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Hewes Tailfisher- Stuggling to Plane


Savannah Maverick

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18 hours ago, captpn said:

lowering the motor wont help. Sounds like the wrong prop.

Yep, sounds like it.....get the numbers off the side of the prop and post.

1.) brand prop

2.) numbers on the side will tell you size, pitch, etc.

3.) 3 blade or 4 blade

4.) What is your WOT with the current prop?

 

with this, it's fairly easy to diagnosis the topic.

 

dc

 

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5 hours ago, Wanaflatsfish said:

Yep, sounds like it.....get the numbers off the side of the prop and post.

1.) brand prop

2.) numbers on the side will tell you size, pitch, etc.

3.) 3 blade or 4 blade

4.) What is your WOT with the current prop?

 

with this, it's fairly easy to diagnosis the topic.

 

dc

 

its a 4 blade

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5 hours ago, Wanaflatsfish said:

Yep, sounds like it.....get the numbers off the side of the prop and post.

1.) brand prop

2.) numbers on the side will tell you size, pitch, etc.

3.) 3 blade or 4 blade

4.) What is your WOT with the current prop?

 

with this, it's fairly easy to diagnosis the topic.

 

dc

 

44 rpm wide open.

cavitation plate is 2 inchs above hull tunnel

4 blade prop.

boat will only run 22 mph wide open at 42-44 rpm.

 

PROP INFO:

Powertech 4 blade

9442102-001-001-001

scd4r13pym90

 

prop.jpg

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Is the motor running properly?  Linkage and all allowing it to run wide open?

I have no time on a Tailfisher but SCDs spin up pretty easy and I would imagine you would get more RPMs out of a 13" unless someone did some major work to the prop.  Just guessing here.

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  • 3 weeks later...

I was going to say the same thing, that motor should run over 5500 rpms.  You should do at least 35mph.  looks  like the motor is too high  and you are blowing out,but I don't under stand why the rpms are so low at WOT.  Something isn't making sense.    When you have the  tabs down and have a rooster tail you are fighting the motor.  You must be plowing a lot of water.  The boat should sit on the back 3rd of the hull when you are at WOT.

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