It will work but your pedaling will be really smooth... basically it will be easy to pedal.... but you also wont get anywhere fast though plus it will look weird here are the specks for gear to gear ratio
SPROCKET
FREEWHEEL & CASSETTE COG or
CASSETTE HUB
22
8 cassette hub
23
8 cassette hub
25
9 cassette hub
28
10 cassette hub
30
11 cassette hub
33
12 freewheel/cog
36
13 freewheel/cog
39
14 freewheel/cog
41
15 freewheel
44
16 freewheel
Yes
yes
Yes, it will work. If it'll be the best for you or not is another question.
they don't make a 9 tooth freewheel they make a 9 tooth cassette and its better to get a 8 tooth as you can see heres a gear ratio for you to look atPopular Gear CombosSprocketF/W or Cassette2282382592810301133123613391441154416
"Needed" isn't a suitable word. Any tooth count will work, and only rider experience can say which will work best for him/her. 20T is fairly small, so I'd recommend a small freewheel too, to get any kind of speed out of the bike.
Of course it will, but in my opinion freewheels arent the best
no it will be to easy to pedal
That really depends on what you mean by "work". Will the bike be rideable - as long as you have the chain length right, yes. Will the bike be a nice compromise between top speed and quick off the line - only you can tell, people want different things from their bikes.
Any size will work. What'll work best depends on what you want it for. Higher top speed - go for a big sprocket. Quicker off the start - go for a smaller sprocket.
Depends on if it's the older freewheel type rear hub or the newer cassette style rearl hub. Cassette hubs can take 9 tooth I believe, while the smallest freewheel is 15 or so.Depends on the hub. A cassette hub will go down to 9T. Standard freewheel is 16T, but there are a few that go to 14 and 15.they now make 8 tooth cassette hubs and 22 tooth sprockets to work for them. so 22 is the smallest out there so far
You must have replaced a part. Either the Driver, Sprocket, or backrim. Your ratio isn't set right. with a 16 tooth driver you have to have a 32 tooth sprocket (i think. it might be 36) with a 9 tooth driver, you have to have a 25 tooth sprocket. i don't know how many spokes you need in your rim for either one though. go to a local bike shop and ask about it. sorry i couldn't help much. i havent messed with bikes in a while.
22 or 23 tooth sprocket will work. 23 will give you more top end speed for cranking at those huge gaps, while 22 will give you easier acceleration.