Bad Girl

Lookin for help from someone with thorough knowledge of rigging. I have a 38 scarab and adding SSM#3 with 12" setback extension boxes.

I would like advice on how low the bullet is below the running surface for twin staggard motors 800's.
There is no notch or step. year is 1978 with blueprinted bottom.
Anyone running something similiar with good results??

Thanks for any input!

KAAMA

iTrader: (1)

What year is your boat? Does it have a stepped hull or a notched transom?

"Cord" and/or some other guys might be able to comment on this...sit tight.

puder

damn that boat is a tank!!!!!

they biult them heavy back then, but with big power and ssm drives she'll ride like a cadillac, might not be eth fastest but when the water gets snotty thats the ride i'd wanna be in.

Bad Girl

Anybody out there to give some proffessional advice on this subject.

puder

post anothe thred on "38' scarab setup" try generl discussion maybe you'll get mor einfo if peopeo aren;t respodning to this one.

Gary Anderson

I set up an 81 38 Scarab a few years ago. Staggered w/ TRS. A lot is going to depend on the weight distribution. I was able to increase the X dimension by over 2 inches by moving some weight around. That gave me al least 5-6 mph and a much nicer ride. Is it a flat deck or raised deck 377? Does it have a full cabin? Are you running the belly tank or did you add saddle tanks?
Gary

Bad Girl

Gary, Thanks for the response. This is a 1978 377 serial#1 of the raised deck with cabin and belly tank. boat needs alot of trim and QIV hydromotive props on trs, but has a great solid ride through any water. bottom has been straightened.

Seeing how new setup of #3 drives extened out further than a trs and then adding boxes. I am curious to how high the drives and motors need to be.

Thanks.

Gary Anderson

First off, add saddle tanks. The boat rides like a pig on roller skates with the belly tank even half full. Moving the weight back will allow a higher X dimension, higher speeds, and a much better ride. 2 standard 50 gal tanks will fit easily on either side of the motors.
BTW, this and lightening the cabin also completely eliminated the bow rise when getting on plane, allowed the boat to plane at lower speeds, and virtually eliminated the need for tabs.
I set mine up for TRS, but there's another 377 w/o boxes and a relatively high X dimension that I know of. I can check to see what height he's running. There is also a standard "formula" for the amount of rise vs. setback that box manufacturers reccomend. I think Stellings had the rise built into the box.
Clearace for the motors to the deck shouldn't be a problem in the staggered setup. They're pretty deep in there anyway.
Gary

Cord

iTrader: (2)

I'd love to help, but I'm neither familiar with the application, or the #3. Sorry, but I'm not gonna' bs you.

mcollinstn

First I've heard of adding saddle tanks outboard of the motors.

I like that idea...