Best way to cut a thick rope lock?
#1
Newbie
Thread Starter
Join Date: Sep 2016
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Best way to cut a thick rope lock?
So I bought a bike on craigslist for $100 and I was skeptical because the guy said there is a rope lock(one of the cheap ones) on the frame of the bike and he can't get it off himself, he said he has the receipt for the bike with the matching serial number, so I checked everything out even called the store he got it at and confirmed it was bought there he told me he forgot the code for the lock.
I have tried bolt cutters to no avail, what other options would I have to get this off? it is one of those cheap rope locks like this https://www.walmart.com/ip/Bell-Spor...-LOCK/17619568
but it is the thicker variety, any advice? I am going to harbor freight for some tools in a few
Weston Drake Sanborn
I have tried bolt cutters to no avail, what other options would I have to get this off? it is one of those cheap rope locks like this https://www.walmart.com/ip/Bell-Spor...-LOCK/17619568
but it is the thicker variety, any advice? I am going to harbor freight for some tools in a few
Weston Drake Sanborn
#3
Senior Member
Join Date: Feb 2004
Location: St Peters, Missouri
Posts: 30,027
Bikes: Catrike 559 I own some others but they don't get ridden very much.
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1498 Post(s)
Liked 454 Times
in
269 Posts
If you clamp the cable in a vise it will cut easily with an ordinary hacksaw.
__________________
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
#5
Senior Member
Join Date: Mar 2010
Location: Seattle, WA
Posts: 21,538
Mentioned: 71 Post(s)
Tagged: 0 Thread(s)
Quoted: 13381 Post(s)
Liked 4,667 Times
in
2,618 Posts
I was going to say hot knife, but that's not a rope. So bolt cutters or hacksaw.
#6
Senior Member
Join Date: Apr 2015
Location: Metro Detroit/AA
Posts: 8,212
Bikes: 2016 Novara Mazama
Mentioned: 63 Post(s)
Tagged: 0 Thread(s)
Quoted: 3634 Post(s)
Liked 71 Times
in
41 Posts
You could do what I did when I did the same thing, and sit with it in front of a TV one night and try every combination, then you have the added bonus of a cheap lock...
But yeah, any cheap cable cutter should take care of that. Dremel tool with a cut off wheel should, too. Worst case, you could probably bash the locking mechanism with a hammer and break it.
But yeah, any cheap cable cutter should take care of that. Dremel tool with a cut off wheel should, too. Worst case, you could probably bash the locking mechanism with a hammer and break it.
#7
Senior Member
Join Date: Jun 2011
Location: Madison, AL
Posts: 693
Bikes: 2010 Felt DA, 2012/6 Felt F5, 2015 Felt AR FRD
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
+1 hacksaw, angle grinder, anything. Otherwise, one combo every 3 seconds gets you a little less than three hours total combo checking time for 0000 - 9999.
#11
Senior Member
Join Date: Sep 2009
Location: Up
Posts: 4,398
Bikes: Masi, Giant TCR, Eisentraut (retired), Jamis Aurora Elite, Zullo, Cannondale, 84 Stumpjumper, Waterford, Tern D8, Bianchi, Gunner Roadie, Serotta, and looking for a Brompton M6R
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 248 Post(s)
Liked 1,363 Times
in
395 Posts
#12
Senior Member
Join Date: Nov 2014
Location: Eugene, Oregon, USA
Posts: 24,968
Mentioned: 202 Post(s)
Tagged: 0 Thread(s)
Quoted: 13033 Post(s)
Liked 1,723 Times
in
1,303 Posts
Cable cutters, on the other hand, have round cutting surfaces that keep the cables bunched together for easier cutting.
I tried to cut a cable lock a while ago with a hacksaw or ordinary wire cutters, and was quite impressed at the resilience.... but I also know that a good cable cutter can make quick work of them. Or, at home, a grinder if a cable cutter is not available.
#13
Senior Member
Join Date: Feb 2006
Location: Sin City, Nevada
Posts: 2,387
Bikes: Catrike 700, Greenspeed GTO trike, , Linear LWB recumbent, Haluzak Horizon SWB recumbent, Balance 450 MTB, Cannondale SM800 Beast of the East
Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 389 Post(s)
Likes: 0
Liked 81 Times
in
62 Posts
If you own a circular saw that uses 7" blades you can use a metal cutting abrasive saw blade to make fast work of the cable. To see what I mean, see here DEWALT 7 in. x 1/8 in. Metal Abrasive Saw Blade Bulk-DW3511 - The Home Depot I've used this to cut lots of different types of metal. The only one that was difficult was a lock and cable that I got at a garage sale. Never heard of the brand of lock that was on the cable but it was extremely hard to cut. You can cut the hasp on most locks in less than a minute but that one took about 10 minutes. Too bad I didn't have the key.
#14
Senior Member
If your not used to using a grinder or cut off wheel, I'd use the hack saw. Use what you know, safely. I also think putting it in a vise was a good idea. Personally, I like this.
Search results for: 'electric cut off'
Search results for: 'electric cut off'

#16
Disco Infiltrator
Join Date: May 2013
Location: Folsom CA
Posts: 11,562
Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem
Mentioned: 66 Post(s)
Tagged: 0 Thread(s)
Quoted: 2239 Post(s)
Liked 898 Times
in
590 Posts
This sounds wrong. 10,000 combinations x 3 seconds = 30,000 seconds = 500 minutes = 8 hours 20 minutes... or 4 hours 10 minutes if you have exactly average luck and the combination is 4999. Am I making too-simple assumptions?
__________________
Genesis 49:16-17
Genesis 49:16-17
#17
Senior Member
Join Date: Feb 2016
Location: 1/2 way between Hatch and T or C, N.M.
Posts: 240
Bikes: '95 Specilized StumpjumperFS
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 81 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Howdy All;
A 1" Cold chisel and a 4 lb. hammer. It's basic and will give you a good work out at the same time.
Oh yea, place the cable or lock on a hard surface or the force of the hammer blow will dissipate into
the softer surface.
Also an excellent way to work off any frustrations or angry thoughts. Some may call it therapy.
hank
A 1" Cold chisel and a 4 lb. hammer. It's basic and will give you a good work out at the same time.
Oh yea, place the cable or lock on a hard surface or the force of the hammer blow will dissipate into
the softer surface.
Also an excellent way to work off any frustrations or angry thoughts. Some may call it therapy.
hank
#18
Disco Infiltrator
Join Date: May 2013
Location: Folsom CA
Posts: 11,562
Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem
Mentioned: 66 Post(s)
Tagged: 0 Thread(s)
Quoted: 2239 Post(s)
Liked 898 Times
in
590 Posts
Not entirely unrelated... my wife recently wanted to bust open a geode and chose from my toolbox a wood chisel that belonged to my grandad.
so long, chisel! Fortunately my grandad bought cheap tools and I have a lot of them, so other than him, it wasn't anything special.

__________________
Genesis 49:16-17
Genesis 49:16-17
#19
Senior Member
Join Date: Feb 2016
Location: 1/2 way between Hatch and T or C, N.M.
Posts: 240
Bikes: '95 Specilized StumpjumperFS
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 81 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Darth Lefty, Howdy;
My most sincere condolences for the chisel . Did she bust the rock open?
hank
My most sincere condolences for the chisel . Did she bust the rock open?
hank
#21
Senior Member
Join Date: Apr 2007
Posts: 4,829
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 347 Post(s)
Liked 131 Times
in
86 Posts
Yea, sorry about that. I'm familiar with that term. But he just wrote rope, not wire rope. I was thinking he might be a non-English speaker and didn't know the term cable or as you point out, wire rope.
#22
Senior Member
Join Date: Jun 2011
Location: Madison, AL
Posts: 693
Bikes: 2010 Felt DA, 2012/6 Felt F5, 2015 Felt AR FRD
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Likes: 0
Liked 1 Time
in
1 Post

also: https://www.instructables.com/id/Unlo...it-cable-lock/
Last edited by KBentley57; 09-06-16 at 03:39 PM. Reason: spelling and link
#23
Disco Infiltrator
Join Date: May 2013
Location: Folsom CA
Posts: 11,562
Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem
Mentioned: 66 Post(s)
Tagged: 0 Thread(s)
Quoted: 2239 Post(s)
Liked 898 Times
in
590 Posts
It was a slip of the calculator on my part
. However, I gave a bike to a friend, with this cable lock, and he actually did set down one evening and try all combinations until he found the one that worked! I asked him how long it took, and he said about 3 hours, so he must have gotten luckier than most. There's also techniques to guessing the most probable combinations (by excluding combos that probably aren't built into most locks, such as XXXX, X,X+1,X+2,X+3 , and so on) that may help.
also: Unlock 4 digit cable lock

also: Unlock 4 digit cable lock

__________________
Genesis 49:16-17
Genesis 49:16-17
#24
Senior Member
... the last wheel may be 'free' and it looks like only 1-6 numbers (or maybe 0-6 numbers) on wheels 1-3 so--e.g., 216 to 343 combinations... or, about 17 minutes at the most?
#25
Disco Infiltrator
Join Date: May 2013
Location: Folsom CA
Posts: 11,562
Bikes: Stormchaser, Paramount, Timberjack, Expert TG, Samba tandem
Mentioned: 66 Post(s)
Tagged: 0 Thread(s)
Quoted: 2239 Post(s)
Liked 898 Times
in
590 Posts
Yes! It has some interesting curlicue stalactites inside but I haven't been able to snap a decent photo of them with my cell phone. I admit if it hadn't worked or it was boring, I'd be more upset about the chisel.
__________________
Genesis 49:16-17
Genesis 49:16-17