Formula boat porpoising - Winnipesaukee Forum

XCR-700 Formula boat porpoising 09-27-2019, 03:08 PM

MeredithMan Yup.... 09-27-2019, 03:49 PM

Descant Porpoising = out of trim? 09-27-2019, 04:46 PM

MeredithMan In my case, outdrive was all... 09-27-2019, 04:58 PM

VitaBene Not really. Drive trim up... 09-28-2019, 08:57 PM

Cobalt 25 Original Formula was a 2001... 09-29-2019, 07:57 PM

macbeth You mentioned new Boat with... 09-29-2019, 11:46 PM

BroadHopper Formula Porpoising 09-30-2019, 05:46 AM

iw8surf We are surfing behind a... 09-30-2019, 07:35 AM

Bootkie2 You are not crazy. The trim... 09-30-2019, 03:34 PM

XCR-700 Well I think we have clearly... 09-30-2019, 05:49 PM

Woody38 Not that there is any... 09-30-2019, 07:16 PM

Bootkie2 I'm not sure a new prop set... 09-30-2019, 08:31 PM

Descant Summary 09-30-2019, 10:05 PM

XCR-700 Hummm,,,, Based on what I... 10-01-2019, 06:11 AM

Taz porpoise 10-01-2019, 03:05 PM

Dave R I had two boats with stepped... 10-01-2019, 04:14 PM

XCR-700 In my decades of boating I've... 09-27-2019, 06:06 PM

LIforrelaxin Go out on a calm day, start... 09-27-2019, 07:31 PM

8gv What about the trim limit... 09-27-2019, 10:21 PM

TiltonBB I am surprised that anyone... 09-28-2019, 06:37 AM

XCR-700 Very similar to my experience... 09-28-2019, 08:44 AM

XCR-700 I dont think there is a... 09-28-2019, 08:41 AM

XCR-700 This is exactly what I did. ... 09-28-2019, 08:28 AM

LIforrelaxin Sounds to me that Formula has... 09-30-2019, 06:36 AM

XCR-700 Interesting, sounds pretty... 09-27-2019, 06:00 PM

ApS Hogback... 09-28-2019, 10:07 AM

XCR-700 Its a new boat with ~35 hours... 09-28-2019, 12:03 PM

ursa minor Does the Formula use a... 09-28-2019, 04:45 PM

Taz Stepped hull 10-01-2019, 02:45 PM

Dave R I would try a set of Hill... 10-01-2019, 03:01 PM

XCR-700 I dont think so, looks very... 10-01-2019, 07:54 PM

Bootkie2 I still think you'll go down... 10-02-2019, 09:34 AM

LIforrelaxin I think that test report says... 10-02-2019, 10:48 AM

Dave R Good advice there. 10-02-2019, 02:37 PM

Formula260SS I don't use a lot of trim... 10-02-2019, 03:28 PM

VitaBene Agreed Jason, even though... 10-03-2019, 08:13 AM

Bootkie2 Isn't that like all boats... 10-03-2019, 12:16 PM

8gv My 2008 Sea Ray 240 Sundeck... 10-03-2019, 07:16 PM

XCR-700 Good catch! Thought the... 10-04-2019, 09:11 AM

radiocontester This has been my experience... 10-03-2019, 08:49 PM

RTTOOL Check the back pin on the... 09-30-2019, 06:15 AM

erick26 For what it’s worth I have a... 10-04-2019, 06:13 AM

XCR-700 Interesting, I would have... 10-04-2019, 09:19 AM

Innovator1 Hi I just PMd you on this... 08-05-2022, 10:22 AM

XCR-700 Just responded, happy to... 08-05-2022, 12:08 PM

BroadHopper Outdrive vs trim tabs. 08-06-2022, 08:45 AM

XCR-700 Mostly the same as I have... 08-06-2022, 10:06 AM

09-27-2019, 03:08 PM	#1
XCR-700 Senior Member Join Date: Sep 2008 Location: MA Posts: 1,342 Thanks: 757 Thanked 538 Times in 313 Posts	Formula boat porpoising Anyone here got experience with Formula boat porpoising??? Ours will do so with the smallest amount of trim on the outdrive. I have never seen a boat tolerate such a low amount of trim (up) from full down. If I use the trim tabs (maybe 3 - 5 dots on the indicator) it will bring the porpoising under control and allow greater trim up, but its a funny balance. Wondering if its unique to the hull (Formula 270 BR) or maybe the stock props are not well suited to our loading and use. BTW its a Mercruiser 8.2 Mag/Bravo 3 twin prop (stock) Any thoughts are appreciated.