I. Must. Kitbash. THIS....

[Cajonpassfan]

This one:

I think those were gears from a servo.

/>
Has a 82:1 gear ratio.

Wow, and it comes with sound, too😜
Otto

[cbroughton67]

This one:

I think those were gears from a servo.
Has a 82:1 gear ratio.

@Chris333 That is badass...

[narrowminded]

Resurrecting older videos?  This one has been my effort.  With this 3D printing the project is moving at a decent pace.  Working on some Fast Tracks turnouts now, get a test track laid with the new track bed and prototype turnouts (will be working on methods to make RTR ones) and then  FINALLY, get at finishing off a mine loco, FINALLY!

https://www.youtube.com/watch?time_continue=77&v=HkQlHwVIZHw

[Lemosteam]

@narrowminded , fixed it for you:

[peteski]

This one:


Has a 82:1 gear ratio.

Not only he can restore 1:1 automobiles and install hydraulic suspensions, he can create microscopic mechanisms!  He is badass  !
Not only a multi-stage gear reduction, but the 3-point suspension is genius! That maximizes not only the adhesion, but electric pickup too.

[Chris333]

lol  I still have the metal shell of that chassis, but I pulled the wheels and worms out to put in this:

So if 82:1 isn't enough for you this one has a 210:1 ratio. This is the double worm reduction I was talking about.

/>I still have it and it still runs:


This was also back when I etched all the brass parts myself here at home.

[mmagliaro]

Two worms in the drivetrain.... Chris, that is genius. What superb craftsmanship!

[peteski]

Two worms in the drivetrain.... Chris, that is genius. What superb craftsmanship!

And he can make your car (automobile) hop like a bunny rabbit (or a VW Rabbit). 

[randgust]

That split-frame equalization pivoting on the worm driveshaft is genius.    I've never seen that done before and it's exactly what I was talking about.   My "Nigel Nightmare" 4-wheel mine locomotive drive that Richie gave me made an attempt at equalization in an incredibly complicated manner and this is so simple in comparison.

You have to wonder if the new Searails approach will do this, because this is the missing link in all the designs I've seen.   I'm still not exactly sure how you managed to do electrical pickup on it though, even with the photos.  Just the one back wheel wiper insulated with a bit of styrene and the rest through the frame?

Just for the record, Chris is the one that got me going in resin casting and tried to teach me photoetching, which I managed to do but never to his level.   So there's ample accolades, this is just one more.

[Chris333]

I'm still not exactly sure how you managed to do electrical pickup on it though, even with the photos.

One side transfers power through the axles to the brass frame and I just soldered one motor wire right to the frame. The insulated side of the wheels got the PB wiper solder to a small piece of circuit board.

[Lemosteam]

Love where this thread is headed.

Chris, where do you get your wheels, axles and gears from?

The wheels on my prototype look to be 33" diameter (5.24mm dia in N).

Wheelbase is ~74"-75" (11.82mm in N)

[peteski]

One side transfers power through the axles to the brass frame and I just soldered one motor wire right to the frame. The insulated side of the wheels got the PB wiper solder to a small piece of circuit board.

That is a typical design used in factory-made brass models.  Wheels on one side are insulated with wheel wipers (insulated from the chassis) picking up power, with the chassis/frame itself being used for the other side's power pickup.  Perfect application for Chris's powered chassis design!

[sd45elect2000]

I watch these threads with interest as I have some N scale steeplecab motors to power.

[Chris333]

These particular wheels are NWSL wheelsets to replace Grandt Line HOn30 truck wheelsets that are plastic. You can see they don't have pointed ends. This was back before Fox Valley wheels. I'd use them now. The Youtubes say that I built that back in 2008.

[narrowminded]

@Lemosteam Did you figure what dimension you can work with from the rails up to that first step in the body, allowing for the body thickness?  That might be a trouble area.