Enhorning(?) F7...

Thanks for the observations.

So far, mine still runs really well and as I mentioned earlier in this discussion,the addition of those side frame to motor wires seems to have made all the difference in the world.

It's not quite as silent as my American Models RS3, but is pretty close and given it's weight, is a better puller. 😊

All in all, a pretty darn good model; makes one wonder why there aren't more of these still around...

Mark in Oregon

@Strummer posted:

Thanks for the observations.

So far, mine still runs really well and as I mentioned earlier in this discussion,the addition of those side frame to motor wires seems to have made all the difference in the world.

It's not quite as silent as my American Models RS3, but is pretty close and given it's weight, is a better puller. 😊

All in all, a pretty darn good model; makes one wonder why there aren't more of these still around...

Mark in Oregon

I've done similar mods to several of my AMT/Auburn/KMT/Kusan O gauge F units (additional wiring to connect both rollers was the key for my engines; I was able to double motor several of them as well - they have 7 pole Pittman motors and they can pull stumps, but can't coast at all and come to a screeching halt if the power is cut off abruptly).

@Rusty Traque posted:

The "mushrooms" are air intake and boiler exhaust steam generator castings  for passenger service.  They're not exactly in the right place.

Rusty

I just came across an eBay listing for an A B set of O scale All Nation F units; both have those generator housings.

Again, these are something(s) I hadn't noticed before... 🤔

Mark in Oregon

@Carey Williams posted:

Hello all...you may wish to see the drive on an early Enhorning ...yes it runs ..yes it's loud

Cheers Carey

I'm quoting this again, just to make sure Carey is notified and will hopefully respond...

So Carey; since you obviously have a thing for all things vintage, you might be interested in knowing that the Marnold stuff I've been posting about in the "Electrical" section runs my Enhorning example just beautifully. 🙂

Mark in Oregon

Hello Mark ...I tried using the Manold throttles ...,as they look neat ....but they would not hold up to the amperage for the old O scale .......

Cheers Carey

@Carey Williams posted:

Hello Mark ...I tried using the Manold throttles ...,as they look neat ....but they would not hold up to the amperage for the old O scale .......

Cheers Carey

Thanks Carey

Yeah, I suppose one would have to get lucky to find one of their larger "B85" 8 1/2 amp units rated for O scale... even then that may not be enough for those huge K&D-type field-wound motors that are probably in a lot of the engines you have...

Mark in Oregon

Update to this thread; was able to score a few more pieces, including an example of the earlier drive (like the one Carey showed us):

Because of the extreme weight of those lead gearboxes, the plastic(!) frame has become warped and as such the front drive is slightly out of alinement, which I guess is not all that unusual for these early models. I've has it apart several times, cleaning, adjusting, and it does run "slightly" better afterwards.

This type of drive is much noisier than the later type (of which I have 2) so this will probably not see much running time, but that's ok; I'm happy to have an example just the same.

Mark (still) in Oregon