grendel

generally it will never arrive having been replaced with a replacement bus service.

Robin, i dont know if you noticed, but I plotted a possible route to Ramsgate from Brighton using the navionics link you gave earlier, and it shows a warning with just 2m depth at the harbour entrance to Ramsgate, Just a heads up for you - I know you measured Independences draught at 5 foot something, but I wasnt sure if the charts showed the mean low water level or something else.

ooh I can see timbo wont be happy with and this just highlights what we have been saying before re the Sandford principle. Its all in there in Black and White. (well at least thats what the RSPB want)

it does depend whether the duck gets stuck in the plughole or not, but the instruction says to ignore that.

about 10 minutes give or take.

I think that with the calculations shown above we have proven that there aint nowt wrong with the system as Griff would say a full tank would take 35 minutes to empty through the 1 1/2" pipe under atmospheric pressure, 15 minutes longer than it would take to fill using a fast standard pump or 23 minutes longer than a fill on high pressure lorry pump. the flow rate from a full tank to an empty one is about 40 litres per minute maximum

well by using an online flow rate calculator, and assuming 1m cube tanks connected by a 1 1/2" pipe with 4 elbows and 4 valves, the head between the tanks is about 70mm. assuming the start condition of one tank requiring 220 litres, and the other 150 litres flow time to lower one tank by 70mm (with total loss of fluid) is approx 5 minutes at 2 gallons a minute (9 litres a minute), so that is the minimum equalization time, this rate will slow as the second tank fills up. the flow time at 30mm head is nearer 7.5 minutes at just over a gallon a minute (4.5 litres a minute) - consider this, there is less than half the fuel to move at this point, and to move this half takes longer, so as the difference between tanks diminishes the flow rate diminishes more in proportion. then add the fact that the person filling up is standing on the full tank side, listing the boat by ? (how much), and you have an explanation why the fuel transfer between tanks while filling up can be so slow. Your average fuel dispenser pump can achieve about 50 litres per minute (lorry pumps can get to 130 litres per minute), thus we can see that while we can fill the port tank quite quickly, at best the flow between the tanks can only happen over a longer span of time.

possibly slowed even more as the vessel heels over due to the imbalance between the weights in the tanks.

It seems to me the slow flow rate may just be down to the minimal difference in levels between the two tanks, if the starboard tank were empty, then fuel would flow at the maximum velocity a 1 1/2" pipe will allow, but once the two levels approach the same level the rate of transfer will be less as the difference in atmospheric pressure between the two will be minimal, the closer the levels get to matching the slower the transfer.

Well the Kent shore chase team have a very loose itinerary planned for Sunday- starting at dungeness, timings yet to be worked out, its all down to when Indy and the crew leave brighton and average speeds etc. Various vantage points with cafe's have been strategically planned out, and camera gear and spotting aids prepared for the photography. I have a range of big lenses that will get me closer for some decent photos, including an adaptor that will allow me to use one of my telescopes as a lens (equivalent to over 1000mm f/l)

I used 20 minutes as an example - in truth dependent upon the position of mars at the time it can vary between about 4 minutes and 24 minutes. depending whether mars is aphelion or perihelion, and whether the Earth is too. of course the truth is even more complexwith a variety of states dependent upon the position of each planet in its orbit.

As the latency period is over twenty minutes, every move is carefully worked out and pre-programmed for the rovers, maybe for several hours ahead. - even worse for probes further out with a latency measured in hours.

Ricardo, if the worse happens Robin can feed from the centre tank to either engine, so can keep the fuel balanced, one way or another. I think it may be deliberate as Griff says, to stop the fuel shifting to one side in heavy seas.

a top coat of epoxy has been applied to seal all the edges of the fibreglass, the running gear replaced, this means that we should now have a watertight hull.

how big is the vent pipe on the tank, maybe you would need to crack the filler to get faster flow, and it also depends on the delivery rate.

is it wrong that I keep checking back for updates as I get the camera gear ready for next Sunday when they are due to come past kent.

and vice versa, how much of the tolls half is being spent on the NP oriented issues?

Why bother, just bring the young lady along to moor up for you.

its been a common practice in models for a long time, starting with silk over balsa.

And the second side receives its skin.

Well I went with the 25g in the end, one side is done, its horrible stuff to cut, very sharp scissors are best.

one weighs twice as much, so one will add about 25g to the model, and the other about 50g, but both will massively increase the strength.

after complaints that my work bench was a bit cluttered (well it was) when I saw a set of drawers in liddles for cheap money, I got a set and set about tidying, once I had tidied I sanded down the fibreglass sample from this morning, then gave it another thin layer of the epoxy. to be honest I think either one will do the job, but I too am leaning towards the 25g.

so basically you will all need to buy new seals and rubber bits that are safe with the new style fuel, and it will be more prone to diesel bug

next door to dingly dell