Originally posted by Richard B
So come on down you 4-stroke boys, how does that compare?
Ok, my last trip to Ramsey, and back around the coast made me use 34 litres of petrol according to the petrol pump at Tesco - at least all this gives me clubcard points
That day, the GPS reckoned we had done 54.9 nm, which equates to 1.61 miles to the litre. Although we were trundling along doing 4 or 5 knots through the Bitches (while I had my lunch), a lot of that travelling was done in excess of 25 knots, sometimes cruising upto 35 knots to smoothen the ride out a bit.
This does not include 20mins of idle time whilst getting the boat ready in the marina, and cooling down after returning from higher rev use. I don't use oil, so can't show that I'm afraid
I think the worst I've had is around 1.2 miles to the litre when I had 8 people on board, towed another rib back to Dale, and then had 30 mins of pushing flat out all the way back up river after dropping the tow off..... it does seem to average better than 1.4 miles to the litre though depending on how much fun I have with the throttle.
Ideally, it'd be great to have one of those fuel flow meters - every time I fill the tank up is different - sometimes I can get it filled right to the top, other times, if the boat is leaning back a bit, I am unable to get the last litre or two into the tank.
During the summer, although I haven't done any really long trips like you have done Richard, I've found that anything over the 30knot mark seems to eat a lot more fuel - between 25 and 30 knots seems to be where the engine is most happy, and running at around 4500 revs.
I'd be interested to know what Martin Stacey gets on Bob now