Kadee Couplers

Kadee Couplers

Postby AstroGoat760 » Sun Apr 29, 2018 11:55 am

For the benefit of those that are either unfamiliar/uncomfortable with the process of assembling and mounting Kadee 713/714 couplers, I have decided to make a "tutorial" of sorts of the process.
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Part One: The Basics
There have been a few types of couplers used prior to the introduction of the magnetic knuckle coupler, such as the Kadee 713/714 and the Micro-Trains coupler. The predominant type was the HP Products "link" coupler, followed by the HP dummy knuckle coupler. Other makers did make dummy knuckle couplers as well that interconnected to the HP dummy knuckle couplers. Link Couplers do not readily couple to knuckle couplers.

Here is a picture of the HP Link Coupler (top, compared to a Kadee 714 (bottom):
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Re: Kadee Couplers

Postby AstroGoat760 » Sun Apr 29, 2018 11:58 am

Here is the Kadee knuckle coupler next to and coupled to the HP dummy knuckle coupler:
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Re: Kadee Couplers

Postby AstroGoat760 » Sun Apr 29, 2018 7:11 pm

Part Two: Tools of the Trade
Here is a photo of the tools that I use on the majority of assembling and mounting of Kadee couplers:
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Re: Kadee Couplers

Postby RodTT » Tue May 01, 2018 4:54 am

What is that Kadee item? Is it TT specific?
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Re: Kadee Couplers

Postby AstroGoat760 » Tue May 01, 2018 5:07 am

RodTT wrote:What is that Kadee item? Is it TT specific?

Actually the Kadee #713 and #714 couplers are HOn3, but they work for TT scale.

There is also the Kadee #702 coupler assembly jig that makes assembling the #713 and #714 couplers a whole heck of a lot easier.
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Re: Kadee Couplers

Postby AstroGoat760 » Wed May 02, 2018 9:38 pm

Part Three: Assembly and Mounting of Kadee Couplers
For this demonstration, I will use the Kadee 713 coupler, as they are a rust-brown colour and as such will show up better than the 714 couplers, which are the same shade of black as the Kadee 702 assembly jig.
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First, prep the car for mounting of the couplers. This includes drilling out mounting holes, using the top plate of the coupler pocket as a guide. I like to remove trucks as well, as it gives more space to work with:
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Next, open the packet of parts and make sure that all parts are there. There will be four sprues with four parts each on them (two pairs of couplers), between 5 and 8 springs, 4 or 5 uncoupling pins, and 4 screws. The extra springs and pin are spares, in the event of loss or breakage. (It CAN happen!).
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Following that, separate the four parts from the sprue (you can do one coupler at a time, or do the couplers in pairs, like I do). Clean up burrs and flash as needed.
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Take the top half of the knuckle and a coupler pin, and fit them together. I use a set of needlenose pliers to help hold the pin, as it is a small part.
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After that, put the two parts of the knuckle together, making sure that it forms a knuckle:
IMG_2265.JPG
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Re: Kadee Couplers

Postby AstroGoat760 » Wed May 02, 2018 9:54 pm

The remainder of this tutorial will proceed with the assumption that the assembler has a Kadee 702 assembly jig. I have two as I tend to assemble these in pairs.

It is possible to assemble without using the 702 jig, but it does take a lot longer and is easier to mess up if you do not have the jig. Perhaps if I feel ducky enough, I will do a further tutorial as how to assemble the Kadee 713/714 without the 702 assembly jig.

Retract the holder on the assembly jig. It will lock in place until pushed down upon:
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Place a pocket base in the assembly jig:
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Insert the knuckle and engage the holder by pushing down on it. Ensure that the coupler is relatively straight in the box:
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*** THIS IS THE TRICKY PART ***


Take one of the springs and insert into the cavity in the knuckle coupler and box. I use an exacto/hobby knife and a small flat screwdriver to insert springs.
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Take the box lid and place it on the coupler assembly:
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Holding the assembly together, remove it from the jig. I use my needle-nose pliers for this magic trick:
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Re: Kadee Couplers

Postby AstroGoat760 » Wed May 02, 2018 10:05 pm

Insert the mounting screw and place against the mounting hole on the car:
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Once the coupler is mounted, "exercise it", by moving it from far left, then release, and then to the right and release. It should snap back to center each time. If not, adjust the mounting screw, and check the assembly if needed. If the assembly came apart during installation, the spring may have jumped up or moved perpendicular to the direction that it should be, neither of which are workable options. Diasassemble and start over if needed.

Once the couplers check out, replace the trucks and you are done with the mounting portion.
CONGRATULATIONS!

Wash, rinse, and repeat for however many cars you need to add couplers to.
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Re: Kadee Couplers

Postby AstroGoat760 » Wed May 02, 2018 10:12 pm

Final Part: Adjusting the Coupler Pin.
The coupler pin on the Kadee 713/714 is sized for HOn3 rolling stock, which is too tall for TT.
The pin must be shortened, otherwise it will catch on turnouts and crossovers.

I use my needle-nose pliers to bend the pins down somewhat, and then trim the excess off as flush as I can with the face of the knuckle. Failure to trim the pin can cause binding of the couplers, especially on curves.
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Re: Kadee Couplers

Postby AstroGoat760 » Fri May 04, 2018 4:31 pm

Are there any details that I need to add to the tutorial?

I do plan on doing a video tutorial, when I get this one down pat, for the benefit of those that learn better by watching.
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