Originally Posted by Chip-3Door
Originally Posted by Redkop
The straight grooved on the older type APs used to face forward... the newer ones with the curved grooves face backwards.
Ah, didnt realise it was the shape of the groove that made the difference.
Any idea why?
It is the direction of the vanes that are more important, but some people changing from the older type AP forward facing grooves, assumed the curved grooves faced the same way.... not so
