Chain 630vs530

Good morning
Got a chain question, is 530 or 630 the larger chain?
Thanks

630 is larger. I installed the 530 and it just makes sence to install the 530. Roy

530 has more pins in a section.i think its 5/8 inch to a 630 being 3/4.if you change keep in mind sprockets will need more teeth to give same ratio.do a search i think old man rock posted a conversion scale. very helpful.

Thanks!
My Drive sprocket is worn, rear sprocket and chain are like new, thinking PO had swapped rear sprocket and chain but not drive sprocket:( , anyway it is a large chain and I had ordered a "518" series drive sprocket ( 630) but it is thinner than the one on the bike, Noticed drive sprocket on bike has "521" embossed in it. I just orderd the "521"
( 630)series drive sprocket from Z1 Enterp., hoping that one is as thick as the ( 521) one on the bike, Hope that makes sense?? I am assuming the "521" is the thicker sprocket in the 630 size..?
Wheeeww!
Thanks

Conversion formula is as follows...

630 Pitch:
15 tooth OEM CC sprocket & 35 tooth rear for a ratio of 2.333... 35/15 = 2.3333

530 Pitch:
(15 / 5) * 6 = 18 tooth new 530 Front sprocket
(35 / 5) * 6 = 42 tooth new 530 Rear sprocket
42/18 = 2.3333

If you want to change your ratios for increased lower or top end speeds.... here's a chart I found that comes in handy....

ed spangler wrote:

...ordered a "518" series drive sprocket ( 630) but it is thinner than the one on the bike, Noticed drive sprocket on bike has "521" embossed in it. I just orderd the "521"
( 630)series drive sprocket from Z1 Enterp., hoping that one is as thick as the ( 521) one on the bike, Hope that makes sense?? I am assuming the "521" is the thicker sprocket in the 630 size...

518 requires spacer (shown on listing)
521 doesn't (thicker mid-section)

www.z1enterprises.com/detail.aspx?ID=1809

www.z1enterprises.com/detail.aspx?ID=226

Perhaps only need whichever spacer is applicable to whatever model bike is involved.

Good Fortune!

Thanks!!
I appreciate the help!!
ED