Speed vs. Rope Length

[lohe]

Also 60' seems short on the rope.

[h2osk8er00]

PP will hold a speed like 21mph. OR rpm. The speed one is a lot more accurate.

Nice... How much would it cost to replace the old stuff though...? I had the one the boat came with it.. it is still wired.. has power.. but is the oldest one they probably make.. guess I'll check out their website.. thanks for the help lohe..

[bobbysky]

I ride 85' at around 25 mph give or take a half mile an hour. We run a good amount of weight though around 4000lbs. And with my 14 x 14.25 prop I run around 3800rpms. And to who said running over 4000 rpms would hurt your boat it's not bad for them at all, a small block will run 4000 rpms all day long. But fuel consumption that's a different story.

But if your having problems clearing the wake with the new prop try speeding it up to 3300 rpms and see if that helps. I also agree that 60' rope is way to short. I rode that when I was 13 behind an old MC prostar 205. I would say you at least want to be 70' to 75'.

[h2osk8er00]

I ride 85' at around 25 mph give or take a half mile an hour. We run a good amount of weight though around 4000lbs. And with my 14 x 14.25 prop I run around 3800rpms. And to who said running over 4000 rpms would hurt your boat it's not bad for them at all, a small block will run 4000 rpms all day long. But fuel consumption that's a different story.

But if your having problems clearing the wake with the new prop try speeding it up to 3300 rpms and see if that helps. I also agree that 60' rope is way to short. I rode that when I was 13 behind an old MC prostar 205. I would say you at least want to be 70' to 75'.

Sounds like we are running the same exact prop.. I think mine is the Acme 1847... Crazy.. are you operating at sea level too? I'm going to go home and mesure my rope tonight... as gay as that may sound.. haha

[bigdaddy_houseboater]

Wow.. 3500 for wakeboarding? Does it cost more in gas with the new prop?
I think my kid wakeboards at about 2400 in ours, but Im propped higher too.

If you are going by your RPM, absolutely it's messing you up.

I just changed my prop on my boat as well. (we have the same boat unless you have the blue V-drive)

I went with a ACME 911 and now wakeboard RPM for my son went from 2700RPM to 3500RPM (or thereabouts)

Basically, adjust speed until the wake whitewash is just behind your board .

[Fiveflat]

Yes, fuel bill sucks this year for sure!

[cver6321]

all you have to do is go into the settings on your PP and change the rider and user settings to show you MPH vs RPM's.... MPH is much more accurate, and you will never have to mess with it again if you ever change props, it will compensate for you.

[bobbysky]

yea I'm at sea level. My prop is a 1433, but the 1847 has the same exact specs????

[h2osk8er00]

yea I'm at sea level. My prop is a 1433, but the 1847 has the same exact specs????

Everything except for the cup size.. how is your hole shot on that thing and what is your WOT u think?

[whitlock87]

I think the older perfect pass units had the paddle wheel. Newer PP uses GPS.
Hole shot in my boat is amazing, even with 1800lbs of weight. Top speed is less than desirable but tolerable. I won't go much over 4000RPM for fear of hurting my motor and I'm around 28MPH.

WOW
that gota kill your GPH

[robert theisen]

If i have no weight in the boat i go 21 to 21.5 for smooth water on a 70 ft rope.22.5 on a 75 foot rope and 22 on a 70 foot in rough water.When fully weighted with 2000 lb pro ballast i go 24.5 mph on 80 foot rope and if we have more than 2 passengers 25 mph on 85 foot rope.I usually set taps on 6.Hope this helps.But with all that said i can look at the wake and tell my wife how much to speed up or how many numbers to go up or down on taps

[h2osk8er00]

Just measured my rope.. 65 feet... Might be my problem?!?!

[lohe]

Ya that's a little on the short side.

Does your PP still display the speed you are going. Btw the previous owner upgraded the PP on my boat to the gps based version I think they send you a new display and module I think it was 4-6 hundred for the upgrade.

You really need to know the speed your are going even if you get a hand held unit then check that against the RPM. Your speed should be between 18-25 depending on rider weight rope length etc.

[lohe]

What you can do drive at 21-22mph and start letting rope/handle out until it's in the best spot of the wake. (before the wake is washing out)

[bobbysky]

I'm pretty sure I would hit the rev limiter if I pushed it all the way wide open, the most I've gone with it is 40mph at 5100rpm. Didn't want to push it any further. Most the time I'm driving, but for people that are driving it I just tell them not to go wide open when we are unloaded. 30mph is plenty fast.