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| Prop size for outboard? https://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=41&t=32380 |
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| Author: | david95 [ Fri Sep 14, 2012 4:36 pm ] |
| Post subject: | Prop size for outboard? |
Ima be using my Johnson 25 3 cyl for this duck season and was wondering what size prop would be good since ima be carrying a load and my prop now won't hardly get four people and decoys out the water! Thanks for any info. |
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| Author: | BayouBuster [ Fri Sep 14, 2012 6:24 pm ] |
| Post subject: | Re: Prop size for outboard? |
It would help to know what size an pitch you have now. |
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| Author: | david95 [ Fri Sep 14, 2012 8:12 pm ] |
| Post subject: | Re: Prop size for outboard? |
It's a 10 1/2x 12 and pitch is 15. |
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| Author: | david95 [ Mon Oct 08, 2012 7:29 am ] |
| Post subject: | Re: Prop size for outboard? |
What's a good jack plate to get? |
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| Author: | CCC [ Mon Oct 08, 2012 10:06 am ] |
| Post subject: | Re: Prop size for outboard? |
Bobs is the best jack plate I've used |
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| Author: | david95 [ Mon Oct 08, 2012 10:13 am ] |
| Post subject: | Re: Prop size for outboard? |
Ima check em out I appriciate it! |
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| Author: | Curltail [ Fri Oct 19, 2012 7:15 am ] |
| Post subject: | Re: Prop size for outboard? |
Normally a 25 turns a 13" pitch best. You probably don't have a tach but I bet the 15 is not turning the engine but about 4800 rpm at best. The engine will not last long if you don't have the rpm up at WOT to at least 5200-5800 because the spark advance is at max and not enough rpm to back it up. This will cause detonation inside the cylinder. The 13" should be the golden egg for your set up. Curl |
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| Author: | david95 [ Fri Oct 19, 2012 7:26 am ] |
| Post subject: | Re: Prop size for outboard? |
Curltail, well thanks for the good information the motor does seem to be boggin down a little bit while WOT. Would it be Bette to get the 4 blade or 3 blade SS? |
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| Author: | Curltail [ Mon Oct 22, 2012 7:35 am ] |
| Post subject: | Re: Prop size for outboard? |
I'd go with the 3 blade. |
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| Author: | david95 [ Mon Oct 22, 2012 5:24 pm ] |
| Post subject: | Re: Prop size for outboard? |
Alright thank you. |
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