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 GDSD...Do I need a new prop? 
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Post GDSD...Do I need a new prop?
Hey guys,

I have a 1748 Uncle J with a 27hp GDSD. I ran the boat in the sand on the Texas coast for about 2 years. It seems like I've lost a bit of speed and its throwing a big rooster tail. My Tiny Tach has died so I don't know what type of RPMs I'm running WOT.

I know next to nothing about props, but I'm assuming I need a new one or get this one worked. It measures fine, but I've got a couple dings. I definitely need some help/advice.

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Thoughts? Thanks guys!


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Sat Jan 27, 2018 2:34 am
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Post Re: GDSD...Do I need a new prop?
It looks like you need a new prop.
But the first step is to get a tach and see what your rpms are.
If you’ve run sand for 2 years, your prop is about toast.
I always found that the GDSD’s didn’t throw a big rooster tail, maybe trim down a bit.

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dead animal wrote:
Giga, u need a fukin throat punch. if u want flotation, good for u, but don't ever, for 1 second of your miserable life, think u can tell me what to do.

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Sat Jan 27, 2018 9:16 am
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Post Re: GDSD...Do I need a new prop?
Buy a new prop and get the old one reworked, never hurts to have backup.

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Sat Jan 27, 2018 9:21 am
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Post Re: GDSD...Do I need a new prop?
Thanks guys! Got a new tach on order. Coming tomorrow.

Should I just buy a new one from GD or are there better/cheaper options out there? I searched around a little bit but I just found more expensive props.


Sat Jan 27, 2018 5:13 pm
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Post Re: GDSD...Do I need a new prop?
GASO448 wrote:
Thanks guys! Got a new tach on order. Coming tomorrow.

Should I just buy a new one from GD or are there better/cheaper options out there? I searched around a little bit but I just found more expensive props.



Buy one from GD.
I’ve heard of Hopkins props, but not sure if they make one for GD

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dead animal wrote:
Giga, u need a fukin throat punch. if u want flotation, good for u, but don't ever, for 1 second of your miserable life, think u can tell me what to do.

whatever


Sat Jan 27, 2018 5:23 pm
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Post Re: GDSD...Do I need a new prop?
Hill Marine has 2 blade for 219.00 plus shipping, multiple pitch options.

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Mon Jan 29, 2018 10:33 am
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Post Re: GDSD...Do I need a new prop?
CypressCritter wrote:
Hill Marine has 2 blade for 219.00 plus shipping, multiple pitch options.
do they have 3blade?


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Mon Jan 29, 2018 4:08 pm
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Post Re: GDSD...Do I need a new prop?
not on their website, but if you change to a 2 blade -- need to go up in pitch and/or diameter. that is where a tach comes in handy for hitting the WFO rpm range in the sweet spot.

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Mon Jan 29, 2018 8:04 pm
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Post Re: GDSD...Do I need a new prop?
You don't necessarily need a new prop.

Send it to get re-worked. It still has life left.

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Tue Jan 30, 2018 10:54 am
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Post Re: GDSD...Do I need a new prop?
craig wrote:
You don't necessarily need a new prop.

Send it to get re-worked. It still has life left.


That’s kind of what I’m thinking. It measures within spec, but it just has those gouges. Are there some recommendations on where to send it off to?


Wed Jan 31, 2018 3:16 am
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Post Re: GDSD...Do I need a new prop?
Diameter means nothing....

Measure ACROSS blade width - new is 3 1/2" - 3 1/4" lost some performance - under 3" junk...

PS - never seen anyone properly rework a 3 blade !
They over-cup it and you can't keep it down on a GDSD...
Just buy a new prop and keep old one as is as a spare...

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Wed Jan 31, 2018 7:19 am
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Post Re: GDSD...Do I need a new prop?
If anyone can properly rework it, it would be baggy in Houma. Dude is on point.

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Tue Apr 24, 2018 7:48 pm
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