Freewheel to fixed with BB lockring.
02-25-09, 03:27 PM
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Freewheel to fixed with BB lockring.
So a LBS mechanic installed a new cog on the freewheel side of my hub, with a bottom bracket lockring to make it fixed, he re-assured me that its completly safe and hes done it before, has anyone else had experience with this kind of thing? and is it definatly safe?
02-25-09, 03:29 PM
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Search and you will be rewarded with a plethora of threads asking this exact thing. Short answers in order that you asked the questions: Yes. No.
02-25-09, 04:16 PM
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I've actually seen more track lockrings failing than suicide hub/bb lockring.
02-25-09, 04:21 PM
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02-25-09, 04:34 PM
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I think it should be safe if there's some locktite on the cog and lockring. It's not like the tension would take off the lockring. It sounds fine to me as long as you frequently tighten down the lockring and run a brake.
02-25-09, 04:49 PM
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thanks for everyones input
there's locktite on the cog and lockring, ill be sure to tighten it often
there's locktite on the cog and lockring, ill be sure to tighten it often
02-25-09, 05:37 PM
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If there is locktite on the cog and lockring, you won't have to tighten it. My beater has a suicide hub done this way. I used red locktite. I don't think I could get the lockring and cog off if I tried. Still, I run two brakes just to be sure. I do skid on it though. No problems yet and its been set-up like this over a year now.
02-25-09, 06:35 PM
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If there is locktite on the cog and lockring, you won't have to tighten it. My beater has a suicide hub done this way. I used red locktite. I don't think I could get the lockring and cog off if I tried. Still, I run two brakes just to be sure. I do skid on it though. No problems yet and its been set-up like this over a year now.
02-25-09, 06:40 PM
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if you have locktite i wouldn't try tightening it after that since you would just break the locktite seal bond thing. Use the rotofix method to get the cog on and off, you can get it really tight and it's free!
02-25-09, 07:00 PM
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The first fixed gear i ever rode had the cog on with red loctite because my friend stripped the hub. Granted I didn't skid or anything just rode around a parking lot. He's been riding on it for 2 years, skids constantly and rarely uses his brake and hasn't had a problem. At least he's got that brake for when it fails.
02-25-09, 07:10 PM
#15
Bicycle Repair Man !!!
My road bike has about 8,000 km on a suicide hub that has seen one cog change... to remove the first cog I had to torch the hub (I used 272 loctite) and it took three of us to get it off.
If there is a downside this is it... you can ruin the hub threads during the removal process.
This is really important... after installing a cog in this manner you must let the loctite set for 24 hours before you ride the bike and you need to run and use a brake.
There are lots of fg bike here that run suicide hubs and I have yet to have anyone I helped tell me that their hub failed... I too see more failures with track hubs that were not properly set up.
Ideally... a proper track hub / wheel is the way to go and if you want a fixed / fixed setup get a double stepped hub.
If there is a downside this is it... you can ruin the hub threads during the removal process.
This is really important... after installing a cog in this manner you must let the loctite set for 24 hours before you ride the bike and you need to run and use a brake.
There are lots of fg bike here that run suicide hubs and I have yet to have anyone I helped tell me that their hub failed... I too see more failures with track hubs that were not properly set up.
Ideally... a proper track hub / wheel is the way to go and if you want a fixed / fixed setup get a double stepped hub.
02-25-09, 08:59 PM
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mt guess is you don't see a lot of suicide hub failures because
a) it's a suicide hub, the name implies the danger so people take it seriously unlike the new guys that may put the cog and lockring on themselves
b) if someone's suicide hub went suicidal on them, i'd imagine they wouldn't go bragging about how they weren't running a brake on a suicide hub or whatever
a) it's a suicide hub, the name implies the danger so people take it seriously unlike the new guys that may put the cog and lockring on themselves
b) if someone's suicide hub went suicidal on them, i'd imagine they wouldn't go bragging about how they weren't running a brake on a suicide hub or whatever
02-26-09, 03:27 AM
#18
Bicycle Repair Man !!!
You need red loctite for suicide hubs... it releases with heat.
Blue loctite is only good for lower stress applications and requires mechanical force to release... much like the mechanical force that can be generated while back braking on a fixed gear.
Blue loctite is only good for lower stress applications and requires mechanical force to release... much like the mechanical force that can be generated while back braking on a fixed gear.
02-26-09, 05:32 AM
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Your mechanic is not your friend if he didn't explain at least why your type of setup is non-ideal. I hope you're running brakes at the very least. If it's red-loctited it on, it's probably not going anywhere.
02-26-09, 06:00 AM
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If there is locktite on the cog and lockring, you won't have to tighten it. My beater has a suicide hub done this way. I used red locktite. I don't think I could get the lockring and cog off if I tried. Still, I run two brakes just to be sure. I do skid on it though. No problems yet and its been set-up like this over a year now.
