[TowerTalk] Sprockets with 2" bore needed

[Jim Lux]

On 4/27/12 8:59 AM, K8RI wrote:
> As the subject line says, I need a source for some relatively heavy duty
> sprockets with a 2" bore.  I spent over an hour and a half stepping
> through Granger's web page but found nothing with a 2" bore.
>
> Outer diameter may be anything larger than the 2" bore up to 4 or 5
> inches, but I'd rather not pay a fortune for them as I need 4.  Granger
> had some in that size range with a 2 3/8" bore for $32 or $35 each. I
> just couldn't find a 2" bore listed.
>
how heavy duty? what pitch chain?  Would bicycle or motorcycle sprockets 
work?  (because they're readily available)..