Go Back  Bike Forums > Bike Forums > Singlespeed & Fixed Gear
Reload this Page >

How to make a suicide hub safe?

Search
Notices
Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

How to make a suicide hub safe?

Thread Tools
 
Search this Thread
 
Old 05-03-10, 07:52 PM
  #1  
I Like to Bike
Thread Starter
 
youngandcurious's Avatar
 
Join Date: Apr 2010
Posts: 554
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
How to make a suicide hub safe?

Hey i am planning on making a suicide hub, because i do not have enough money to buy a real track hub. So is there a way to make a safe suicide hub. I have heard of welding/brazing but i want something simpler.
youngandcurious is offline  
Old 05-03-10, 08:11 PM
  #2  
Senior Member
 
the_don's Avatar
 
Join Date: May 2008
Location: Tokyo
Posts: 1,938
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
super glue on the threads is the common method. But safe it is not.
the_don is offline  
Old 05-03-10, 08:14 PM
  #3  
Fresh Garbage
 
hairnet's Avatar
 
Join Date: Apr 2009
Location: Los Angeles
Posts: 13,190

Bikes: N+1

Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 352 Post(s)
Liked 27 Times in 18 Posts
Originally Posted by youngandcurious
welding
assuming steel cog and aluminum hub, that's a no go. Maybe rotafix your cog and make good use of front and rear brakes, or stick to a SS freewheel until you get a track hub

Last edited by hairnet; 05-03-10 at 09:29 PM.
hairnet is offline  
Old 05-03-10, 08:20 PM
  #4  
Senior Member
 
NinetiesKid's Avatar
 
Join Date: Jul 2008
Location: Atlanta
Posts: 330
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
swap the hub with a track hub

kachow!!!
NinetiesKid is offline  
Old 05-03-10, 08:21 PM
  #5  
I Like to Bike
Thread Starter
 
youngandcurious's Avatar
 
Join Date: Apr 2010
Posts: 554
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by NinetiesKid
swap the hub with a track hub

kachow!!!
can i have yours?
youngandcurious is offline  
Old 05-03-10, 08:26 PM
  #6  
Sir Fallalot
 
wroomwroomoops's Avatar
 
Join Date: Jul 2006
Posts: 5,286
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Likes: 0
Liked 13 Times in 11 Posts
Originally Posted by youngandcurious
Hey i am planning on making a suicide hub, because i do not have enough money to buy a real track hub. So is there a way to make a safe suicide hub. I have heard of welding/brazing but i want something simpler.
Best thing is to rotafixa the cog on the hub and add a bottom bracket lockring - but most importantly, use a rear brake for braking instead of backpedaling. This is, in a nutshell, what Sheldon Brown recommends.
wroomwroomoops is offline  
Old 05-03-10, 08:39 PM
  #7  
Senior Member
 
Join Date: Mar 2010
Posts: 52
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
If you use brakes, you're fine. If you don't use brakes, rotafix the rear cog on and possibly use some JB Weld. If you're planning on going down a lot of hills, use brakes.
HoudiniSplicer is offline  
Old 05-03-10, 08:49 PM
  #8  
Senior Member
 
cnnrmccloskey's Avatar
 
Join Date: May 2009
Location: Portland Oregon
Posts: 744

Bikes: '82 Giante super challange, 70 Gitane Tour de France, GT Gutterball

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Loctite red or JB Coldweld then rotofix and a back brake
cnnrmccloskey is offline  
Old 05-03-10, 09:17 PM
  #9  
Elitist
 
carleton's Avatar
 
Join Date: Jul 2005
Location: Atlanta, GA
Posts: 15,965
Mentioned: 88 Post(s)
Tagged: 0 Thread(s)
Quoted: 1386 Post(s)
Liked 92 Times in 77 Posts
Originally Posted by youngandcurious
Hey i am planning on making a suicide hub, because i do not have enough money to buy a real track hub. So is there a way to make a safe suicide hub. I have heard of welding/brazing but i want something simpler.
If you really want to ride fixed THAT badly, then maybe just put your energies into getting a used track wheel and ride safely?
carleton is offline  
Old 05-03-10, 09:19 PM
  #10  
Senior Member
 
Pooptet's Avatar
 
Join Date: Jul 2009
Location: North California
Posts: 299

Bikes: Windosr Clockwork

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The title is contradicting
Pooptet is offline  
Old 05-03-10, 09:27 PM
  #11  
You gonna eat that?
 
Doohickie's Avatar
 
Join Date: Sep 2008
Location: Fort Worth, Texas Church of Hopeful Uncertainty
Posts: 14,715

Bikes: 1966 Raleigh DL-1 Tourist, 1973 Schwinn Varsity, 1983 Raleigh Marathon, 1994 Nishiki Sport XRS

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 164 Post(s)
Liked 67 Times in 44 Posts
Originally Posted by carleton
If you really want to ride fixed THAT badly, then maybe just put your energies into getting a used track wheel and ride safely?
I actually have the parts to do a suicide hub on an old Schwinn when I get around to it. I picked up the parts for next to nothing at a swap meet. I figure it will be a learning experience. When I see how it goes together I will JB Weld it but also I will see if there is any way to put a set screw in it. I'm a mechanical engineer; I never depend on adhesives for critical joints.
__________________
I stop for people / whose right of way I honor / but not for no one.


Originally Posted by bragi "However, it's never a good idea to overgeneralize."
Doohickie is offline  
Old 05-03-10, 09:35 PM
  #12  
Fresh Garbage
 
hairnet's Avatar
 
Join Date: Apr 2009
Location: Los Angeles
Posts: 13,190

Bikes: N+1

Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 352 Post(s)
Liked 27 Times in 18 Posts
Originally Posted by Doohickie
I will see if there is any way to put a set screw in it
Curious, how do you plan to do that? I don't know anything about how hubs are made, do you think there's enough material to drill and tap?
hairnet is offline  
Old 05-03-10, 10:15 PM
  #13  
You gonna eat that?
 
Doohickie's Avatar
 
Join Date: Sep 2008
Location: Fort Worth, Texas Church of Hopeful Uncertainty
Posts: 14,715

Bikes: 1966 Raleigh DL-1 Tourist, 1973 Schwinn Varsity, 1983 Raleigh Marathon, 1994 Nishiki Sport XRS

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 164 Post(s)
Liked 67 Times in 44 Posts
No. I haven't looked at it yet. I'm thinking of a teeny little set screw... the smallest I can get... and maybe drilling through the threads between the cog and hub (parallel to the axle), then just screwing the screw in without tapping, and just locktiting in place. I see the wheel as pretty much disposable; I got the whole bike for $10. If I decide I like FG then I'll get a proper wheel with a track hub. This is kind of a try-before-you-buy/learning experience project.
__________________
I stop for people / whose right of way I honor / but not for no one.


Originally Posted by bragi "However, it's never a good idea to overgeneralize."
Doohickie is offline  
Old 05-03-10, 10:45 PM
  #14  
.
 
blickblocks's Avatar
 
Join Date: Sep 2006
Posts: 3,860
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
The point of the suicide hub is that you don't have to do it yourself. Instead of cutting yourself with a razor "across the street" or "down the street", you can just let your cog spin off while skidding down a hill. I swear getting hit by a semi is less painful than blood letting, and looks wicked cool.

Use a brake.
__________________
https://blicksbags.com/
blickblocks is offline  
Old 05-03-10, 10:49 PM
  #15  
GONE~
 
Join Date: Apr 2010
Posts: 6,747
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Maybe put a bottom bracket lockring over the cog? It probably won't help much since they thread on in the same direction.
Squirrelli is offline  
Old 05-03-10, 10:50 PM
  #16  
Turgid Member
 
TofuPowered's Avatar
 
Join Date: Dec 2008
Location: Rock Hill, SC
Posts: 171

Bikes: Salsa Casseroll, Soma Rush, Fuji Tahoe 29er Pro

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
the safest way to suicide a hub is not to.
TofuPowered is offline  
Old 05-03-10, 10:54 PM
  #17  
GONE~
 
Join Date: Apr 2010
Posts: 6,747
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by TofuPowered
the safest way to suicide a hub is not to.
Agreed, I'd rather pay the extra money to get a proper track hub.
You can't ride when you are dead.
Squirrelli is offline  
Old 05-03-10, 11:41 PM
  #18  
Senior Member
 
Join Date: Apr 2008
Posts: 120
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Suicide up is only OK SS, nogo on FG.
Seriously, if you really want to trim it up, go SS until you can afford a new hub.
Rob Glatfelter is offline  
Old 05-04-10, 02:48 AM
  #19  
Sir Fallalot
 
wroomwroomoops's Avatar
 
Join Date: Jul 2006
Posts: 5,286
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Likes: 0
Liked 13 Times in 11 Posts
Aww... will the BS flood ever stop? Why don't you people actually think a bit with your heads instead of going with the herd and parroting each other?


"Suicide hub"

Originally Posted by Sheldon Brown
A rather alarmist and silly name for a freewheel hub used as a fixed-gear hub.
Any standard-thread freewheel type hub will also accept a fixed-gear ("track ") sprocket . This is a common technique for converting an older bike to fixed gear on the cheap.

Despite the silly name, this is no more dangerous than using a freewheel, as long as you keep front and rear hand brakes installed.
wroomwroomoops is offline  
Old 05-04-10, 02:50 AM
  #20  
Sir Fallalot
 
wroomwroomoops's Avatar
 
Join Date: Jul 2006
Posts: 5,286
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Likes: 0
Liked 13 Times in 11 Posts
And if you ask "Who the heck is Sheldon Brown anyway?" - well, he was only the greatest advocate for fixed gear riding ever to walk the earth (and pedal thereon).
wroomwroomoops is offline  
Old 05-04-10, 06:52 AM
  #21  
master of bottom licks
 
BassNotBass's Avatar
 
Join Date: Apr 2008
Location: Lou-evil, Canned-Yucky USA
Posts: 2,210
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 111 Post(s)
Likes: 0
Liked 2 Times in 2 Posts
A so-called "suicide hub" can be perfectly safe for street riding. The real danger comes from not using brakes regardless of whether "suicide hubs" OR track hubs are fitted.
BassNotBass is offline  
Old 05-04-10, 09:11 AM
  #22  
Senior Member
 
conbon's Avatar
 
Join Date: May 2010
Location: STL
Posts: 412

Bikes: trek 560, specialized langster, specialized stumpjumper, felt bmx, GT pro series

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
My buddy was running suicide style without a lockring for a while and somehow he didn't die, then i stomped on his cranks backwards to show him what would happen. After seeing the cog backing itself off, he wanted to fix it. A bottom bracket lockring and some red loctite got it working fine, no problems since then.

-Connor
conbon is offline  
Old 05-04-10, 09:33 AM
  #23  
Senior Member
 
Join Date: Aug 2008
Posts: 1,025
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by conbon
My buddy was running suicide style without a lockring for a while and somehow he didn't die, then i stomped on his cranks backwards to show him what would happen. After seeing the cog backing itself off, he wanted to fix it. A bottom bracket lockring and some red loctite got it working fine, no problems since then.

-Connor
Putting a threaded lockring on is a waste of time unless it is counter-threaded . I don't know about you, but I don't really feel like some red locktight is strong enough to withstand 200lbs of body weight.

Last edited by clink83; 05-04-10 at 09:38 AM.
clink83 is offline  
Old 05-04-10, 09:44 AM
  #24  
You gonna eat that?
 
Doohickie's Avatar
 
Join Date: Sep 2008
Location: Fort Worth, Texas Church of Hopeful Uncertainty
Posts: 14,715

Bikes: 1966 Raleigh DL-1 Tourist, 1973 Schwinn Varsity, 1983 Raleigh Marathon, 1994 Nishiki Sport XRS

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 164 Post(s)
Liked 67 Times in 44 Posts
In my case I plan on running both brakes.
__________________
I stop for people / whose right of way I honor / but not for no one.


Originally Posted by bragi "However, it's never a good idea to overgeneralize."
Doohickie is offline  
Old 05-04-10, 09:49 AM
  #25  
Team Beer
 
Cynikal's Avatar
 
Join Date: Apr 2004
Location: Sacramento CA
Posts: 6,339

Bikes: Too Many

Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 114 Post(s)
Liked 159 Times in 104 Posts
The OP has not commented on using brakes, I wish he would. Again, if you didn't hear it, it is only suicide if you run brakeless.
__________________
I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC
Cynikal is offline  


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.