GERMAN Schnellzuglokomotive BR01 steam loco

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rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

Edit:

To pass over any point, the distance from the first current collecting leading bogie wheel to the last current collecting trailing bogie wheel has to be longer than this area.

At the original steam loco BR01 (1:1) this distance is about 20,3m and scaled down to 1:450 this distance is 45,2mm at t-gauge.

To pass over any point my current collecting tender has to be supplemented by a current collecting leading bogie.
Vorlaufachsen_BR01.jpg
Vorlaufachsen_BR01.jpg (72.14 KiB) Viewed 5338 times
I just finished this bogie. It is a very very big challenge to contact the wheels by ultra small and ultra thin contacts made of fine gold.

I´m working on this - but first I´ll report the status of testing the big driving wheel next week.

BR,

Siegfried



Pls, join my video channel http://www.youtube.com/channel/UCvgCbsCFC2iOUI8HOvxL9Lg

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

Hello,

I found a solution to produce the driving wheels with sealed rivets
driving_wheel1.jpg
driving_wheel1.jpg (164.22 KiB) Viewed 5325 times
The photo is showing:

1) I drilled a 0,95mm hole into the driving wheels for my gears with integrated axles
2) The rivets were bended in form of a semicircle with a short rectangular pin
3) The drilled driving wheel was completed by the magnet ring, stuck on a plastic axle and the bended rivet was glued in the middle
4) At last the prepared cup was imposed on the pin and also glued on the wheel and removed from the plastic axle


BR,

Siegfried


Pls, join my video channel http://www.youtube.com/channel/UCvgCbsCFC2iOUI8HOvxL9Lg

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dkightley
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Location: Nottingham, UK

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by dkightley »

That's some nifty and blooming accurate bending of that pin!!! The picture doesn't do the job justice......those bits are SMALL!
Doug Kightley
Webmaster here and volunteer at the National Tramway Museum http://www.tramway.co.uk

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

Hello,

here you can see the body of my BR01, motor, gears, driving wheels and mounting parts.
Chassis_Teileumfang.jpg
Chassis_Teileumfang.jpg (421.06 KiB) Viewed 5305 times

All running surfaces have been polished - result: all driving wheels are starting turning at 0,2V (!) constant DC voltage
BR01_Testlauf0.jpg
BR01_Testlauf0.jpg (304.12 KiB) Viewed 5305 times

BR,

S²

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

Hello,

pls, enjoy my video of running steam wheels




BR,

Siegfried


Pls, join my video channel http://www.youtube.com/channel/UCvgCbsCFC2iOUI8HOvxL9Lg
rail450

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

Hello,

since I´m working on my steam loco BR01 I´m missing bogie wheels with an isolated axle to build up leading bogies without a frame round it.

This morning I did an absolutely crazy job:

1) ring magnet from bogie wheel removed
2) small axle pin 0,6mm removed by using my watchmaker lathe
3) thin hole 0,75mm drilled through the wheel
4) small plastic (PEEK) axle 0,75mm with a flange 1,3mm machined
5) plastic axle with flange pressed into the wheel
6) hole 0,35mm drilled into the plastic axle
7) ring magnet put on the wheel
8) drill 0,35mm used as the new isolated axle
9) job presented in this forum

Bogie_Wheel_PEEK_Inlay_0.jpg
Bogie_Wheel_PEEK_Inlay_0.jpg (80.5 KiB) Viewed 5258 times
Bogie_Wheel_PEEK_Inlay_1.jpg
Bogie_Wheel_PEEK_Inlay_1.jpg (72.44 KiB) Viewed 5258 times

BR,

Siegfried

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

Hello,

to do first driving tests I bulit a new leading bogie out of brass without any current collectors. Using non magnetic bogie wheels with isolated 0,35mm axles.
Chassis_leading_bogie.jpg
Chassis_leading_bogie.jpg (295.67 KiB) Viewed 5189 times
I machined a special screw with a pin at its end for seating the leading bogie and fixing the gear frame.
BR01_leading_bogie.jpg
BR01_leading_bogie.jpg (153.82 KiB) Viewed 5189 times
To be continued

BR,

S²

JoeMalinchak
Posts: 118
Joined: Thu Jun 04, 2015 8:35 am
Location: Greenfield TWP, Pennsylvania (Near Scranton)

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by JoeMalinchak »

Your project is looking great! I am looking forward to seeing it run.

Joe.

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

Hi all,

gluing the rivets into the steam wheels was the second-best solution only and therefore I practiced this now:


I adjusted the spring force of the spindle sleeve at my ACIERA 6 to a minimum.
The hand gear was replaced by a long rod with a balance weight at one end.
Steam_Wheel_Drilling_00.jpg
Steam_Wheel_Drilling_00.jpg (185.01 KiB) Viewed 4858 times

Chuck including the 0,2mm shaft drill was balanced with the weight until the shaft drill was pushed down by very very low force to the wheel.
Steam_Wheel_Drilling_01.jpg
Steam_Wheel_Drilling_01.jpg (135.29 KiB) Viewed 4858 times
Switching on the machine, the shaft drill was drilling the 0,2mm hole without any touch of my hands. In this way I drilled 24 wheels with only one shaft drill – no broken drill!
Steam_Wheel_Rivet00.jpg
Steam_Wheel_Rivet00.jpg (81.9 KiB) Viewed 4858 times

BR,

Siegfried

rail450
Posts: 112
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

I placed an order of the new real spoke caps.
Finished with thermo paint aerosol spray and
after a 1 hour burn-in at 300° C the spokes
are looking fantastic!
Spoke_Caps.jpg
Spoke_Caps.jpg (53.31 KiB) Viewed 4689 times
BR,

Siegfried

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

...a single spoke cap...
Spoke_Cap.jpg
Spoke_Cap.jpg (47.53 KiB) Viewed 5508 times

rvn2001
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Location: Foley, Missouri (St. Louis Mo area) United States
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rvn2001 »

That looks fantastic! especially considering it's T scale.
Thom Welsch

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

Today I received the new BR01 housing and chassis made of brass.
Both new parts are precision casting products.
The quality is excellent and is very sure the root of a small series.

With his update I show the development history of my BR01 locomotive
BR01_Entwicklung_Chassis.jpg
BR01_Entwicklung_Chassis.jpg (72.3 KiB) Viewed 5378 times
At first I milled a gearbox for testing gears and wheels. Followed by
printed brass samples for motor integration, I used printed plastic samples
to optimise space and to integrate cylinder and slider housing.
In the finished brass chassis the digital decoder takes also place.
As perfection a professional did the last and best precision casting chassis.
BR01_Feinguss_Chassis.jpg
BR01_Feinguss_Chassis.jpg (90.87 KiB) Viewed 5378 times

BR01_Feingussgehaeuse.jpg
BR01_Feingussgehaeuse.jpg (80.48 KiB) Viewed 5378 times
Here you can see the quality comparison of printed plastic housing and precision casting brass housing.



BR,

Siegfried


Notice: the BR01 housing is NOT made of plastic and painted gold, it is made of BRASS ;)

rail450
Posts: 112
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

First test of my German BR01 with new steam wheel current collectors.

Slow approach is the big challenge of micromechanics and will be improved again by special contact springs on steam wheel back side

pls, join the test video https://youtu.be/QkSpo0t-ow8

BR,

Siegfried

JoeMalinchak
Posts: 118
Joined: Thu Jun 04, 2015 8:35 am
Location: Greenfield TWP, Pennsylvania (Near Scranton)

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by JoeMalinchak »

Great work on your locomotive! Love the round house.

Please tell us more about how you are doing your steam wheel current collectors.

Joe.

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

I will do next tests
BR01_current_collectors.JPG
BR01_current_collectors.JPG (55.12 KiB) Viewed 5196 times
with this etched current collectors.

BR,

Siegfried

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

Update:

today I receved my 1st approach of etched current collectors (phosphorus bronze, 0,05mm)
Leitbleche.jpg
Leitbleche.jpg (166.16 KiB) Viewed 4818 times
This 6 types have to be tested.

BR,

Siegfried

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dkightley
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Location: Nottingham, UK

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by dkightley »

Looks as if you have a bit of testing to do.....

How are you going to mount the shim onto the metal chassis without it making electrical contact?
Doug Kightley
Webmaster here and volunteer at the National Tramway Museum http://www.tramway.co.uk

rail450
Posts: 112
Joined: Thu Oct 27, 2016 7:05 pm

Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

I´m using 0,1mm epoxy with same outline for isolation

rail450
Posts: 112
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Post by rail450 »

Update:

the isolation is very simple by using plastic chassis with glued current collectors
BR01_chassis_plastic.jpg
BR01_chassis_plastic.jpg (136.01 KiB) Viewed 3833 times
and so I willl run next tests with the new chassis.

BR,

Siegfried

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