Struggling to get revs out of my Pro XS 175 4-Stroke on my 618.
Setup is as follows
618 Pro 2011
Merc Pro XS 175 4-Stroke
2x 8ft Raptors on the back
8” Atlas Hydraulic Jackplate
2x Lithiums (1x 24v for Troll, 1x 12v for Sounders)
1x AGM for Crank
Full Tank of Fuel
2 people
normal load
Air Temp 75-80 degrees
I’ve tried the following 3 props, all run close to the same.
I’m trying to gain more revs to get closer to the power band which from what I’ve told us 100rpm down from Max.
best speeds on all 3 are gained with the jackplate completely up and the boat trimmed right out.
it runs beautifully, just the pad in the water.
i just feel like I can’t get the motor high enough, I feel like it should start slipping and losing speed but it doesn’t seem to do so.
motor is rigged as high as possible on the plate allowing 2 bolts at the top, I could move it 1 hole higher but I’d end up with 1 bolt at the top and 2 at the bottom.
Jackplate is 1 hole from the highest position on the boat.
23 Fury
5600rpm
62.5mph
23 Tempest Plus
5700
63mph
24 Bravo 1 FS
5650
62.5mph
any ideas?