Adethefridge
Well-Known Member
Thanks all.....
Fairline Targa 37 max RPM ??
- Thread starter Adethefridge
- Start date
Adethefridge
Well-Known Member
Well I'm over in portugal now, boat is slower than ever ! Had a good look @ it's bottom / drives & they look clean, a little silt/fur but really very little, can't be a prop size issue as it travelled fine in the earlier months of this year, am I right in thinking the supercharger cuts in first & then out about 1,200 rpm? Then the turbo takes over? I can clearly detect the supercharger on the port side engine but unsure about the starboard? but opposite is the case with the turo chargers, can clearly hear it ( slight winning noise ) on the starboard over 1500rpm but cannot detect it on the port engine after the supercharge cuts out? Local engineer looking mid week after we leave...
dj43
Well-Known Member
Just had our boat lifted and bottom cleaned,could not believe how bad it was once out off the water,as others have said I would clean bottom, change fuel filters then re test.
Latestarter1
Well-Known Member
When you did sea trails before taking ownership of the vessel what WOT #'s and top speed did you attain??
Portofino
Well-Known Member
Really need to give the props a proper clean -snorkel+ cake knife .
Superchargers ( kad300 ) cut in @ 1400 rpm and out @ 2600rpm -winning stops and a deep roar takes over as turbos kick in and boat takes off .
Wot same day after annual antifoul (Easter) etc is as VP say up arround 3600 rpm gives 38-have seen 40 on the gps this decreases by August to 3300-ish wot to 32-34 knots .
Props need a good clean+ polish every 4-6 wks
3000rpm early on in the season= 28-29knot cruise.
By Ockober same rpm 3000 =24 knot even with a prop clean .
If its not "normal fouling " then try new air filters -are they asthmatic ?
Hope this helps
Superchargers ( kad300 ) cut in @ 1400 rpm and out @ 2600rpm -winning stops and a deep roar takes over as turbos kick in and boat takes off .
Wot same day after annual antifoul (Easter) etc is as VP say up arround 3600 rpm gives 38-have seen 40 on the gps this decreases by August to 3300-ish wot to 32-34 knots .
Props need a good clean+ polish every 4-6 wks
3000rpm early on in the season= 28-29knot cruise.
By Ockober same rpm 3000 =24 knot even with a prop clean .
If its not "normal fouling " then try new air filters -are they asthmatic ?
Hope this helps
Adethefridge
Well-Known Member
With the overwhelming advise about my dirty bottom, arranged a lift & scrub yesterday & what a difference !!!
Boats back to normal easly on the plain & loads of power
Thanking everyone for there advise.
Adethefridge
Boats back to normal easly on the plain & loads of power
Thanking everyone for there advise.
Adethefridge
Adethefridge
Well-Known Member
Thanks for that, spot on about the props !
Cheers
Cheers
Latestarter1
Well-Known Member
Yes, however you still have not answered the vital question................Are you making engine rated speed at WOT?
PowerYachtBlog
Well-Known Member
A 37 Targa with KAD 44s should do from 35+ knots. A friend of myn did 36 knots WOT out of them in a 2000 build.
What I always scratch my head is that another friend who owns a 37 from 1996 does the same speed with KAD42s 230hp units.
Fairline declared 34-36 knots with 230hp, and 34-38 with 260 units.
According to the max RPMs nos I heard it seems that the correct prop sizes do not seem to exist for a 37 Targa with 260hp in the central med sea.
What I always scratch my head is that another friend who owns a 37 from 1996 does the same speed with KAD42s 230hp units.
Fairline declared 34-36 knots with 230hp, and 34-38 with 260 units.
According to the max RPMs nos I heard it seems that the correct prop sizes do not seem to exist for a 37 Targa with 260hp in the central med sea.