250 ProXS on a V-Mate II

[boatman4021]

I spoke with Eric Simon on this issue, he agreed that 5% would be about the best he has ever seen. Guys, I'm not trying to put anyone down and I am defiantly not denying anyone's speed. But when you say 0% slip, there is something off somewhere in the math. Maybe prop not what it has stamped on it, gear ratio different than what you suspect, or maybe Tom's a couple hundred off. Not sure what, but something is wrong. I have a 4 blade prop that is stamped 27", when I first got my new boat, couldn't figure out why I had so much slip! On the limiter @ 69mph, turns out the prop is marked wrong! I think it's a 21 or 22.

I hate spell check! Toms is supposed to be r p m s!

 

[Mr. Buss]

Alot of good information and good post's. I am probably going to get slammed for this, but there is no possible way you will ever get anything to hook up to the water 100%. The 0% slip you guys are talking about is mechanically impossible. That is saying that a prop with 28" of pitch will actually move your boat 28" for every revolution with NO loss. Hate to burst anyone's bubble, but it ain't happening.

I spoke with Eric Simon on this issue, he agreed that 5% would be about the best he has ever seen. Guys, I'm not trying to put anyone down and I am defiantly not denying anyone's speed. But when you say 0% slip, there is something off somewhere in the math. Maybe prop not what it has stamped on it, gear ratio different than what you suspect, or maybe Tom's a couple hundred off. Not sure what, but something is wrong. I have a 4 blade prop that is stamped 27", when I first got my new boat, couldn't figure out why I had so much slip! On the limiter @ 69mph, turns out the prop is marked wrong! I think it's a 21 or 22.

I hate spell check! Toms is supposed to be r p m s!

LET IT GO!!!!!!!!


I almost thought about postin up my newest top speed in the predictor, but ill probably hear about how im full of it and it aint possible..

if your gonna pick apart peoples chit do it on S&F, Thats the place for you!

 

[Mr. Buss]

btw, sweet boat kalugs22!!

 

[teamhart2]

LET IT GO!!!!!!!!


I almost thought about postin up my newest top speed in the predictor, but ill probably hear about how im full of it and it aint possible..

if your gonna pick apart peoples chit do it on S&F, Thats the place for you!

easy man, dont think anyones called BS on speeds and dont think they will, GPS is hard to argue with, and for the most part people on here seem pretty trustworthy. A non-heated discussion on making speed/slip/RPM/pitch calculations all add up is picking things apart, but for greater understanding, not ball-busting, curious minds want to know.

as for trying to stop people from discussing something in a forum made for discussing things, particularly in an aggressive all caps manner is only going to make it an off topic, pissing contest, the likes of which we have seen to much of lately IMO

 

[boatman4021]

LET IT GO!!!!!!!!


I almost thought about postin up my newest top speed in the predictor, but ill probably hear about how im full of it and it aint possible..

if your gonna pick apart peoples chit do it on S&F, Thats the place for you!

Ok, for starters, you can kiss my a$$ This sight is suppose to be for support and help others, not for the personal entertainment of a few. If you are going to post, have your facts together! This stuff is not here just for you. There are others who come here looking for advice on how to set up about and they should get advice that has been proven! I challenge anyone to prove 0% slip! I am talking to a couple of companies right now about a prop for my boat and I asked if I could get 0% slip(I already knew better) and they thOught is was some kind of joke! Greg Winter of Cutting Edge props said that the best in the business have to really be on there game to get 5%. So I will say it once again, I am not disputing anyone's speed, but telling about 0% slip will just confuse others into wondering why there's is 10%. If you don't like hearing the truth, then you should go somewhere else, you won't be missed, I promise. I have never posted anything that I can't backup, how about you?DICK!

 

[Great East Predictor]

this thread has taken a bad turn...it should just be about how cool that little boat is with a gigantic motor on the back.
anyone who wants to challenge my numbers, come up to maine and i'll show ya but ya better bring a 30 pack.

 

[Mr. Buss]

Ok, for starters, you can kiss my a$$

If you are going to post, have your facts together!

what facts??? all i said was.. "let it go"

This stuff is not here just for you.

"Captain Obvious"

If you don't like hearing the truth, then you should go somewhere else, you won't be missed I promise.

Thanks for the input, im sure others feel the same about you!

I have never posted anything that I can't backup, how about you? DICK!

Everything i post is a lie!!


im done with this thread, sorry for the higjack, kalugs22

 

[yellowfiero88]

For some reason, I was thinking this thread was about the boat, motor and top speed...........

Again,

I GUESS WE NOW RACE SLIP NUMBERS, NOT GPS SPEEDS.

Sounds like its a great setup and I am sure he would pass the info on to anyone else that ask so they could copy on their boat. Nowhere in here did I hear "Top seceret" Bull5h1t when refering to their setup. If this forum is about helping others, then you pass on the info you have learned along the way to others looking to improve the performance of their boat. In return I am sure others will chime in to return the help.

 

[chrispallen]

For what it is worth on my predictor,

26 pitch Trophy Plus Labbed
2:1 gear ratio
6100 rpm
72 mph

slip calculates at 4%

I really don't care if it is 4% or 400%, what I do know is that the boat flies and runs really good... videos to prove it.. and I do believe that if you just have the lower unit (and not much more) in the water, your drag is pretty minimal at top speed...

I am sure that Kalugs feels the same way, It is really too bad that we are all so far apart.... it sure would be nice to line these boats up and see who really can run with the big dogs...

***Disclaimer, I am not a big dog****

 

[Mark]

Nothing wrong with spirited discussion on an issue where people don't see eye to eye as long as we can refrain from name calling and accusations. Most of this thread has been polite... like we have become used to on this forum. Let's continue the tradition.

Prop slip calculations are far from an exact science especially since most props have a progressive pitch. Some props will even change 'functional pitch' by changing the engine height. Theoretically, 0% slip is impossible, but it is also theoretically impossible for a bumble bee to fly... but they do anyway. A couple of years ago Bass and Walleye Boats did a test on a Stratos with a 225HO Etec. They posted negative slip numbers. Everybody called foul. The editors shrugged and said the 26 Raker II they used had a progressive pitch and on some boats acts like a bigger prop. As I said, people with 700# boats regularly see very low slip numbers. Go for a ride in a Predictor and see for yourself.

 

[yellowfiero88]

***Disclaimer, I am not a big dog****

LMFAO

If we wanted to be big dogs, we prob would not be in checkmates, sorry to say

 

[boatman4021]

My point all along was about sharing setups, but ones that are possible. I really hate to see a first time boat owner throwing away good money trying get something that is not there just because he seen it on the official Checkmate site. Aside from that, I hope everyone can run 90+. Fact remains that there are too many variables to call it an exact science, but when you talk to the experts who rig and race boats for a living, or own a prop manufacturing company and they tell you that anything less than 5% icludes an error somewhere in the formula, that's where I will go for my facts. That's all. Did not mean for this to get out of control or take away from the original thread. Sorry guys. By the way Buss, didn't mean to call you names.

 

[karzrus]

I know I should not bring this back up, now that it is settled down a little and it's off topic from the origional post. But I wonder if the prop guys and big time race guys spend very much time working with light little boats like Predictors, Vmates, or Hydrostreams and the other light boats. I'm sure they must, but wonder if they spend more time on 20-30' and bigger boats.
I don't know anything, but it makes sense that I/O boats would have larger slip#s, O/B better and light little O/B boats the best slip#s possible. It would also make sense that some setup's would surprise even the most knowlegable guys in the business with unheard of numbers. I don't think 0-1% is very likely due to the laws of physics, but a few % could be.

That is a really cool boat kalugs22 and I will have a hard time picking who to vote for this months BOTM as I really like the picture of Jetmates boat too.

 

[bigredinohio]

That's a pretty impressive speed in a V-Mate II! Nice job on the setup.

 

[TheNerd]

Wow, talk about whipping a dead horse.

Still a nice boat.

 

[kalugs22]

I'm loving the heated discussion and I appreciate all your thoughts and concerns

I'm out of town for work and don't have much play time haha...there's nothing "top secret" here i'll be more than happy to help anyone get the most out of there rig. I don't claim to be any expert but we've been pretty successful in setting some boats up and I can only give credit where credit is due and that is to you all and this forum, I have discussed setting my predictor up with quite a few of you and I took everyones ideas and opinions and put it all together and came out a winner. It's how we all learn, I didn't know anything about setting a boat up when I came how with that predictor and 90hp merc inline.

To talk about slip real quick my dad's 85 enchanter with a 2.4 200 and a 25p trophy had 5% slip and that was told to us by a prop guy in texas who we don't know and then stated he wouldn't change anything- 73mph 6100rpm 1.87 gear case...

The gearcase I'm running is definitely a 1.75 and even if the tach is a few hundred rpm off that means I would be hitting the rev limiter which I'm not, could it be 100 off? maybe...the main problem you are fighting with the bigger boats is carrying weight...if my buddy get's in the v-mate I lose 2mph and my "slip" number goes from 1% to 3% in the calculator. My predictor was even worse cause of the engine height I was running more than just myself it couldn't get enough bite to trim out enough to make the boat fly and I would lose 4mph. When your talking about a 700# boat and add a 200# guy that makes a big difference. So you need to figure out how to efficiently carry the weight without alot of positive trim, good bow lifting prop, more setback, etc...

Has anyone tried running a Fury on any of the bigger boats?

 

[WILDMAN]

I ran 3 different 28" props on my 21 Pulsare. I have seen 3 different top speeds , all on the 6400 rev limit, which means 3 different slip rates. The speeds were from 93.3-96.3. Slip rates were 12.7, 11.1, and 8.3%

 

[keith4216]

I don't give a shet what your "slip rate" is. That MPH in that boat is just Badazz. Good for you!

 

[john lamon]

Yup, that 250 looks bad a$$ hanging off the back of that thing

 

[Mark]

Has anyone tried running a Fury on any of the bigger boats?

I have a 25" Fury that I run on my 250 Etec/Starliner. It's a good prop, has less lift than a Trophy or Tempest yet just as fast. Steeper pitch, more like a 26. Some guys have seen big speed gains with them but not on my rig. Still the best 3 blade I have run.
The Rev4 has been my best prop by far on my rig. Fastest, smoothest, grippiest, best lift and great holeshot with enough ventilation. The right fit for the big power and the big honking Magnum gearcase..