going on Thursday to pick up a 2016 xpress h18 with a 115 SHO.. for the guys that run this setup, what kind of performance numbers are you guys getting? what is the ideal prop, it also has a manual jackplate. what is the ideal height for the motor. thanks guys!
I have that exact boat. I run a 19” ptr3 on a 6” hydraulic jack plate. I got 47mph (gps) before the jack plate, 46 mph with but gained 200rpm. Tried a 21” turbo 1 prop and it was too much for the 115, lost to many rpms. 46-47 mph is fast enough....
I’d like to try the new prd3 prop when it becomes available. It is supposed to be a copy of the yamaha pro.
After trying the 21” prop I am very happy with how the 19” performs. With gear and myself it will hold 6200rpm all day. Add another person and gear and I still run fast enough and sit at about 5600-5700rpm.
With the jack plate I have found that this H18 likes a lot of trim to get on full pad. Keep that in mind when adjusting your jack plate.
Last edited by T4Rhin0; 03-27-2018 at 06:13 PM.
A lot of guys really like the Mercury Spitfire X7 with that engine on boats that run around 50mph.
2015 Yellowfin 21 with 2014 Yamaha SHO 250
I don't think those boats are Xpress pad hulls.
I read it as h18 bay but it doesn’t say “bay”.
My post above is what I have experienced with my H18 Bay.
Awesome thanks for the info.. I’m not sure what prop is on it now. I know it’s stainless haha which is a start lol
Ah ok the one I’m getting is a h18 bassOriginally Posted by T4Rhin0
Should still be similar. It has the hyperlift hull right?
Yes the H series are pad hulls.
XPRESS H 18 SS, YAMAHA 115
I have the gray 115 and with aluminum 21p stock prop I get 48 gps.
XPRESS H 18 SS, YAMAHA 115
Yes the H 18 is a pad hull. My post was in response to the post saying Spitfire X7 props were recommended. They give stern lift and pad hulls especially Xpress pad hulls need bow lift to take full advantage of the pad. I am on my second Xpress pad hull and have owned 9 glass pad hull bass boats.
I have the same boat, running a 21p Yamaha pro series prop on a 6 inch jack plate set at 3.5” pad to prop. I get 52-53 mph running 6200 rpm easy, that’s with an added 3rd battery, onboard charger and minn Kota talon. Full load with two guys, drops down to 48 mph. You’ll see a lot of guys recommend the pro series props from Yamaha because they are a bow lifting prop. The 18p powertwch prop that comes factory on these boats aren’t great.
ok thanks looks like I will probly get that 21-22 p Yamaha pro prop sounds like I have the same boat! lol I’m running a 3rd battery and a talon as well!
Hmmm. I may have to try this. Im runing 3.75 pad to prop with my 19 pitch power tech PTR3 and alone I can only turn about 5700-5800, add another passenger and I'm Down to about 5600-5700. Max speed alone is about 47, with another person about 44. I do feel like I need a little more lift, maybe that Pro series will help me get that.
edit: Im on Simyamaha and I don't see a pro series prop for a Yamaha 115 four stroke.
Last edited by Troy1985; 04-10-2018 at 01:38 PM.
I wouldn't think the Pro fits the 115. It's made for V6 engines with the larger crankcase.
2015 Yellowfin 21 with 2014 Yamaha SHO 250
Power tech is supposed to be making a pro copy for the D-class outboards. It’s the PRD3. I’m having a hard time getting them to say much about it other than they are currently testing the design.
There are 2 different Yamaha Pro Series props ........ one is the standard V6 size version that ends in 'M' (like 23M for a 23",25M for a 25", etc). Then there is a 'mini' version that is designed for mid-range HP size gearcases like the 2-stroke and 4-stroke inlines and the older V-4's. These props are known as the 'K's. So the pitch for them will be like 19K,21K, etc.
Hope this helps.
'09 Ranger Z520 Silverado Edition / '09 Evinrude ETEC 250 HO
'15 Xpress HD16DBX / Merc 59ci
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