Search found 173 matches

by grundasaurus
Mon Jul 27, 2020 2:07 pm
Forum: Builder's Power Boats
Topic: Diablo build and P19 update
Replies: 2
Views: 1325

Diablo build and P19 update

Hey all, we've been very busy throughout quarantine building a Bolger Diablo from plans found in a book. Start to finish the build was 3.5 months which was by far the fastest boat we've built. We ended up putting a 60 horse Johnson on it and beefed up the structure considerably. We moved the central...
by grundasaurus
Sat Jun 13, 2020 1:20 pm
Forum: Power Boats
Topic: Outboard sizing
Replies: 12
Views: 833

Re: Outboard sizing

We built a P19 with a yamaha 115 four stroke, our boat is significantly heavier than plans, but it feels perfect with the 115, cruise at 30mph at about 4200rpm with a flat out speed of around 37/38 or so. The 115 weighs almost the same as the 90 so if you can find one in your budget I wouldn't hesit...
by grundasaurus
Sat Jun 13, 2020 12:26 pm
Forum: Builder's Power Boats
Topic: Outboard Questions
Replies: 3
Views: 401

Re: Outboard Questions

Here are some photos showing what we've done so far, the front two frames were moved forward to create a large casting deck, and the rear frame was moved backwards to create the motorwell. This obviously leaves a large unsupported space in the middle. I plan to create two more frames that will be cu...
by grundasaurus
Fri Jun 12, 2020 1:48 pm
Forum: Builder's Power Boats
Topic: Outboard Questions
Replies: 3
Views: 401

Outboard Questions

Hello all, We've gotten bored in quarantine and have been building a bolger diablo (with materials from boatbuildercentral), and we're trying to figure out what our options are for power. We've redesigned the structure significantly and have built a full motorwell for added strength. We've also been...
by grundasaurus
Wed Nov 06, 2019 8:30 pm
Forum: Builder's Power Boats
Topic: P19 build in Alberta
Replies: 24
Views: 2414

Re: P19 build in Alberta

Hey all, I have tons of photos from the build that I'll post in due course. Life has been pretty busy these last couple years and the forum updates slipped through the cracks. We were looking at going with a bracket, but decided that since the boat is relatively short that it might throw off the bal...
by grundasaurus
Wed Nov 06, 2019 5:11 pm
Forum: Builder's Power Boats
Topic: P19 build in Alberta
Replies: 24
Views: 2414

Re: P19 build in Alberta

Hey all, so we finally launched our build, sorry for the lack of photos lately, but I'll be posting lots in the next coming while. Performance is very good with the 115, it'll get to 38/39 mph at full blast. I am really happy with the extended pilothouse, the interior is very roomy. Next summer we'l...
by grundasaurus
Sun May 12, 2019 2:07 pm
Forum: Power Boats
Topic: P19 Scupper Location
Replies: 2
Views: 244

P19 Scupper Location

Hey all, We're making some serious progress on the boat now, and we're starting to think about scupper placement. Anyone know approximately where the waterline will end up on one of these, and where is the best place to position the scuppers? thought the stern or out the sides? The plan is to go for...
by grundasaurus
Tue Apr 02, 2019 6:30 pm
Forum: Power Boats
Topic: kevlar on LM18 bottom?
Replies: 21
Views: 1040

Re: kevlar on LM18 bottom?

It's really more of a peace of mind sort of thing. But there's tons of log booms that go through the area by tug, so deadheads are a fairly common sight/concern boating. Nice to know there's a little more impact resistance.
by grundasaurus
Mon Apr 01, 2019 3:44 pm
Forum: Power Boats
Topic: P19 Fuel system
Replies: 5
Views: 296

Re: P19 Fuel system

Thanks for the reply Orangequest, I like the idea of the tanks being able to self-level. Going back to my knowledge of aviation, it's true that you have to set the fuel selector valve to a singular tank after shutdown to prevent crossfeeding, otherwise the tanks would transfer over to find level. I ...
by grundasaurus
Sun Mar 31, 2019 8:20 pm
Forum: Power Boats
Topic: P19 Fuel system
Replies: 5
Views: 296

Re: P19 Fuel system

Ah that would make sense, there isn't much centerline real estate now that the sole is on and the area under is all foamed up. The other possible solution would be to have two tanks with a selector valve joining the lines, more like a Piper style aircraft, and just switch between the tanks as needed...