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

Shimano Front Derailleur Screwdriver ?

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.

Shimano Front Derailleur Screwdriver ?

Old 07-17-20, 10:18 PM
  #1  
frogman
Senior Member
Thread Starter
 
frogman's Avatar
 
Join Date: Sep 2006
Location: Napa Valley, CA
Posts: 865

Bikes: Wife says I have too many :-)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Liked 233 Times in 151 Posts
Shimano Front Derailleur Screwdriver ?

Does Park make a special screwdriver for adjusting Shimano front derailleur screws ? I have tried phillips and have ended up using a small flat blade screwdriver. Not very good but it works. It looks like a small flat screwdriver with a round pointed center would be the thing needed.
frogman is offline  
Old 07-17-20, 10:50 PM
  #2  
mr_scary
Junior Member
 
Join Date: Jul 2020
Posts: 21
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked 1 Time in 1 Post
I use a number 2 phillips head, it helps to back off some cable tension before adjusting the limiter
mr_scary is offline  
Old 07-17-20, 11:00 PM
  #3  
Crankycrank
Senior Member
 
Join Date: Jan 2009
Location: San Diego, CA
Posts: 3,105
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
Quoted: 666 Post(s)
Liked 649 Times in 494 Posts
You need a JIS screwdriver. https://www.vesseltools.com/handtool...trial-standard Various mfrs and levels of quality available. Much harder to strip out "JIS-Philips" heads with these. Works on all Asian screws.
Crankycrank is offline  
Likes For Crankycrank:
Old 07-17-20, 11:36 PM
  #4  
frogman
Senior Member
Thread Starter
 
frogman's Avatar
 
Join Date: Sep 2006
Location: Napa Valley, CA
Posts: 865

Bikes: Wife says I have too many :-)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Liked 233 Times in 151 Posts
A JIS phillips. Makes sense for a Japanese derailleur
I have a set of JIS screwdrivers. Hadn't thought of using them. I use them for removing the cabinet screws on Yaesu ham radio cabinets so I don't round out the screw heads.
frogman is offline  
Old 07-18-20, 03:06 AM
  #5  
tomtomtom123
Senior Member
 
Join Date: Jan 2017
Posts: 1,027
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 337 Post(s)
Likes: 0
Liked 113 Times in 81 Posts
Would it help if you replaced the screws with DIN 912 or 913 with hex socket, like what SRAM uses?
tomtomtom123 is offline  
Old 07-18-20, 05:26 AM
  #6  
shelbyfv
Expired Member
 
shelbyfv's Avatar
 
Join Date: Jun 2007
Location: TN
Posts: 10,099
Mentioned: 32 Post(s)
Tagged: 0 Thread(s)
Quoted: 2996 Post(s)
Liked 3,853 Times in 1,978 Posts
Originally Posted by frogman View Post
I have a set of JIS screwdrivers.
Sounds as if you are good to go
shelbyfv is offline  
Old 07-18-20, 05:27 AM
  #7  
blakcloud
Senior Member
 
blakcloud's Avatar
 
Join Date: Aug 2007
Posts: 2,581
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 602 Post(s)
Liked 339 Times in 218 Posts
Originally Posted by onyerleft View Post
I believe that Park offers something like that -- why don't you check Park's webite and find out for yourself instead of asking strangers on the internet? PRO TIP: I've never tried this but many have said you can just grind down the tip of an ordinary Phillips, and it works well enough.
Maybe you forgot what the purpose of a bicycle forum is especially in the Bicycle Mechanics sub forum. To add insult to injury, you (the stranger) give advice on grinding down a screwdriver. You answered the question from the OP that you specifically told them not ask. This is mind boggling.

Back to regular programing.

JIS screwdrivers are the proper tool as reported above by the nice strangers. Though the Park Tool one is expensive.
blakcloud is offline  
Likes For blakcloud:
Old 07-18-20, 05:41 AM
  #8  
Bike Gremlin
Mostly harmless
 
Bike Gremlin's Avatar
 
Join Date: Nov 2010
Location: Novi Sad
Posts: 4,262

Bikes: Custom made on Scott Speedster frame, Custom made on a 1996. steel MTB frame (all but frame changed at least once in the past 20 years).

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1021 Post(s)
Liked 103 Times in 68 Posts
Originally Posted by onyerleft View Post
PRO TIP: I've never tried this but many have said you can just grind down the tip of an ordinary Phillips, and it works well enough.
Hmm, close-ish, but not as good as JIS. At least with the ones I tried with.
Bike Gremlin is offline  
Old 07-18-20, 06:01 AM
  #9  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,280

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1420 Post(s)
Liked 1,038 Times in 695 Posts
It also helps if you relieve the spring pressure on the screw by pushing/pulling the derailleur by hand while making the adjustment, instead of trying to use the screw to drive against the force of the spring. But the correct JIS screwdriver or or swapping the screws for socket head is the best in any case.
dsbrantjr is offline  
Old 07-18-20, 08:01 AM
  #10  
cyccommute 
Mad bike riding scientist
 
cyccommute's Avatar
 
Join Date: Nov 2004
Location: Denver, CO
Posts: 25,482

Bikes: Some silver ones, a red one, a black and orange one, and a few titanium ones

Mentioned: 138 Post(s)
Tagged: 1 Thread(s)
Quoted: 5001 Post(s)
Liked 2,583 Times in 1,524 Posts
Originally Posted by blakcloud View Post

JIS screwdrivers are the proper tool as reported above by the nice strangers. Though the Park Tool one is expensive.
Yes, the Park JIS screw driver is expensive. But you can get JIS bits for magnetic screw drivers. I just recently went that direction and have to say the screwdriver works much better.
__________________
Stuart Black
Gold Fever Three days of dirt in Colorado
Pokin' around the Poconos A cold ride around Lake Erie
Dinosaurs in Colorado A mountain bike guide to the Purgatory Canyon dinosaur trackway
Solo Without Pie. The search for pie in the Midwest.
Picking the Scablands. Washington and Oregon, 2005. Pie and spiders on the Columbia River!
Days of Wineless Roads. Bed and Breakfasting along the KATY
Twisting Down the Alley. Misadventures in tornado alley.
cyccommute is online now  
Old 07-18-20, 08:11 AM
  #11  
frogman
Senior Member
Thread Starter
 
frogman's Avatar
 
Join Date: Sep 2006
Location: Napa Valley, CA
Posts: 865

Bikes: Wife says I have too many :-)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 308 Post(s)
Liked 233 Times in 151 Posts
I tried using a JIS phillips screwdriver as suggested and it works perfectly. Thanks for all the reposnses every one.
frogman is offline  
Old 07-18-20, 09:41 AM
  #12  
HeHateMe2976
Junior Member
 
Join Date: Jul 2020
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked 0 Times in 0 Posts
Great information here. Never heard of this before.
HeHateMe2976 is offline  
Old 07-18-20, 10:43 AM
  #13  
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Posts: 8,280

Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta

Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 1420 Post(s)
Liked 1,038 Times in 695 Posts
Not so much on derailleur screws, but on electronics items and many others, JIS screws can be recognized by a dot or dimple on the head next to the drive recess.

dsbrantjr is offline  
Likes For dsbrantjr:
Old 07-18-20, 11:26 AM
  #14  
veganbikes
Clark W. Griswold
 
Join Date: Mar 2014
Location: ,location, location
Posts: 10,214

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: 42 Post(s)
Tagged: 0 Thread(s)
Quoted: 2974 Post(s)
Liked 2,208 Times in 1,459 Posts
The Park Tool DSD-2 is probably the finest screwdriver I have used and I highly recommend it. It is supposed to "exceed JIS standards" I don't know if that is totally true but it certainly is excellent at its job.
veganbikes is offline  
Old 09-14-20, 11:19 PM
  #15  
Bike Gremlin
Mostly harmless
 
Bike Gremlin's Avatar
 
Join Date: Nov 2010
Location: Novi Sad
Posts: 4,262

Bikes: Custom made on Scott Speedster frame, Custom made on a 1996. steel MTB frame (all but frame changed at least once in the past 20 years).

Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1021 Post(s)
Liked 103 Times in 68 Posts
Originally Posted by dsbrantjr View Post
Not so much on derailleur screws, but on electronics items and many others, JIS screws can be recognized by a dot or dimple on the head next to the drive recess.

I made a short video demonstration, comparing three different brand Phillips screwdrivers on a Shimano RD limit screw, including one with a tip ground down a bit - which seems to help a little (at the end I talked a bit about Pozidriv as well, but that's not relevant for this topic):

Bike Gremlin is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

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

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.