Outdrive1 (2024)

FAQs

How to determine alpha 1 gear ratio? ›

The gear ratio can be found marked on the decal on the upper unit near the drive serial number.

Alpha One Outdrive Most Popular Sterndrive for Power Boats

The Alpha One has earned a reputation as a value-priced outdrive propulsion system that delivers reliable speed. These factors combined make it a popular choice for budget conscious boaters that desire performance.

To calculate the gear ratio:

Divide the number of driven gear teeth by the number of drive gear teeth. In our example, it's 28/21 or 4 : 3. This gear ratio shows that the smaller driver gear must turn 1,3 times to get the larger driven gear to make one complete turn.

Common issues with Mercruiser Alpha One Gen 1 & Gen 2 include water pump failures and shift cable problems. Corrosion and gear wear are also common concerns. Mercruiser Alpha One Gen 1 & Gen 2 are popular marine drive systems known for their reliability and performance.

Somewhere between 260hp (standard) and 300hp, I'd guess. There are 300hp 5.7 engines running through this drive today. Not too common, but they are out there.

Typically these drives will last 10-15 years with good maintenance.

The formula that calculates alpha is: Alpha = R - Rf - beta (Rm - Rf). In this formula, R represents the portfolio's return, Rf represents the risk-free rate of return, beta represents the systematic risk of a portfolio, and Rm represents the market return, for each benchmark.

Students derive the formula for finding the gear ratio of a pair of gears: gear ratio = teeth in driven gear/teeth in driver gear.

You work out the gear range of the cassette by dividing the biggest cog by the smallest, so 42/10 = 4.20 = 420 %. By working out the gear range of your cassette, you will notice that even a small difference in the smallest cog can make a massive difference overall.

How do you find the gear ratio of a planetary gear set? ›

Divide the number of teeth on the driving member by the sum of the sun gear and ring gear teeth on the planetary gear for a system set in overdrive with the carrier as the input. The resulting number is the gear ratio for that transmission setting.