Hi Dr Dom, a couple of points. the dark grey clamp ring is used for all VP saildrive seals. It is also not the original from your boat, which would be a different colour, same colour as the gearbox at the top of your saildrive. The original GRP bed for earlier models did not have the same...
Type 42 Class Destroyers able to "crash stop" from 30Kt to standstill in 1.5 x ships length, approx 700 feet! 2 off 56.000 Hp Olympus gas turbines wound down from full chat, 2 of 5 blade CP prop from full ahead to full astern then pour in the fuel and keep clear of the wake trying to drown...
Joined Adventure in Gosport late 70's, Skipper and watch leader full time crew, remaining 8, 4 male 4 female. Sailed to Poole and a merry night on the quay. Departed to Brest following day, fab sail in ideal conditions. 2 days in Brest and beat back to St Peter Port. Unfortunately5 miles out...
Looking like a "top job" very well done! A couple of thoughts if I may make so bold. Do the Cummins engine have any form of piston cooling? Siezure above piston pin in a VP would instantly lead to thoughts of piston cooling failure, i.e. oil system problem, may not be relevant to Cummins...
Hi Rotrax, Please do not stop the engine by starving it of diesel. The injection pump uses diesel for both cooling and lubrication, every time you allow it to run dry there is a chance of internal damage. Engine stop is achieved in these pumps by output being recirculated away from...
Hi Rotrax, Yanmar 4JH4-HTE is a completely mechanical engine as far as the running is concerned. There is no form of engine control unit, therefore no way of high temp, low oil pressure or low voltage interfering with the running of the engine. As with all diesels the key is 3 basic...
Looking at your last picture, where the taper meets the full diameter of the shaft, is that a line of dirt around the circumference, or is it corrosion? This could be a weakened area of your shaft. Suggest sterngear maker or specialist machinist has a look. Don't want to do all this work...