Recent content by Rondo64

Hi. Not going to tinker much more. May do an inch increase on prob, but ugh. Gps speed went from about 17mph with the 14x13 to 21mph with 14x11.

Occam's Razor is a parable of sorts that says the best solution is generally the simplest, most obvious. Case in point, in my situation the tach was wrong. With a hand held tach as reference, boat tach was 1000 rpm too high. The pulse setting was wrong. Now, registering 6200 WOT with a 14x11...

Will do. Maybe a Homer Simpson moment at work

That's where my head is. A 14x11 or a 13.5x12 too. I have a 14x13 with (too much) cup and rpm tops out at 5000. I had my prop guy put cup because the 14x13 would turn 6000 with no increase in velocity from 5000 to 6000...bad slippage. Figure too much pitch at 13, so opted for 14x11. But, that...

Thanks for all the help. To your point, the prop Benny recommended is the dual thrust, which shunts exhaust forward when in reverse to give the prop clean water in reverse. Thanks for the lead on whether exhaust is aerating the water. I'll study the prop function to see if that theory bears fruit.

Agreed, but I must say Benny is very responsive. I'll get pics when back in the country next week

Thanks for the feedback. I talked with Bennington and they confirmed that the toons raise the stern. Duh. But, with the upgraded toons they didn't compensate by adjusting the transom down. Engine is mounted on lowest setting but bracket is maybe 3/4 inch off the transom. I suppose I could...

That's my thought too. With the bigger toons the pod rides higher. Hard to check and hard to do anything about it!

Hello all. I have a question to the forum. I have a 2013 20sl with a 2012 Yamaha F70. Nice boat and engine. 25" pontoons (2), with the short center fuel pod. Engine is on lowest hole. I talked with Benny and they said since I have the upgraded toons my max hp is 90 rather than the sticker...

What prop are you using?

Thanks. Good to know. I wonder if they have a protocol to rerate the boat for higher hp. Newer versions of the same model are 90 or 115hp. Coast guard has their formula but Louisiana Fish and Wildlife has a mind of its own...don't need no stinking Coast Guard!

That's the plan. Once I am sure the toon are spotless I'll go prop. Prop God sells me one and if it isn't right I send it back, only losing $40. No brainer. As for ventilating, that's a concern I have. Not overtly venting where the rpm goes nuts, but venting in the sense that the prop sits in...

Thanks for the response. Yeah, slipping like heck. I can go from 5300 to 6000 rpm with no increase in velocity. Feels like I'm still tied to the dock. After my initial assessment of the 6000rpm (+ a bit more on a calm day) I had my prop guy put a bit of cup on the prop. A bit. But, dropped rpm...

I have a 20sl with a 70 yam 4stroke. Plods along at 17 or 18, with a quarter tank, and me and mom, nothing else. 14x13 prop, 6000rpm. Prop God says 13.5x12, but I wonder if anybody has similar config, before I go the prop route

What prop do you have on that combo