5 bolt crank rings

[MAXTHEROTTI]

hi all are all 5 bolt cranks the same size for bolt on rings?
is it 94mm?
its for a fsa crank pics below if that helps?
and that bash guard has to go :?

rob

 

[stevek]

No they come in different sizes. You need to know your BCD. To determine yours the easy way is to use a ruler to measure the distance between two adjacent holes centre to centre.

Multiplying this dimension by 1.7 will give you the actual BCD for a 5 bolt chainring.

Use 1.4 for 4 bolt chainrings.

 

[jimihendrix]

MTB five arms are usualy either 94 or 110, if you are buying new rings 94 can be listed as CD (compact drive) and 110 listed as ATB.

Nice cranks those

 

[MAXTHEROTTI]

Nice cranks those

thanks they are going to be single speed on my dale thats going to be polished (eventually lol) and red
will go and measure them now

rob