I think the 3mm seals are heavier. Needs stronger springs to force them to keep contact with the rotor housing after passing over the "hump". Heavier = more inertia = more force to move.

Finn

rijakits wrote:

Hi all,

 

would a 3 mm "Tracy-seal" that tappers off to 2 mm have any merrit?

Supposedly the 3 mm don't seal the part the 2 mm do.

So why not have the rotors milled for 3 mm and use seals that have a base/foot of 3 mm - as soon as they leave the rotor they tapper back to 2 mm for better sealing (smaller radius on top? Apex seals are radiused on the sealing side?)

Just speculating as I have no experience with this.

What causes the lesser sealing of the 3 mm? Less flex for the whole seal or the bigger radius? Or....?

 

Thomas Jakits