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04-22-2013, 06:05 PM | #1 |
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Join Date: Jan 2011
Location: Colorado Springs
Posts: 868
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Horn Armature Schematic
Does anyone have a horn armature schematic or wiring diagram? I know I can reverse-engineer this myself, but was hoping to compare my unwinding results with another known example.
Also, what gauge magnet wire works best? Thanks!
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Ray White |
04-22-2013, 07:23 PM | #2 |
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Join Date: May 2010
Location: Mpls, MN
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Re: Horn Armature Schematic
Your armature looks fine from the pictures. Did it flunk the growler test?
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04-22-2013, 07:33 PM | #3 |
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Location: Colorado Springs
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Re: Horn Armature Schematic
I just wanted to rewire it so it will last another 80 years.
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Ray White |
04-22-2013, 07:40 PM | #4 |
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Re: Horn Armature Schematic
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04-22-2013, 07:41 PM | #5 |
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Location: Englewood, Colorado
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Re: Horn Armature Schematic
99% of the time they do not need to be rewired.
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04-22-2013, 07:56 PM | #6 |
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Re: Horn Armature Schematic
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If you use a different gauge, look up it's resistance per foot (or meter) and calculate how many turns will give the equivalent ampere-turns. If it is a series wound motor, for a different gauge you MUST involve the field resistance in the calculations as a series resistance when figuring amperes through the armature to match ampere-turns. Motor acceleration from stop to running speed is a very complicated integration of several non-linear functions, so I'm not going to spill the math here. Simply put, if you want the same start/run characteristics try to stay near the original gauge and number of turns. That armature appears to be in excellent shape. If it has a fault it is likely easily found and repaired without a complete rewind. Have fun. *** Here's two 'cheat' methods to get new, thinner insulated wire to end up wound tight with the same number of turns: 1) build up the core slots with fiberglass tape to increase the spool diameter. 2) wind dental floss with several of the turns to take up space. Once you find what works on the first run (a few tries) the rest will be easy. |
08-21-2013, 11:46 AM | #7 |
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Re: Horn Armature Schematic
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