Instructables

Bicycle Chain Gear Whip

Picture of Bicycle Chain Gear Whip
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A chain whip is a bike tool. Here's how to make one.
 
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Step 1: Find the parts

Picture of Find the parts
- You need a sturdy round bar or flat bar. I used a smooth round bar a got from the rails of an old printer. The longer you use the more leverage you'll get. About 12" will work fine.

- Some old bike chain. 12" or so will work fine. I find that the farther you wrap around the gear the better the chain holds.

- A welder or POSSIBLY you could put a hose clamp around the end and the middle to secure it. If using a flat bar, drill and bolt it.

Step 2: Assembly

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Pictured below is a commercially made chain whip. I find that my method works fine too. But 5-10 chain lengths over 3"-4" should work fine for the "secured" portion. Simply leave the rest unattached.

http://bicycletutor.com/replace-cassette-cluster/ shows a chain whip in action.
aaron7575 (author) 4 years ago
To eliminate any confusion, this is a TOOL used to tighten and loosen threaded sprockets on a bicycle. NOT A WEAPON. It is called a chain whip because it has a short section of chain used to grip the sprocket 

http://en.wikibooks.org/wiki/File:Chain_whip_tool.jpg
good point, help explain this to these confused people!
bendog384 years ago
 This isn't exactly a good idea.  Check your local laws and regulations before building this.  You might also need a permit in some areas and it might be against the law to use it in other areas.  I know that if the police catch you with this in Phoenix, Arizona, United States, you WILL go to jail and face a good amount of prison time and possibly a hefty fine.  Whatever you do, USE COMMON SENSE!
 This is really dangerous!!!!!!
rimar20004 years ago
Since the author does not, here is a picture explaining the use of this tool:

http://en.wikibooks.org/wiki/File:Chain_whip_tool.jpg
Frogz5 years ago
for the record, this is a tool used for removing large bolts and such for the ignorants who only think of this as a fun way to remove flesh, it is is ALSO a tool!
EnigmaMax5 years ago
...why?
Camisado6 years ago
This is also a weapon! If you remove the chains, you'll have a club, and you can whip people with this. THAT will definitely HURT. Good job!
LinuxH4x0r6 years ago
Watch out, this could do real damage. I think you need more pictures though