lucky enuff
Member
- Sep 14, 2009
- 72
- Boat Info
- 1976 customized 240 SRV
- Engines
- 2008 Mercury 250 Optimax Outboard
Thank you very much gentlemen, I truly appreciate the kind words. The old girl, as we affectionately have called our SR through the years is about done and going in the water this weekend. I'll get some pics of the deck and interior up soon.
Someone had asked about the outboard specs in a message, so I'll post the answer here for others also interested.
On the 240 SRV, I feel a 250 hp outboard is adequate. NOT under powered by any stretch. It is a bit slower to get up on plane than I was use to with the twin I/O's, but that's the only "negative" I've really encountered.
Set up properly and with the correct prop, Top speed should be between 35 to low 40's with a 250 depending on hull model and weight.
There are calculations you need to do to determine shaft length. With a single engine bracket you "might" be okay with a 25" shaft, but you'd need to do some research and do the calculations. I have a 25 on mine, and it should be a 30. I was planning on twin outboards, and did the math accordingly. When I changed my mind, I failed to account for the different placement of the outboard on the bracket.
It works, but barley. I got lucky. I needed to go with a 4 blade prop to get enough traction to hold it on plane. The prop really needs to be a few inches deeper in the water. I thought about adding an extension kit, and still might but more likely I will ride it out the way it is until I order a new outboard.
Keep in mind, I am running a 4 blade aluminum prop with these numbers -
GPH ranges from 11.5 @ 3500 rpm doing around 22 mph
GPH is around 14 @ 4000 rpm cruising speed is 26-27 mph
GPH is 18+ wot @5600 rpm with top speed of around 35 (I feel I could get 40 with a 30" shaft and SS 3 blade prop)
Someone had asked about the outboard specs in a message, so I'll post the answer here for others also interested.
On the 240 SRV, I feel a 250 hp outboard is adequate. NOT under powered by any stretch. It is a bit slower to get up on plane than I was use to with the twin I/O's, but that's the only "negative" I've really encountered.
Set up properly and with the correct prop, Top speed should be between 35 to low 40's with a 250 depending on hull model and weight.
There are calculations you need to do to determine shaft length. With a single engine bracket you "might" be okay with a 25" shaft, but you'd need to do some research and do the calculations. I have a 25 on mine, and it should be a 30. I was planning on twin outboards, and did the math accordingly. When I changed my mind, I failed to account for the different placement of the outboard on the bracket.
It works, but barley. I got lucky. I needed to go with a 4 blade prop to get enough traction to hold it on plane. The prop really needs to be a few inches deeper in the water. I thought about adding an extension kit, and still might but more likely I will ride it out the way it is until I order a new outboard.
Keep in mind, I am running a 4 blade aluminum prop with these numbers -
GPH ranges from 11.5 @ 3500 rpm doing around 22 mph
GPH is around 14 @ 4000 rpm cruising speed is 26-27 mph
GPH is 18+ wot @5600 rpm with top speed of around 35 (I feel I could get 40 with a 30" shaft and SS 3 blade prop)