Hi all,
I'm new to Bennington's and pontoons but have had a few boats before including most recently a 21' center console. I just took delivery a few weeks ago of a new to me 2014 Q25 with a Yamaha F250XCA and a Yamaha SWS2 17"x15.5 prop, 400 hours. This has the EPS Tritoon package with lifting strakes. I just filled the gas tank with new ethanol free gas at the local marina. The engine sounds like it is running well but the performance and speed at the top end feels like it's just missing. At WOT I'm getting 24.3 mph by gps in good conditions and lightly loaded, with the motor at 4300 RPM. This seems way too slow, right? I calculated that this is 40%+ prop slip. It feels like it gets out of the hole well and operates well up to about to about 3000 RPM where it's getting about 21mph. Any ideas about things I should check out first or go about diagnosing? I'm wondering if I'm getting cavitation on the prop, or the VST system needs cleaned? Any other suggestions to look at?
Thanks!
I'm new to Bennington's and pontoons but have had a few boats before including most recently a 21' center console. I just took delivery a few weeks ago of a new to me 2014 Q25 with a Yamaha F250XCA and a Yamaha SWS2 17"x15.5 prop, 400 hours. This has the EPS Tritoon package with lifting strakes. I just filled the gas tank with new ethanol free gas at the local marina. The engine sounds like it is running well but the performance and speed at the top end feels like it's just missing. At WOT I'm getting 24.3 mph by gps in good conditions and lightly loaded, with the motor at 4300 RPM. This seems way too slow, right? I calculated that this is 40%+ prop slip. It feels like it gets out of the hole well and operates well up to about to about 3000 RPM where it's getting about 21mph. Any ideas about things I should check out first or go about diagnosing? I'm wondering if I'm getting cavitation on the prop, or the VST system needs cleaned? Any other suggestions to look at?
Thanks!
Last edited: