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Apologies in advance for the long post.
We have a Tideline 190 single engine powercat. Suzuki DF150 2.5 gear ratio. Powertech OFX4 19. Weights about 3000 lbs fully loaded with family. Boat has bottom paint.
Great boat. Would not change anything except we’re not getting the same cruise and top end performance numbers as other owners running the factory setup or the Suzuki test. Link below.
http://www.suzukimarine.com/~/media/...9%20DF150.ashx
With an OFX4 19 pitch the boat should top out at 41mph @ 6000 rpm and cruise at 22mph @ 3500 rpms.
Slip should be under 10% from 3500 rpm up.
In stock trim we have never seen above 34mph @ 5400 rpms @ 51% trim or 36mph @ 5750 rpms @ 100% trim. Prop does not vent or blow out even at 100% trim WOT.
Correspondingly we can not maintain a plane, even lightly loaded below 3900-4000 rpms @ 21mph without ventilation jumping rpms around 100-150.
We have tried moving the engine up a hole, two different props, adding a permatrim, taking the permatrim off etc..
Results:
RPM/MPH/SLIP%
Stock hole 2 from top OFX4 19
3800 rpm ventilation
4000 rpm 21 mph slight venting 27% slip
4500 rpm 26 mph slight porpoise 19.7% slip
5400-5500 rpm 33-34mph 50% trim 14.5% slip
5700 rpm 35 mph 100% trim 14.6% slip
Adding permatrim
3600 rpm 19.2mph 25.8% slip
4600 rpm 27.5mph 16.9% slip
5400 rpm 33mph 50% trim 15% slip
5750 rpm 36mph 90% trim 13% slip
Permatrim off raised to highest mount, Kens suggestion before buying a new prop.
5600 rpm 35.2 mph 58% trim 12.6% slip
5750 rpm 36.5 mph 100% trim 11.7% slip
Permatrim off raised to highest mount, switched to OFS4 17 pitch
3600 rpm 19.8 mph 0% trim 14.5% slip, minor venting
3750 rpm 21.8 mph 23% trim 9.7% slip,
5700 rpm 34 mph 50% trim 7.34% slip
6000 rpm 36.5 mph 100% trim 5.5% slip
The 17 pitch OFS4 grips well, almost no slip, no blow out in turns but some minor venting down wind where the OFX4 didn’t on the highest hole. The trade off with the 17 OFS prop is the added stern lift without the bow lift this boat likes to run efficient. If I trimmed out to get the bow up where it normally was on the OFX it would start to vent a little.
I have read that older Powertech props may have had quality control issues with pitch. The OFX19 is a 2009 from what I can tell on the Serial Number.
I would like an efficient cruise speed 3500-3600 rpms, with no venting while carrying a full load, and still be able to be around 6000 rpms WOT at or around 40 mph. Maybe this is to much to expect...
Questions:
1. Does it seem like the OFX4 19 is really a higher pitch, 20 or 21?
2. Should I try to find someone with a “good” OFX4 19 to try.
3. Should I try another prop like the Rev4?
4. Should I put a 4in setback Jackplate and run the OFX4 19 I have just higher to get the RPMs up and lower when downwind/waves?
5. Just buy an OFX4 17, lower the motor back down a hole, put the permatrim back on and call it a day?
6. Try finding an OFX5 18 and see if that is the best compromise?
Hope Ken and the group can guide me in the right direction.
Appreciate the comments and advise in advance.
PS. If there are any other Tideline 19 owners reading this would REALLY love to hear what your running and have to say.
We have a Tideline 190 single engine powercat. Suzuki DF150 2.5 gear ratio. Powertech OFX4 19. Weights about 3000 lbs fully loaded with family. Boat has bottom paint.
Great boat. Would not change anything except we’re not getting the same cruise and top end performance numbers as other owners running the factory setup or the Suzuki test. Link below.
http://www.suzukimarine.com/~/media/...9%20DF150.ashx
With an OFX4 19 pitch the boat should top out at 41mph @ 6000 rpm and cruise at 22mph @ 3500 rpms.
Slip should be under 10% from 3500 rpm up.
In stock trim we have never seen above 34mph @ 5400 rpms @ 51% trim or 36mph @ 5750 rpms @ 100% trim. Prop does not vent or blow out even at 100% trim WOT.
Correspondingly we can not maintain a plane, even lightly loaded below 3900-4000 rpms @ 21mph without ventilation jumping rpms around 100-150.
We have tried moving the engine up a hole, two different props, adding a permatrim, taking the permatrim off etc..
Results:
RPM/MPH/SLIP%
Stock hole 2 from top OFX4 19
3800 rpm ventilation
4000 rpm 21 mph slight venting 27% slip
4500 rpm 26 mph slight porpoise 19.7% slip
5400-5500 rpm 33-34mph 50% trim 14.5% slip
5700 rpm 35 mph 100% trim 14.6% slip
Adding permatrim
3600 rpm 19.2mph 25.8% slip
4600 rpm 27.5mph 16.9% slip
5400 rpm 33mph 50% trim 15% slip
5750 rpm 36mph 90% trim 13% slip
Permatrim off raised to highest mount, Kens suggestion before buying a new prop.
5600 rpm 35.2 mph 58% trim 12.6% slip
5750 rpm 36.5 mph 100% trim 11.7% slip
Permatrim off raised to highest mount, switched to OFS4 17 pitch
3600 rpm 19.8 mph 0% trim 14.5% slip, minor venting
3750 rpm 21.8 mph 23% trim 9.7% slip,
5700 rpm 34 mph 50% trim 7.34% slip
6000 rpm 36.5 mph 100% trim 5.5% slip
The 17 pitch OFS4 grips well, almost no slip, no blow out in turns but some minor venting down wind where the OFX4 didn’t on the highest hole. The trade off with the 17 OFS prop is the added stern lift without the bow lift this boat likes to run efficient. If I trimmed out to get the bow up where it normally was on the OFX it would start to vent a little.
I have read that older Powertech props may have had quality control issues with pitch. The OFX19 is a 2009 from what I can tell on the Serial Number.
I would like an efficient cruise speed 3500-3600 rpms, with no venting while carrying a full load, and still be able to be around 6000 rpms WOT at or around 40 mph. Maybe this is to much to expect...
Questions:
1. Does it seem like the OFX4 19 is really a higher pitch, 20 or 21?
2. Should I try to find someone with a “good” OFX4 19 to try.
3. Should I try another prop like the Rev4?
4. Should I put a 4in setback Jackplate and run the OFX4 19 I have just higher to get the RPMs up and lower when downwind/waves?
5. Just buy an OFX4 17, lower the motor back down a hole, put the permatrim back on and call it a day?
6. Try finding an OFX5 18 and see if that is the best compromise?
Hope Ken and the group can guide me in the right direction.
Appreciate the comments and advise in advance.
PS. If there are any other Tideline 19 owners reading this would REALLY love to hear what your running and have to say.
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