43 / 44 / 45 T Chain Ring

[Orange777]

Hi ........... noob question alert.............

Other than number of teeth, what are the differences with 43/44/45/46 T chain rings? I am guessing it is torque related?

If you swap them, what else do you need to swap?

Have tried a search on this but it brings up mainly for sale stuff.....

CHEERS!!!

[stidds]

The lower the number of teeth the easier it will be to pedal, but you will also have a lower top speed too.

The thing you have to watch is that with more teeth on the chainring you will require more chain (or less chain with less teeth on the chainring), which means that you may have to add or remove chain links.

[Orange777]

The lower the number of teeth the easier it will be to pedal, but you will also have a lower top speed too.

The thing you have to watch is that with more teeth on the chainring you will require more chain (or less chain with less teeth on the chainring), which means that you may have to add or remove chain links.

T H A N K   Y O U!

I am hunting a few bits down and it seems mission impossible on 43T!! I wondered if it changed the rear chain wheel.

Really helped me there! Cheers... I wont be riding this at speed unless am being chased by thieves!

[dp and Chopper Dude]

I'm having a similar problem. I'm undecided (havent got a clue!) what freewheel to go for. I'm getting a selection of chainrings & I'm going to have a play once my bike has been built. I never thought about chain length though 

[Jaypeg]

Owner of a bike shop I know swears that the best way to work out what chain wheel you need is to divide the number of teeth by 2.77

[Orange777]

That sort of seem right

43 /2.77 = 15.52 and I have a 16 tooth freewheel on at the moment...

[rooski]

20 inch race bike = 43/44/45 with a 16t freewheel,good for general riding as well

Owner of a bike shop I know swears that the best way to work out what chain wheel you need is to divide the number of teeth by 2.77

43/16=2.68

[monkian]

This might be of use:
http://www.bikeguide.org/guides/drive/gearchart.php

[Orange777]

Very helpful advice as usual!! Thanks all...

[TwoBobRob]

Standard for freestylers and some racers was always 44:16. A good number of racers I knew would run 45 up front, just because they were fit and strong enough to pull that gearing to flat out and some tracks demanded it. This also goes hand in hand with crank length - longer arms mean greater leverage of course, so you could run a taller gear. Again lots of racers used 180mm cranks whilst the majority of freestylers used (and still do) 175mm.

At the end of the day, if you're going racing you'll soon work out what suits you and the tracks you ride.

By the way, even though it's only one tooth in either direction, 43 feels markedly different to 45.

[hunterdubber]

43/16

Spin to win 

[Orange777]

Thanks for that Rob..... Never even thought about crank length!!

Just been reading this...about different set ups!

Lot more complex than it all looks!!

http://www.bmxmadness.com/bmx_gear_ratio_sizing_charts.htm

[TwoBobRob]

 

Yeah, like most things it can get bloody complicated.  Don't worry about it, start at 44:16 on 175s and see how you go, it won't be far out.

[Jaypeg]

20 inch race bike = 43/44/45 with a 16t freewheel,good for general riding as well

Owner of a bike shop I know swears that the best way to work out what chain wheel you need is to divide the number of teeth by 2.77

43/16=2.68

Maybe should have giving an example and got my components right 44 / 2.77 = 15.8 ( round up) = 16 th freewheel

[dancetothedrummersbeat]

for sunny day cruising round the roads on by bikes I use 16 tooth freewheel with 41/42 chainring. Nice and easy gearing if you want to roll about.