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New 179 TRX Prop size
Received my new 179 TRX with the Yamaha SHO 115, spent half a day getting through most of the break in period, that was brutal. Now my issue is hole shot, if i throw full throttle to get on plane it just sits there with the nose up and pushing water for probably 200 yards with rpm's sitting around 2000 - 2800. Once the motor winds out it runs really good but still not more than 32 mph and around 5000 rpm's. It has a stainless 18P x 13 1/8" prop new from the factory, should i continue the break in and see if it starts running better? am i doing something wrong with trim? I start off with full negative trim, i even tried neutral trim and that was worse, i'm not sure it would have even got on plane.
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Sounds like you are not get full throttle. With that prop it should shoot out of the hole and run 47-48 mph, on the new Merc Proxs 4 strokes they are running 24's, and the boats are running 50mph with good hole shot.
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Throttle was something i thought about, i think i need to do a little investigating.
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It appears the throttle opens all the way. I turned on the key and watched the butterfly open and close. I guess i will call the dealer, there has to be something wrong with it. My 2012 mercury 90 would run circles around this thing.
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It appears the throttle opens all the way. I turned on the key and watched the butterfly open and close. I guess i will call the dealer, there has to be something wrong with it. My 2012 mercury 90 would run circles around this thing.
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What hole is the motor mounted on the transom. What altitude are you.
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The motor (if i remember correctly) is in the 3rd hole from the top at 3300 feet. After doing some reading i am beginning to think it may have something to do with the shift position switch, i will have to check that tonight when i get home. It sounds like the switch cuts out cylinders until it is put into gear, so maybe it is only running on 2 cylinders. Which is how it feels at full throttle trying to get on plane. I think i will go over to the yamaha motor section and see what people say until i hear back from the dealer.
I was also wrong on the 5000 rpm's, my brother who shot some video of it showed it at only 4600 maxed out.
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I put this over to the Yamaha forum, thanks for your help jjtriton
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