Old 5 arm XT(m730)chainring question

[Grannygrinder]

I'm after some help. I've got some old Xt(m730)cranks,i've put an ad in the wanted section as i need outer and middle rings. I've asked for 104mm bcd 5 arm rings,is this correct? I have measured them and that does appear to be the dimension,i'd just like to be 100%.
Thanks in advance.
Mike

 

[dbmtb]

M730 is BCD110 like road compact.

I've got some NOS M735 chainrings if you are interested....

But there are plenty of people selling more durable stuff, to be honest.

 

[elite504]

M730 is BCD110 like road compact.

I've got some NOS M735 chainrings if you are interested....

But there are plenty of people selling more durable stuff, to be honest.

Appreciate what you've done, measing to opposite holes, but its 120mm. If you draw a circle that goes through all 5 holes, it will be 110mm in diameter, that is the 'circle diameter' , that bolts are 'pitched' on, hence Pitch Circle Diameter (PCD), or Bolt Circle Diameter (BCD).

 

[Grannygrinder]

Ah..

So I need 110 bcd rings then?