Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

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.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 01-30-12, 07:19 PM   #1
NeedARealBike
Member
Thread Starter
 
Join Date: Jan 2012
Location: Seal Beach, CA
Bikes: Huffy Savannah Commuter Hybrid
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Removing stuck screws?

My bike came with a decent carrier rack when i got it about a couple months ago but the only problem is the top two screws closest to my seat post just wont budge, i've tried using different screw drivers and one of the screws got stripped a little bit. I'd really like to be able to use panniers instead of my messenger bag
NeedARealBike is offline   Reply With Quote
Old 01-30-12, 07:24 PM   #2
JanMM
rebmeM roineS
 
JanMM's Avatar
 
Join Date: Jan 2006
Location: In Central IN
Bikes: RANS V3, RANS V-Rex, RANS Screamer
Posts: 13,339
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)
Screw head is now too beat up to cooperate with a screwdriver? A screw exractor is one option. http://www.acehardware.com/family/in...goryId=1259460
It's not a hex head screw, is it?

Are you removing a rack? Or, just adjusting it?
__________________
RANS V3 - Ti, RANS V-Rex - cromo, RANS Screamer - cromo
JanMM is offline   Reply With Quote
Old 01-30-12, 07:35 PM   #3
NeedARealBike
Member
Thread Starter
 
Join Date: Jan 2012
Location: Seal Beach, CA
Bikes: Huffy Savannah Commuter Hybrid
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by JanMM View Post
Screw head is now too beat up to cooperate with a screwdriver? A screw exractor is one option. http://www.acehardware.com/family/in...goryId=1259460
It's not a hex head screw, is it?

Are you removing a rack? Or, just adjusting it?
I've actually yet to attach the rack, the extractor kit looks good. It similar to a regular phillips screw but the outside of the head is shaped like a hex bolt but very thin.
NeedARealBike is offline   Reply With Quote
Old 01-30-12, 07:55 PM   #4
Bianchigirll 
Bianchi Goddess
 
Bianchigirll's Avatar
 
Join Date: Apr 2009
Location: Camp Hill, PA
Bikes: Too many to list here check my signature.
Posts: 22,436
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 11 Post(s)
is this a New bike or a "New To Me" bike? if it is a brand new bike take it back to the shop and have them look at the screw. Also if you are unfamiliar with tools like a screw extractor I highly recomend you take the bike to a shop first. using a extractor ona 5mm screw is a bit tricky because you need to be very precise with drilling the hole for the extractor to go into.

Did you try a wrench? it is likely a 8mm and I would try a wrench using my left thumb to try and keep the close end of the wrench from slipping off. careful use of visegrips may work too
__________________
Bianchis '87 Sport SX, '90 Proto, '90 Campione del Fausto Giamondi Specialisma Italiano Mundo, '91 Boarala 'cross, '93 Project 3, '86 Volpe, '97 Ti Megatube, , '90 something Vento 603,

Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '09 Motobecane SOLD, '?? Jane Doe (still on the drawing board), '90ish Haro Escape
Bianchigirll is offline   Reply With Quote
Old 01-30-12, 07:56 PM   #5
Bill in Houston
Senior Member
 
Join Date: Nov 2011
Bikes:
Posts: 152
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
put the tool into the hole and smack it with a hammer a couple of times. can help break loose any corrosion or scale on the threads.
Bill in Houston is offline   Reply With Quote
Old 01-30-12, 08:03 PM   #6
spathfinder3408
spathfinder34089
 
spathfinder3408's Avatar
 
Join Date: Jun 2007
Location: Washington State
Bikes: fuji s12s, Schwiin Le Tour, Puegot mtn. bike, Hiawatha crusier
Posts: 200
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
If all else fails grind the head off the screw with grinder on a drill. When the head is off you can simply use a pair of pliers to remove what is left of screw
spathfinder3408 is offline   Reply With Quote
Old 01-30-12, 08:14 PM   #7
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta
Posts: 4,584
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 59 Post(s)
Try applying penetrating oil to the screws and let it sit for a while, maybe overnight, before trying again to remove them. I prefer Kroil but Liquid Wrench is more generally available. As Bill in Houston mentioned impact may help loosen things up and should be done after applying the oil to help it penetrate the threads, then also while trying to remove the fasteners. Mild heating, short of damaging the paint, may also help.
dsbrantjr is offline   Reply With Quote
Old 01-30-12, 08:23 PM   #8
Bill Kapaun
Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
Posts: 9,275
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 49 Post(s)
Are you sure it's not an Allen screw that you're mistaking for a Phillips?

Bill Kapaun is offline   Reply With Quote
Old 01-30-12, 08:26 PM   #9
doctor j
Senior Member
 
Join Date: Aug 2006
Location: Central Louisiana
Bikes:
Posts: 2,877
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Kroil + overnight
doctor j is offline   Reply With Quote
Old 01-30-12, 08:26 PM   #10
cruisintx
Senior Member
 
cruisintx's Avatar
 
Join Date: Jul 2010
Location: Fritch, Tx
Bikes: Felt F80, Trek 730, Raleigh M40
Posts: 274
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
stubborn screw?

Quote:
Originally Posted by NeedARealBike View Post
My bike came with a decent carrier rack when i got it about a couple months ago but the only problem is the top two screws closest to my seat post just wont budge, i've tried using different screw drivers and one of the screws got stripped a little bit. I'd really like to be able to use panniers instead of my messenger bag
I frequently encounter hard to remove screws when dismantling motorcycles. A buddy of mine in Mesa, AZ who is an aircraft mechanic recommended a 50/50 mixture of acetone and anutomatic transmission fluid to help loosen the most difficult ones. The acetone thins the ATF to a point that there is a capillary suction phenomenon that draws the mixture into the threads. ATF, when allowed to sit for a while, will work wonders on rust & corrosion. I typically apply it and let it sit for a day or two before taking a hand-held impact to the problem. I rarely have to give one a second dose of the mixture to get the job done.
cruisintx is offline   Reply With Quote
Old 01-30-12, 08:31 PM   #11
reptilezs
Senior Member
 
Join Date: Sep 2004
Location: boston, ma
Bikes:
Posts: 2,852
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
impact screwdriver. if they are stripped hex i use a "sock it out"
reptilezs is offline   Reply With Quote
Old 01-30-12, 08:32 PM   #12
dsbrantjr
Senior Member
 
dsbrantjr's Avatar
 
Join Date: Sep 2010
Location: Roswell, GA
Bikes: '93 Trek 750, '92 Schwinn Crisscross, '93 Mongoose Alta
Posts: 4,584
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 59 Post(s)
crusinintx's suggestion may have merit, but apply such a mixture with caution as the acetone may strip your paint. Commercial penetrating oils do a good job of creeping into joints ( Kroil = KReeping OIL) if you give them time to work.
dsbrantjr is offline   Reply With Quote
Old 01-30-12, 10:50 PM   #13
Rubato
Senior Member
 
Join Date: Jul 2008
Location: Seattle
Bikes: 91 Trek franken '81 Schwinn Voyager
Posts: 203
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
People find it hard to believe, but left handed twist bits, (reverse the drill!) used in the extractor scenario, will often break out the threaded section of bolts or screws. A right handed bit drives it tighter.
Rubato is offline   Reply With Quote
Old 01-31-12, 08:32 PM   #14
dedhed
SE Wis
 
dedhed's Avatar
 
Join Date: Apr 2005
Location: Milwaukee, WI
Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400
Posts: 2,987
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Quote:
Originally Posted by Rubato View Post
People find it hard to believe, but left handed twist bits, (reverse the drill!) used in the extractor scenario, will often break out the threaded section of bolts or screws. A right handed bit drives it tighter.
+1 My easy out set came with LH drill bits. Often the bolt comes out in the drilling process.
dedhed is offline   Reply With Quote
Old 01-31-12, 11:46 PM   #15
jah5z6
Junior Member
 
Join Date: Dec 2011
Bikes:
Posts: 8
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
if it's stripped, instead of buying a screw extractor (quite pricey) and possibly damaging your bike just take it to your LBS. Labor costs would be minimal, hell, they might just do it for you for free.
jah5z6 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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



All times are GMT -6. The time now is 11:27 PM.