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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Postby rail450 » Fri Nov 16, 2018 1:20 pm

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 1324 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
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Postby rail450 » Fri Nov 16, 2018 7:24 pm

Hello,

I found a solution to produce the driving wheels with sealed rivets

driving_wheel1.jpg
driving_wheel1.jpg (164.22 KiB) Viewed 1311 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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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Postby dkightley » Sat Nov 17, 2018 1:44 am

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
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Postby rail450 » Sat Nov 17, 2018 1:16 pm

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 1291 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 1291 times



BR,

rail450
 
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Postby rail450 » Mon Nov 19, 2018 11:47 am

Hello,

pls, enjoy my video of running steam wheels




BR,

Siegfried


Pls, join my video channel http://www.youtube.com/channel/UCvgCbsCFC2iOUI8HOvxL9Lg
rail450
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Postby rail450 » Tue Nov 20, 2018 10:31 am

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 1244 times



Bogie_Wheel_PEEK_Inlay_1.jpg
Bogie_Wheel_PEEK_Inlay_1.jpg (72.44 KiB) Viewed 1244 times



BR,

Siegfried
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Postby rail450 » Tue Nov 27, 2018 5:06 pm

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 1175 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 1175 times


To be continued

BR,

rail450
 
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Postby JoeMalinchak » Wed Nov 28, 2018 7:20 am

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

Joe.
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Postby rail450 » Fri Dec 28, 2018 6:34 pm

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 842 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 842 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 842 times



BR,

Siegfried
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Re: GERMAN Schnellzuglokomotive BR01 steam loco

Postby rail450 » Wed Jan 23, 2019 10:17 pm

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 672 times


BR,

Siegfried
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