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rob vanharten

03-12-2012 06:13 PM

New boat speed questions

Recently picked up a 84 38 scarab. This is a straight v no notch no step hull, and is the raised deck variation. Boat has some 800's in it, with trs drives (for now) I know time bomb. Anyways speed predictions with this hull and power. 6's will be an upcoming upgrade. I thought this would get more attention here than in the scarab forum. Thanks!!!

Car Biz

03-12-2012 06:24 PM

rob i'm taking a stab here 70. BTW call me when you get a chance

Jeremy

mike tkach

03-12-2012 06:36 PM

if the engines are making 800 hp,id say mid 90s.

kvogt

03-12-2012 06:40 PM

My guess 77mph

fireboatpilot

03-13-2012 02:04 PM

I ran a 78 30' with twin 468's maybe making 550 with small blowers and got 80-82 out of it on her best day

chewymalone

03-13-2012 02:11 PM

No way 90's. I'd say low 80's at best... probably upper 70's.

rob vanharten

03-13-2012 03:27 PM

Quote:

Originally Posted by chewymalone (Post 3640370)

No way 90's. I'd say low 80's at best... probably upper 70's.

Really? I was thinking mid eighty's...... twin 800's is some decent power. What would be the limiting issues? Obviously no step or notch, but are they heavy, or poor hull design? Thanks guys, just trying to learn. I also have a 86 formula 357 with 600's and it runs 71 gps. I figured the scarab to be a faster/lighter hull and with 800's to be signifacantly faster.

mike tkach

03-13-2012 08:52 PM

Quote:

Originally Posted by mike tkach (Post 3639721)

if the engines are making 800 hp,id say mid 90s.

ok,lets say 88 mph.

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