Shipman 28 engine for hydrolic drive

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egil289

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Hi there all shipman 28 owners.

My boat has no engine for now but still have that hydrolic drive unit on the propeller shaft. Has anyone an experience in fitting a modern diesel engine with a hydrolic pump to power such a drive unit.

I rather fancy fitting say a turbo diesel of say 30 hp so that it can propel the boat at hull speed quietly but also produce a lot of juice in 12 and 220v for running all anciliaries and provide central heating !
:)
I would be grateful for any comments.

Happy new year.

Gilbert.
 
Had a hydraulic drive on a Bukh 20 fitted to a Hurley 30. VOAC pump on plate mounted where the gearbox used to be. Standard hydraulic pipework to the header tank, switchgear and another, larger pump on the end of the shaft. Beautiful sysytem but hellish expensive. The drive was transfered from the engine shaft to the pump by a custom made pair of castings with a high density rubber shock absorber inbetween.
 
egil289 said:
Hi there all shipman 28 owners.

My boat has no engine for now but still have that hydrolic drive unit on the propeller shaft. Has anyone an experience in fitting a modern diesel engine with a hydrolic pump to power such a drive unit.

I rather fancy fitting say a turbo diesel of say 30 hp so that it can propel the boat at hull speed quietly but also produce a lot of juice in 12 and 220v for running all anciliaries and provide central heating !
:)
I would be grateful for any comments.

Happy new year.

Gilbert.
Click to expand...

30hp is far too much - even allowing for the greater losses of the hydraulics. Turbos are generally no-nos for yacht auxiliaries.

If you want to go down that route and have hybrid power then AR Peachment who are the Nanni agents do all the bits. However, it is likely to cost you more than your boat is worth! Better to junk all the stuff you have and fit a 16hp Beta or Nanni with a calorifier for hot water, 75amp alternator and biggish battery bank - more than enough to meet all your requirements - but still a big spend, around £5-6k depending on how much updating of existing kit such as stern gear, exhaust, fuel system and electrics required.
 
I've got a Shipman re-engined by the previous owner with a Sole HDMI17 diesel of 16hp. This was done professionally by Sims Marine of Warsash.

If I've got things right the original hydraulic pump and drive, prop etc. were all kept, along with the fuel tank and alternator. The original engine mounting points were used but an engine bed, connection for the hydraulic pump to the engine and some other parts had to be manufactured. The original throttle control is used with a new engine instrument panel installed on the cabin rear bulkhead. The engine is in fact installed off center, made possible by the hydraulic drive.

If you wish to retain the hydraulic drive you might want to check into the possibility of obtaining spare parts for it. I understand this is possible as they are based on standard non-marine parts, but I haven't checked myself.

Cost of the installation in 2008 was about £2800 (much of this was for the manufactured parts), plus the cost of the engine.

Rod
 
When a friend retired to go sailing, the company that he worked for was a large producer of excavators and presented him with a spare hydraulic drive for his boat instead of a clock.
 
Almost any Hydraulic supplier should be able to get the right sort of pump, adaptor plate for the engine and all the other bit's & pieces. You will also need a Large tank for the hydraulic oil - again the supplier should be able to advise size etc.
Year ago I used a company called BYPY in Ludlow for all our hydraulic drives on diesel engines and they were very good - not sure if they are still around though - yes, here they are:- http://www.bypy.co.uk/index.php
I always liked hydraulic drives but make sure you get the correct rotation pump! Guess how I know - the hydraulic oil gets pumped into the engine and it then runs on oil belching out huge clouds of white smoke and it won't stop.......... until you rip off the airfilter and put your hand over the inlet!
Don't go for a turbo diesel - always use the KISS principle where boats are concerned - 20/25HP should be more than adequate.
Good luck and keep us informed of progress.
 
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