I have a 2020 721 with a 2020 mercury 4 stroke 250 , 3 blade fury 24 p ,8 ' power poles , 3 helix 10s, 1 garmin 10 ,ultrex 112 , 36 volt lithium, 2 12 v lithiums ,and an agm cranking battery and atlas 8 " hydraulic jackplate. 68 to 70 mph top speed at 5700 ish rpms. What prop is everyone running? Is this normal speed loaded with 1 person, full livewells and gas tank??
Take it to your dealer and have them check the linear throttle to make sure its getting 100%. You should be turning more rpm's.
If you're not familiar with high speed bass boats, let someone drive it that is. That boat should be doing 75+ all day long.
2020 721 4stroke Merc 3 12volt ionics and 125ionic one helix 12 on dash one helix 12 and one helix 10 on front humminbird live and 360 on 112 ultrex running 24 fury b@b from croxton 12 bobs two 8 ft blades and a small tackle shop on board and 25-30 rods I know I'm like a lot of guys on here I got problems anyway 74-76 with just me 74 most every day with two people 6000 rpm until it gets humid southern Indiana
basically same set up and numbers with mine except 4 lead batteries and a 10" hydro jack plate. just put a fury 25p 3 blade on it that was BB and cupped by croxton and got another 2 mph out of it. lost 150 RPMs from the 24p furyOriginally Posted by tcfeedmill
I've taken to the dealer, getting 100% throttle. Let someone else drive it and 72 is top speed at 5850 rpm. I lost bow lift somehow. Seems to not trim out as far as it did before. Nothing has changed in weight,prop etc. Wondering if i should drop down to a 23p to gain rpm
An 8" plate seems a little short. Most are running 10's and even 12's. Sounds like you have a good bit of weight on the nose and not enough in the back. You need to get the RPM's up above 6K. I moved to a 23P Fury 3B to get my RPms up to 6080. I am now trying a 24P Temp+ because they are supposed to carry the nose better but we will see. I'm getting 74.5 @ 6080 with more lift by myself....hopefully maintain that with partner in the boat
2019 721 ProXs 4S 250
2B599739
i heard if you're running poles you gain nothing with a 12" plate. i have basically the same setup except 10" bobs hydro and poles and 76 mph solo and 74 mph with partner and we total around 500 lbs. This is in Texas.
Reply With Quote