It is an older style shimano square taper BB.

I think this is a slightly different question - it seems to be "If I can go X mph on bike A, and switch to bike B, what will my speed be?"

@neilfein I mean 9x3. The size of the cogs is unlikely to matter unless you are also changing a derailleur.

If you forget the string, an old spoke that still has the hub head on it works great as a hook to fish the chain out of the bottle.

+ 1 Great answer - deserve another up vote for 'schmutz'. That's my new word of the week.

I strongly advocate NEVER using gasoline as a degreaser. It has high 'flash' flammability as well as high contact and inhalation toxicity. The risk isn't worth it. Spend the extra dollar on a nice citrus degreaser.

You also need to remember that every time you drop it, smack it into the door, toss it at the bed and miss, it gets 'dinged'. Over time all of these little collisions add up.

"Degrade" does not mean the same thing as "Decompose". Most man made materials take decades to decompose (break down into their component elements), but only a few months or years to degrade (become significantly weaker or structurally deficient).

+ 1 for the 'squished' rear dropout comment. It's been a long time since I have looked at a cheep frame and saw that.

@zigdon - some do and some don't. In the US at least there is a standard for distance and angle for reflective visibility and many rear lights don't meet them, especially the ones sold in some large department stores. For instance the following light at WalMart doesn't meet the standard in many US jurisdictions: walmart.com/ip/Bell-Sports-Night-Trail-Light-Set/14003649