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  1997 CONQUEST 23 Converted To Twins From Single Is Stern Heavy

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Author Topic:   1997 CONQUEST 23 Converted To Twins From Single Is Stern Heavy
LTS 23 CONQUEST posted 03-07-2009 09:21 PM ET (US)   Profile for LTS 23 CONQUEST   Send Email to LTS 23 CONQUEST  
[I] have recently purchased a [1997] [Boston Whaler CONQUEST 23] which had the original [225-HP OMC] on it[.] [I] found the boat handled well, dry, but it was lazy. [I] went for a motor upgrade[.] [I] upgraded to a pair of 150-HP E-TEC motors, which [I] love[.] [I]t is a completely different boat[.] [I]t is no longer lazy[.] [E]conomy is good, around 44-LPH combined at 25-nautical miles per hour[.] [T]his is with 17-inch REBEL three-blade. [T]his is where my problem comes in[.] [I]n confused seas the boat is real touchy, [too] fast, [too] slow, on the plane[,] [off] the plane[.] [A]s many other 23 conquest owners have writen, they can ride hard or solid[.] [T]hey don[']t bang[.] [T]hey pound[.] [I] am quite experienced in boating and have owned many aussie boats which have very sharp dead rise angles, but this has me a bit stumped. [T]he boat has trim tabs and this does help.

[Will] four-blade propellers help[?]

[T]he boats seems to be a bit stern heavy, and now the boat isn[']t riding as well.

Other problem [I] have encountered due to the two engine upgrade [are] water through bilge outlet--easy fix: one way valve; taking water through rear leaky hatches; backing down on fish these hatches suck. [Water] pours in[.]

[A]re new hatches still available[?]

[I]t has taken a fair bit to iron out some problems, but [I] am getting close[.] [I] think the size layout is great[.] [I] actually like it better than the new 235.

[D]oes the newer 235 hull ride a bit softer?

All new to this[.] [W]eb site seems to be filled with great info[.] [A]ny help would be greatly appreciated.

Peter posted 03-08-2009 06:25 AM ET (US)     Profile for Peter  Send Email to Peter     
Turn your caps off.

Did this Conquest originally come with a single outboard? If so, it may have a lead ballast weight of about 400 lbs or so in the stern which is only needed for single outboard configurations. My understanding is that twin outboard configurations did not have the ballast. If this boat had the ballast and you did not remove it, then it would be stern heavy.

LTS 23 CONQUEST posted 03-08-2009 10:48 PM ET (US)     Profile for LTS 23 CONQUEST  Send Email to LTS 23 CONQUEST     
Hi Peter
Sorry about the caps[.] [Y]es the boat had a single 225 OMC outboard[.] [I]f the boat had ballast weight, where would they put it[?] [I]t isn[']t clearly visible anywhere[.] [T]he only spot [I] could think would be under the batteries[.] [A]ny ideas[?]

[C]heers mate

Peter posted 03-09-2009 07:39 AM ET (US)     Profile for Peter  Send Email to Peter     
All accounts I've read suggest somewhere near the batteries. Perhaps another 23 Conquest owner with a single and the ballast kit can say precisely where to look.
Brian7son posted 03-09-2009 09:11 AM ET (US)     Profile for Brian7son  Send Email to Brian7son     
I have a [1998] 285 Conquest. I have used both 3-blade and 4-blade props on the twin outboards. The 4-blade props definitely seemed to give me better stern lift when trying to get up on plane.

Like Peter said, if you have a 400lb ballast weight hidden somewhere in the stern, that would be the problem.

ivansfo posted 03-11-2009 04:11 PM ET (US)     Profile for ivansfo  Send Email to ivansfo     
Check this thread about the 23 ballast kit

http://continuouswave.com/ubb/Forum8/HTML/001785.html

LTS 23 CONQUEST posted 03-14-2009 10:01 PM ET (US)     Profile for LTS 23 CONQUEST  Send Email to LTS 23 CONQUEST     
Thanks for the [replies][.] [A]ll the information posted was all very useful. [I] found the ballast blocks under the batteries: six blocks 30- to 35-kg each[.] [R]emoving them has obviously made a huge difference[.] [T]hanks once again guys[.]
jimh posted 03-17-2009 07:19 AM ET (US)     Profile for jimh  Send Email to jimh     
[Moved to the POST-CLASSIC discussion area. The POST-CLASSIC discussion area concentrates on the Boston Whaler boats which were first designed and manufactured after c.1990.]

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