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David Mack

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Everything posted by David Mack

  1. Perhaps more likely that the engine was mounted in line with one of the props, using the standard kelvin gearbox, with a chain drive across the two propshafts.
  2. We are told OP's partner is a joiner and neither of them knows much about engines. We don't know how much either of them knows about 12V electrics (which are different from house wiring), plumbing, heating systems, LPG gas systems, BSS requirements, welding, painting, etc. etc. So at the moment a bit of an open question as to the overall level of their practical abilities.
  3. This boat? https://www.ebay.co.uk/itm/315200806314 Ad suggests hull is OK (but then it would, wouldn't it). Could be OK but a lot of work. Not just joinery and an engine refit either - there's plumbing, electrics, heating, gas etc. to do as well. If you've never been on a narrow boat do you really want to take all this on? And the previous engine was probably a Sabb (not a Saab) and to my mind a nicer engine, but presumably now history.
  4. A bit more than that - it's a standard technique for relining and reinforcing sewer pipes. The fibreglass liner is inserted into the pipe with a plastic tube inside it. The tube is first filled with water under pressure to force the liner against the existing pipe structure and then hot water is circulated through it which triggers the temperature-sensitive setting reaction of the fibreglass resin. Then the plastic bag is removed and the fibreglass ends trimmed.
  5. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  6. I have often read about the need to remove mill scale before blacking, either by angle grinding, grit blasting or leaving it to rust for a few months. But outside narrow boat building, what does the steel fabrication industry do? Angle grinding and leaving it to rust don't look to be credible solutions, and I can't believe that fabricators pay the extra cost of blasting in most cases. Which suggests they largely get away with just a degrease, primer and paint. I have been told that the top notch boatbuilders used pre-blasted and primed plate for hulls, but prefer plain steel, primed after fabrication, for cabin structures as it is easier to get a good line and finish that way.
  7. Is it just me, or are VNC and Search giving an error message for everybody?
  8. This post cannot be displayed because it is in a forum which requires at least 10 posts to view.
  9. The caption on the last picture states it is all steel!
  10. That looks very much like a bespoke adaptor fabricated for the purpose rather than an off the shelf part. Can you not adapt it to suit your purpose?
  11. I know it says that. And I don't doubt that this is an older building much extended. But it just isn't in the right location to have been a lock cottage. Hence my question whether it actually was one.
  12. If the engine is designed with a standard SAE gearbox mounting, you could probably find a bellhousing intended for another engine with the same SAE mounting. Try other engine marinisers.
  13. I seem to think that at least one of the original Lichfield locks was blown up by the army for demolition practice. A bit unfair to blame the original builders, or those responsible for its maintenance while in use, for the lock failing in those circumstances!
  14. The canalside property in that area which I once aspired to own collapsed over 30 years ago.
  15. Claims to be a former lock cottage, but it isn't actually alongside the lock. So was it a lock cottage?
  16. We found the remains of timber framing and anchor timbers running back from the lock wall when rebuilding chambers on the Droitwich Barge Canal.
  17. 6) Adds post to dormant thread.
  18. What is the origin of the engine? Marine versions usually had an open flywheel on the front. If it's a converted industrial, then the gearbox isn't the PRM one would normally find. I think your best solution is going to be to fit a secondary shaft at the front end, probably mounted direct to the engine beds (or a suitable bracket attached thereto). The existing 10" pulley would drive a small pulley on the secondary shaft, with a large pulley to then drive the alternator, also fixed directly to the engine beds/hull. As suggested above, it may fit in better with the alternator mounted the other way round.
  19. I have seen a stove like that before, although I can't recall whether in the flesh or a photograph. It may have been in one of the museum boats. It was in poor condition with some missing parts, but the same distinctive shape. Of course I may have seen the same single example as the artist of that book! I have also read somewhere that new motor boats were supplied with something similar, and it was the individual boatmen who replaced them with ranges more suited to cooking.
  20. If that happens, then it won't be the least-used sections which close, it will be those with significant failures, wherever they are. Boaters with longer memories will remember the early 80s when a number of tunnels were closed UFN (until further notice) cutting through routes on popular waterways. IIRC the list included Blisworth, Netherton, Saddington and Preston Brook. Eventually government was persuaded to provide some additional funding to sort the problems out, but that looks much less likely were the same situation to happen now.
  21. I can think of a few sections of canal which have little through traffic (especially if you exclude those CCers moving only as little as they have to), but which have significant numbers of moored boats.
  22. Indeed. Wikipedia says: "British Association screw threads, or BA screw threads, are a set of small screw threads, the largest being 0BA at 6 mm diameter. They were, and to some extent still are, used for miniature instruments and modelling. They are unusual in that they were probably the most "scientific" design of screw, starting with 0BA at 6.0 mm diameter and 1.0 mm pitch and progressing in a geometric sequence where each larger number was 0.9 times the pitch of the last size. They then rounded to 2 significant figures in metric and then converting to inches and rounding to the thousandth of an inch. This anticipated worldwide metrication by about a century. The design was first proposed by the British Association in 1884[1][2] with a thread angle and depth based on the Swiss Thury thread,[3] it was adopted by the Association in 1903."
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