Kadee #5 vs #148

I know that the #148 fits in some coupler pockets were the #5 will not and that is when I have used them, but I always try using the #5 first. Is anyone aware of a difference in performance between them?

i do prefer number 5s, at least the small parts are seperately changeable if they ever wear out or become damaged …

Rick,

While I prefer and use #58s on my locomotives & rolling stock, I have a few outfitted with #158s (whisker equivalent) and haven’t noticed any difference in performance.

Tom

I use mechanically lifted magnets that come up under the ties to actuate the magnetic uncoupling.

I find that while this method uncouples both the #5 and #148 couplers, the #148s work better for Kadee’s “delayed ucoupling”. They more consistently open a little wider, a little easier. I’ve been replacing #5s only for that reason. Both couple the same. Dan

Thanks for the replies.

Since you brought up those couplers maybe you can give me some advise. I have some Tangent boxcars on the way that come with #158. Are they going to work with the #5 and #148 couplers that I am using, or should I plan on changing them?

I originally started replacing my horn hooks and junky knuckles that broke with #5s. I started using #58s when they came out, but left the #5s in service. I’m happy to say that there is no problem with interoperability between them.

I use Kadee between-the-rails magnets, a few Kadee under-the-tracks magnets and a couple of Kadee electromagnets for remote uncoupling, but I’ve grown to prefer bamboo skewers, mostly for the ability to uncouple anywhere.

Hello All,

The first thing I do with all my motive power and rolling stock is to standardize the couplers to either a #5 or #148, depending on the coupler gearbox configuration.

When I need to body mount the couplers I prefer the #5 and the standard gearbox.

If the truck frames are OK I will use the Micro-Mark HO Truck Tuner (#82838) to clean out the bearing seats, then replace the wheels with Intermountain metal wheels.

When the trucks need replacing I use Accurail Roller bearing trucks, again using the HO Truck Tuner to clean out the bearing seats.

This gives consistent coupling and uncoupling along with smooth rolling.

Hope this helps.

Forgive me for being a little misguided.
Among the important differences between #5 and #148 are some the following two. One is the mounting dimensions of difference in the gearboxes (pockets). As shown in the cartoon, the protruding margin of the coupler head is different. (Since the dimensions numbers were measured with a ruler, I would like someone to re-measure them with a digital caliper.)

Therefore, if #5 is installed in #242, the phosphor bronze centering spring will protrude.

Hello All,

Check out the Kadee online Digital Catalog.

Page “HO 3.0” might have the information you are looking for.

Yes, the phosphorous bronze spring does protrude beyond the end of the gearbox.

If this visually bothers you a black Sharpie will do the trick.

Hope this helps.

Absolutely yes. #148 performs better on the layout for me than #5. I do still have some #5 couplers on some rolling stock, but I greatly prefer the spring action of the #148.

If it’s any indication, my local train store cannot keep #148 or especially #158 in stock, but they always have #5 couplers in stock. So, clearly most of the customers now are embracing the whisker spring couplers.

Actually much of my rolling stock and loco’s have #158 couplers. I only rarely have any separation issues with the smaller head couplers.

John

I’m in trouble because Kadee’s catalog doesn’t show the measurements numbers in this cartoon.

jjdamnit, what do you think is another important difference between #5 and #148?

BN7150

The numbers in the cartoon refer to the coupler boxes, not the couplers.

Hello All,

When choosing a coupler, I consider the limitations of the installation.

If a #5 will fit in an OEM coupler pocket great!

With some installations, a #148 will drop in with no problems.

I had to modify the coupler boxes in four (4) Bachmann GP40s.

At first, I tried to use the #148s as a drop-in replacement.

For some reason, this installation caused the whiskers on the couplers to break off. I did send back all the faulty couplers to Kadee for inspection.

I ended up filing out the coupler pockets to accommodate the #148s and #262 Gearboxes.

Removing the needed material from the body to install a #5 and #242 Gearbox would have taken unnecessary time and effort.

Using the #148s made more sense.

If I am adding body-mounted couplers to an existing piece of rolling stock or scratch-building a car I will install #5s with #242s.

Each coupler has their plusses and minuses.

It’s up to the user to determine the best application for optimum outcome.

Hope this helps.

Hornblower, the basic concept of terms is different between Japanese and English, so it’s difficult to express. Is “measurements” appropriate for “numbers”?

I’m in trouble because Kadee’s catalog doesn’t show the measurements in this cartoon.

Rick,

I have not had any issues with #58/#158s coupling or staying coupled to the few #5s I still have on a handful of rolling stock. If you want to be consistent, you can always swap out the semi-scale couplers on your Tangent boxcars with #5s.

Tom

Hello All,

This past week I replenished my stock of #148 couplers- -directly from Kadee.

Along with the couplers, Kadee included the flyer; HO-Scale Coupler Primer Handout in the shipment.

On the second page, they talk about the compatibility of their “Standard” and “Scale” coupler heads.

For optimum operating performance, they note that the couplers should align along the horizontal centers.

They even go so far as to say…

“Kadee® recommends “standard” coupler heads over “scale” coupler heads. This will help with rough track issues.”

Hope this helps.

Like Tom, I have not had issues with 5/148 & 58/158 staying coupled together.

If you have smooth trackwork, and the couplers are all at the correct height, there really shouldn’t be any issues.

IMO, if trackwork or coupler height issues are a problem, then the scale/oversized head is not the problem. The trackwork or coupler height issue itself is the problem. Fix the actual problem, and the size of the coupler knuckle will not matter at all.

Indeed. I never have problems with properly installed and adjusted couplers, because the third component is always the trackwork. I’m very fussy about mine, and I keep everything as level as possible and even try to avoid grades. I have very few derailments and even fewer unexpected uncouplings because I am probably over the top meticulous about trackwork.

I vastly prefer the #148s to the #5s. In my experience, with enough use, those spring plates will eventually wear out (ie stop springing) and the couplers won’t center. This doesn’t happen with the 148s. I have found installtions where a spacer helped with the 148, and on the (new) Walthers Mainline Horizon cars I just bought, for some reason the 148s won’t sit at the right height and the pseudo-5s they have will. In most cases, though, for me it’s whisker all the way.

Aaron

I try to always use Kadee couplers in Kadee coupler boxes.

I started building train cars before the 148 was manufactured. The #5 in a Kadee box works perfectly well for me. I have never had to raplace one because of poor performance.

The 148 in a Kadee box seems to be a superior design, so that is my go-to now.

I know that neither works perfectly in a Life-Like Proto-2000 coupler box on an 8,000 gallon tank car without shims inside the box.

[banghead]

-Kevin