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08-22-2017 9:37 PM

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  • Hertfordshire - UK


  • Posted in thread: CAMBIELA engine on 09-24-2016 at 08:56 AM
    Quote - "This way, in half of the cycle each gear hasto have a free wheel situation; that is
    achieved with a setof teeth that lock each gear only in one direction"Use a spragg/one way
    bearing. The rat...

  • Posted in thread: Small Linear Actuator on 02-03-2016 at 05:37 PM
    An old motorised Satellite dish would be a good source for a DC linear actuator. It must be an
    old one though, as modern set-ups use a Horizontal polar mount with a DiSeq controlled rotary

  • Posted in thread: creating v-belt sheave angles using Onshape on 12-17-2015 at 05:25 PM
    It might only be giving radii dimensions as your drawing has a cut out/section view so there
    are no full circles from which the software can derive a diameter. Solidworks is the same. It
    needs a full ...

  • Posted in thread: Galling on a steam engine on 02-27-2015 at 08:56 PM
    Could be bent crankpin, poor alignment or possibly hydraulic lock if the piston is covering the
    exhaust port at TDC. But i think the bent crankpin is most likley from what you describe.

  • Posted in thread: Plastic for Threading. on 01-15-2015 at 09:11 PM
    Depends on the application, but Delrin (Polyacetal) is a pretty safe choice. It machines well,
    with very little tearing/hairs, and is pretty hard as plastics go. If you need a tight thread
    with low fr...

  • Posted in thread: Need to drill a long hole.. on 12-18-2014 at 06:30 PM
    And gun caliber is much bigger that 1/8".Did everyone miss the 1/8" size? 12" x 1/8" diameter
    is just a a bit larger than spaghetti, I do not know about industrial settings, but on a HSM is

  • Posted in thread: Need to drill a long hole.. on 12-17-2014 at 06:00 PM
    Even with all of these features it is very hard to get a absolutely straight hole. Actual gun
    barrels are often straightened after drilling operations.I work for a gun drilling company and
    although p...

  • Posted in thread: Duke engines on 12-12-2014 at 08:17 PM
    I think the bearings mentioned at the 3:07 mark are on a bench stand and not a part of the
    engine. A stand like that would allow easy rotation of the cylindrical engine so as to be able
    to work on all...

  • Posted in thread: Want to make a tapered reamer on 12-08-2014 at 07:57 PM
    1st thing is you've drawn a left hand cutter, maybe on purpose, maybe not. To cut clearance,
    simply over rotate the part 10 degrees or so from when you've cut the flute, lower the quill or
    raise the k...

  • Posted in thread: mill lathe and shed (in progress) on 10-05-2014 at 09:07 AM
    Great shop. I've seen factories smaller than this :hDe:And i've worked in a few!


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