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Author Topic:   235 Conquest
gutsandglory posted 08-17-2006 09:55 PM ET (US)   Profile for gutsandglory   Send Email to gutsandglory  
With my Verado 250 @4425 rpm's I'm doing 24, 25 mph. Opened all the way, close to 6000 rpm's, 33-35 mph. Seems a little sluggtish to me. Anyone with this boat have any comments?
BarryGreen posted 08-18-2006 07:50 AM ET (US)     Profile for BarryGreen  Send Email to BarryGreen     
G&G -

My 235 Conquest with 250 Verado does 29+ mph at 4500 rpm and 41 mph at 6200 rpm, GPS numbers. This is with 2 people aboard, full fuel, and the usual load of anchors and other miscellaneous.

I'm running a 15" Rev 4 prop (not the prop Whaler provided initially) with no bottom paint in fresh water, but the above numbers were taken at the end of last season with a somewhat dirty bottom.

What are you running for a prop; I'd guess that's the problem.


bsmotril posted 08-18-2006 11:17 AM ET (US)     Profile for bsmotril  Send Email to bsmotril     
I would be suspect of any speed numbers coming from a source other than GPS. Speed from a pitot tube like the ones built into the Verado gearcase are notoriously inaccurate.
BarryGreen posted 08-18-2006 11:42 AM ET (US)     Profile for BarryGreen  Send Email to BarryGreen     
Bill -

In this case the "Verado" numbers come from a paddlewheel in Mercury SmartCraft System View (SC5000) rather than a pitot tube, but I do agree. At very slow speeds the Verado system may be a bit more accurate due to the tiny deltas available from GPS, but above trolling speed GPS is the only way of getting accurate speed numbers.


gutsandglory posted 08-18-2006 10:47 PM ET (US)     Profile for gutsandglory  Send Email to gutsandglory     
My figures were from the paddlewheel being my GPS unit was removed for repairs. I am determined to recheck with GPS.
As far as the bottom goes; my boat was bottom painted in May with an anti-fouling paint. The boat has sat in salt water this season, getting very lite usage. What kind of buildup on the hull should be expected, if any. Should I pull the boat to examine and/or clean the bottom?
nooner posted 08-27-2006 01:57 AM ET (US)     Profile for nooner  Send Email to nooner     
you can hire a diver to scrape/clean the bottom of your boat.
oroseiwhaler posted 08-27-2006 05:39 AM ET (US)     Profile for oroseiwhaler    
if your bottom was painted with a good antifouling it will be cleen. If there is some buildup they used very cheap antifouling or you have your boat in very warm and barnacle infested water. Good antifoulings will least at least one year in a warm brackish water (the worst one, the best will least 2 years with some periodic polishing with the scotch brite pad.
Some small barnacles can be scraped off with a scotch brite pad using mask and snorkel. Using a scraper could risult in ugly scratches in to the antifouling and gelcoat. If you still will use a scraper, grind off the sharpe edges left and right of the blade, this will help to avoid scratches.

Anyway, only a thick layer of barnackles and mussels will slow down your boat like yours, so i guess theres something wrong with your mecanical speedometer.

Best regards


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