What about this one:
Hrvoje
P.S.
Unfortunately, it is too slow (4000 RPM/12 V). Sorry.
4000 RPM at 12 volts won’t cut the mustard in an Athearn looking for 12000 RPM.
It has to be the FK-280SA 14200 for the correct RPM for an Athearn.
Mabuchi must have dozens of motors using the 280 reference with dozens of RPM.
Mel
My Model Railroad
http://melvineperry.blogspot.com/
Bakersfield, California
I’m beginning to realize that aging is not for wimps.
Even the Mabuchi Motor Chart doesn’t mention voltage, RPM or shaft.
https://www.mabuchi-motor.com/product/knowledge/classification/designations.html
Mel
My Model Railroad
http://melvineperry.blogspot.com/
Bakersfield, California
I’m beginning to realize that aging is not for wimps.
They do on the product specifications for each model, even though it’s not encoded in the model number. Can’t even really calculate it since they don’t mention amps, though you do get the wire size (and can figure resistence) and number of turns (can probably get pretty close to length with the armature size).
That implies you can get two motors with identical model numbers that are rated at different voltages, though in practice I think they will just make one and rate the voltage at the maximum the windings can withstand without melting, and give you the RPM at that voltage. If a motor is listed at 18 volts but is a little fast, at a max of 12 volrs it might be fine.
–Randy
Over the last year or so I have ordered about a dozen cheapie motors off eBay trying to find usable motors for my HO locomotives. I use the Canon EN22 as my reference motor. I found the Canon specs to be very accurate.
I created a MEL mini motor dynamometer using a Mabuchi SF-266SA 1G160 as a generator with a shunt current meter. The meter is a 5 digit 0-3 amps. I calibrated the output against the Canon EN22 for my reference. It spots a puny motor instantly.
So far the best 7200 RPM Single Shaft motor I’ve found is the Mabuchi SF-266SA 1G160.
The best Athearn replacement 12300 RPM dual shaft motor I’ve found is the Mabuchi SK-280 14200.
The best thing to look for in the listings is Stall Current, minimum 1 amp at 12 volts stall current is the best quickie identification for power.
Canon EN22 locked rotor Current 1.10 Amps.
Mabuchi SF-266SA 1G160 locked rotor 1.2 Amps.
Mabuchi SK-280SA 14200 locked rotor 1.4 Amps.
The currents above are not manufacture published specs, those are Mel measured currents at 12 volts.
Mel
My Model Railroad
http://melvineperry.blogspot.com/
Bakersfield, California
I’m beginning to realize that aging is not for wimps.
I have some of those. Torquey, powerful, cheap, but sound like a big block Ford with it’s headers uncapped at a certain mid range speed. Dan
Try to put just one drop of good oil (e.g. Labelle) on each shaft bearing. It could make a difference. Those motors come totaly dry. I have two, they are more quiet than some Roco motors (those used in Genesis locomotives).
If you want silent motor, then it is not easy to avoid coreless motors. They are more expensive, but with a good reason. With good DCC decoder (e.g. ESU, Zimo), they will provide running characteristics that are very difficult to match by iron core motors. But replacement of standard iron core motor with coreless one can cause new problems - only then it is possible to notice that gears, contact wipers, linkage (at steam locomotives) also contribute to “noise”.
One example of contact wiper “noise” can be heard here, this is my last conversion of Fleischmann steam locomotive from old three pole pancake motor to Japanese coreless motor:
Motor and gears cannot be heard - only contact wipers (on loco wheels, those on tender wheels are silent) and rolling of wheels on tracks. This motor was bought on ebay, for approximately 3-4 USD. Obviously a consequence of mass production.
Here is example of slow speed performance of Roco locomotive with Escap coreless motor and Zimo decoder.
Hrvoje
I just ordered 10 for $38 including shipping. So 3.80 a piece from. These guys.
https://www.tnetocury.com/index.php?main_page=product_info&products_id=541213
Let us know when your order arrives, I couldn’t find any info anywhere on the seller.
$25 for shipping turned me off, I was going to order some until I saw the shipping cost.
Mel
My Model Railroad
http://melvineperry.blogspot.com/
Bakersfield, California
I’m beginning to realize that aging is not for wimps.
That’s realistic shipping when it’s not subsidized like China to US is. Plus if you order over $40 from them, shipping is free. And even with $25 shipping, it’s $3.80 per motor - total cost is what matters.
–Randy
Will do.
Looks promising got a notification from USPS about the shipment.
Package left Utah yesterday. Should be here this week will post photos
These use to look exactly like the Kato HM5 motors. Not sure why they changed the style. (my ebay purchase history links to the quoted motors now if I were to re-buy the HM5 looking ones)
Anyhow, I purchased 40 of the original style assuming they would “disapear” from availability at some point.
I used them in my most egregious Athearn RTR’s (couple SD50 coffee grinders and a couple SD40T-2 clickers) and they all are whisper quiet with the Kato knock offs. I use them along with A-Line hex flywheels (exact same as Athearns).
If the quoted ones are as smooth and quiet as the previous style, these motors are very nice.
Any news yet?
Another month and a half since the last post and still no word. the Tnetocury.com website also seems to no longer be registered. I’ve been poking around looking for a low cost motor to repower some AHM/Mehano units and various Blue Boxes. Got all excited about the Mabuchi only to learn they’ve been gone for six months. I wonder if it’s for similar reasons to the general electronics supply problems?
Uh Yeah. After an investigation Pay Pal refunded my money.
I did get these however will see how they do.
https://a.aliexpress.com/_mKLFoBP
Had to take the outer metal cover off to fit but I don’t even know why it’s there.
Anyone else use these motors?
Is that a Mibuchi? Can’t quite tell from the listing, but it looks like it’s a little slower than an Athearn stock…not per se’ a bad thing. This one might also work https://www.aliexpress.com/item/1005001982757024.html?spm=a2g0o.detail.1000023.6.24d53c0fpZXHjw
I have a pair of those motors on order off eBay due late next month. It is slightly larger than the Mabuchi but very close to the specs.
Mel
My Model Railroad
http://melvineperry.blogspot.com/
Bakersfield, California
I’m beginning to realize that aging is not for wimps.
No it isn’t a Mabuchi. It was all I could find at the time that was close and had dual shafts. Ordered some of the FK-280SA-14200 from Amazon twice and got single shafted Mabuchi Motors. They refunded the money and let me keep the 3 motors not sure what I will do with them.