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Thread: Chine walk speedboat
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08-29-2019, 12:31 PM #31Junior Member
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08-29-2019, 01:10 PM #32
looking for distance from end of boat bottom,,,,,thats where the lifting strake ends and at hulls full width of the wetted surface
to the end of the hull where the jack plates bolt to,,,,that distance looks 12" -16" long
then the jack plate offset from hull to motor,,,,, looks to be 5-6" plates
that total length of the 2 will give the starting point of how high to set prop centerline to offset distance
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08-29-2019, 01:21 PM #33Junior Member
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20” and 5,9”
thanks for helping.
Have tried to find props but no luck yet.
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08-29-2019, 01:50 PM #34
last set of 30 mazcos I sold 500 for the pair,,,some out there some want a lot for old school props
but descent priced 1s don't last,,,lol
approx. 26" offset to bottom
now they only stepped up the offset looks to be 1"
to use the offset to hold transom up when landing off a wave
but aerate while props hooking,,,
lots of theory in these hulls,,,,
if go off of the rule of thumb of 1" rise to every 12" of set back ur starting point is 2" of propshaft centerline to bottom of hull
I would still start @ 1 3/4" and go up as needed
where the strake ends not the extension box but true boat full bottom
here is a pic of the trips with custom 4 blade cleavers
22" offset so center was 1 3/4 above,,,outside were only 1 1/4" as needed the grip in the rough and turning as boat was so skinny
and aerated outside props more when were higher,,,,finding set up is key
Last edited by johnmiffco; 08-29-2019 at 02:07 PM.
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08-29-2019, 02:12 PM #35Junior Member
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Wow. Thats look cool.
i was out and measured and when jack is at the lowest propshaft is 1” above bottom. Then i can raise it 4-5”
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08-29-2019, 02:22 PM #36
raise jack plate 3/4" to start and find some cleavers
as u cannot have props lift bow as them big steps has no hull in water if bow is up
for steps to do their job transom has to be planted
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08-29-2019, 02:32 PM #37
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Glasstream15 liked this post
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08-29-2019, 02:33 PM #38Junior Member
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Ok. Thank you very much for help.
Its my first outboard so i dont have so much knoledge.
I have to measure that at propshaft and look at the gauges inside where it goes so i can find the position when i drive.
Hope this works. Little chine walk on gloss water is ok. But now it hits surface from one side to other.
Its Little dangerous.
will try it on rough water too then if it feels more safe.
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08-29-2019, 02:41 PM #39Junior Member
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08-29-2019, 04:19 PM #40
thats what im talking about
15" 300x motors set up
would be a blast to drive across the sloppy waters,,,,,
may want to call builder they already did the work on the 32
so can give u height for sure and prop suggestion,,,,,,Last edited by johnmiffco; 08-29-2019 at 04:23 PM.
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08-29-2019, 10:33 PM #41Junior Member
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08-29-2019, 11:04 PM #42Junior Member
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I found a pair of 14.5x30 cleavers here in marketplace. But they are maybe to big ?
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08-30-2019, 01:51 PM #43
if u looking at the pair 30 mazco cleavers for 600
really good price for em
mazcos I found had better bite in the midrange,,,just a couple mph slower than a merc cleaver
with that light hull and 260 motors probably can pull em,,,
worst case senerio have em pulled back to 28 if cannot get rpms up
u have 250 hp on cowls
what motors do u have
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08-30-2019, 02:00 PM #44Junior Member
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Yes. But now i maybe have found 28p in sweden. And have found other 28p so i think thats what im gonna buy.
Dont really know much of the motors. Did not get much info from the italian when i bought the boat. It was good price on it so i did not care so much. I think they are 2.4L carb. Think they are old but rebuild 8 hours ago.
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08-30-2019, 09:08 PM #457000 RPM
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I'm sure its been mentioned, but you can't balance a boat on calm water without a pad. It'll always chine walk looking for a place to balance. Sharp v is good for cutting through slop.
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