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Forum: Drives and Lower Units

01-20-2011, 04:47 PM

Replies: 20

some drive ratio explaining

Views: 3,828

Posted By tcelano

Cool, I live about five blocks from Tim. If...

Cool,

I live about five blocks from Tim. If you ever bring your boat down to the Columbia and go roaring past St. Helens, let me know, and I'll listen for it. Maybe that will help motivate me to...

Forum: Drives and Lower Units

01-20-2011, 01:09 PM

Replies: 20

some drive ratio explaining

Views: 3,828

Posted By tcelano

That's a pretty trick rig. Did you buy it down...

That's a pretty trick rig. Did you buy it down here in Portland? I was guessing you had to be over 1000 hp to get that kind of speed.

What are you doing for a drive?

Never mind- you can't see...

Forum: Drives and Lower Units

01-20-2011, 12:00 AM

Replies: 20

some drive ratio explaining

Views: 3,828

Posted By tcelano

Agreed. I had more typical rigs in mind. Over 100...

Agreed. I had more typical rigs in mind. Over 100 mph, you are in a different league and are playing with a lot more power. What are you running?

Forum: Drives and Lower Units

01-19-2011, 04:00 PM

Replies: 20

some drive ratio explaining

Views: 3,828

Posted By tcelano

On most drives, part of the reduction happens in...

On most drives, part of the reduction happens in the upper, and part happens in the lower unit. Multiplying the two ratios together gives the overall ratio. For instance, a typical SSM IIIA or V has...

Forum: Drives and Lower Units

01-19-2011, 03:51 PM

Replies: 20

some drive ratio explaining

Views: 3,828

Posted By tcelano

There's no reason to use anything other than...

There's no reason to use anything other than 1.5:1 on a V-bottom unless you have enough power to run out of prop selection, and by that time, you are going to be blowing bravo drives. Cats are a...

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