An alternative way to remove a crank arm?
10-04-12, 02:03 PM
#1
Junior Member
Thread Starter
Join Date: Jul 2010
Location: Oxford
Posts: 24
Bikes: Cheap-ass road bike...
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
An alternative way to remove a crank arm?
Hello,
It seems I'm not having much luck with updating my bike... I noticed last night that a part of the thread to the left crank arm is trashed and consequently I can't screw in the crank removal tool... Is there another way of removing a crank arm?
Thanks,
Uplah
It seems I'm not having much luck with updating my bike... I noticed last night that a part of the thread to the left crank arm is trashed and consequently I can't screw in the crank removal tool... Is there another way of removing a crank arm?
Thanks,
Uplah
10-04-12, 02:10 PM
#2
It's MY mountain
Join Date: Sep 2006
Location: Mt.Diablo
Posts: 9,952
Bikes: Klein, Merckx, Trek
Mentioned: 70 Post(s)
Tagged: 0 Thread(s)
Quoted: 4192 Post(s)
Liked 2,795 Times
in
1,523 Posts
Are you willing to sacrifice the crank?
10-04-12, 02:11 PM
#3
Banned
Delegate the problem to a Bike shop and let them do the work..
they will have a lot more tools and practice at this.
Have an automotive fan belt pulley remover?
they will have a lot more tools and practice at this.
Have an automotive fan belt pulley remover?
10-04-12, 02:18 PM
#4
Mechanic/Tourist
From FBinNY, multiple previous posts:
It's childlishly easy to remove a crank with a stripped puller thread.
There's the free way that works about half the time. Replace the spindle bolt, but leave it backed off about 1mm. Ride the bike up a steep embankment in a high gear so you really have to stand on the pedal. If you hear a "crack" the crank has popped free, so stop riding immediately, and you're good to go after walking back to the shop.
Or for a few bucks at a good commercial hardware store you can buy a pair of Jacobs Chuck removal wedges. (see picture) These are thin pieces with shallow tapers, and tapping the pair in from both sides will push a crank off while remaining parallel. Many shops have these, and will do the job for a nominal fee.
BTW- Chuck wedges work so well, that there's no reason not to continue using the crank arm.
__________________
fb
It's childlishly easy to remove a crank with a stripped puller thread.
There's the free way that works about half the time. Replace the spindle bolt, but leave it backed off about 1mm. Ride the bike up a steep embankment in a high gear so you really have to stand on the pedal. If you hear a "crack" the crank has popped free, so stop riding immediately, and you're good to go after walking back to the shop.
Or for a few bucks at a good commercial hardware store you can buy a pair of Jacobs Chuck removal wedges. (see picture) These are thin pieces with shallow tapers, and tapping the pair in from both sides will push a crank off while remaining parallel. Many shops have these, and will do the job for a nominal fee.
BTW- Chuck wedges work so well, that there's no reason not to continue using the crank arm.
__________________
fb
10-04-12, 07:46 PM
#5
Junior Member
Thread Starter
Join Date: Jul 2010
Location: Oxford
Posts: 24
Bikes: Cheap-ass road bike...
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
10-05-12, 07:12 PM
#6
Junior Member
Thread Starter
Join Date: Jul 2010
Location: Oxford
Posts: 24
Bikes: Cheap-ass road bike...
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
From FBinNY, multiple previous posts:
It's childlishly easy to remove a crank with a stripped puller thread.
There's the free way that works about half the time. Replace the spindle bolt, but leave it backed off about 1mm. Ride the bike up a steep embankment in a high gear so you really have to stand on the pedal. If you hear a "crack" the crank has popped free, so stop riding immediately, and you're good to go after walking back to the shop.
Or for a few bucks at a good commercial hardware store you can buy a pair of Jacobs Chuck removal wedges. (see picture) These are thin pieces with shallow tapers, and tapping the pair in from both sides will push a crank off while remaining parallel. Many shops have these, and will do the job for a nominal fee.
BTW- Chuck wedges work so well, that there's no reason not to continue using the crank arm.
__________________
fb
It's childlishly easy to remove a crank with a stripped puller thread.
There's the free way that works about half the time. Replace the spindle bolt, but leave it backed off about 1mm. Ride the bike up a steep embankment in a high gear so you really have to stand on the pedal. If you hear a "crack" the crank has popped free, so stop riding immediately, and you're good to go after walking back to the shop.
Or for a few bucks at a good commercial hardware store you can buy a pair of Jacobs Chuck removal wedges. (see picture) These are thin pieces with shallow tapers, and tapping the pair in from both sides will push a crank off while remaining parallel. Many shops have these, and will do the job for a nominal fee.
BTW- Chuck wedges work so well, that there's no reason not to continue using the crank arm.
__________________
fb
I am kinda trying the first suggestions, however my chainset and chain are in poor shape (https://www.bikeforums.net/showthread...ip-due-to-wear)...
Uplah
Thread
Thread Starter
Forum
Replies
Last Post
vins0010
Bicycle Mechanics
18
12-31-17 11:02 PM
