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Join Date:

10-18-2016

Last Activity:

12-10-2016 4:24 AM

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LATEST ACTIVITY

  • Posted in thread: Ultra high powered slingshot crossbow on 12-10-2016 at 08:23 AM
    Hey do you you live in the UK?I do not. I currently reside in western NY.

  • Posted in thread: Trigger Mechanism Pool on 10-26-2016 at 04:39 PM
    Here is a bullpup trigger I designed this past week. The parts are made of 3/8" thick 6061
    aluminum, bronze sleeve bearings, stainless steel standoffs, and the side plates are 3/16"
    thick 6061 aluminu...

  • Posted in thread: Ultra high powered slingshot crossbow on 10-26-2016 at 04:35 PM
    Small update on version 2: I am just completing a personal design of a bullpup trigger
    mechanism. This allows 3 inches (76mm) more draw length in the same overall length! The trigger
    components are 3/...

  • Posted in thread: Ultra high powered slingshot crossbow on 10-20-2016 at 11:59 AM
    Well, you are already getting the momentum of a .45 ACP round, at 2,9 Ns. Energy isn't
    everything! Great work.The only problem with rubber based crossbows is the hysteresis effect...
    after four hours ...

  • Posted in thread: Ultra high powered slingshot crossbow on 10-19-2016 at 10:49 PM
    Hehe! That's interesting JonS! I am trying to get to 22lr energy (40gr @1200fps 127fpe). Only
    thing is with an arrow it's beyond enough to take even elephant with! Which brings a big
    advantage rubber ...

  • Posted in thread: Ultra high powered slingshot crossbow on 10-19-2016 at 05:21 PM
    Small update: I achieved 323.3 fps @463 grains for 107.49 ft-lbs or 145.7 joules of energy! I
    purchased lighter shackles, used a lighter string, and added two more theratube silver bands to
    the total....

  • Posted in thread: Ultra high powered slingshot crossbow on 10-19-2016 at 11:56 AM
    When I see this video an inner voice whispers into my brain "Of course we can always add more
    rubber...." :DGreat Work!Oh yeah I plan on increasing power as much as I can.:cool: I do want
    to sort out ...

  • Posted in thread: Ultra high powered slingshot crossbow on 10-19-2016 at 01:41 AM
    Just posted :)It's also not frictionless! THat would be impossible. Speed ratio simply
    represents what the mechanical advantage without friction would be.

  • Posted in thread: Ultra high powered slingshot crossbow on 10-19-2016 at 01:36 AM
    Hello everyone,I want to show you a rubber powered crossbow I am working on. I am developing it
    off of RalphG's demonstrator from a couple years back. It's a continuation of his concept.The
    basic layo...

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