Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Drop a Harley - one foot!

Discussion in 'Handguns: General Discussion' started by P95Carry, Oct 22, 2003.

Thread Status:
Not open for further replies.
  1. P95Carry

    P95Carry Moderator Emeritus

    Joined:
    Jan 3, 2003
    Messages:
    16,341
    Location:
    South PA, and a bit West of center!
    Today's useless piece of info .....

    Drop a Harley thru one foot ..... with an attached projection of say .357 dia .. and the impact from said projection closely approximates the impact from a ''slow'' .. (say 1250 fps) .357 mag 158 grainer.

    Beware falling Harleys!!:rolleyes: :p :D

    Sorry .... must be the phase of the moon!:uhoh:
     
  2. Mal H

    Mal H Administrator

    Joined:
    Dec 20, 2002
    Messages:
    17,432
    Location:
    Somewhere in the woods of Northern VA
    Huh?
     
  3. HogRider

    HogRider Member

    Joined:
    Sep 10, 2003
    Messages:
    458
    Location:
    Phoenix, AZ
    Aaah! Now I know. I always wondered about that one......


    :neener:
     
  4. P95Carry

    P95Carry Moderator Emeritus

    Joined:
    Jan 3, 2003
    Messages:
    16,341
    Location:
    South PA, and a bit West of center!
    Sorry Mal ..... flippancy got the better of me! I was just equating the muzzle energy of a modest load mag bullet ..... a 158 grainer .... to something else! This calculated to around 550 ft lbs .. much same as the Harley dropped by one foot.

    I'll be OK by tomorrow ... promise!! :p
     
  5. Mal H

    Mal H Administrator

    Joined:
    Dec 20, 2002
    Messages:
    17,432
    Location:
    Somewhere in the woods of Northern VA
    Would that be an FMJ Harley or HP? :)

    I kinda figured that's where you were going, but I thought you must have a stripped Harley since most are around 700 lb dry weight which is more than even a heavy .357 Mag. I think the Sportster is around 550, though.
     
  6. P95Carry

    P95Carry Moderator Emeritus

    Joined:
    Jan 3, 2003
    Messages:
    16,341
    Location:
    South PA, and a bit West of center!
    A heavy mag . ya know the ''real'' ones .. homeloads .... well if pushing 1500 then we have about 790 ft lbs .. so ... we're still in there!!

    Oh BTW .... a JHP Harley ... we want some expansion!!

    As I said ...... I'll be fine by tomorrow! :D
     
  7. larryw

    larryw Member

    Joined:
    Dec 22, 2002
    Messages:
    1,655
    Well, that settles it once and for all: next time a "Which one should I buy" poll or caliber war crosses the screen, the definitive answer is Harley. :D
     
  8. Standing Wolf

    Standing Wolf Member in memoriam

    Joined:
    Dec 24, 2002
    Messages:
    24,041
    Location:
    Idahohoho, the jolliest state
    Actually, that's a good way to explain muzzle energy.
     
  9. citizen

    citizen Member

    Joined:
    Dec 24, 2002
    Messages:
    429
    BT, DT :banghead: :banghead:
     
  10. techmike

    techmike Member

    Joined:
    Dec 24, 2002
    Messages:
    439
    Location:
    Kentucky
    Hmmmmm

    Are we droping a Fat Boy or a Sporty or an Ultra or what? On top of that what kind of biker admits to dropping his Bike?:evil:

    What if we Drop a Yamaha or a Honda??

    Which is better for stopping a Zombie/Attacking Bear or even a Zombie Bear??

    We need details!!
    :neener:
     
  11. P95Carry

    P95Carry Moderator Emeritus

    Joined:
    Jan 3, 2003
    Messages:
    16,341
    Location:
    South PA, and a bit West of center!
    Techmike ..... I guess my Honda VTX would do too ... :p The ''drop'' of course is an ideal vertical drop ........ not a ''side-scraper'' so .. no harm to bike ... just to the ''target''!!:evil: :D
     
  12. 10-Ring

    10-Ring Member

    Joined:
    Dec 24, 2002
    Messages:
    12,037
    Location:
    California
    Dude, reconsider wearing that helmet! :scrutiny:
     
  13. coylh

    coylh Member

    Joined:
    Sep 16, 2003
    Messages:
    592
    Location:
    Bothell, WA
    How many inches of gelatin does a Harley penetrate? ;-)
     
  14. bountyhunter

    bountyhunter member

    Joined:
    Jan 8, 2003
    Messages:
    3,421
    Location:
    Fascist-Fornia
    Actually, I am not sure the English unit of foot pounds actually means a pound weight dropped one foot. Energy is actually equal to:

    e = 1/2 Mass X velocity (sq)

    In English units, mass is given in something called slugs (not pounds) and I don't remember the definition of a slug... other than my wife's saturn.


    Complicating it further, in the English system foot-pounds is also the measurement of torque which is totally different from energy.

    Either way, the thing to remember is that when riding a Harley, always lean INTO the hill at a stop sign or you will have the total mass of the bike on your leg in about a half second.
     
  15. fourdeuce82d

    fourdeuce82d Member

    Joined:
    Jul 17, 2003
    Messages:
    92
    Location:
    Houston
    Might be equal in terms of energy, but certainly not momentum...
     
  16. P95Carry

    P95Carry Moderator Emeritus

    Joined:
    Jan 3, 2003
    Messages:
    16,341
    Location:
    South PA, and a bit West of center!
    Bounty Hunter ........

    The torque ft-lbs is in a way the reverse of our energy unit for projectiles ... one foot pound is the energy required to raise one pound weight thru one vertical foot ....... or of moving an object one foot against a resistance of one pound.

    The slug is a mass unit ...... tho I forget its definition right now .... and the pound is itself a unit of force ... derived from slugs and feet/sec^2 ... the acceleration due to gravity.

    Looked a bit further and best I could find for 'slug' was ..... ''unit of gravitational mass of approximately 32.174 pounds '' ... this seems to relate again to pound force and acceleration due to gravity (32 ft/sec/sec.... 9.81m/sec/sec)
     
  17. Lord Grey Boots

    Lord Grey Boots Member

    Joined:
    Dec 26, 2002
    Messages:
    266
    Location:
    Snohomish, WA
    I was going to ask if dropping a harley on someone would "Stop them".

    thinking a bit.. I am not going to be able to left a 750 lb bike off of me, therefore won't be going anywhere, so I think I would be sufficiently "instantly one shot stopped"....
     
  18. HogRider

    HogRider Member

    Joined:
    Sep 10, 2003
    Messages:
    458
    Location:
    Phoenix, AZ
    After careful consideration I decided I do not want to test it and "drop" my Harley (Fatboy).

    :p
     
  19. citizen

    citizen Member

    Joined:
    Dec 24, 2002
    Messages:
    429
    No "need" to test it; results are entirely predictable....:what:
     
  20. Alerion

    Alerion Member

    Joined:
    Dec 31, 2002
    Messages:
    101
    Location:
    Bloomington, IN
    Works for me! :D
     

    Attached Files:

  21. Jesse H

    Jesse H Member

    Joined:
    Dec 26, 2002
    Messages:
    633
    Location:
    The Great State of Texas

    MMMMM

    1300 or 1800? *drool*
     
  22. P95Carry

    P95Carry Moderator Emeritus

    Joined:
    Jan 3, 2003
    Messages:
    16,341
    Location:
    South PA, and a bit West of center!
    Just the 1300 .... it's the C4 custom ... very new. Put only about 3k on it so far .. now have to keep the baby warm for winter. Had considered the 1800 but ... like the mpg's on 1300 ... 45 normal, near 50 real smooth cruising.

    This pic was August when daughter and her old man were staying ..... she's as good a pillion rider as she is a casual shooter!!

    [​IMG]
     

    Attached Files:

  23. Kevinch

    Kevinch Member

    Joined:
    Dec 26, 2002
    Messages:
    446
    Location:
    NE OH
    I have one of these:

    [​IMG]

    Don't know which Harley was used for the comparison, but this bike is much more heavy than an Ultra Classic so it must be at least a .41 mag!!
     
  24. benEzra

    benEzra Moderator Emeritus

    Joined:
    Dec 25, 2002
    Messages:
    8,579
    Location:
    Down East in NC
    P95Carry,

    Actually, the pound-force/slug-mass system is only one formulation of the traditional British-style system, and although widely used in pre-metric engineering circles in the U.S., it has never been the official standard here. In the U.S., the legal pound avoirdupois is a unit of mass defined as EXACTLY 0.45359237 kilogram per the U.S. National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards. The official U.S. pound has been defined in terms of the kilogram since 1893; before that, it was defined as the mass of a brass artifact kept in Washington.

    The reason engineers liked to use slugs is that if you measure mass in pounds mass and force in pounds force ( = the force of 1 standard gravity on a mass of 1 U.S. pound), then Newton's law F=ma doesn't work out; you have to make it F=kma where k is a correction constant. (If you think that's weird, NASA used an even weirder set of units in the 1960s--the pound-force as the force measure, the inch as the length measure, and the "slinch" (slug-inch) as the mass measure, 1 slinch being equal to the mass that 1 pound force would accelerate at 1 inch per second (IIRC).
     
    Last edited: Oct 30, 2003
  25. P95Carry

    P95Carry Moderator Emeritus

    Joined:
    Jan 3, 2003
    Messages:
    16,341
    Location:
    South PA, and a bit West of center!
    benEzra

    Thx for the clarification. My engineering training was all geared around metric ... so for me it was all kg, Newtons etc ... some logic to that re base 10 but I still hanker after the ''old way''!!

    Having said that ... age and a degree of ''brain corrosion'' seem to make me way less fluent than I used to be - or should be! Don't use all this stuff much these days.
     
Thread Status:
Not open for further replies.

Share This Page