Mike Stevens wrote: > [EMAIL PROTECTED] wrote: >> [EMAIL PROTECTED] wrote: >>> ----- Original Message ----- >>> From: "Mike Stevens" >>> <[EMAIL PROTECTED]> >>>> The only time I've ever seen any sign of my engine getting too warm >>>> while of the tideway was when I >>>> was trying to keep up with President and Kildare (and they were >>>> running b reasted - which shows just how powerful that steam >>>> engine is). > >>> I was on the same cruise, and I also had to push my engine to keep >>> up, but I wasn't running completely flat out (just very close). I >>> thought it was just me, and my knackered (at the time) Lister (top >>> speed at the time 4.7mph!). From your comprehensive and brilliant >>> website I noticed you had a British Leyland 1.8 in Felis Catus II, >>> so you should have had no problems keeping up! > > We weren'tflat-out either, but running faster tha normal canal revs. > I > think our 1.8 was a bit under-cooled at that stage of its history. >> >> I was on the same trip too (assuming we're talking about the May 2004 >> St Pancras Cruising Club trip > > South London IWA trip actually. > >> - and I don't recall us having much >> trouble staying ahead of P&K (I was photographing them for a magazine >> article) so we were trying to keep just ahead of them. > > The rest of us noticed! > >> Our National >> DM2 is usually quoted as 18hp, compared to the 19.5 of our previous >> Lister SR3, although I can't say I've noticed a great deal of >> difference on the occasions when we're in deep enough water to run >> the engine close to maximum speed. Maybe it's just that Fulbourne >> (being an ex-working boat) is built with a fairly long swim at front >> and back and therefore goes through the water (and feeds water to the >> prop) more efficiently > > I think the long swim probably has quite a bit to do with it. And of > course hydrodynamic theory (of which I am almost toally ignorant) > says that a > longer boat has a higher maximum hull spped than a shorter one. > >> The National engine actually seems to prefer being worked fairly hard >> - I'm not sure the same could be said of the SR3, although once we'd >> got a decent cooling air duct installed it didn't seem to mind. > > Slow revving vintage engines with big props seem to be much more > efficient > at turning engine power into propellor-power than do more modern > stuff.
Have you opened up FC3 on the tideway yet Mike? It might have been more efficient, but Fulbourne had trouble keeping up with us at 2000rpm :-) -- Neil Arlidge - NB Earnest / Barge Maurice A (on the drawing board) Follow the traveled TNC at : http://www.tuesdaynightclub.co.uk ------------------------ Yahoo! Groups Sponsor --------------------~--> See what's inside the new Yahoo! Groups email. http://us.click.yahoo.com/2pRQfA/bOaOAA/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/
