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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VTXRTPSQXFBX4ZE6JM5F52DB33YEIYVN/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "VTXRTPSQXFBX4ZE6JM5F52DB33YEIYVN",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/I3SPJQZ2NAQC7QWDU7ECPFSYPEBSYIW5/",
    "sender": {
        "address": "ko6th_greg (a) hotmail.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Greg D.",
    "subject": "[amsat-bb] Re: G-5500 stuck problem",
    "date": "2009-01-02T03:04:12Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/WBQSODIL5NXMN23K57UGNRNHNERBY7RN/",
    "children": [
        "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/IA4YP4QT3M524Z37AYUVMC3KHZL2YLQ3/"
    ],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "\nHa, really...  Thanks, I was \"sure\" it was the other way around.\n\nSo, if the current drops a little on a jam, why would it burn up either the transformer or motor?\n\nGreg  KO6TH\n\n\n> From: [email protected]\n> To: [email protected]\n> Date: Thu, 1 Jan 2009 18:42:15 -0800\n> Subject: [amsat-bb] Re: G-5500 stuck problem\n> \n> Hi Greg,\n>    Actually you need to measure the current while it is moving,  then if it drops a little then its a jam, if it goes to zero then \n> its the limit switch.\n> \n> I know this goes against reasoning, you expect a locked motor to pull more current, but these are split winding AC motors with a \n> capacitor and they act differently.\n> \n> This is also why when you get a cable snag you burn up the motor or the transformer or both before you blow the fuse, that fuse I \n> think just saves you from a mis-wired or shorted cable.\n> \n> 73\n> Kevin WA6FWF\n> \n> \n> ----- Original Message ----- \n> From: \"Greg D.\" <[email protected]>\n> To: <[email protected]>; <[email protected]>\n> Sent: Thursday, January 01, 2009 5:58 PM\n> Subject: [amsat-bb] Re: G-5500 stuck problem\n> \n> \n> >\n> > To differentiate between a stuck gear or the limit switch (or similar), can you measure the drive current going to the rotor?  If \n> > it goes up at the 180 mark, it's a jam; if it goes to zero, it's the limit switch.\n> >\n> > Also, what does the controller's meter indicate?  Maybe it's shutting it down for some reason.\n> >\n> > Greg  KO6TH\n> >\n> \n> _______________________________________________\n> Sent via [email protected]. Opinions expressed are those of the author.\n> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n\n_________________________________________________________________\nIt’s the same Hotmail®. If by “same” you mean up to 70% faster.\nhttp://windowslive.com/online/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_broad1_122008",
    "attachments": []
}