Gearcase Machining 101

[machinedcomp]

I thought it might be interesting to provide some pictures of the machining process of our new Gearcase available for D-mod and Pro classes.

Material: 3 x 5 x 11 6061 Billet Aluminum.
1st Op. Machine profile, top Pinion bearing and seal and snap ring pocket.
also put mounting hole pattern (Metric Konig Pattern)

2nd Op. Machine Hatchet Profile, lower pinion shaft Bearing pockets.
3 dimensionally machine all bearing surfaces for prop Shaft.

3rd Op. Machine the left and Right sides for clearance to install mounting
bolts

The only thing left is to add the Oil over flow hole and the water
inlet. Next we will start on the skeg half.

[brian]

wow

Made in the USA!

Thank you for building these units!

I assume they will have metric propshafts??? It would be way cool to offer 55h and metric shafts. I hate the shims.

Looks like they are getting close to delivery. When can we start writing checks?

[RICK BIRD]

lee

very cool. do you think you will build some for the fe class.

nice to see this lee very nice

[machinedcomp]

Gearcase

The prop shaft size is 15mm, to change to 11/16 would not be practical, I would have to change the bearing arrangement. I use a INA combination cylindrical and thrust bearing so the size choices are limited. shims are no problem we have those in stock. I prefer to use a shim, if you shear a pin it will destroy the shim before it galls the inside of the prop. It makes it much easier to remove. This run of 12 cases are already sold but in 3 weeks we will start another run. Rick I try to avoid the OMC 3 cylinder, too much torque and vibration.

[RICK BIRD]

The prop shaft size is 15mm, to change to 11/16 would not be practical, I would have to change the bearing arrangement. I use a INA combination cylindrical and thrust bearing so the size choices are limited. shims are no problem we have those in stock. I prefer to use a shim, if you shear a pin it will destroy the shim before it galls the inside of the prop. It makes it much easier to remove. This run of 12 cases are already sold but in 3 weeks we will start another run. Rick I try to avoid the OMC 3 cylinder, too much torque and vibration.

LEE i understand, but please keep us in mind. LEEyou know i would run anything you make.

[Joe Faster]

Your gearcase posting is very impressive. You do great work. Do you give senior discounts on the products you sell? Hope to meet you someday but Oregon is a long way from Newberg. Good luck this year.

[David Weaver]

Bolt Pattern

Lee,

Will your unit match-up to a Konig style bolt pattern?

Thanks, they look fantastic.

David

[Lights]

Lee what kind of gear ratio's are available? And what is the cost of a unit? Did you make the gears? Or our they from Rossi, Konny????? They sure look nice.

[seanp3]

Lee's response from the thread "Lower Units"


"I also make Hatchet style gearcase available in 14:14,
14:15, 12:15, 11:15 ratio's. Its Machined form solid Billet Aluminum. All the machining is performed on a CNC machining center so the profile is perfect."

[PETEG]

I Am Also Interested In Knowing Who Makes The Gears. Will They Stand Up To The 2 Cylinder Pro 350cc Engine?

[Joe J]

Pete:

I was about to ask the same question, but you beat me to it.

Lee:

I know you have tested this under yout 250, I would be willing to test one under my 350 if you would like to see how they hold up.

Joe

[raceright]

me tooooooo

Lee How about 12/14 12/14 14/15 for under Rossi 500,700 Konig and konny 500,700 14,000 rpm

Pat Wright

[jkimble12]

I know you have tested this under yout 250, I would be willing to test one under my 350 if you would like to see how they hold up.

Joe

Joe,

You beat me to that one!!!!

How about this, you can do the test on the west side of the Mississippi, and I'll take care of the east side.

Josh