depending on the state of your sprockets you could also consider going 520, a size run on high performance moderns and also used on swing arm singles so available off the shelf.
My race A10 is running 520 plain chain -so even less energy loss than a 530
I don't understand.
1 What do you mean by 'depending on the state of your sprockets"?
2 Are you running 520 (5/8 x 1/4) on the rear? Is that because it is more efficient than the 530? Are sprockets easy to obtain?
For the majority of riders who only do lowish mileage, is there any real advantage for using O ring?
If anyone has used standard O ring, can they post if it was a straight fit or if they have any problems?
520 15.88mm 6.35mm 10.16mm 5/8 x 1/4
525 15.88mm 7.85mm 10.16mm 5/8 x 5/16
530 15.88mm 9.53mm 10.16mm 5/8 x 3/8
ATB
Keith