pearlvette
Cadet
- Joined
- Jun 18, 2010
- Messages
- 7
18' Bass Buggy, 70 hp Johnson 1975. Today I took out the pontoon with the new prop 13.5X15 after changing the original prop 13X19. The original prop was pushing 4000 rpms WOT. According to mph gauge around 14 mph. After reading all the info on props, I thought I needed to bring down the pitch to get the rpms up. I tried the 13.5X15 with high expectations. I could only pull a little over 3000 rpm WOT with the new prop. I thought I would increase the rpm by 800 approximately to get closer to the rated 5000 operating rpm as stamped on the engine ID. I am thinking of trying to lower the motor down one notch. The motor bracket sits one notch above the top of the transom. Lowering it would put it resting on the transom top. Any ideas??? This is the first pontoon I have owned and today was the third time I have taken it out. Previous owner put the 70 hp Johnson on it to sell with the boat, he never used it with the Johnson on it. By the way, great info on the forum.
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