HOW FAST IS YOUR CHECKMATE? EVERYONE!

[Adam L.]

I just took a customers new 2007 2100 out today to break it in. After 3 hours we opened it up. It ran a little over 73 on Gps with two of us in it. As you can see by the pic, the Mercury speedo was a little optimistic. I took the pic with one hand while trying to drive with the other.

That is a Beautiful boat. Love the white and yellow. Do you have any other shots of it?
Why is it that speedometers can be so far off? You would think the manufactures could calabrate them to be more acurate. Whats the point of having a non-gps speedo if it just lies to you. Theres a big difference between 73mph and 83mph. Dont get me wrong 73 is scooting along quite nice

 

[boatman4021]

I have found that on stock speedo's, even the water temp. will can make them read higher or lower. It's hard to beat an in dash gps speedo! boatman

 

[mboger]

1997 242 with a 7.4 and 5lbs of boost from a procharger turning a labbed 28 bravo one gps was 70.9 with half a tank of gas me and wife in it and full of gear

 

[illMATTic]

I have found that on stock speedo's, even the water temp. will can make them read higher or lower. It's hard to beat an in dash gps speedo! boatman

my faria speedo is dead on up until 70 or so then the pitot breaks away.

 

[bluehealer]

1995 Pulsare 21

Closed bow,1999 225efi with the following mods:
-Rapair 250 ecu(rev limit 6450)
-300 air box(cowling mods to make fit,underside only)
-300 flywheel
-300 heads
-Wayne taylor reeds
Only ran once with the promax heads for about 10 minutes.Before the heads with all the other mods gps73.7 with a 23 Tempest at 6300rpms.After the heads 77.8 with a 26 4-blade yammi at 5700 rpms.I didnt have any more props with me,but naturally i needed to get my r's up to develop the horsepower i'm looking for.Put away for the year but i know there's 82mph in there.
Anybody need a 26 yammi 4-blade(it was checked out by Aquaholic)
$200 tyd.
Chris

 

[F150GT]

89 Starflight with Pro-V 200 Yamaha turning a factory 25P Yamaha prop at 5800 rpm, me alone - 71.4 GPS. I'm happy with that.
F150GT

 

[rcamp]

1997 283 twin 502/efi 29p Factory labbed mirage plus props. Tested yesterday 6" to 1' chop. 4900 rpm @ 80.1 mph gps. 2 adults full gear 1/2 tank gas. Factory speedo 86 mph. Hoping to see 85 mph gps with Stainless marine exhaust and Arizona Speed upgrade. Love this boat.

 

[bigchuck]

still new to here i have a 78 checkmate trimate with a johnson 115 t&t it runs 65 on a good day

 

[boatn70]

EDIT (to post #45 or so!)

242 Convincor
66 degrees
November 8th, 2006
83.6 best, 82.2 several times
procharged 502, 5psi boost

changed to 26 bravo to get the rpms up to around 5800, got em right there!!
plus the cooler temps im sure helped out!!
the midrange with the 26 is absolutely outrageous!!! pulls like you wouldnt imagine!!!! holy chit!!

 

[Lang]

1980 Predictor II
2003 Johnson 115 4stroke
26p SS prop.
No jack plate
Runs 55MPH (ish) no GPS...I think it does a little more with a tail wind, and I sit up straight...ha

Not too bad for a 115.

Was hoping to get some advice (eventually) on getting the bottom of the boat worked on (not doing it myself)...Gel/paint or whatever.

 

[claupie]

my faria speedo is dead on up until 70 or so then the pitot breaks away.[/QU i have seen in the past a stainless pitot ..does anyone know who sells them.i was told they dont break away,is that info correct ???

 

[ffighter405]

ok guys. I am new to this and need help, I have a 82 entertainer with the merc 260 (350 chevy) so i am told,, it also have a marage 23p 3 blade prop, i want to know about how many RPM's this should run, the most i can get out of it right now is 3000 to 3100.. rpm's.. help me or am i expecting to much from this? Of course i am wanting it to be fast, what else. LOL.. and yes i use it for tubing and skiing..

 

[Big Dave]

Merc says 4400 to 4800 wot
you should be able to pull a 23 to 41-4200 fairly easy
something else is wrong or prop is bad

 

[stclairriverblaster]

well today went out and i got a top speed with two people in the boat of 61.5 mph. gps verified.

rpm was about 4900

prop is a high five. five bladed prop. not sure on pitch.

my big ass was in it 360 lbs

and my buddy.. 150lbs.

a full tank of gas

is that about right?

 

[Jamey]

1980 Entertainer I/O, 260 hp Mercruiser ... quadrajet 4bbl carb. 60 mph GPS but it gets there in a big 'ole hurry. I have a Solas 21p aluminum prop. My stainless 21p prop was pretty banged up, but with it on I believe I might see 62-63 mph. I haven't tried running it with the windshield or bow tonneau cover on. Tonneau cover is dry rotted and I haven't had it remade.

 

[dlcss396]

87 eluder gps speed

Gps 93 mph (on the trailer)

67 MPH GPS with Stock 260 merc I/O With 1/4 tank Of gas, light load, windshield and bow cover on. SS prop.

 

[zstevens]

91 pulse 185 w 175 merc 91 w 21p lsaer ll 63 w 4 blade alm. 55 both w half fuel loaded w all gear cooler wife n 2 or 3 kids ! as stated b4 i run the slower of the props better all around .

 

[ffighter405]

Thank you very much!!! At least I now know what to expect.. i would guess that i need to work on trimming the boat better, Stock engine SS 3 blade marige 23p prop,,, i would say its the operator. LOL oh well live and learn!!!

 

[Jamey]

Ffighter, you got any pictures you can post of your Entertainer?

 

[Chris E]

had the predictor up to 60mph - that was on the highway behind the van though!