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19 December 2016, 00:53
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#1
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Member
Country: USA
Town: Las Vegas
Make: Bombard Commando C4
Length: 4m +
Engine: 50 hp Tohatsu
Join Date: Jul 2015
Posts: 111
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Can Someone Tell Me How These Big Boats Can Beach Without Damage To Outboards
In this video you can see the larger boats with outboards beaching, how do the do this if they have power trim/tilt that most big boats do, my power trim/tilt will not let me do this it will rip my lower unit up and possible tear the motor off the boat.
https://youtu.be/K6V0QL_N2Dk
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19 December 2016, 08:17
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#2
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Member
Country: UK - England
Town: N. Devon
Boat name: (Not Another) Nutkin
Make: Highfield
Length: 6m +
Engine: Outboard, Honda 135
MMSI: 232036183
Join Date: Dec 2008
Posts: 2,046
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So long as the engine is in gear it should let you do this. Power tilt and trim is a ram that holds the engine up, it's the forward force the prop applies that holds the engine against the ram.
Make sure your engine is off, put it in gear and lift the end, you'll be surprised.
Try it out of gear and it'll be a different story.
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19 December 2016, 08:43
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#3
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Member
Country: UK - England
Town: Wild West
Boat name: No Boat
Make: No Boat
Length: under 3m
Join Date: Jan 2008
Posts: 5,306
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Looks like the bigger are Commercial Boats....
.Needs must by the looks of things!...Like said not that difficult on Sand,if your earning and don't mind a few Scatches...That Surf line is defiantly NOT the place to FCK about!... If your gonna Beach...BEACH!
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A clever Man learns by his mistakes..
A Wise Man learns by other people's!
The Road to HELL ..is Paved with "Good inventions!"
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19 December 2016, 08:48
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#4
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RIBnet admin team
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: Tohatsu 30HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 11,627
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Quote:
Originally Posted by treerat
Try it out of gear and it'll be a different story.
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I'm trying to work out why they would have engineered it that way?
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19 December 2016, 10:10
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#5
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Member
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 5m +
Engine: DF140a
MMSI: 235111389
Join Date: Feb 2008
Posts: 12,167
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Quote:
Originally Posted by Poly
I'm trying to work out why they would have engineered it that way?
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Unless it's a mod, there's no connection/interface between gearbox & tilt system afaik. There's a relief valve in the hydraulics that lets the engine kick up if it hits an obstruction (beach!) to try & reduce leg damage. The relief valve only operates at a set pressure, otherwise you wouldn't be able to use reverse gear, the engine would lift.
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Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4: Don't feed the troll
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19 December 2016, 10:19
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#6
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Member
Country: UK - England
Town: Hamble
Length: 9m +
Join Date: Dec 2002
Posts: 2,317
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Quote:
Originally Posted by treerat
Power tilt and trim is a ram that holds the engine up, it's the forward force the prop applies that holds the engine against the ram.
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Not strictly true, as you'd never be able to reverse unless motor had a "reverse lock".
In most systems there's a pressure relief valve built into the powertrim, so that if you strike a submerged object, the motor is able to kick up. Strike it hard enough though, and you'll smash the lower to pieces!
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It is better to remain silent and be thought a fool, than to speak and remove all doubt!
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19 December 2016, 10:20
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#7
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Member
Country: UK - England
Town: Hamble
Length: 9m +
Join Date: Dec 2002
Posts: 2,317
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Quote:
Originally Posted by Pikey Dave
Unless it's a mod, ................
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It is better to remain silent and be thought a fool, than to speak and remove all doubt!
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19 December 2016, 10:25
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#8
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Member
Country: UK - England
Town: Hamble
Length: 9m +
Join Date: Dec 2002
Posts: 2,317
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__________________
It is better to remain silent and be thought a fool, than to speak and remove all doubt!
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19 December 2016, 11:15
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#9
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Member
Country: UK - England
Town: N. Devon
Boat name: (Not Another) Nutkin
Make: Highfield
Length: 6m +
Engine: Outboard, Honda 135
MMSI: 232036183
Join Date: Dec 2008
Posts: 2,046
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Quote:
Originally Posted by Dirk Diggler
Not strictly true, as you'd never be able to reverse unless motor had a "reverse lock".
In most systems there's a pressure relief valve built into the powertrim, so that if you strike a submerged object, the motor is able to kick up. Strike it hard enough though, and you'll smash the lower to pieces!
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So the bigger engines have a valve - is it just the smaller engines that have the lock that has to be moved when using reverse??
Knowing that my tiller versions had one I thought that the remote versions had one but it was within the remotes / gear levers?
Every day we learn.......
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19 December 2016, 11:38
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#10
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Member
Country: UK - England
Town: South Yorks
Boat name: Black Pig
Make: Ribcraft
Length: 5m +
Engine: DF140a
MMSI: 235111389
Join Date: Feb 2008
Posts: 12,167
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Quote:
Originally Posted by treerat
So the bigger engines have a valve - is it just the smaller engines that have the lock that has to be moved when using reverse??
Knowing that my tiller versions had one I thought that the remote versions had one but it was within the remotes / gear levers?
Every day we learn.......
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Yup, if it has ptt it's a valve job[emoji106]
__________________
Rule#2: Never argue with an idiot. He'll drag you down to his level & then beat you with experience.
Rule#3: Tha' can't educate pork.
Rule#4: Don't feed the troll
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19 December 2016, 20:54
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#11
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Member
Country: UK - Scotland
Town: wormit
Boat name: lots of them
Make: various
Length: no boat
Engine: all types
Join Date: Dec 2004
Posts: 632
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They are running them with the manual tilt valve open. You can use reverse with little throttle. They also use a secret product made by a captain Tolley for the transom. Hth.
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19 December 2016, 21:00
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#12
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RIBnet admin team
Country: Ireland
Length: 4m +
Join Date: Feb 2008
Posts: 14,898
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Quote:
Originally Posted by Davie
They also use a secret product made by a captain Tolley for the transom. Hth.
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Yer wile crack, sir!
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22 December 2016, 12:16
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#13
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Member
Country: Other
Town: Iksal village
Boat name: C-Scanner
Make: rib520
Length: 5m +
Engine: suzuki70 df
Join Date: Dec 2016
Posts: 202
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Better manual tilt for those beaches..more shock friendly
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