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Old 03 June 2008, 16:18   #11
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Country: UK - England
Town: Torbay
Boat name: Marlin
Make: PBS humber 5.5
Length: 5m +
Engine: 115 optimax!!
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Quote:
Originally Posted by Alex Brown View Post
Hello,

I was just talking with Jono about this in the lock at Milford on Sunday afternoon!!

Trim the engine up pretty much as high as you can and you should find the "lean" will go - my Destroyer does this if the engine is any further down than the 3/4 trim position.

-Alex
same here - spot on
Great boat by the way
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Old 03 June 2008, 16:29   #12
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Country: UK - England
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Boat name: rubber duck
Make: humber
Length: 5m +
Engine: mercury 115 opti 08
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Posts: 40
Hello Alex,nice to here am not the only one to have this happening.Did not think the trim would stop the leaning when it was happening and look forward to trying it out.Also the engine does not look to have been fitted offset which prob isnt helping,thanks!
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Old 03 June 2008, 16:42   #13
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Country: UK - England
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Boat name: rubber duck
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cheers Colin,how long did you spend running the engine in?was told ten hours,almost there and have started to open it up,what a rocket!was doing 43mph with 3 in at about 5100-5200rpm and still had a couple of mph in it.What prop did your engine come with?
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Old 03 June 2008, 17:23   #14
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Country: UK - England
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not sure on prop, if jono garton or ian sharlott see this, they'll give you the answer. mine has made 41.5 knots at full whack, although it did start to chine walk then. plenty fast enough for me!! didn't dare look at the rev counter then
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Old 03 June 2008, 17:28   #15
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Country: UK - England
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mine has a black prop,just wondering if yours is the same or ss
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Old 03 June 2008, 17:34   #16
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Country: UK - England
Town: Warwickshire
Boat name: True Blue
Make: Humber ocean pro 6.3
Length: 6m +
Engine: Mercury 150 opti
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Quote:
Originally Posted by Colin F View Post
not sure on prop, if jono garton or ian sharlott see this, they'll give you the answer. mine has made 41.5 knots at full whack, although it did start to chine walk then. plenty fast enough for me!! didn't dare look at the rev counter then
It is a Black max, Can't remember if it was 19p or 21p but would guess at 21p.
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Old 03 June 2008, 18:09   #17
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Country: UK - England
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mine has a black prop,just wondering if yours is the same or ss
decided to go for an ally one, i can't remember the pitch of it either
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Old 04 June 2008, 03:57   #18
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Country: UK - England
Town: Mudeford
Make: Humber Ocean Pro 5.3
Length: 5m +
Engine: 90ho Tohatsu
Join Date: Apr 2005
Posts: 137
sounds like chine walk to me. using the trim will should sort it at speed. Nice boat by the way. I have the 5.3 Ocean pro with a 90, would love to have the 115 on it, would go like a rocket. Do you know what kind of lph you getting at full speed?
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Old 04 June 2008, 04:08   #19
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Country: UK - England
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hopefully out tonight so will let you know
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Old 04 June 2008, 08:01   #20
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Country: UK - Scotland
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My 90hp was fitted by Humber. Offset about 2 inches. Made it go straight with the trim tab thingy on the engine. I have never had any leaning problems with the boat. Strong beam winds make it heel, as all boats do.

Steering can lock up at anything more than a fast tickover if the engine is trimmed in/down too much. (Easy to do as the transom is raked and my trim guage no longer works - I have to turn round and look ) Trim up/out and the problem disappears.

Not sure about the wisdom of using hydraulics to overcome the results of bad trim, I'd have thought it wouls put enormous strain on the engine tiller (or whatever)
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