P33 trim tabs

[canveyrover]

Hi i have just purchased a p33 mark 1 with a v hull . It has fixed trim tabs at the moment.What if any would be the avantage if i fitted verable electric trim tabs.She dose seem to plain bow high at the moment> Also my Turbos only seem to pull 4 P.S.I i have been told thay should be more like 8 P.S.I any one have any comments as to what is wrong .Any help would be much welcome Thankyou

 

[Divemaster1]

Before we can answer, I think we may need some more information;

As a starter for 10 (or 8 ) I suggest ....

1) engines (type / hp)
2) Drive type (sterndrive or shafts)
3) RPM achieved on engines
4) Speed achieved
5) Flybridge or not (Weight)
6) Load - Davits, dinghy, tankage etc.
7) Hull and drive condition (when was she last cleaned, anti-fouled etc)
8) Where is/was she used (river, coastal

 

[canveyrover]

Hi Divemaster thank you for your replie.Engines Ford Mermade 130 hp Turbo on shafts rpm 2300 16.5 knots bum clean .Ithink she goes 5.3 tons.She used on the east coast .I have now found the port Turbo clamp to be broken,have a new one on order .The Turbo had affectively came apart, working but lots of black soot in the enging room.As i said i have just got this boat so am just lerning abuot it.

 

[Divemaster1]

Have a look here ... and I wonder if your engines are the same .... Turbo Fours, which I believe should have higher RPM at WOT than what you achieve? ... but turbo clamp could account for a lot of that..

http://www.ybw.com/forums/archive/index.php/t-315035.html

 

[oldgit]

Had V hull P33 with pair of AQD40A (130 HP) on 280 hydraulic T&T sterndrives.Best ever speed after fresh A/F relaunch was 16 knots.
Had a set of Bennett trim tabs which made virtually no difference to speed (half a knot ?)and precious little to trim.