Top speed on trophy 185 with a suzuki 175?

[DW]

Here is a Suzuki test report for the df175 on a Trophy 205 http://www.suzukimarine.com/Product%...%20205%20DF175

Top speed 47.5 @ 6200; prop SS 14 5/8 x 21.

You should be able to go 1 to 2 mph faster, and use only a slightly larger prop. 16 will be too big, and 22” pitch at most.

If you look at other board reports of similar size most have a 14.75” diameter. There are a few 16” but they drop 3 to 4” in pitch.

[t05ks]

Trophy 185 with a 175 Yamaha Sho. 9.9 kicker, 3 batteries, full tank, 2 or 3 passenger (doesn't really seem to make a difference) full load of fishing gear, and a full tank. 47.5 Mph GPS (two gps's both said same) 51-52 on the dash speedo. Also, top up or down still about the same. 14.25x17 Reliance prop @ 6k rpms. No, its not a Suzuki but just for a comparison.

[PCDOC]

Not sure what Alumacraft changed, but the new boats are slower. That being said, they ride noticeably better than the older models. Had a 2012 Trophy 195 with a pro xs 175 (kicker, 4 batts) and could hit 46. Now have a 2018 Trophy 195 with the same setup (literally, same motors from the 2012 - I swapped them to the new boat) and can only get 43. Only change is instead of 2 batts in the rear and 2 under the windshield I now have 3 under the windshield and one in the rear.

Adding 70lb toward the aft isn't going to cost you 3 mph, but it rides waaaaayyyyyy better than my 2012 so no complaints from me.