On Mon, 10 Nov 2008 09:12:03 -0000, "Julian" <[EMAIL PROTECTED]> wrote:
>OK firstly Parglena will stop in her own length from canal speed with ease, >that is on of the reasons that I stayed with 6cyl rather then 4 when I >re-engined. Also starts well ........:-) That would be nice .... >What would I do in your case? >Move the shaft up, fit a cavitation plate over the prop and go for at least >a 30" prop, It looks like the shaft was dropped many years ago and I can see >why it was done, to make it easier to run the barge with no cargo because a >higher/bigger prop may well have led to cavitation problems hence my >thoughts on fitting a cavitation plate. I would also prefer to see the Prop >closer to the stern post as even though there is a tube round the shaft it >will still put a lot of strain on the shaft and bearings if you increase the >size of the prop. > >One thing that will happen is that with a bigger prop and more thrust you >steering will become very heavy as there is no counterbalance on the rudder. >Ill try and remember to email you a photo of the underwater part of Parglena >when I get home Thanks for that. I am in discussions with the yard to see if they can get a crane big enough to lift the barge out and raise the shaft. Unfortunately the only dry dock we can use is miles away and has long queues, so a crane at the yard would be much more convenient. Photos would be very welcome. bjg
