I just repacked the BB bearings on my old 10-speed with a one-piece crank. After getting it back together, and rotating the crank, I notice a fair amount of runout to the chainwheels. Is this normal (I didn't notice it before)? If so, how much is permissible, and can it be corrected? Does anyone still sell chainwheels for these old relics?

normal for a cheapo crank. you can bend it straight if you like

Thanks for the quick reply, but it turns out that I was suffering from a serious brain-fart! I hadn't gotten the left-side bearing cone properly tightened (the bearing was a little crooked in the cup), so the whole crank was a little off! Duh! All is well, now.

Excuse me, but I'm a novice at this....so this probably won't be the last stupid question that I ask on here.

Do they make a "Bicycle Repairs For Dummies" book? (I should check Amazon.com before I ask, I guess, because they do:
https://www.amazon.com/Repair-Mainten...8656477&sr=1-2)

Actually, while looking on Amazon.com, I ran across this book:
https://www.amazon.com/Glenns-Complet...656581&sr=1-28

As it happens, I already own this one, and I bought it back in the '70's at the same time that I bought the bike I'm working on!