Singlespeed & Fixed Gear - Stupid Questions
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01-09-07, 10:22 PM
I'm getting ready to build up a frame, and I have a few miscellaneous questions I haven't found the answers to online. I'm hoping they're easy to answer. I'm having the headset and fork installed at a shop because I don't have the tools to cut down a steerer tube and I don't trust myself to press in a headset.
- Are the chains on chain whips 1/8 or 3/32?
- Since I'm putting a lockring on, does it even matter if I crank the cog on really tightly?
- Do I need to do any thread preparation before I install the bottom bracket? I threaded the cups in earlier to test it and they went in fine. It's an aluminum bb shell and a Sugino 75 bb.
- Should I put loctite on the bb cups when I install it?
That's all I can think of right now. Thanks for any help.
1. I don't know if there is a standard. However you don't *really* need one for ssfg. (google rotafix)
2. Yes, otherwise your pedalling will tighten the cog, effectively loosening the lockring. Then when you backpedal the cog will pop loose and slam back into the lockring. This is bad for the threads.
3.You should grease the hell out of those threads---even though corrosion may not be an issue it lets you torque the bb better.
4. I would just torque it.
01-09-07, 11:51 PM
1. Unless it's some track-specific rig, 3/32. Ask a shop for old 1/8 chain (or generate some yourself but it takes a while) and convert it, 1/8 works for all purposes.
2. What mander said; loose cogs result in stripped hubs.
3. No sense threading a nice BB like that into a crooked shell, have a shop chase and face the BB shell. $45 or so, but worth it.
4. No, just clean and grease the threads really well. Unless it's an italian thread BB (not sure if they even make the 75's in italian), in which case some blue loctite on the right side wouldn't be the worst idea ever.
01-10-07, 07:29 AM
+1 on LBS BB install.
I use a lockring on my hubs, but you have to get that cog on tight before you put
the lockring on. Its for safety, not for lazy cog intallations.
You can make a 1/8" chain whip out of a 3/32" chain whip, but you do need a chain tool to do it.
01-10-07, 09:42 AM
Here's how to convert a chain whip from 3/32" to 1/8" by yours truly. (http://www.bikeforums.net/showthread.php?t=212385)
01-10-07, 10:17 AM
1. Measure yours and check. How far apart are the inner plates of the chain?
2. A loose cog means a stripped hub. Google "rotafixa" for a good way to get it super-tight.
3.  has a great thread on here about maintaining your sexy track BB. (http://www.bikeforums.net/showthread.php?t=208402&highlight=maintain+sexy+bb) It's basically one of the two most informative threads this board has ever produced (the other being his headset overhaul one). He greases the threads. Some folks use plumber's tape (teflon tape) or anti-seize also.
4. Unnecessary. Phil Wood recommends it for their BB's, but that is a cartridge bearing unit that does not have lockrings.
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