Purchased a Michigan Match 17 Pitch prop as a back up to the 19 Pitch I currently have for my 115 Mariner on a 17.5 Alum Smokercraft.
I ran the 17 Pitch on the weekend and now a little worried. I experienced periodic surging (at higher Rpms), had trouble getting the Rpms up and I lost some major speed approx 8Mph and about 500 Rpms. I also experienced what felt like the prop spinning and the boat not gaining speed when I increased throttle (at or about 4000rpm).
With the 19 pitch I was running approx 39Mph (GPS) and approx 4900rpm.
What has me concerned is the surging and lack of acceleration (what felt like spinning) at higher Rpms. As soon as I get the 19 repaired (week or so away) Ill go back to it but does anyone have any input as to the situation. Do I have engine issues all of a sudden?
Thanks
I ran the 17 Pitch on the weekend and now a little worried. I experienced periodic surging (at higher Rpms), had trouble getting the Rpms up and I lost some major speed approx 8Mph and about 500 Rpms. I also experienced what felt like the prop spinning and the boat not gaining speed when I increased throttle (at or about 4000rpm).
With the 19 pitch I was running approx 39Mph (GPS) and approx 4900rpm.
What has me concerned is the surging and lack of acceleration (what felt like spinning) at higher Rpms. As soon as I get the 19 repaired (week or so away) Ill go back to it but does anyone have any input as to the situation. Do I have engine issues all of a sudden?
Thanks