TinBoats.net
The original aluminum boat site!
Forums
New posts
Search forums
Blog
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Boats
Motors
Brand new 2012 20hp 4stroke suzuki
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support TinBoats.net:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="Johny25" data-source="post: 272423" data-attributes="member: 7791"><p>Well lets just clarify a few things.........</p><p></p><p> The Merc 20hp 4 stroke has a 2.15:1 gearcase (the newer ones at least) and I believe they come with a 10 pitch prop. Take into account that the recommended RPM range is 5400-6100 and add all that up and you get a best case scenario at 6100rpm of about 24-25mph. And that is giving it a 9-10% slip ratio which is better than most props get.</p><p></p><p> In order to hit 32mph with that motor you would have to be turning a 13 pitch prop at 6100rpm with 7-9% slip....... pretty much impossible sorry </p><p></p><p> My guess is he mixed up his numbers and meant 23mph not 32mph :wink:</p></blockquote><p></p>
[QUOTE="Johny25, post: 272423, member: 7791"] Well lets just clarify a few things......... The Merc 20hp 4 stroke has a 2.15:1 gearcase (the newer ones at least) and I believe they come with a 10 pitch prop. Take into account that the recommended RPM range is 5400-6100 and add all that up and you get a best case scenario at 6100rpm of about 24-25mph. And that is giving it a 9-10% slip ratio which is better than most props get. In order to hit 32mph with that motor you would have to be turning a 13 pitch prop at 6100rpm with 7-9% slip....... pretty much impossible sorry My guess is he mixed up his numbers and meant 23mph not 32mph :wink: [/QUOTE]
Verification
Post reply
Forums
Boats
Motors
Brand new 2012 20hp 4stroke suzuki
Top