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| GDSD...Do I need a new prop? http://mudmotortalk.com/mmt_v2/viewtopic.php?f=41&t=71968 |
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| Author: | GASO448 [ Sat Jan 27, 2018 2:34 am ] |
| Post subject: | 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. IMG_2399.jpg IMG_2398.jpg IMG_2397.jpg Thoughts? Thanks guys! |
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| Author: | brycecheramie [ Sat Jan 27, 2018 9:16 am ] |
| Post subject: | 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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| Author: | CypressCritter [ Sat Jan 27, 2018 9:21 am ] |
| Post subject: | 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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| Author: | GASO448 [ Sat Jan 27, 2018 5:13 pm ] |
| Post subject: | 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. |
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| Author: | brycecheramie [ Sat Jan 27, 2018 5:23 pm ] |
| Post subject: | Re: GDSD...Do I need a new prop? |
| Author: | CypressCritter [ Mon Jan 29, 2018 10:33 am ] |
| Post subject: | 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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| Author: | kirk [ Mon Jan 29, 2018 4:08 pm ] |
| Post subject: | Re: GDSD...Do I need a new prop? |
| Author: | CypressCritter [ Mon Jan 29, 2018 8:04 pm ] |
| Post subject: | 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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| Author: | craig [ Tue Jan 30, 2018 10:54 am ] |
| Post subject: | 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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| Author: | GASO448 [ Wed Jan 31, 2018 3:16 am ] |
| Post subject: | Re: GDSD...Do I need a new prop? |
| Author: | Gigafowl [ Wed Jan 31, 2018 7:19 am ] |
| Post subject: | 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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| Author: | Wchauvin [ Tue Apr 24, 2018 7:48 pm ] |
| Post subject: | 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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