The Norfolk BroadsThe Norfolk Broads
Username Password
Norfolk Broads Weather

Mon, 11 Apr 2016 7:20 am BST- Light Rain
5 Day Forecast

Wind 2.0 mph @ 40°
48.0°F/8.89°C Humidity 93% Pressure 29.65 (S)

Welcome to The Norfolk Broads Forum
This is THE Worlds Largest Forum devoted to the Norfolk Broads, here you can discuss issues about the Norfolk Broads. Or just somewhere to chat with others interested in the Norfolk Broads area.

Please Help Support The Norfolk Broads Forum
OR

The Norfolk Broads Forum / Broads Boat Owners Q & A / Direct or Hydraulic drive to prop, which is best
login
join
Graphics Off
Search
Forum Members - Book your Hoseasons holiday today, Just call 0345 498 6296

This is a moderated forum Reply to this DiscussionReply to Discussion | Start new discussionNew Discussion << previous || next >> 
Posted By Discussion Topic: Direct or Hydraulic drive to prop, which is best

Similar Threads That Might Help :
HYDRAULIC DRIVE QUESTION| Broken Hydraulic Drive| Dont Let this happen to your Prop Drives!| Dont Let this happen to your Prop Drives!|

-- Page: 1 2

book mark this topic Printer-friendly Version  send this discussion to a friend  new posts last

Captain-Joshie
Mar-17-2007 @ 11:39 AM                           Permalink
reply
edit
profile
send p.m.
Been Posting For a Long Time
Posts: 1677
Joined: Apr 2005
Captain-Joshie
          

Add To Ignore List
Hi All

As you may be aware ‘Blue Skies’ is up for sale at Riverside Boat Sales as we want to get a Hampton Safari 25or Bounty/Broom/Dawncraft 30. Well having always previously owned boats with outboards and as even I wouldn’t think of fitting an outboard to a Hampton, it would mess up the stern on mooring capabilities a bit I think  Playful Wink . I have now 5 boats to choose from!  But my question relates to the drive method Direct or Hydraulic, which is best, what are the advantages/disadvantages of each system?  Also I’ve always used petrol before, trust me to change when ‘Red Diesel’ is about to be phased out Frown , what is the cost of Red Diesel and who provides the best quality and lowest cost on the Broads.

Also anything to beware of when buying a Hampton Safari 25 or Bounty/Broom/Dawncraft 30 I should be on the lookout for?

John

http://www.riversideboatsales.co.uk/viking.html

kfurbank
Mar-17-2007 @ 11:44 AM                           Permalink
reply
edit
profile
send p.m.
Mardles sometimes
Posts: 4048
Joined: Nov 2004
kfurbank
          

Add To Ignore List
Hi John,

I can not answer your question about drive, but on the Northern system then without doubt I would use Boulters for diesel, cheapest and I've never had a problem with the quality. As far as I know, the government has yet yo put in place the framework for switching over from Red diesel and therefore diesel is still at the old price until this happens, which is likely to be mid to late Summer. I guess the best thing to do, will be to keep the tanks as topped up as you can throughout the course of the year.

Keith

billmaxted
Mar-17-2007 @ 12:03 PM                           Permalink
reply
edit
profile
send p.m.
Mudplug Juggler
Posts: 9056
Joined: Mar 2005
billmaxted
          

Add To Ignore List
It all depends with a shaft there is less to go wrong but with the others it is almost certain the the engine will be outside the cabin so it will be quieter.

Bill...

B17
Mar-17-2007 @ 12:14 PM                           Permalink
reply
edit
profile
send p.m.
Lives to Post
Posts: 1457
Joined: Jun 2005
B17
          

Add To Ignore List
Hi John,

Hydraulic drive

Disadvantages.

A definate loss of power on the engine (lower top speed ) and a slower response time.

Much more bits to go wrong, Hydraulic pump motor pipes etc.

Advantages.


Due to the fact that the diesel engine can be situated remotly from the shaft these are often situated outside the accomodation (DC 30 Calypso etc) which makes them a lot quieter in use.

I had a hydraulic drive Calypso for a number of years and the diesel was mounted transversly under the rear boarding area along with the hydraulic tank pump etc with the actual drive unit underneath the flooboards in the rear cabin. She had a Perkins 4108 which is not the quietest engine on the planet but because it was outside the accomodation and she was fwd drive made the noise level when cruising very good.

I must also add that in the 6 or more years we had her we did not have any problems with either the engine or the hydraulic system.

One of my friends now has a Bounty with hydraulic drive and previously a DC 30 and I dont recall him having any probs with his either.

With the boats that You have listed I would say that it may be wothwhile looking at a few Calypsos as well as they are a similar price to the DC 30's.

Fuel

Ludham Bridge and Sutton Staithe are also very good price wise for fuel on the Northern side . Keith has already mentioned Boulters.

Good luck with the hunt and I can definatly recommend the Calypso If you are looking at this particular style.

Rod

You mean the other Starboard then...

BroadAmbition
Mar-17-2007 @ 12:17 PM                           Permalink
reply
edit
profile
send p.m.
Mudplug Juggler
Posts: 11033
Joined: Jan 2006
BroadAmbition
          

Add To Ignore List
Blimey how long have you got?? Condensed version -

With Hydraulic drive there is basically one HUGE advantage, that of being able to site / tuck the main engine out of the way in areas that are impossible for shaft drive, and that is it.

Now then the disadvantages, Hydraulic drives are heavier than a gearbox, they also generate a fair amount of noise / heat. The biggest disavantage (for me anyway) is that they are not maintainance free and they invarably wear out and develop oil leaks, then they start to pong of hot oil! A good method to use is that of

'The less there is and the less gadgets, then the less there is to go wrong'

The choice is of course down to yourself, try speaking to Jason Hatch at SOS24:7 (Also a member of this site).  -  Griff

One of these decades we WILL finish Broad Ambition !!

BOATERS
Mar-17-2007 @ 1:35 PM                           Permalink
reply
edit
profile
send p.m.
Lives to Post
Posts: 1297
Joined: Feb 2006
BOATERS
          

Add To Ignore List
Hi,we have hydraulic drive on our Bounty 28 and find it smoother than our last boat which was shaft driven from the engine which was under the saloon floor.This engine is mounted across the rear of the boat outside the cabin and so are the smells of oil etc which go with it .So far no problems we would look for this on any future boat.

See you down the river,
Roy and Diane

doninicaz69
Mar-18-2007 @ 12:16 AM                           Permalink
reply
edit
profile
send p.m.
Forum Regular
Posts: 154
Joined: Nov 2006
doninicaz69
          

Add To Ignore List
we have got hydraulic drive on our bounty 34 and have had no problems in the six years we have had her you must not forget to grease the grease nipple by the shaft coupling on some systems our friend john cressy of maffett cruisers showed us recently we had no idea it had one and had been cruising for five years without greasing it

PeteSanders
Mar-18-2007 @ 12:38 AM                           Permalink
reply
edit
profile
send p.m.
Lives to Post
Posts: 1298
Joined: Jul 2005
PeteSanders
          

Add To Ignore List
There are commonly two different types of hydraulic drive in use on Broads boats, with a degree of difference between them.  Both use a pump attached to and permanently driven by the engine, a valve block to provide forward and reverse flow, and thus gears, and a motor attached to either a propshaft, or if mounted within the keel, directly to the prop.

Low pressure and high flow type system usually uses a geared type pump and a vane type motor.  The geared type pump (Dowty) is usually responsible for the familiar whine associated with hydraulic drive.  this system gives the impression of a degree of "slip", and thus loss of power between engine and propeller.

High pressure and low flow system uses a piston type pump attached to the engine, a similar valve block for the gears, and a piston type motor.  There is negligible slip with this type of system, transferring more power between engine and prop, and it is much quieter in operation.

Both systems allow the engine to be mounted remotely from the prop, even outside the accomodation and offer a more vibration free operation than conventional drive using a gearbox, as the engine runs smoothly in its rubber mounts independantly of any vibration transmission from the prop or shaft.

Having owned both a safari and currently a Bounty 30, both of which have had new engines and drives, my view is that the hydraulic drive is preferable, but this is of course a matter of personal choice.

Pete

Can we all move on now please ?

BroadAmbition
Mar-19-2007 @ 1:20 PM                           Permalink
reply
edit
profile
send p.m.
Mudplug Juggler
Posts: 11033
Joined: Jan 2006
BroadAmbition
          

Add To Ignore List
Move on?  Where to?

IMHO I was under the impression that John was after views / advice from this great forum to guide him in his choice.

I Didn't realise that a forum regular could decide when enough posting had been done on a given thread /subject. Just goes to show I learn something every day.  -  Griff

One of these decades we WILL finish Broad Ambition !!

AdnamsGirl
Mar-19-2007 @ 2:06 PM                           Permalink
reply
edit
profile
send p.m.
Mardles sometimes
Posts: 3245
Joined: Jul 2005
AdnamsGirl
          

Add To Ignore List
Hi

I think that is actually Pete's signature phrase rather than a request aimed at this thread.


Carol


http://www.broadlandmemories.co.uk

PAGE: 1 2

Home Photo Gallery Days Afloat Contact Us
Chat Room Downloads Norfolk Broads @ Amazon Make My Logo
Shops & Businesses Members Gear Norfolk Broads @ EBay Holiday Calendar
Pub Guide Tide Tables SOS List Popular Threads
2017 Calendar Contest Make A Donation Links Hireboat Info
Norfolk Broads @ CafePress FAQ Broads Quiz Forum Events
Advertise With Us Forum Shop Boating Bits Stickys and FAQs Boating Bits Hirecraft List

 

 

 



Copyright © 2005 Y2KInternet, All Rights Reserved.