Here is a post I found on another boating forum. The poster is "John from Illinois" who previously posted here on a regular basis. He is well respected for his knowledge of outboards......<br /><br />I had the opportunity to attend a dealer meeting in Stuart, FL last week and driving boats was part of the meeting. I thought I would share my thoughts on how some engine/boat combinations performed.<br /><br />The first ride was in the "infamous" 29 Angler with twin 225's - A counter rotating DI Evinrude on the port side and a 4-Stroke Yammie on the starboard. This boat set-up made its debut at last years Miami Boat Show. This craft was driven by one of the field reps (BTW Rowdy, Mr. Eves says "hey") and he actually had some positive things to say about the competitions motor. Both motors are propped to turn their manufacturers max w/ OEM stainless 3-blade props. When the boat left the slip, the Yammie was the only engine running - you could only tell, by the sound of the tell-tale hitting the water - VERY quiet, until Pat shifted it into gear, it made a very loud "clunk", no apparent shifting tricks either. Next he fires up the Evinrude - yup, it drowned out the quiet of the 4-stroke. With both engines running, the boat accelerated onto plane in a boat length and a half (6 people on board). Both engines quickly reached max rpm as they were trimmed out and the boat cruised into the sound at 54/55 MPH. There was no noticable torque steer and the boat tracked straight. The Yammie 4-stroke seemed noisier than the Evinrude at WOT.<br /><br />Next, both engines were throttled back to about 3500 rpms. We could converse in normal tone of voice at this rpm. The throttle was advanced on the Yammie and the boat quietly and slowly surged to port. The Yammie was throttled back to 3500 and now it was the Evinrudes turn - when the throttle was advanced the boat jumped to starboard and a couple of us actually had to catch our balance, the torque on the DI is instantaneous. We also played around with minor throttle changes between 3500 to 4500 rpms, the Evinrude does "growl" right around 4-grand, but one of the dealers says "Its the sound of power."<br /><br />For the next part of the demo ride, the boat was stopped, the Evinrude turned off and trimmed out of the water. The throttle of the Yammie was dropped, the bow came up and we plowed water for a full minute and a half. A couple of us even clawed our way to the bow - we couldn't force the boat on plane. Next, you guess it, the roles are reversed... Trim the Yammie up and drop the hammer on the Evinrude - about 17 seconds later, the boat IS on plane (nobody walked up to the bow in an attempt to transfer weight forward), building up speed (made it to 32/33 MPH).<br /><br />This boat has also been rigged with the 225 Honda 4-stroke in place of the Yammie, we're told it performs the same way with the Honda.<br /><br />Stay tuned for more (I'll add to this thread as my time permits). And if anyone has questions, fire away.<br /><br />Later,<br />John
