----- Original Message ----- From: "Brian on Harnser" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, November 07, 2008 9:34 PM Subject: [canals-list] Re: Props
> Brian J Goggin used his keyboard to write : >> On Fri, 7 Nov 2008 20:33:15 +0000, Julian Tether >> <[EMAIL PROTECTED]> wrote: >> >>> Parglena has 120hp and a 23x16IIRC 80% aspect blade, made by Crowthers >>> of Oldham there is only 1" between the counter and the tip and the same >>> between the skeg and the tip. It all works fine. >> >> Excellent. Thank you. >> >> It has been suggested that with a small prop there is no point in my >> getting a larger (say 130hp) engine. But would the extra hp be useful >> for braking, turning etc? >> >>> From what you say there is plenty of clearance above the blade as for >>> below if you are worried about clearance you could fit a drop skeg >>> (provided the waterways are deep enough) which would involve very little >>> modification. >> >> Loads of room above the prop. Most of the waterways we're likely to go >> on have enough water for our 4' draft but low summer levels could be a >> problem. The other drawback to a drop skeg would be when dry-docking, >> although we might be OK if we lined it up properly (there's really >> only one dry dock we can use). The other thought I had was to replace >> the current box-section skeg with a thinner bar, supplemented by >> another bar well above the prop to help hold the rudder in position. >> >> Incidentally there are pics of the prop etc amongst other things on >> http://www.pbase.com/bjg/big_iron > > That prop looks like a fly on an elephants bum. I think I would go for > a prop as large as possible and then if neccasery modify the skeg a > bit. I think I would have described the prop as an egg whisk! Brian, that skeg looks very substantial and best left untouched. Someone must have been badly advised when they lowered the stern tube!! If you are fitting a new (and bigger) engine I am sure it wouldn't cost too much to raise the height of the stern tube so you can get the benefit of swinging a much bigger prop - think of all the fuel you will save and the extra thrust!! Phil ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/canals-list/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/canals-list/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> 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/
