Jump to content

Jerrykins

Members
  • Posts

    158
  • Joined

  • Last visited

Posts posted by Jerrykins

  1. 3 hours ago, Richard Farrant said:

    Looks like a late one as it has sling plates on the hubs.

    Back in late Seventies a friend rescued a C4 from a dealers yard near Sissinghurst in Kent. I did a lot of work on the engine and gearbox.

    And it's still going strong..... Thanks Richard.

  2. 7 hours ago, radiomike7 said:

    Foden FD12 on You Tube, were they two 6 cylinder engines geared together similar to the Sherman twin Detroits?

     

    I recall the FD12 was selected for the Hunt class because it's characteristics of low vibration & low magnetic signature were necessary when sweeping above active mines.  The FD12 generated electrical power at 1800 r/min, which equates to 360 firing cycles per second, vibration was further minimised by mounting the gen set on a raft with two sets of mounts transmitting little vibration to the hull/sea. Three gen sets were mounted in the hull above sea level further reducing noise transmitted into the water. The crankcase was cast in non-magnetic aluminium, as were many of the auxiliary casings, stainless steel conn rods & c/shafts etc all adding to low magnetic signature. Part way through development Foden decided the work was not for them & the MoD transferred the work to R-R Crewe, presumably because R-R had considerable experience of 2 strokes with the K60, which had proven to be the best 2 stroke in UK military service. When sweeping the ship employed electric only propulsion making the ship was pretty stealthy, noise-wise. It was during the Iraq / Iran war that the Hunt class cleared the passage of mines into Kuwaiti waters for the allies, they did the job well without loss, they were the best ship available to do the job.

    • Like 1
  3. 3 hours ago, andym said:

    For info, the Deltics in the Hunt Class Minehunters have now all been replaced by conventional Caterpillar diesels.

    Andy

    For info, the Hunt class were built as MCMV (mine counter measures vessels), the propulsion engines - Deltics & the gen sets - Foden FD12 2-strokes were built to challenging low magnetic specs utilising stainless steel conrods, crankshafts & other components. In service they proved to be very expensive to maintain as a result of the exotic materials employed. The Hunt class strategic requirement is now a Mine hunter &/or Fishery protection vessels, which  no longer require a very low magnetic build. In addition degauzing methods have improved, so all the original engines were replaced with conventional designs, which are cheaper to purchase, less costly to maintain & much longer lived. They might have retained the Deltic pulse generators, I'm a bit out of touch now.

  4. 9 hours ago, Mk3iain said:

    Just out of interest, were the L60/K60 not derived from the Junkers Jumo aircraft engines. I saw a picture of a Junkers engine once that looked strikingly similar to an L60.

    Love the Napier engines, is there a book about Napier around?

    Iain

    Back in the '60's there was a Junkers wartime opposed piston aero engine in the K1 area of the R-R factory at Crewe, where the K60 was manufactured.

  5. Splendid vehicle Kevin we'll miss Queenie, I'm sure she'll sell in a trice.

     

    Best

     

    Jerry

     

    Bedford QL, the interior has been converted to living accommodation, hot/cold water, toilet/shower, approx 90ltr water tank, gas hob/oven, wardrobe/storage.

    This vehicle has been converted to diesel using a cummins 6BT naturally aspirated.

    The vehicle was totally stripped/sand blasted and painted about 6yrs ago together with all new canvas canopy and other items, it has had a new radiator and starter motor this year. She is a reliable old girl with regular trips to W&P/Normandy Asking £14000 ono Contact Kevin on 07947411227 or 01394448806attachment.php?attachmentid=127823&stc=1attachment.php?attachmentid=127826&stc=1attachment.php?attachmentid=127825&stc=1attachment.php?attachmentid=127827&stc=1attachment.php?attachmentid=127828&stc=1attachment.php?attachmentid=127829&stc=1attachment.php?attachmentid=127830&stc=1

  6. Can some kind person tell me how the 'Lite' clutch is adjusted? It appears to have a bl..dy great central coned coil spring providing the engagement and a sort of lever plate within to disengage the friction plate. There are adjustment shims to increase the spring tension and the clutch pedal linkage needs careful adjustment. Any advise in getting the best from this set up will be gratefully appreciated as the clutch is starting to slip. Thanks Jerry

  7. The speedo cable has just failed on my C4, the inner cable failed at the speedo head as the chronometric speedo failed on the way home from an event on Thursday. Thankfully the inner cable can be removed easily. Does anyone have a spare cable or any advise on a source for a replacement. Jerry

  8. I have a similar engine in a frame dry stored in the barn. I also have a crate full of Enfield spares. I bought them ages ago for rather too much. I never started the restoration. If of interest I have a very rare Scott 2 stoke military engine, which powered an Ericcson predictor. If your interested in acquiring either send me a pm. Jerry

×
×
  • Create New...