SHOT show info (slipjoint SNG, perforated Sebenza washers)

[Phillip Dobson]

less contact area can mean less friction. equations showing that friction is independent of contact area are only approximations. in this application it probably doesn't matter at all since the coefficient of friction of the lubricated steel is several orders of magnitude less than that of any conventional type of washer.

I don't doubt that the perforations improve performance. It's not likely because of reduced area. If it was, they could simply use smaller washers. There's something more complex going on. It's more likely that the holes reduce drag similar to the dimples in a golf ball. In any case, I'm tempted to take a drill to some spare washers to see if it makes a difference.

 

[misterjuiceman]

I don't doubt that the perforations improve performance. It's not likely because of reduced area. If it was, they could simply use smaller washers. There's something more complex going on. It's more likely that the holes reduce drag similar to the dimples in a golf ball. In any case, I'm tempted to take a drill to some spare washers to see if it makes a difference.

if the washers are sufficiently lubed, I'd imagine there would be no air in the system. I'd be interested in hearing an official explanation from CRK. bigmark, you should ask Chris Reeve some time

 

[bigmark408]

I don't doubt that the perforations improve performance. It's not likely because of reduced area. If it was, they could simply use smaller washers. There's something more complex going on. It's more likely that the holes reduce drag similar to the dimples in a golf ball. In any case, I'm tempted to take a drill to some spare washers to see if it makes a difference.

The smaller the O.D. on the washers/spacers ,the more lean....think cantilever.

I doubt Chris put the holes there for 4 chits and giggles....when i got my seb back...it had stronger detent 85% or so but yet it seemed to have less drag and opened pritty smooth and fast right out of the box...no break in...new blade, new washer/spacers.