Tritoon speed
- Thread starter T0bird
- Start date
Give us your RPM at wide open throttle and tell us if you were lightly loaded or heavy load in boat. We need that information first.
Check Toons for cleanliness and no water in them. If you can look and see if you motor is mounted the lowest point or what hole it's in. I'm not sure but 19 seems like a large pitch for that motor but maybe not.
Vikingstaff
Moderator
Do you have a SPS tritoon hull? What make/brand prop? Condition of pontoons (clean)? RPM at WOT? Load (# of people, fuel level, gear) and water conditions (calm)? These are all important details. Cannot guide you too much without them.
Those questions aside, you are incredibly over propped!!!! You likely should have a 14-15p prop. 19p is waaaaay too much. Your rpm range at WOT is 5000-6000.
If everything gets properly taken care of and dialed in, that should be in the 42-45mph range at WOT on a light load running as close to 6000rpms as you can get it.
The rpms are around5500 the motor is bottom hole the toons are fairly clean no water in them I have 40-50 gallons of gas and just me and wife on boat
The rpms are around5500 the motor is bottom hole the toons are fairly clean no water in them I have 40-50 gallons of gas and just me and wife on boat
The cheapest thing to do first is to raise your motor 1 or two holes. If you boat is on a trailer this is easy to do. Block your tires on trailer, place wood or blocks from ground up to your lower unit. Remove the bolts that are in the threaded holes, just LOOSEN the sliding bolts. Now go to the front of your trailer and crank your trailer up using your swing jack on trailer. This will raise the motor (Easier with two people) Use a marine silicone in bolt holes, put bolts in and tighten and also tighten the sliding bolts. Test your boat and check the RPM's and speed. I still think your prop is pitched too much though even though you are 5500 rpm.
Vikingstaff
Moderator
Okay, some nice feedback. So pontoons are clean and no water in them. Check! Based on fuel tank size that you mention, you must have an EPS tritoon hull. What model Bennington? Sport tower? Given your RPM’s, I am thinking model/boat/fuel weight are coming into play too.
That aside, you are over pitched in prop. Again, way too large of a pitch for a 200 HP motor. No maybe about it. So, you can 1) tweak motor mount height like Scott describes above. That may help a bit. Just test for ventilating in turns to try to find the sweet spot for less lower unit drag without compromising turning.
Next, change that prop if you want more speed. Good news is you are at 5500 rpms, so you are not over stressing the motor. So you can save money and stay where you are at and just sacrifice top end speed. But if you want to go faster, go smaller with that prop. Possible get a better prop designed for your performance goal. Do you want to dial in top end speed? If so, switch to a SWSII or Enertia prop. Those two are the best.
Based on your RPMs, I’d recommended trying out a 16p Enertia prop. Still more than I would have suspected, but based on your RPMs, might get you right to the top of your recommended range.
That aside, you are over pitched in prop. Again, way too large of a pitch for a 200 HP motor. No maybe about it. So, you can 1) tweak motor mount height like Scott describes above. That may help a bit. Just test for ventilating in turns to try to find the sweet spot for less lower unit drag without compromising turning.
Next, change that prop if you want more speed. Good news is you are at 5500 rpms, so you are not over stressing the motor. So you can save money and stay where you are at and just sacrifice top end speed. But if you want to go faster, go smaller with that prop. Possible get a better prop designed for your performance goal. Do you want to dial in top end speed? If so, switch to a SWSII or Enertia prop. Those two are the best.
Based on your RPMs, I’d recommended trying out a 16p Enertia prop. Still more than I would have suspected, but based on your RPMs, might get you right to the top of your recommended range.