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| 16x46 GT with a 27 GDSD https://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=4&t=53091 |
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| Author: | snowgetter1 [ Fri May 09, 2014 6:40 am ] |
| Post subject: | 16x46 GT with a 27 GDSD |
Got a great deal on a new 16x46 gt and put my 27 gdsd on it. Max speed is 20mph in deep water and 21 in mud. I thought it would push it a bit faster, but it did increase 3mph from the 17' Tracker I had. The current rig has gas tank and trolling battery up front and starting battery in the back. Ran 20 mph from 3300-3600rpms. If i trimmed up for more rams speed would fall off. Any ideas or similar rigs out there with performance like this? |
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| Author: | WhoDat88 [ Fri May 09, 2014 6:45 am ] |
| Post subject: | Re: 16x46 GT with a 27 GDSD |
Is that speeds solo or with someone? |
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| Author: | snowgetter1 [ Fri May 09, 2014 6:48 am ] |
| Post subject: | Re: 16x46 GT with a 27 GDSD |
Just me in the boat. |
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| Author: | WhoDat88 [ Fri May 09, 2014 6:53 am ] |
| Post subject: | Re: 16x46 GT with a 27 GDSD |
You should be faster. We have to eliminate a few things. 1. Is your prop warn? 2. How high is your cavitation plate above the water at max speed? |
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| Author: | snowgetter1 [ Fri May 09, 2014 7:03 am ] |
| Post subject: | Re: 16x46 GT with a 27 GDSD |
Prop measures 5.5" from center of shaft, so 11" total diameter. The plate was anywhere from about 2-3" out of water at lower rpm to maybe 6" on the higher rpm. |
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| Author: | WhoDat88 [ Fri May 09, 2014 7:06 am ] |
| Post subject: | Re: 16x46 GT with a 27 GDSD |
| Author: | snowgetter1 [ Fri May 09, 2014 7:14 am ] |
| Post subject: | Re: 16x46 GT with a 27 GDSD |
66 hours on the motor/prop. I have never really ran it rough or in a lot of mud or sand. Have hit a few stumps here and there, but the prop has no Knicks or bends in it. |
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| Author: | WhoDat88 [ Fri May 09, 2014 7:19 am ] |
| Post subject: | Re: 16x46 GT with a 27 GDSD |
| Author: | snowgetter1 [ Fri May 09, 2014 7:23 am ] |
| Post subject: | Re: 16x46 GT with a 27 GDSD |
I have never checked the belt tension. I will have to get a gauge. The motor seems to have plenty of power and torque and I was not expecting a speed demon, but I thought I could at least get about 25 mph out of it. The bow of the boat did seem to be running a bit high out of the water though. Next week I will try to get it out with another person to see if that makes a difference. |
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| Author: | WhoDat88 [ Fri May 09, 2014 7:49 am ] |
| Post subject: | Re: 16x46 GT with a 27 GDSD |
I got 24.5 out of my old 23hp. You should get 25. Check the bottom of the boat for hooks. That could also be your problem. |
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