Len Diamond wrote:
> As to the original question of the threading/size of NJS
> components, take a look at the (ot) Campy 1991 catalog which states:
>
> "special threading for hub,bb,crankarms,pedals and headsets must be
> used to guarantee interchangeability with other existing equipment"
> on the Record Keirin NJS approved group page.
>
> It doesn't appear that the NJS stuff has any super special
> qualities, rather it is done to:
> 1- restrict equipment to the local manufacturers
> 2- create an even playing field among competitors
>
> Len Diamond
> Ridgewood, NJ USA
I'd add: 3- insures that quality parts are used
Chuck Schmidt
South Pasadena, CA USA
http://www.velo-retro.com (reprints, t-shirts & timelines)