Optimus 550

Discussion in '550' started by Rangie, Oct 3, 2020.

  1. Rangie

    Rangie Subscriber

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    Hi Folks,

    An Optimus 550 - 500cp, I couldn't find anything to date it, I don't suppose they are marked on these lamps?
    It arrived rather dirty but was advertised as a runner so it was a good starting point.

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    It was stripped and thoroughly cleaned with hot soapy water.

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    Straightened the pricker rod and adjusted the length.

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    The pump leather came good after an overnight dunk in 3-in-1 oil but unfortunately it separated after a few pumps. New one fitted.

    The surface was speckled with verdigris and the bail was quite rusty.
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    Nothing to lose so I tried a polish to see if it would brighten up - very pleasantly surprised! the verdigris came off and the surface of the fount and the hood came up very well! The bail I got the worst of the corrosion off and gave it a wax to try and keep the rust at bay.

    oDSC_9818.jpg
    Mantle burning-in/shaping.

    oDSC_9823.jpg
    I used a Peerless 24A Mantle which seemed huge and baggy on fitting but it shrunk and shaped very well, with a stunning white light! :thumbup:

    oDSC_9825.jpg
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    Mantle has retained a nice shape and burned in perfectly.

    Very happy.
    Alec.
     
  2. Matti Kucer

    Matti Kucer Sweden Subscriber

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    Congrats!

    It cleaned up nicely and runs well!

    Regards from Sweden
     
  3. JEFF JOHNSON

    JEFF JOHNSON United Kingdom Subscriber

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    Those are well built lanterns and they are bright!:thumbup:
     
  4. ROBBO55

    ROBBO55 Subscriber

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    Congratulations @Rangie , it's cleaned up nicely. :thumbup:
     
  5. Nils Stephenson

    Nils Stephenson Founder Member

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    Unfortunately Optimus never dated their lamps. The only way of dating is by looking at the parts used and comparing with different advertising and catalogues. The start date is a bit hard to define but will be somewhere in the mid 1960s. The end date is a bit easier as the 550 model is in a 1974 catalogue but not in a 1975 catalogue. Presumably they stopped producing the model during 1974. This matches with other models they stopped making at that time.
     
  6. ColinG

    ColinG United Kingdom Subscriber

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    That's a fine lantern and it certainly cleaned up well!
     

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