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Old 01 April 2013, 03:22   #21
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LOL

I struggle to be LIGHTLY loaded even with no kit on! all those beer stops take it's toll!
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Old 01 April 2013, 04:20   #22
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No chinewalking, but I had the issue of the port side of Jianna being lower at speed, despite the engine being offset to starboard by 1.5 inches (38mm). I had two heavy batteries on the port side, the idea being to counter balance me, as I often go out alone, sat on the starboard side. Moved the batteries to the starboard side, and whilst I go down the Lymington river (slowly) with the starboad side down a little, at speed Jianna runs level, even with more crew on board. One happy RIB owner.
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Old 01 April 2013, 06:39   #23
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Country: Austria
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Boat name: StormChaser
Make: Humber OceanPro 6.3
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Quote:
Originally Posted by HUMBER P4VWL View Post
Our 6.3 op leans to port when trimmed in, as we trim out it balances up to neutral. Ours too sits v low at the rear, it's just the design. Freeboard on transom is excellent though. Tubes drag slightly in water but gives great stability.

Where are your tanks? We have 140L in console. That should stop chine walking. Ours only just chine walked at 52mph... It's v rare though, we need to be v lightly loaded with no kit on.

The 200 must fly.
mine also has 2x70 liter under console.


52 mph / 83 km/h / 45 kn - this is exactly the speed where it begins with chinewalking.

unfortunatyl this is not the end of speed with the 200HO, but there are still 10 - 15 km/h left which cannot be driven because of the extreme chinewalking.
A little chinewalking I am used to handle, but at about 87-88 km/h it gets so bad that I have to reduce gas.
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Old 01 April 2013, 17:41   #24
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mine also has 2x70 liter under console.

52 mph / 83 km/h / 45 kn - this is exactly the speed where it begins with chinewalking.

unfortunatyl this is not the end of speed with the 200HO, but there are still 10 - 15 km/h left which cannot be driven because of the extreme chinewalking.
A little chinewalking I am used to handle, but at about 87-88 km/h it gets so bad that I have to reduce gas.
Awesome. Not being funny but if you want a 6.3m hull that goes over 52mph, the Humber OP isn't really the horse for the course!! It's a great deep V for the rough with chines and a high sheer bow to keep you dry. Just enjoy it to 52 knowing it will get you there fast and get there 4-6 up. Ours is a little slow once fully loaded, but love it none the less.

Sounds a nice boat.
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Old 02 April 2013, 03:28   #25
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Blimey a 200HO I missed that. Way too much engine for a 6.3 humber. If you had a 175 etec small block you would still get 45 knots and you would have a lot less weight on the back.

Your fuel bill would be lower too !
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Old 02 April 2013, 03:30   #26
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Awesome. Not being funny but if you want a 6.3m hull that goes over 52mph, the Humber OP isn't really the horse for the course!! It's a great deep V for the rough with chines and a high sheer bow to keep you dry. Just enjoy it to 52 knowing it will get you there fast and get there 4-6 up. Ours is a little slow once fully loaded, but love it none the less.

Sounds a nice boat.
thanks,

I already love my Humber, its incredible.
But of course I try to solve the issues as far as possible.
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Old 02 April 2013, 04:51   #27
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For what it's worth mine is the "litrle brother grandad" of yours - a 1984 Hull, 1m shorter, and built to take a 2 cyl (light) 60 of the day.

I also got the lean - but to Stbd. (much worse with my old Yam 55 than the "new" merc clamshell except mine kicked in at about 18 knots! The clamshell is approx 10Kg lighter thwan the Yam was, and due to space constraints my 13Kg Aux is also on the Stbd. No matter how I re-distributed weight I couldn't stop it. The Clamshell (much slimmer leg, also much lighter & with PT can be adjusted on the move it now still leansd slightly to stbd but just moving my weight to my left foot is enough to correct it.

Both engines fitted dead centre.

What I did find was that when I turned the hull over to remove 20 years of antifoul, the last 0.5m has a slight concave which I assume is there as a "built in trim tab"to help lift the stern out. I guess yours will have something similar?


But yeah, chine walking at 45 knots doesn't surprise me!
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Old 04 April 2013, 10:23   #28
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Our dive club had this problem with out Humber OceanPro 6.3m with Suzuki DF140 (although we're propped for 10 divers not speed! max WOT empty is 34kn).

The RIB would lean to port even with 6 divers on board!

Engine is offset 2-5cm ish to Stbd.

I found that raising the engine height on the transom helped, the boat now only leans when trimmed down fully (engine trying to lift stbd transom).

Anti-vent plate is now ~1cm above keel, feel we can probably lift it more too.

My theory:
Too much engine leg in the water was causing lift on the stbd side (acting similar to trim tab).
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Old 04 April 2013, 11:31   #29
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What I did find was that when I turned the hull over to remove 20 years of antifoul, the last 0.5m has a slight concave which I assume is there as a "built in trim tab"to help lift the stern out. I guess yours will have something similar?
Man you are lucky it doesn't porpoise like crazy with this kind of cup in the hull!

I'm no help on the chime walking but the OP's boat sounds like an overpowered deep-V and trying to do 50knts. That's just not sounding like a good idea.
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Old 04 April 2013, 13:07   #30
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Man you are lucky it doesn't porpoise like crazy with this kind of cup in the hull!

I'm no help on the chime walking but the OP's boat sounds like an overpowered deep-V and trying to do 50knts. That's just not sounding like a good idea.
50 knots would be fine, 100 km/h much better ;-).
no, its no problem for me, even occasions to drive WOT with it are quite often, temptation to do it is always there, even I get tears in the eyes looking at the fuel usage at WOT :-).

Unfortunatly water on danube is quite calm most of the time, so temptation for WOT is quite often. at vacation in Croaotia it will be different, here the deep V can show its advantages.

but I see, WOT is dangerous.
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