Momentum wagon candidate?

DGE-Railroad

DGE-Railroad

Registered
26 Jan 2020
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United Kingdom
I have a momentum/inertia wagon on the "todo" list and had been thinking of using the ubiquitous Zecar (which now seems pretty expensive in the UK, incidentally)

I was playing with my 3yo son and some Lego this morning when I stumbled across what I think may be a possible alternative, assuming the final drive connection for the axle can be solved, which may be as simple as using a lego train axleset.

I do have a Zecar sitting in the cupboard and would say they're about equal in terms of flywheel action. The Lego offering may be a little stronger.
20200729_091832.jpg
 
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DGE-Railroad

DGE-Railroad

Registered
26 Jan 2020
212
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United Kingdom
My glamorous assistant and I tried a quick test of the unit with standard Lego friction-tyre wheels and no additional weight.

It manages a 26 degree incline on its own. Sadly the Lego wheels are a little on the small side though.

Still, interesting stuff!

Lego unit friction test
 
Fred2179G

Fred2179G

Registered
20 Apr 2017
471
USA
OK- looks good. So what is its actual name/part number?
 
PhilP

PhilP

G Scale, 7/8th's, Electronics
5 Jun 2013
26,184
Tamworth, Staffs.
DGE-Railroad

DGE-Railroad

Registered
26 Jan 2020
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48
United Kingdom
The part number I have on the blocks I have tried is 54802. They seem to crop up for around £5 or so. Several on eBay at the moment, but I suspect they're equally obtainable through somewhere like Bricklink.

I need to start my SRRL Bowaters Boxcar project and get it put in there to really try it out properly. I think I may look at getting some Slaters wheels or similar, to see how easy it would be to mate a lego shaft to them. The other option would be a steel axle with broached splines into it, which'd probably negate the cost, or to chain drive from the Lego shaft to the truck axle.
 
dunnyrail

dunnyrail

DOGS, Garden Railways, Steam Trains, Jive Dancing,
25 Oct 2009
17,541
72
St.Neots Cambridgeshire UK
Just had a look in bricklink and there appears to be lots of them for sale in quite a few different countries as well.