Revenge 22 W/D with 2009 250 ETEC Observations

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Author Topic:   Revenge 22 W/D with 2009 250 ETEC Observations

Slippery Eel posted 05-28-2009 09:18 AM ET (US)
I splashed my Revenge with the new 250 ETEC a few weeks ago and have had an opportunity to run it on several trips for about 6 hours on the engine hour meter.
Unfortunately the weather has not been to cooperative for any hard performance data to date. We have been having a lot of persistent winds and hard running tides over the last few weeks.
Having only run the 1998 225 Johnson on this boat when I purchased it in the fall I can say the 250 ETEC turns the Revenge into a completely different boat. No longer is she so squat in the stern when running. I attribute this to the torque of the motor and the weight I removed from the soaked foam in the stern well as well as from around the fuel tank.
I have been running the boat in the back bays in NJ so far and have not ventured out into the ocean as of yet. The channels are fairly narrow and there has been a lot of traffic so playing with the I-Command while underway has been difficult. I have not yet come up with the menu set I ultimately want to monitor while underway without pushing too many buttons and taking my eyes off of the channel markers while avoiding drifting boats and jet skis.
I find that a nice cruise speed is about 3900 RPM and is running about 30 MPH with a fuel flow of 10 GPH. I am not sure if this is good or bad as I don’t have any reference to compare it to.
Last week running down tide I hit 44 mph at 5200 rpm which is actually way faster than I really want to be going in this rig. With the ½ tower and enclosures there is a lot of shake rattle and roll of the canvass and everything on the dash board. I am having a cover made that will attach to the windshield and follow the contour of the helm to the deck. I will then remove the front and side windows leaving only the top for the summer. This change should positively affect the performance of this rig.
I still am not comfortable with fully trusting the fuel measurements as it seems to be sipping fuel and have maybe only used 10 to 15 gallons of fuel so far according the I-Command fuel management.
I am finding that the motor needs to be trimmed below 50% to get on plane and does not really like to run real hard above 50% without what I consider to be more than expected prop slip. My motor was mounted 1 hole up and I am thinking this may need to be dropped back down next year.
The motor is burning the extra break in oil as I added a gallon last week after 4 outings. I am sure this consumption will go down after the break in period.
So far I am totally impressed with this set up. I am glad I went with the 250 vs the 225 just to have the extra punch should I need it.
I can’t wait for this weekend to get back on her. Hopefully I will have more time (flounder season opened last weekend in NJ) and will be able to document some numbers.
So much to learn with all of the new technology :-)
Hutch

jimh posted 05-28-2009 09:57 AM ET (US)
On a Whaler Drive boat with a single engine, the mounting height is already quite high, so even with the engine mounted in the lowest position it will be running at the equivalent of two- or three-holes up. My experience with a 250 H.O. whose gear case is designed for higher running was quite satisfactory with the engine mounted all the way down. At top speed the propeller SLIP was below 10-percent, which is a good target for a single engine on a larger boat.
When you have more data, please present it. Information on the propeller type and model would also be interesting to have.

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Author	Topic: Revenge 22 W/D with 2009 250 ETEC Observations
Slippery Eel	posted 05-28-2009 09:18 AM ET (US) I splashed my Revenge with the new 250 ETEC a few weeks ago and have had an opportunity to run it on several trips for about 6 hours on the engine hour meter. Unfortunately the weather has not been to cooperative for any hard performance data to date. We have been having a lot of persistent winds and hard running tides over the last few weeks. Having only run the 1998 225 Johnson on this boat when I purchased it in the fall I can say the 250 ETEC turns the Revenge into a completely different boat. No longer is she so squat in the stern when running. I attribute this to the torque of the motor and the weight I removed from the soaked foam in the stern well as well as from around the fuel tank. I have been running the boat in the back bays in NJ so far and have not ventured out into the ocean as of yet. The channels are fairly narrow and there has been a lot of traffic so playing with the I-Command while underway has been difficult. I have not yet come up with the menu set I ultimately want to monitor while underway without pushing too many buttons and taking my eyes off of the channel markers while avoiding drifting boats and jet skis. I find that a nice cruise speed is about 3900 RPM and is running about 30 MPH with a fuel flow of 10 GPH. I am not sure if this is good or bad as I don’t have any reference to compare it to. Last week running down tide I hit 44 mph at 5200 rpm which is actually way faster than I really want to be going in this rig. With the ½ tower and enclosures there is a lot of shake rattle and roll of the canvass and everything on the dash board. I am having a cover made that will attach to the windshield and follow the contour of the helm to the deck. I will then remove the front and side windows leaving only the top for the summer. This change should positively affect the performance of this rig. I still am not comfortable with fully trusting the fuel measurements as it seems to be sipping fuel and have maybe only used 10 to 15 gallons of fuel so far according the I-Command fuel management. I am finding that the motor needs to be trimmed below 50% to get on plane and does not really like to run real hard above 50% without what I consider to be more than expected prop slip. My motor was mounted 1 hole up and I am thinking this may need to be dropped back down next year. The motor is burning the extra break in oil as I added a gallon last week after 4 outings. I am sure this consumption will go down after the break in period. So far I am totally impressed with this set up. I am glad I went with the 250 vs the 225 just to have the extra punch should I need it. I can’t wait for this weekend to get back on her. Hopefully I will have more time (flounder season opened last weekend in NJ) and will be able to document some numbers. So much to learn with all of the new technology :-) Hutch
jimh	posted 05-28-2009 09:57 AM ET (US) On a Whaler Drive boat with a single engine, the mounting height is already quite high, so even with the engine mounted in the lowest position it will be running at the equivalent of two- or three-holes up. My experience with a 250 H.O. whose gear case is designed for higher running was quite satisfactory with the engine mounted all the way down. At top speed the propeller SLIP was below 10-percent, which is a good target for a single engine on a larger boat. When you have more data, please present it. Information on the propeller type and model would also be interesting to have.