Baldwin-Westinghouse Class B

[Jim Starbuck]

Do both worms spin the same way?

With this setup the worms would turn opposite directions. You could remove one of the worm bevel gears and run a common shaft with both worms on it to get them to run the same.

[timwatson]

Do both worms spin the same way?

DOH!!!  Nice catch @Chris333 ... lemme fix that!

[nickelplate759]

With this setup the worms would turn opposite directions. You could remove one of the worm bevel gears and run a common shaft with both worms on it to get them to run the same.

Or reverse the angle of one of the worms (whatever the technical term for that angle is).

[InterurbanModels]

I would not transmit traction torque through the truck center. Technically, a self contained N scale motor bogie with a micro motor should be possible. Something like this, but with double shaft:

[mmagliaro]

Interurban...
Do you have any drawings, or basic dimensions, you could post on this thing?   Like the truck wheelbase, wheel diameter, truck sideframe
dimensions?  It would help (all of us, I'm sure) to have some specifics as we mull over options and mechanical limitations of powering
this thing.

[Chris333]

Also that chassis would only have a 12:1 gear ratio. So it could either be fast or very fast. A good start would be 50:1 or higher.

[nickelplate759]

I would not transmit traction torque through the truck center. ...

Hadn't thought about that - but the old Atlas/Rivarrossi E8 and FM C-liner did this (vertical worm), and it was terrible!  The torque would rotate the truck and cause derailments unless you were very gentle with the throttle, which was tough to do on those engines.

[InterurbanModels]

Interurban...
Do you have any drawings, or basic dimensions...

Yes, of course. Give me two days to extract the essentials. Also, on Thursday I will recieve my Kato 11-105, so we can see if there is a way with this.

[mmagliaro]

Yes, of course. Give me two days to extract the essentials. Also, on Thursday I will recieve my Kato 11-105, so we can see if there is a way with this.

Thank you!

[timwatson]

You mean something more like this?

[Chris333]

Yessir!

[timwatson]

There is also this version with ball bearings. It's louder than the no bearing version but runs more smoothly.



Let me know and I will show video of it running

[peteski]

I would not transmit traction torque through the truck center. Technically, a self contained N scale motor bogie with a micro motor should be possible. Something like this, but with double shaft:

That to me looks like a stepper motor. Is it a standard permanent magnet DC motor?
DC motor will have 2 leads, while stepper motors will have 3 or more leads.

[peteski]

There is also this version with ball bearings. It's louder than the no bearing version but runs more smoothly.



Let me know and I will show video of it running

So this would be for a self-contained power truck, not a single motor driving both (swiveling) trucks??



Looking at the shape of the model's shell I not sure there is enough room for this mechanism in the end "hoods". The hoods are also off-center. I think a conventional single motor in the center design would be a more realistic option.

[Chris333]

https://d24rugpqfx7kpb.cloudfront.net/SCM/26AD0E1B8C66D0656FFE5EA5B014A996/0018_0020instr.pdf