The evolution of the Super Speedmaster

[Dave S]

Yes on that FUJIMO.

[FUJIMO]

...o.k...good...thx...thought I was lose'n it there for a minute when I dozed off...

[GENE LANHAM]

...thought they were the same driven gear sets, used either rotation, but applied right-hand, the propshaft & bearing support load placement handled it better. No? (straight cut gears)

LH HAD A BIG BULL GEAR—unsupported on prop shaft—-

[FUJIMO]

LH HAD A BIG BULL GEAR—unsupported on prop shaft—-

...exactly gene. the lefties weak point. not as much because of the bull gear itself, but because of its geometry & lack of the ability to support the propshaft well. the right hand unit was therefore spun in the opposite direction, because it could be, via a counter rotation powerhead, with equal durability to a standard rotation unit.

[GENE LANHAM]

...exactly gene. the lefties weak point. not as much because of the bull gear itself, but because of its geometry & lack of the ability to support the propshaft well. the right hand unit was therefore spun in the opposite direction, because it could be, via a counter rotation powerhead, with equal durability to a standard rotation unit.

MC---

Same concept---but rotation can be changed in upper gearcase--(don't forget to reset load/preload in lower)

[FUJIMO]

...yup. pretty much the same geno...any one of them with the straight cut gears... that's the "dry" sump six drive there. see the little screened oil pump in the nose that Weissman helped develop...

[Dave S]

with out pulling it apart.... the #8 ...3.4 lower is a LH///////how did Merc make it last?

[FUJIMO]

with out pulling it apart.... the #8 ...3.4 lower is a LH///////how did Merc make it last?

...still would like to see a photo or two of your 3.4 gearcase in question...

[powerabout]

LH HAD A BIG BULL GEAR—unsupported on prop shaft—-

that design doesnt seem to worry OMC cases?

[Dave S]

OMC ,,,, haaazsszz thick p/[s......

[FUJIMO]

...omc's were not available like the speedmasters were, i don't recall. the "speedmaster" trademarked name was an excellent marketing name & were made available to almost anyone. what general name did omc give those gearcases, like mercury did? were omc guys calling there's speedmasters too? can't remember.

[Mark75H]

No special name like the Merc Speedmaster, Sportmaster or McCulloch "Sportsman" aka Custom

[MN4V]

One OMC lower Unit was called the Clubfoot by the racers.
Not an official name from OMC.
Mark N

[Dave S]

…...HeeHee……. ya could beeatt a SSM case...….with a clubd…...The OMC case was SOOOOO Beefey…...

[Dave S]

This is an SST 140 This is a T4