09-23, 02:17 PM
  #21  
Schweinhund
Captain Dorkdisk
 
Join Date: Oct 2022
Location: The CV of California
Posts: 757

Bikes: More than I need, less than I want.

Mentioned: 8 Post(s)
Tagged: 0 Thread(s)
Quoted: 286 Post(s)
Liked 440 Times in 230 Posts
Originally Posted by RB1-luvr View Post
I have a nice clear plastic Shimano one from a '88 Centurion you can have. PM your address. I dislike throwing stuff out.
sent.
Schweinhund is offline  
Old 01-09-23, 02:42 PM
  #22  
grumpus
Full Member
 
Join Date: Apr 2016
Posts: 293
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 119 Post(s)
Liked 95 Times in 79 Posts
Originally Posted by veganbikes View Post
Old school metal spoke protectors looked decent in some cases but plastic ain't really going to help much.
If you do bend your rear mech I think it's less likely to snag on a smooth bit of plastic than an unprotected spoke. Rear mech in spokes can have you walking home. I actually bought a plastic dork disc not long ago to fit on my hack bike because I tend to treat it careless, but I didn't check the hub flange diameter so it will be going on another bike that I've not started yet.
grumpus is offline  
Old 01-09-23, 02:56 PM
  #23  
curbtender
Senior Member
 
curbtender's Avatar
 
Join Date: Mar 2007
Location: SF Bay Area, East bay
Posts: 7,971

Bikes: Miyata 618 GT, Marinoni, Kestral 200 2002 Trek 5200, KHS Flite, Koga Miyata, Schwinn Spitfire 5, Mondia Special, Univega Alpina, Miyata team Ti, Santa Cruz Highball

Mentioned: 49 Post(s)
Tagged: 0 Thread(s)
Quoted: 1345 Post(s)
Liked 1,653 Times in 848 Posts
The BOC has had it's share. I've seen some pretty well demolished. I'm going to say they are pretty much like a helmet, good to have if things go wrong.
curbtender is offline  
Likes For curbtender:
Old 01-09-23, 02:58 PM
  #24  
dedhed
SE Wis
 
dedhed's Avatar
 
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 9,730

Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970

Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Quoted: 2412 Post(s)
Liked 2,747 Times in 1,674 Posts
Originally Posted by rumrunn6 View Post
just don't try to burn off a plastic one

don't remember the old thread where someone tried that. I think it turned into a "situation". or maybe ppl were just joking about it?
​​​​​​I set my rear wheel on fire
dedhed is offline  
Likes For dedhed:
Old 01-09-23, 03:27 PM
  #25  
grumpus
Full Member
 
Join Date: Apr 2016
Posts: 293
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 119 Post(s)
Liked 95 Times in 79 Posts
Originally Posted by tcs View Post
Result? 18 new drive-side spokes, thank you very much..
The chain usually just damages the drive side spokes that are heads-in, the heads-out spokes are protected.
grumpus is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information -

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.