Author Topic: 390 Scorpion staggered set up  (Read 3330 times)

wannabe

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390 Scorpion staggered set up
« on: June 07, 2013, 07:19:15 am »
A fellow OSO member came up with a staggered 390 Scorpion. I posted pics on OSO  http://www.offshoreonly.com/forums/chris-craft/296957-need-help-v-i-n-speed-39-scorpion-2.html

Interesting, this the only staggered Chris Craft I have seen.

wannabe

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Re: 390 Scorpion staggered set up
« Reply #1 on: June 07, 2013, 07:46:43 am »
More

ccstinger

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Re: 390 Scorpion staggered set up
« Reply #2 on: June 08, 2013, 06:42:08 pm »
It's hard to tell from the pictures - how is it setup staggered?  Is on engine inline with the other or slightly offset?

wannabe

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Re: 390 Scorpion staggered set up
« Reply #3 on: June 10, 2013, 09:02:06 am »
Engines are placed on narrow centers one in front of the other.

wannabe

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Re: 390 Scorpion staggered set up
« Reply #4 on: June 10, 2013, 09:05:31 am »
In this pic the starboard engine is shown, the port engine is under the hatch at right and placed in front of the other.

Staggered set ups are faster, have less drag and more balance as weight is more towards center. In image 1289 above you can see the exhaust pipe from the port engine as it bends around the starboard engine.

Wannabe
« Last Edit: June 10, 2013, 01:49:20 pm by wannabe »

wannabe

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Re: 390 Scorpion staggered set up
« Reply #5 on: June 10, 2013, 01:50:49 pm »
Img 1335


ccstinger

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Re: 390 Scorpion staggered set up
« Reply #6 on: June 10, 2013, 06:17:07 pm »
Very interesting setup - it looks like the sundeck has been lengthened as well to accommodate the engines in that setup.  Wondering what the story was behind it - i.e. who did the mods.

stinger390x

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Re: 390 Scorpion staggered set up
« Reply #7 on: June 11, 2013, 11:25:40 am »
Wow that's quite a job!
The upostry looks great and the day-bed would be comfortable, but my only concern would be the cross stringer would have to have been cut and moved up. This would cause excessive stress behind that crosmember to the transom. I hope extra strength was placed in the floor stringers under the engines?
I do admit it would be much more pleasant to work on the engines in the bay in a staggered position than side by side!

wannabe

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Re: 390 Scorpion staggered set up
« Reply #8 on: June 12, 2013, 11:26:56 am »
Thats a factory setup, probably custom ordered. I think those were merc 400's or 420s.

Wannabe