flatwater Posted May 12, 2017 Report Share Posted May 12, 2017 Looking for a 21P 4 Blade for my 250 Verado. Also If anyone has a prop that they have run on this engine and liked let me know. I am new to the Mercury world! Thanks 727-304-0224 Link to comment Share on other sites More sharing options...
Mitz Posted May 12, 2017 Report Share Posted May 12, 2017 rev4 and I've just done a lot of testing on the bravo 1 FS and really like that prop but a 21 pitch rev4 will spin around 200/300 rpm less than a 21 bravo FS. Unfortunately not that easy to say I need a 21 pitch 4 as they can vary greatly. What boat is it on? What prop is currently on the engine...? Link to comment Share on other sites More sharing options...
flatwater Posted May 12, 2017 Author Report Share Posted May 12, 2017 17 minutes ago, Mitz said: rev4 and I've just done a lot of testing on the bravo 1 FS and really like that prop but a 21 pitch rev4 will spin around 200/300 rpm less than a 21 bravo FS. Unfortunately not that easy to say I need a 21 pitch 4 as they can vary greatly. What boat is it on? What prop is currently on the engine...? 2110 Action Craft coastal bay tower boat with a 250 verado. I know I know not an MBG product. Ran it last night for the first time and I was only seeing 42 to 43 mph. I was told I should be seeing 52-54 mph. I need to see what rpm's I was running at WOT as I'm sure that will paint a better picture of what I really need to do prop wise. Link to comment Share on other sites More sharing options...
Mitz Posted May 13, 2017 Report Share Posted May 13, 2017 It's ok I have a contender bay now haha. Yeah def get those rpm figures and then pull that prop. Def doesn't sound right. Gps confirmed speed? Link to comment Share on other sites More sharing options...
OlivierHPS2300 Posted May 13, 2017 Report Share Posted May 13, 2017 Mitz.. What boat did you have before your contender? Link to comment Share on other sites More sharing options...
Mitz Posted May 13, 2017 Report Share Posted May 13, 2017 94' 17 MA w 115 yam pro v 2smoker, then 02' 18.5 MA w 175 hpdi Link to comment Share on other sites More sharing options...
Tarpon1215 Posted May 13, 2017 Report Share Posted May 13, 2017 You can re hub the ofx in this section of the classifieds. Link to comment Share on other sites More sharing options...
flatwater Posted May 15, 2017 Author Report Share Posted May 15, 2017 On May 12, 2017 at 8:02 PM, Mitz said: It's ok I have a contender bay now haha. Yeah def get those rpm figures and then pull that prop. Def doesn't sound right. Gps confirmed speed? Ran it this weekend. I was getting 5600 rpm at 43 MPH WOT. According to Mercury I should be getting 5800-6400 RPM WOT range. Any Ideas on what I should do. I am running a 3 blade 19P Link to comment Share on other sites More sharing options...
Mitz Posted May 15, 2017 Report Share Posted May 15, 2017 If u have the 1.75 gear ratio you are at 25% slip or if it's the 1.85 gear ratio then it's still 21% slip. Have a jackplate? What model prop is it? A merc or? Link to comment Share on other sites More sharing options...
flatwater Posted May 15, 2017 Author Report Share Posted May 15, 2017 23 minutes ago, Mitz said: If u have the 1.75 gear ratio you are at 25% slip or if it's the 1.85 gear ratio then it's still 21% slip. Have a jackplate? What model prop is it? A merc or? 1.85 ratio. Yes I have a jackplate and it looks like a Merc prop Link to comment Share on other sites More sharing options...
Mitz Posted May 15, 2017 Report Share Posted May 15, 2017 Only a few 3 blades from merc it could be. Prob a mirage which is 15.25 dia. Sounds like it's worn out. I'd look at trying a rev4 in 17 pitch. But call Ken at prop gods to see if he has data on your boat/motor combo Link to comment Share on other sites More sharing options...
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