On Sun, 25 Jun 2006 03:43:47 +0000 (GMT), chris potter <[EMAIL PROTECTED]> wrote:
>I think I am correct in saying that proper marine engines were rated on the >BHP at the output shaft. >My own modest unit is rated at 12 bhp and was manufactured in 1968 it was >designed for small fishing boats but the first unit for sale was my engine No >6. It was installed by the engine manufacturers and the prop chosen was >17"X17" to give me a maximum speed of 8 knots on deep unrestricted water. A >friend installed one (No.16) in his 40 ft steel narrowboat again with the same >prop. and this gave stirling service for many years eventually ending up in my >possession.The maximum engine revs are 3200 and with a two to one reduction >box gives a maximum shaft speed of 1,600rpm. Some years ago I towed a broken >down 45ft. steel narrowboat on unrestricted waters at a speed that astonished >the owner. Where is the need for some of the massive engines fitted in present >day narrowboats, and 9hp for a bow thruster!. Chris.KP > >NB toohottosleep. I cannot relate to the above. A 17 x 17 at 1600rpm requires a lot more than 12bhp. What is the engine? Richard Nb "Pound Eater" Parkend G+S ------------------------ Yahoo! Groups Sponsor --------------------~--> Check out the new improvements in Yahoo! Groups email. http://us.click.yahoo.com/6pRQfA/fOaOAA/yQLSAA/ygtolB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/canals-list/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
