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Old 28-03-2006, 06:07 PM   #1
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Steering.

Anybody know if the seastar pro head unit is capable of running 2 hynautic side mount cylinders or do I need a capilano helm?
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Old 28-03-2006, 06:35 PM   #2
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Is the seastar pro helm used to run a front mount originally? Everyone i know who runs Side mount rams run capalino helms!
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Old 28-03-2006, 06:42 PM   #3
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Quote:
Originally posted by scottyboy
Is the seastar pro helm used to run a front mount originally? Everyone i know who runs Side mount rams run capalino helms!
Yes it runs a front mounted cylinder.
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Old 28-03-2006, 06:48 PM   #4
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Then dont think it will work ! I rang hypro marine because i was worried about my capalino helm and thought there was a fault with it but i found out that there are different types of helms and i dont have a fault! Balanced and un balanced! Balanced helms normally run front mount cylinders coz they use equal amounts of fluid either way to move! Unbalanced like capalino run side mounted rams coz they require more fluid to move the shaft of the ram out than they do to move it back in!!
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Old 28-03-2006, 08:56 PM   #5
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Cappilano 1250v or 1275 v are balanced and unbalanced pumps.
Hydrive pumps ,the big white pumps (or black later style)with the straith big shaft are balanced pumps,you can use these with front mount or double side mounted rams.
but you have to use check valves with these hydrive pumps.
Cappilano and seastar have check valves built inside the pump.

You can use a seastar pump with 2 side mount rams ,only thing is ,the seastar pump has a smaller volume chamber ,so you have to turn the wheel more to move the engine as with a cappilano.
The cappilano is a heavy duty unit ,the seastar is a more pleasure unit.
I would opt for the cappilano 1250v or 1275v .
The cappilano pumps are pricey,but its a quality pump.

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Old 28-03-2006, 09:14 PM   #6
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So what actually happens if you use a balanced helm with a non balanced ram?
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Old 28-03-2006, 09:16 PM   #7
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Bad stuff.
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Old 28-03-2006, 09:35 PM   #8
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The Seastar Pro helm is for balanced rams only and wouldn't have the throughput for two side mount rams anyway.
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Old 28-03-2006, 09:36 PM   #9
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Ooohhh Dear! Thats why i get paranoid about my steering and dont touch it!
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Old 28-03-2006, 09:43 PM   #10
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Quote:
Originally posted by scottyboy
So what actually happens if you use a balanced helm with a non balanced ram?
When you are trying to fill the steering system with oil,and trying to get the air out by turning the wheel you,ll find out that the wheel is stuck to one side ,had it myself with a Hydrive pump and a Latham ram,so I swich the Hydrive for a 1275v capilano and problem solved.

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Old 28-03-2006, 09:43 PM   #11
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Don't fck around, buy a matched set. Personally, I don't like front mount rams, you have a single, small, difficult to check point of failure and goodnight vienna. But WTF do I know, I've got sterndrives. And no, I've not just fitted an imco brazil valve, mayfair rams, imco caps, and jcb hoses to it. OK.
I "suspect" you could "maybe" run an unbalanced helm on balanced rams, but doubt a balanced helm on unbalanced rams would work - suspect it would lock up.
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Old 28-03-2006, 09:46 PM   #12
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Yeh, what sterling said.

Sterling, that ultima your mate has (or is it yours?) - Is the motor a world products 454cu 600hp crate motor?
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Old 28-03-2006, 09:58 PM   #13
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Quote:
Originally posted by Johnny Boat Dude
The Seastar Pro helm is for balanced rams only and wouldn't have the throughput for two side mount rams anyway.
What exactly do you mean with :throughput ?
It makes no difference for the amount of oil volume if you have 1 or 2 rams .
The oil in 1 ram feeds the second ram.
And you can just connect the 2 rams together with a hose .
So when the oil leaves the ram behind the piston(small volume)
it feeds the second ram behind the piston (also the small volume side)

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Old 28-03-2006, 10:03 PM   #14
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Okay I see what you mean. But the Seastar Helm doesnt pump enough fluid per revolution for the larger side mount cylinders such as the Lathem and Marine Machine anyway. You would end up with like 7 or 8 turns lock to lock, maybe more.
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Old 28-03-2006, 10:05 PM   #15
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Depends whether you connect them in series or parallel.
I would have thought series would be a right pain though.

Quote:
Originally posted by sterling
What exactly do you mean with :throughput ?
It makes no difference for the amount of oil volume if you have 1 or 2 rams .
The oil in 1 ram feeds the second ram.
And you can just connect the 2 rams together with a hose .
So when the oil leaves the ram behind the piston(small volume)
it feeds the second ram behind the piston (also the small volume side)

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Old 28-03-2006, 10:08 PM   #16
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Quote:
Originally posted by Matt
Yeh, what sterling said.

Sterling, that ultima your mate has (or is it yours?) - Is the motor a world products 454cu 600hp crate motor?
The Ultima is from my mate,s customer .
It was equipped with a 350 GM fuel injected engine 385 hp or so.
The customer wanted more power my mate built him a new engine .
This engine is a stroked SBC 383 ci, solid roller cam ,trick flow alu heads,DTA programmable motor management.
its a high compression engine ,and revs to 7000 rpm and it was
pulling 590 BHP on the dyno.

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Old 28-03-2006, 10:08 PM   #17
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Quote:
Originally posted by Matt
Personally, I don't like front mount rams, you have a single, small, difficult to check point of failure and goodnight vienna.
Single point of failure on the side mount rams too its just a bit more accessible thats all.
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Old 28-03-2006, 10:11 PM   #18
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I knew you'd mention that.
Much bigger dia bolt, into a much thicker threaded component and a lock nut on the bottom. And if you have twin side mounted rams - QED.
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Old 28-03-2006, 10:17 PM   #19
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No one runs twin side mounts on an outboard. Wing plates generally are not threaded like the O/B tiller arms and the Seastar setup has a lock nut on the bottom too. So its all just down to a smaller bolt at the end of the day and as i've said on many occasions just get yourself an ARP item as they're far far stronger than a standard stainless bolt.
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Old 28-03-2006, 10:17 PM   #20
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Quote:
Originally posted by Johnny Boat Dude
Okay I see what you mean. But the Seastar Helm doesnt pump enough fluid per revolution for the larger side mount cylinders such as the Lathem and Marine Machine anyway. You would end up with like 7 or 8 turns lock to lock, maybe more.
The seastar pro 2,4 has a 39,9 cc volume /rev
The capilano1250v has 22,8-55,7
I have a 1250v on my cat ,and I have the variable volume valve halfway ,I do not like the heavy steering feeling that you get when you set it at max volume .
So I think the seastar will do fine ,I have no idea how many turns you will get ,but you can measure the big volume side from a mayfair ram by filling it with oil and divide it through the pumpvolume.
I never tried to hook twin side rams to a seastar pro pump ,but I have no doubt it will work .

sterling
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