Offshoreonly.com - 84 Scarab Renovation (ongoing)

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Quote:

Originally Posted by adk61 (Post 4273314)

how much did tank cost you?

Boy it was several years ago but I think it was around $600. I had a local fab shop build it for me. I of course provided the CAD drawings. All he had to do was cut, bend and weld! :)

Looks like you are using Unigraphics NX software? Great job. Keep it coming !!!!!!!!!!!!!!

Also looks like your leaving room for blower pulleys ;)

Quote:

Originally Posted by Unlimited jd (Post 4273707)

Also looks like your leaving room for blower pulleys ;)

I think they call that planning ahead! :)

Quote:

Originally Posted by 502ss (Post 4272966)

Now that I finally figured out why I couldn't seem to get the engines to fit in the bilge and have the correct angle for the drive shaft I started the design of the custom standoff on the transom. I also plan to add the teardrop plates for the kaama's (mine are the early style without the plates). Standoff will only need to be 3.5" thick with a 1" teardrop plate.

Now the question is do I make the standoff out of plywood and glass when I redo the transom or have something made from aluminum ($$$)

is the standoff a dimensional necessity or will it be load bearing? I would probably opt for aluminum as easy as it would be to mill (unfortunately $$$$$$) I just picked up a three axis gridge mill hope to be able to make this kinda schit soon lol.

kick azz representation by the by :D

how low below the bottom are the prop shaftrs going to be set?

i think I mentiioned in another post that mine were supposed to be 3 1/4 below the bottom with standard drives and with a -2 drive they would be 1 1/4 below with the 3 up extension boxes. when i finally got around to hanging the drives they were pretty much level with a standard drive. i do not think the company that mounted the 3 up boxes understood the concept of what they did. now i am wondering if i will be able to get on plane :mad:

Quote:

Originally Posted by glassdave (Post 4277182)

Thanks Dave! So glad you chimed in!

I guess you can consider the standoff as load bearing since it's what the drives will be mounted to. Believe me I would love to do it from 2 blocks of aluminum but the aluminum alone would cost $1500 before any milling or powder coating. Not sure it's in the budget! :(. My plan was to make it out of 5 layers of 3/4 marine grade plywood with a layer of 1708 between each sheet. The whole unit would be through bolted in 4 places
And then wrapped all around the outside in 1708 with it being tabbed into the new transom plywood. I figured that would make it wrong as hell! Your thoughts?

I also plan to cut the majority of the back of the boat off when I replace the transom. I figure the original glass is already Swiss cheese from the TRS's and all the accessories. This will allow a nice clean mate between the new transom and the standoff. The attached picture with the red line shows the rough idea of the cut line. I believe the will leave enough glass to maintain dimensional stability of the back of the boat.

http://i69.photobucket.com/albums/i4...psjtjkmeo6.jpg
http://i69.photobucket.com/albums/i4...psucctdexv.jpg
http://i69.photobucket.com/albums/i4...pszecjfcbw.jpg
http://i69.photobucket.com/albums/i4...ps0mh685bu.jpg

Quote:

Originally Posted by hullofjustis (Post 4277189)

Dude that sucks! When I started this venture I was very concerned about making sure I mounted these surface drives at the right height. Luckily I was able to put my hands on the original kaama setup documentation that includes mounting location information. I also had another board member confirm that the dimensions in the documentation are relevant for the scarabs and not for just another brand like formulas.

http://i69.photobucket.com/albums/i4...psrwox5jf6.jpg

yea not happy. based on your drawing from kaama, I am hoping with the extension boxes there maybe a possibility I will be able to get on plane. I hope any away.