Outdrive ratio

[montero]

Looking 1:1 , 1:1.2 ratios. clock- and counterclockwise . Low cost , high quality . E.g. aftermarket US suppliers.
Outdrive Specifications | Marine Parts Express https://www.marinepartsexpress.com/outdrive-specifications
Can't find pix drive .

 

[baeckmo]

What do you mean with "pix drive"? If you're looking for Volvo Penta drives (which the link suggests), there are none with the ratios you look for.

 

[montero]

Penta PJX-S , PJX-C , PJX-C1.

 

[montero]

I realised that they are jets...

 

[montero]

What do you mean with "pix drive"? If you're looking for Volvo Penta drives (which the link suggests), there are none with the ratios you look for.

Do you have any idea how the rotation/steering line runs in the Penta IPS ? Or is it just the line of the vertical drive shaft?

 

[gonzo]

What line are you asking about? It is an integrated system, so you simply make the hole and bolt in the unit. VP helps with the engineering. As far as counterclockwise, there is no such thing. They have counter-rotating propellers, so the torque is neutral.

 

[montero]

What line are you asking about? It is an integrated system, so you simply make the hole and bolt in the unit. VP helps with the engineering. As far as counterclockwise, there is no such thing. They have counter-rotating propellers, so the torque is neutral.

Penta IPS , just asking about steering /rotational axis placement but it's obvious that it must be vertical driveshaft axis. Pod drive , especially forward facing Penta IPS is far from my interest . I'm curious about e.g. exhaust pipe twist or hitting something...
Maybe you have idea about Mercuiser/ Cobra/Penta gearbox ratios ? Only lower unit gearbox ratios .
Or have you heard about custom ratios. Biggest V8 have 1:43 ratios but it's summary ratio from lower unit and upper unit ratio.
?

 

[gonzo]

The answer is too long for a post. All that information is in the specifications from the factory, which are all online.

 

[montero]

Yep. I dig to find contact to one boat service guy who's more than me familiar with outdrives. As I remember he praised the Penta because of clutches .
But I need special drive and need only few parts from.

 

[gonzo]

What parts do you need?

 

[montero]

Lower unit .

 

[baeckmo]

Then you might look for a Volvo Penta "Forward Drive" (FWD-B f.i) or Mercruiser Bravo 4. But, again you won't find the ratio's you look for. The Penta comes with three (total) ratios: 1.95:1, 2.14:1 and 2.32:1.

 

[gonzo]

He also wants low cost and high quality.

 

[baeckmo]

....oops, that's another league!

 

[gonzo]

VP gears are of really high quality, and they are also one of the most expensive. Gears alone make little sense. The housing, shafts, etc. have to be cast and machined which is not just very expensive, but requires a mechanical engineer to design.