Pics of our Boats
01-13-2012 | 02:48 PM
#331
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From: 1 Flu Ovr KuKos Nest-WI
01-13-2012 | 03:04 PM
#332
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From: San Diego
Find out the distance between the input shaft CL and propshaft CL of a standard drive (22.5?). Subtract the distance the propshaft is below the running surface at neutral trim.
That'd be true X, telling where the inputshaft/crankshaft CL are located on the transom relative to the running surface ahead of the drive. This also affects trim leverage.
It's been a while but I think my X is 19.5 which would put my engines 1.5" higher than yours and with a -1 lower my propshaft CL is 3" below the running surface of the boat effectively giving me an adjusted? X of 20.5"
I think it's something like that. Doesn't really matter because no way in H*** I'm changing it!
That'd be true X, telling where the inputshaft/crankshaft CL are located on the transom relative to the running surface ahead of the drive. This also affects trim leverage.
It's been a while but I think my X is 19.5 which would put my engines 1.5" higher than yours and with a -1 lower my propshaft CL is 3" below the running surface of the boat effectively giving me an adjusted? X of 20.5"
I think it's something like that. Doesn't really matter because no way in H*** I'm changing it!
My drives cl are about 4 inches below now with the 1' spacers.(all side water pickup holes but 1 are above center line of boat bottom.) So about 3 stock. so -2 will give me 1 inch below the bottom cl. But my drives are 34" apart. So about 19.5 is my x too. minus 2 will be about 17.5 x right?
Last edited by mcprodesign; 01-13-2012 at 03:26 PM.
01-13-2012 | 04:20 PM
#336
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Joined: Jan 2002
Posts: 702
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From: Southern, IL.
I was 42 when i bought my first boat, a 20 ft. Celebrity,
it was great too.
good luck .
01-13-2012 | 05:06 PM
#337
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From: Renton, Wa
I'm lost
My drives cl are about 4 inches below now with the 1' spacers.(all side water pickup holes but 1 are above center line of boat bottom.) So about 3 stock. so -2 will give me 1 inch below the bottom cl. But my drives are 34" apart. So about 19.5 is my x too. minus 2 will be about 17.5 x right?
My drives cl are about 4 inches below now with the 1' spacers.(all side water pickup holes but 1 are above center line of boat bottom.) So about 3 stock. so -2 will give me 1 inch below the bottom cl. But my drives are 34" apart. So about 19.5 is my x too. minus 2 will be about 17.5 x right?
Meaning, with a stock drive your crankshaft CL would be 21.5" above the running surface....so to speak. It just tells manufacturers where a stock drive propshaft is relative to the hull. Now with the shorties available you can put the engines lower for better CG but still keep the propshafts higher.
01-13-2012 | 06:49 PM
#338
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From: San Diego
Thanks for the info Rob. This is page 34 so maybe I will be able to spin a set of 34's when i get this dialed.. Her's a pic of my ride again 
C'Mon' April!!!
C'Mon' April!!!
Last edited by mcprodesign; 01-13-2012 at 07:39 PM.
