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Batavia

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Everything posted by Batavia

  1. If you are serious about obtaining an excellent seal, then use a cable transit system, such as this: https://www.powerandcables.com/product/product-category/roxtec-crl-cable-transit-frame/ Sit down before you start looking at prices! Edited to add: For single cables, just use plastic stuffing glands - cheap (in small sizes) and effective.
  2. Not so much guessing if you use a Fuller's calculator - the scale is 500 inches long!
  3. Selway Fisher have a design for a narrowboat (and a wide beam!)- and have produced other designs in the past. https://www.selway-fisher.com/Mcover30.htm#AVONCLIFF NARROW
  4. I normally use rigid uPVC conduit. For 12 volt circuits I have just drilled holes into the conduit, fitted them with grommets and brought the wires out directly to fittings that are close. For 230 volt circuits, I use normally use singles and proper conduit fittings throughout.
  5. 16mm LDPE pipe is widely used for irrigation systems and compression fittings (in addition to useless barbed ones) for it are readily available. No idea how its wall thickness compares with the boat piping.
  6. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  7. No, I am Chris! Frank has kept his various boats there for decades too.
  8. Correct! You get the paved area fronting the canal and a microscopic garden round the back. Your recollection is correct! We moored our boats (2 x Daedalus + Batavia) there, on and off, for 40 years.
  9. No, its the house which was built next door about 11 years ago, on the site of the old boat shed (which was partially burnt down by a local juvenile arsonist after the boat hire business closed).
  10. A little place for sale on the GU in Berkhamsted. https://www.rightmove.co.uk/properties/137692502#/?channel=RES_BUY
  11. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  12. We had one like this many years ago and the previous occupier had managed to break off the head of the bleed screw flush with the radiator, with the result that it was more or less invisible.
  13. Another vote for them being a crap design! Apart from the "staying open" problem, the screw which secures the bottom end of the stay only had about 1 1/2 turns of thread engaged in the tapped block on the frame. One of ours fell out with a stripped thread. After that I removed the stays and adopted the wooden block approach.
  14. Also there are times when you might want to throw the angle grinder into the water! I was using one with a flap wheel when a clump of flaps flew off and the wheel was then so out of balance that the angle grinder started vibrating so violently that I could barely hold onto it. As I tried to switch it off, the only other way of stopping it seemed to be to throw it into the water and hope that the RCD worked. A fraction of a second before I did this, I managed to switch it off. Two lessons: First, flapwheels aren't necessarily as safe as one might think and second, only use an angle grinder with a very easy-to-operate On/Off switch. I once owned a Hitachi angle grinder which required two hands to operate the miniscule switch. Never again.
  15. This is the inside of the box mounted on top of the alternator; all the exciter connections seem to come in here. It looks like part (or all) of a voltage regulation system, especially if the toroidal thing is a saturable reactor. At first glance, the finned item looks like a selenium rectifier, but it actually has stud diodes. I am away from the genset for a few days but will do some serious investigation at the weekend. thanks again for your help Chris
  16. Thank you for your very useful comments. It has P.O. Brush Code labels on the alternator and exciter, so I had assumed that it was probably from an exchange. If there is a mains immersion heater, it would explain the junction box labelled 240 Volts. The solenoid stop is seized solid but apart from that, things are in reasonable condition and the exciter commutator shows very little sign of wear. From the way it is plumbed in, I had guessed that the oil tank was part of a dry sump system but your suggestion of an automatic top-up arrangement makes more sense. Unfortunately someone has cut off and thrown away the electrical control panel! I will drag it out of the gloomy shed and start work on it. The owner wants to install it for occasional use at an isolated farm, on the basis that people will be less likely to steal it than a more modern (and much lighter) genset, especially if we fix it down with rag bolts! Chris
  17. Thank you! I also received the same answer from another person in Australia!
  18. Not in a boat but I was wondering if anyone here can identify this Diesel engine, which drives a 26 kVA genset. There don't seem to be any identifications on the castings but it has been suggested that it might be a Perkins. Many thanks Chris Edited to add - It has a dry sump - the box with the gauge being the oil tank.
  19. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  20. Two types of pipe were used - the flexible HAIS one and the steel HAMEL ones. The latter were 2" or 3" pipe.
  21. Since the Sunbury Lane terminal, further upstream closed over 20 years ago, these tanks have been fed by dedicated Jet A-1 lines from IoG and Aldermaston. Fuel is supplied to Heathrow and Gatwick from these tanks. I did many projects here over the years, including a solar-powered sheep shearing setup, for dealing with the sheep which at one time were kept to mow the mounds!
  22. On the Thames, the Walton Weir site is still very much in use, alongside the cut above Sunbury lock. https://www.google.com/maps/place/52°18'51.0"N+2°16'05.0"W/@51.4040141,-0.4090388,640m/data=!3m1!1e3!4m5!3m4!1s0x0:0x4462a67bb80bea7d!8m2!3d52.314162!4d-2.268065
  23. Strong emphasis on the word "careful" is required. When I was working on an airport tank farm in Asia, a 14 million litre tank of Jet A-1 was put off spec by some idiot cutting the interface badly on the incoming multiproduct pipeline!
  24. Tim Whittle's book "Fuelling the Wars - Pluto and the Secret Pipeline Network - 1936-2015" is an excellent book on the subject. Tim is an engineer who worked for many years on the GPSS and the book is a result of extensive research.
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