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Target Rpm And how to achieve
https://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=6&t=12477
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Author:  jrp267 [ Sat Sep 18, 2010 8:23 pm ]
Post subject:  Target Rpm And how to achieve

I got an older 16 hp go devil. I put a tach on it ow 4050 in the water with load 3150. Now is the boat overloaded do I need to lighten the load. Or would a bigger boat Ie displace more do the same thing? I would like to run about 36 to 3800

Author:  bbb [ Mon Sep 20, 2010 9:27 am ]
Post subject:  Re: Target Rpm And how to achieve

What size prop are you running? Website shows it should be a 9x3.

There is not a "one size fits all" when it comes to props, so you have to buy it according to what your loads are most of the time.

My 16 gdlt on a 1436 boat would run 14mph alone and 12mph with me and a buddy.

Author:  jrp267 [ Mon Sep 20, 2010 10:13 am ]
Post subject:  Re: Target Rpm And how to achieve

I bought whatever godevil recommended. I think 9x3.

Author:  bbb [ Mon Sep 20, 2010 11:05 am ]
Post subject:  Re: Target Rpm And how to achieve


Author:  GeeLeDouche [ Tue Sep 21, 2010 4:15 am ]
Post subject:  Re: Target Rpm And how to achieve

I have a 16hp godevil and I'm gettin about 3300 rpms in the water and that seems to be doing me pretty good. but then again I'm running a 9x5 prop instead of a 9x3, but its worn down probably 3/4 inch so it will be needing to be replaced soon. anywho. hope this helps.

Author:  Gordie [ Mon Sep 27, 2010 11:10 am ]
Post subject:  Re: Target Rpm And how to achieve

bbb what do you think the rpm's om that 27hp were , and what kind of boat did you have it on?

Author:  bbb [ Mon Sep 27, 2010 12:48 pm ]
Post subject:  Re: Target Rpm And how to achieve

Both my kohlers, 25 and 27, were right around 3700 when running the fastest.



Best speed I ever ran on the gps was 19.2 in the river.

Author:  Gordie [ Mon Sep 27, 2010 1:22 pm ]
Post subject:  Re: Target Rpm And how to achieve

With the current

Author:  bbb [ Mon Sep 27, 2010 2:45 pm ]
Post subject:  Re: Target Rpm And how to achieve

This part of the river is too close to the lake to have much current. Usually my speeds up river are <.5 of what my speeds are down river.

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