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Old 07-06-2011, 01:43 AM
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X45fun X45fun is offline
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How fast is your X45?

I just got my new 2010 x45 to 20 hours. This means I was able to finally open it up. Found that the top speed is only 37-38mph. I was surprised as I was told it was more like 44 or 45.

Does 38 sound right to you guys?

Boat had no ballast, no passengers, smooth water, tab all the way up, Indmar 400HP. Burns an ungodly amount of fuel (about 15 gallons per hour).

I realize that I did not buy a speed boat and can live high 30's but just wanted to make sure there was not something wrong as my last wakeboard boat hit a solid 45.

Thanks...

Last edited by X45fun; 07-06-2011 at 01:46 AM.
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Old 07-06-2011, 01:56 AM
Cobra Rob Cobra Rob is offline
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I think my speed guage is off but I am also running the 'wrong' prop since it is what came with boat.. but 07 X-45 LY6 (400hp) and wide open its at 5k and it pegs speedometer at 55, so might be even a little more
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Old 07-06-2011, 02:12 AM
FrankSchwab FrankSchwab is offline
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Put a GPS on the boat. There may be a problem with the speedos rather than one with the drivetrain.

An $85 GPS will have far higher speed accuracy than any speedo, with the caveat that it may take 2-3 seconds to settle on the right speed.
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Old 07-06-2011, 02:36 AM
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Plave Plave is offline
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No need to spend any money probably, if you have an iphone or one of the android phones there's a free gps speed app that's perfectly accurate and will do the job to check how close your speedo is.
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Old 07-06-2011, 02:55 AM
Cobra Rob Cobra Rob is offline
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I have been meaning to check with iphone.. I just keep forgetting maybe tomorrow. I would say we also run in a river so there is current but I can peg it going up and downstream.
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Old 07-06-2011, 03:58 AM
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Jerseydave Jerseydave is offline
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Quote:
Originally Posted by X45fun View Post
I just got my new 2010 x45 to 20 hours. This means I was able to finally open it up. Found that the top speed is only 37-38mph. I was surprised as I was told it was more like 44 or 45.

Does 38 sound right to you guys?

Boat had no ballast, no passengers, smooth water, tab all the way up, Indmar 400HP. Burns an ungodly amount of fuel (about 15 gallons per hour).

I realize that I did not buy a speed boat and can live high 30's but just wanted to make sure there was not something wrong as my last wakeboard boat hit a solid 45.

Thanks...
What prop are you running? What is your RPM at wide open throttle?
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Old 07-06-2011, 03:58 AM
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Jerseydave Jerseydave is offline
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Quote:
Originally Posted by Cobra Rob View Post
I think my speed guage is off but I am also running the 'wrong' prop since it is what came with boat.. but 07 X-45 LY6 (400hp) and wide open its at 5k and it pegs speedometer at 55, so might be even a little more
55 mph? I doubt that, check it with a GPS.
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Old 07-06-2011, 11:50 AM
luke_bradshaw luke_bradshaw is offline
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My 07 x-45 w/ 350 gets to 43 or so - might be an issue with the gauge
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  #9  
Old 07-06-2011, 01:20 PM
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X45fun X45fun is offline
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Thanks everyone. All good ideas. I had to leave the lake in a hurry yesterday and did not think about looking at the prop specs. I assume though that all LY6 X45's ship with the same prop??

I have an android so I will check the speed with that. I have the new BIG display so I am not sure if you can add a GPS attachment.

The RPM, if I recall correctly, was about 5k.
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Old 07-06-2011, 02:15 PM
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FourFourty FourFourty is offline
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Quote:
Originally Posted by Cobra Rob View Post
I think my speed guage is off but I am also running the 'wrong' prop since it is what came with boat.. but 07 X-45 LY6 (400hp) and wide open its at 5k and it pegs speedometer at 55, so might be even a little more
Ya, I highly doubt you are seeing 55mph. That boat should be about 43-47mph on a GPS.
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