Question for GN7

[WESTERNAERO]

Why are struts squared off in the back? I understand for the rudder but every lower drive unit you see is tapered on the back side leading to the prop. What's different on a V-drive prop that the strut is squared off on the trailing edge.
Looking down on a strut, 2 examples of what I asking about.

[WESTERNAERO]

Maybe these 2 pics are a better example.

[wannabe]

you want the most meat where the greatest forces are. (the back of the strut.) And the more the power, the more the forces are at that back. And trust me, you want meat there! Also, making an angle can create sharp edges where a crack can begin.
With that being said, I won't let one of my boats go in the water with a squared off back of the strut. But I won't shape it like the front. Just a little to help the water pattern recover before the propeller.

[WESTERNAERO]

Thanks, I understand the fracture critical deal, yes this makes sense. The CAD drawings are crude, they were just for a visual to understand my question. But I was thinking of some taper, maybe upper and lower would have a square or full radius and from there start the taper.
What are people using for material? I was thinking 15-5PH or 17-4PH.

[WESTERNAERO]

Hey Wannabe, is this Buzz or Paul or both? My cousin bought a guitar from one of you a few months back for his son. It was black with a triangle shaped body( I know nothing about guitars , forgive me me). His kid loves it, thanks. He said you gave him a smoken deal.

[78Southwind]

Maybe these 2 pics are a better example.

Westernaero....did you make that blast plate or did you have someone do the work for you? I am trying to find out what a reasonable price would be to install and make a bigger blast plate for the Spectra. The Spectra just has a fill plate where the old strut was (acting like a small blast plate).

[WESTERNAERO]

Westernaero....did you make that blast plate or did you have someone do the work for you? I am trying to find out what a reasonable price would be to install and make a bigger blast plate for the Spectra. The Spectra just has a fill plate where the old strut was (acting like a small blast plate).

Mr. Southwind, the pics I put up were google search pics and are not mine. However, you may be in luck. I will be making my self a blast plate for my Dimarco cruiser this winter when I re-rig it. It will be a quality piece and if you're willing to split the cost of the material with me I can easily make 2. I will not install it for you, but it shouldn't be tough if you have some mechanical ability and take your time. I love to help people it's just over the years I find myself with less and less time to do labor, so I have started to encourage everyone to do it themselves. I'm also going to be machining a bunch of parts for this build, so if you need something let me know. I've been looking at all your dimensions and we are real close. So for me to make 2 pieces of something on my CNC's is just a push of the button and no sweat if I can help you out. Feel free to call me, 818-970-1872, Kevin

[78Southwind]

Mr. Southwind, the pics I put up were google search pics and are not mine. However, you may be in luck. I will be making my self a blast plate for my Dimarco cruiser this winter when I re-rig it. It will be a quality piece and if you're willing to split the cost of the material with me I can easily make 2. I will not install it for you, but it shouldn't be tough if you have some mechanical ability and take your time. I love to help people it's just over the years I find myself with less and less time to do labor, so I have started to encourage everyone to do it themselves. I'm also going to be machining a bunch of parts for this build, so if you need something let me know. I've been looking at all your dimensions and we are real close. So for me to make 2 pieces of something on my CNC's is just a push of the button and no sweat if I can help you out. Feel free to call me, 818-970-1872, Kevin

Will do...Thanks Kevin

[WESTERNAERO]

Yep no problem, let me know what you need. And Menace marine is right down the street from my shop. So maybe you could hit them up to do install if you don't feel comfortable. Teague is also around the corner, if you need parts. Talk to Eric, he's a good dude and can answer a lot of questions you might have.