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  2. Pin tumbler lock - Wikipedia

    en.wikipedia.org/wiki/Pin_tumbler_lock

    The first known example of a tumbler lock was found in the ruins of the Palace of Khorsabad built by king Sargon II (721–705 BC.) in Iraq. [1] Basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door and a horizontal bolt that slid into the post.

  3. Cox model engine - Wikipedia

    en.wikipedia.org/wiki/Cox_model_engine

    The most powerful cylinder piston combination without a doubt is the number 4 Tee Dee 049 cylinder. This cylinder has a tapered grind and tapered and lightened piston so the piston fit gets tighter as the piston reaches top dead center (TDC). The intake or bypass porting is 2 deep ports with 2 bypass booster ports on each bypass.

  4. Time-delay combination locks - Wikipedia

    en.wikipedia.org/wiki/Time-delay_combination_locks

    Modern time delay combination locks can have many functions such as multiple different codes, pre-set time lock settings (open and close times), pre-set vacation times (e.g. Christmas Day), dual code facility, and a full audit trail providing a detailed record of the lock history showing who opened the lock, when and how long it was open. [3] [4]

  5. List of Ford bellhousing patterns - Wikipedia

    en.wikipedia.org/wiki/List_of_Ford_bellhousing...

    Named for the 1962 Ford Taunus V4 engine and Ford Cologne V6 engine built in Cologne, Germany.. 1.2/1.3/1.5/1.7L were mostly in European Cars. 1.8, 2.0/2.3 had the same bellhousings bolt patterns with differences from year to year to be wary of.

  6. Velocity stack - Wikipedia

    en.wikipedia.org/wiki/Velocity_stack

    Short velocity stacks on a 302 cu.in. Ford FE engine in the tight confines of a Ford GT-40. A velocity stack, trumpet, or air horn [1] is a typically flared, parallel-sided tubular device fitted individually or in groupings to the entry of an engine's air intake system to smooth high speed airflow, and allow engine intake track tuning to incorporate pressure pulses created by its internal ...

  7. Lock bumping - Wikipedia

    en.wikipedia.org/wiki/Lock_bumping

    Security pins (e.g. spool or mushroom pins)—even when combined with a regular tumbler mechanism—generally make bumping somewhat more difficult but not impossible. Because a bump key must only have the same blank profile as the lock it is made to open, restricted or registered key profiles are not any safer from bumping.