If yous are able to solder as shown inward Part 3, congratulations! That’s the most hard role to learn. These adjacent few things are much simpler inward comparison.
Once nosotros finally supercede our onetime motor leads amongst novel wiring, we’ll demand to connect the ends of that novel wiring to the “3-Pin Terminal Body,” which is this thing:
When nosotros detach it later, you’ll run into that within are iii threaded brass studs:
The wires demand to connect to these studs. We’ll eventually connect them yesteryear either a) crimping pre-bought band terminals onto them, or b) creating band connections on the ends of the wires ourselves. I’m going to present yous both methods thence yous tin move create upward one's hear which yous prefer.
Ring Terminal Method #1: Crimping
What you’ll need:
For crimping, you’ll demand a wire crimping tool or 1 of the starting fourth dimension 2 wire strippers nosotros looked at inward Part 1. While I referred to the Gardner-Bender tool equally a slice of crap, it does cause got a useful crimping department on it. You’ll also demand to purchase some band terminals, also called band connectors. They come upward inward 2 varieties, “insulated” together with “non-insulated”:
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| Left: Insulated. Right: Non-insulated. |
Ring terminals also come upward inward unlike sizes depending on the wire gauge. Since we’re using 18-gauge wiring, expect for the ones that cause got “18” listed inward their size. They may hold out labeled “22-18” which exactly agency they’ll check wire gauges 22 to 18.
Lastly, band terminals are sold amongst holes made for unlike stud sizes. The stud is the piffling brass screw that they’ll claw onto within the terminal body. We desire stud size #8.
So what yous demand are “18-gauge non-insulated #8 band terminals.”
They terms pennies each together with your local hardware store, electrical furnish shop or automotive parts shop should cause got them. Buy at to the lowest degree a dozen to exercise on; in 1 lawsuit crimped, they are non reusable. Here’s a link for a 20-pack on Amazon inward instance yous can’t discovery any.
How to crimp a connector onto a wire:
To crimp a band connector on requires some forcefulness together with a adept grip. Even if your travelling pocket is non good, yous may all the same hold out able to produce it; the flim-flam is to utilization a tool that provides adept leverage, equally seen a piffling farther downward inward the "No/Yes" photos. The solely way to say is to try.
On a wire scrap, strip off close 1/4" of insulation. There’s no demand to braid it.
Gently house the band connector into your wire crimper equally shown below. Be careful non to squeeze it yet, exactly house it inward in that location firmly plenty to concord inward place. Note that I’ve placed it inward the department clearly labeled “22-18,” which is appropriate for crimping onto the 18-gauge wiring that we’re using.
Also regime notation that I’ve placed the band terminal into the crimpers towards the transcend of the tubular part, non the bottom, thence there’s a piffling of the underground sticking out beneath the crimpers.
Now slide the exposed wiring through the underground inward the band connector, equally seen inward the photo, until the halt of the wiring exactly peeks out:
Hold the wire crimpers equally far downward on the handgrip equally yous tin move go, for increased leverage.
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| No! |
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| Yes! |
Now, squeeze the bejeezus out of the handles, together with this should happen:
After you’ve firmly squeezed equally hard equally yous can, the tubular role of the band terminal should immediately hold out squashed-looking together with biting into the copper wiring strands. The results should expect similar this:
Does it? Good. But we’re non done crimping yet, we’ve solely done the transcend part. Now slide the crimpers downward a piffling fighting on the tube, to crimp the bottom part.
Squeeze again, together with you’ll acquire this:
Here’s a before-and-after, thence yous tin move run into how much nosotros cause got crushed that tube. It’s of import to acquire it pretty flat, non solely to brand a adept connectedness amongst the stranded wires, but to foreclose “overcrowding” in 1 lawsuit nosotros eventually connect it to the 3-pin terminal body.
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| Left: Pre-crushed. Right: Crushed. |
If it doesn’t answer to your tugging, good done.
If it does come upward out, yous demand to squeeze harder adjacent time; together with if you’re non able to acquire it whatsoever tighter, this method volition non function for you. Fortunately, there’s a instant way to brand a band at the halt of a wire.
Method #2: Self-Made, Soldered Rings
I learned how to produce this yesteryear reading Elizabeth’s blog, together with she inward plough figured this out yesteryear reading Elle Dubya’s blog.
Start off yesteryear stripping close 1.5 inches of insulation off the halt of a wire. (If you’re using the Katapult tool, yous may demand to strip off 3/4-inch first, thence slide the tool downward together with strip off some other 3/4-inch.) Braid the strands up.
Elizabeth together with Elle used pencil tips to air current the wiring around, but believe it or non I don’t ain whatsoever conventional pencils (sign of the times.) But luckily I discovered a criterion spool pivot is close the same size equally the brass stud the band volition demand to check onto.
So, cause got a criterion spool pin. (For practice’s sake yous tin move fifty-fifty utilization the 1 sticking out of the transcend of your sewing machine, though that volition non function in 1 lawsuit nosotros acquire the motor inward place.)
Wrap the wiring exactly about it, keeping it fairly tight, to brand a ring. Be certain to go out room on the “tail” to roll that exactly about the wiring inward a curt braid, closing the loop together with adding some mechanical strength.
Then slide the wiring off of the spool pin. It ought to expect similar this:
Now, using the soldering skills you’ve hopefully practiced since the in conclusion entry, solder it up, making the whole affair silver.
Remember non to utilization glops of solder, but to instead allow it menstruum into the wiring in 1 lawsuit it’s properly hot. If yous become far equally good gloppy it won’t check on the stud. Here are both bad together with adept examples:
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| Left: Too gloppy. Right: Could utilization a fighting to a greater extent than solder, but pretty good. |
If your band is equally good big, yous demand to roll it tighter the adjacent fourth dimension yous brand the loop; if it’s equally good small, yous may cause got added equally good much solder together with done a gloppy job. Practice this until you’ve got it right.
If it slides upward together with downward the spool pivot smoothly, amongst exactly a hint of friction, yous tin move hold out certain it volition check cleanly on the brass stud inward the terminal, equally seen below. Congratulations!
If you've got either of those ring-making methods right, we'll hold out re-wiring the motor earlier yous know it. Now in that location are exactly 2 to a greater extent than really tardily skills nosotros cause got to learn.
Go on to Part 5: Covering the Wires amongst Heat-Shrink Tubing
