Discussion in 'Downeast Projects and Boat Building' started by Keelboater, Mar 12, 2017.
Was that one of Gurrymans 5.9's? I hope so cause I need to stop daydreaming.
I was thinking something like this was in the works...nice.
You can continue dreaming, both of mine are still available.
Of course he is, hes Keelboater. No need for a boat to be in the water.
I have painted lots of engines but never gained that much hp. Wrong spray paint I guess.
Hardcore1 - Yes I'm going to change shaft angle to swing a larger prop and modify the keel. Ratio is 1.769:1 which is ideal for this package because shaft diameter is constrained to 1.75" when converting to a fiberglass tube that fits inside the keel. The tube will not fit a 2" cutlass bearing. Shaft material will be AQ 22. The 1.75" diameter is plenty strong for this application with more than a 4:1 safety factor. Going to swing a 23" diameter prop if all goes well. Right now a 20" prop is very tight.
I came REAL CLOSE to buying the Cummins 425HP motor that Gurryman has for sale. I looked at it and there is nothing wrong with it at all. It's a brand new Re-Con and he is a stand up guy to deal with. It's just that circumstances changed for me and I went with a fully assembled motor/gear package from Seaboard Marine to save on some leg work chasing parts down. At the time his motor was still set up for 24 volt. Now it is set up for 12 volt. Someone will get a nice motor for a very good price. I would also like to thank him for setting me up with a sea trial on a similar Nauset/Bruno hull that has the same 480HP motor/ZF gear combination that I purchased. This hull handles the added speed exceptionally well which was a major concern of mine. It's very comforting to know exactly what to expect in the end - an 18 knot cruise and 25 knot top end with no keel walking.
sounds good man
You have just reinforced my own dream of a Cummins 480 repower for Royal Lowell’s venerable 35; namely, real world results for such a big investment. Thank you.
Were you black fishing a few weeks ago.ian trying to figure out who my buddy Peter met that knew me or my boat.
Do you know offhand what the fuel burn was at cruise and WOT with that setup?
With the 480 in the Nauset 35 ?
Yes, if possible
TAftw - Yes, it was about 11 GPH at 18 knot cruise and 25 GPH at 25 knots. Numbers might not be exact but are what I had written down in my notes. It's a sweet set up!
Tashmoo - I did fish in a local tournament a few weeks back on the Following C. Key word being fish rather than catch. Still quite the trip though. On the first day we saw a few seals, a huge pod of dolphin that swam with the boat, and a giant leather back turtle near Plum Gut in Long Island Sound. That's a pretty rare hat trick in the sound.
Project update: Had to build a sound deadening bulkhead (for lack of better terms) underneath the molded in galley area. This was wide open and enabled any sound to flow from the engine compartment through the entire boat and really resonate. I don't know how the previous owners lived with the noise for so long. That's done and I'm in the process of completing additional Soundown. I even went over all of the existing Soundown (which was in good shape) with another layer of 1" with vinyl barrier. Should be nice and quiet and a pleasure to operate. Now is the time to do it right while everything is accessible, or forever hold your ears! Hope to have the fuel tanks permanently installed next week and the motor in place to begin mounting bracket design.
I put my soundouwn in with pan head ss screws and fender washers but have since seen the little studs with push on caps that soundown sells. Seem like good option given the cost/weight of the ss screws though they are more easily removed/replaced should the need arise.
Did you add those pics? I typed my post above and they were not there lol. Those little studs are nice.
Yes I did add the pics. I used thickened vinylester to glue the studs to the hull where I can't use screws or straps. They work perfectly.
Straps look like a cold Galv coated strap from the lumber yard?
Actually, it's hot dip galvanized strapping, but I gave them a shot of cold galv zinc spray for extra measure. It's something that I've had kicking around for the last 20 years and finally just got sick of looking at it. For going over the existing Soundown with new material it worked out perfectly.
You can buy that new if you need more- google Simpson strapping if need be. Ain’t cheap tho and nothing better than using what you have.