goeasy123
Well-Known Member
On a biggish yacht with hydraulic genoa and/or mainsail furling where does the pressure come from? Do you have to have an engine running all the time?
How does hydraulic furling work?
- Thread starter goeasy123
- Start date
penberth3
Well-Known Member
No experience of these, but an electric on-demand pump would be one way of doing it.
starfire
Well-Known Member
Exactly that
Daydream believer
Well-Known Member
Same place as it always comes from. Either from the owner , or from the one at the helm
Mind you SWMBO sometimes adds a bit as well
penberth3
Well-Known Member
Same place as it always comes from. Either from the owner , or from the one at the helm
Mind you SWMBO sometimes adds a bit as well
Not very helpful, have you been drinking?
Daydream believer
Well-Known Member
Misery !!!
No, I have NOT been drinking. I have just returned from a 3 hours session at the dentist. But inspite of that I thought that I could still try to add some humour to the thread.
Sorry if it was wasted on you.
I will have a quick glass of scotch though, cos you will probably be pleased to know that it b..y hurts in the mouth AND the wallet
NB
Emojis with HA HA will NOT be appreciated
Moodysailor
Well-Known Member
On smaller hydraulic systems an on-demand pump as mentioned above. The switch activates an electric motor which directly powers a small hydraulic pump (example: autopilot, furling gear).
On the very big yachts, the hydraulic system is usually permanently running as a constant running pump has advantages in these applications. So these ones use a larger motor and pump which is always running and developing pressure, the pressure is 'dumped' back to the reservoir when not needed and a series of valves will divert the pressure through the system as required (example: stabilisers, superyachts).
Some of the larger systems may develop hydraulic power from an electric motor, or via a PTO (power take off) from an auxiliary engine or genset. Engine driven is unusual on smaller hydraulic systems, but common on larger ones where more pressure is required (example: fishing / large commercial vessels).
On the very big yachts, the hydraulic system is usually permanently running as a constant running pump has advantages in these applications. So these ones use a larger motor and pump which is always running and developing pressure, the pressure is 'dumped' back to the reservoir when not needed and a series of valves will divert the pressure through the system as required (example: stabilisers, superyachts).
Some of the larger systems may develop hydraulic power from an electric motor, or via a PTO (power take off) from an auxiliary engine or genset. Engine driven is unusual on smaller hydraulic systems, but common on larger ones where more pressure is required (example: fishing / large commercial vessels).
Bilgediver
Well-Known Member
N0, he has just been stocking up on calories for when he has to pump the emergency hand operated hydraulic pump. It can be hard work!
