242 LS Hull 75+ mph Possable
12-13-2006 | 06:57 PM
#22
Registered
Joined: Nov 2003
Posts: 2,296
Likes: 3
From: Lake Travis ,Texas
Re: 242 LS Hull 75+ mph Possable
correct prop and in the case of dual motors correct rotation of props should correct any ride problems.
There is no reason a Formila with a staight bottom should porpoise unless something is wrong with the setup.
Prop and drive science has come a long ways since Formula
made them in the 80s.
My lil 21 footer with a 454 and radar arch in the back is very stern heavy. With the wrong prop(bowlifter) it bounces up and down like a carnival ride. With a stern lifting (or no lift) prop it rides smooth as can be.
There is no reason a Formila with a staight bottom should porpoise unless something is wrong with the setup.
Prop and drive science has come a long ways since Formula
made them in the 80s.
My lil 21 footer with a 454 and radar arch in the back is very stern heavy. With the wrong prop(bowlifter) it bounces up and down like a carnival ride. With a stern lifting (or no lift) prop it rides smooth as can be.
Originally Posted by mopower
You're absolutely correct but in the case of a 272 with big blocks , it's very stern heavy and tends to porpoise between 40 and 60 mph without using tabs anyway. Removing the hook would only make it worse. Next summer I plan to try some Hydromotive props in lieu of Bravos since B1's are bow lifters anyway and Hydros are stern lifters. A single engine 242 is a bit of a different story as the balance is much better than a twin BB 272 as demonstrated in these pictures.
12-13-2006 | 08:28 PM
#23
Charter Member
Joined: Oct 2000
Posts: 1,679
Likes: 1
From: Richmond, VA
Re: 242 LS Hull 75+ mph Possable
'89 Formula 242 with single 502ci using a B&M 250 blower. Bravo drive. I can't remember what prop I had on it. Ran 78mph (on hand held GPS) all day long. Sometimes I wish I had it back.
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Steve Gresham
'03 Donzi 33ZX
Steve Gresham
'03 Donzi 33ZX
01-01-2007 | 06:55 AM
#27
Registered
Joined: Jan 2002
Posts: 4,035
Likes: 5
From: Batavia Oh.
Re: 242 LS Hull 75+ mph Possable
You're absolutely correct but in the case of a 272 with big blocks , it's very stern heavy and tends to porpoise between 40 and 60 mph without using tabs anyway. Removing the hook would only make it worse. Next summer I plan to try some Hydromotive props in lieu of Bravos since B1's are bow lifters anyway and Hydros are stern lifters. A single engine 242 is a bit of a different story as the balance is much better than a twin BB 272 as demonstrated in these pictures.
