Model Train Talk South Africa
Model Train Talk Workshop => Custom shop => Topic started by: capeklr on July 28, 2020, 08:40:55 PM
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Hi everybody,
today I will only show you two photos of a few parts of my new project.
It will remain a mystery for a while, lets see who can guess what I'm up to now. >:D
Lots of brass material.
Second photo shows me starting to mill the one part.
More photos to follow soon.
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Mmmmmmm...... can't wait..... :thumb:
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Absolutely no idea...
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I've been busy, a few more parts ready.
Any guesses?
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Mmmmmmm....... I'm still lost :biggrin:
But I think the wheels fit in 1 and 2 ?
So then it is some sort of wagon or Railcar I guess......
Looking good, very interesting.
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Looks like it could be the wheeled base of a gantry crane.
Steve ???
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Looks like it could be the wheeled base of a gantry crane.
Steve ???
Correct. :thumb:
Faller coaling crane.
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Nice one @Steve :biggrin: :thumb:
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Nice one @Steve :biggrin: :thumb:
When you're good. you're good ! :innocent:
Steve
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I'm impressed with both Steve and Jorg!
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Okay some progress has been made. :thumb:
I realized that gluing plastic to brass would not be very strong and durable, so I made little plates
that fit onto the four legs of the gantry crane that I could solder to the brass.
Photo one shows two of them.
Second photo all soldered together.
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First brass base now glued to the plastic frame, note the wire which will be used for the decoder in the cabin
of the crane.
The other side will get the other wire to complete the circuit.
This I will now leave in the clamp for some time as the glue sets properly.
Hopefully the plastic to brass joint will last for a while.
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Nice Jörg. Sehr Fein! :thumb:
Now I can see what the mystery is. Hmmmmm ;)
Keep going, when I hear decoder then this looks like a very interesting project. :biggrin:
Ciao
ColWer
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Awesome...... That is going to look insane...... Can't wait !!!! :thumb: :biggrin:
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Ditto Evert! :thumb: :thumb:
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Hi,
second brass beam glued in and waiting for the glue to set now.
:thumb:
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I couldn't wait, so still this evening I placed the wheels into the beams and put the frame on a smooth tile.
:thumb:
Standing square on all four wheels.
Rolling fairly smoothly, one wheel is a bit sticky, but I'm sure a few strokes with a file will sort that out.
I'll either have to countersink the holes or use other M2 bolts.
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Nice, Nice, Nice.... Love it...... Looks GREAT Jörg !!!! :thumb:
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:thumb:
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Looks great Jörg, Very nice. :thumb: :biggrin:
Ciao
ColWer
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Hi guys,
this is a project that I started many years ago, trying to get this crane/coaling station to work.
I have in the past tried to build the winch to let the hook move up and down and eventually bought
a miniature motor with gearbox in Germany. Problem is the motor needs to be operated with only 1.5V.
The Märklin digital system puts out about 19V. I have tried a voltage regulator, but the loss is very high and the motor very weak.
So I have to figure out something else now.
This is a photo of how it looks inside the crane cap now, small motor with self mage winch, it sort of works, but I definitely need to improve this.
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Nice...... oooooo a bruchless motor, that will be very smooth operation.
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Last night I found the original motor and gearbox that I build many years ago for this project.
Much to big.
What I do like about it is the weight which should keep the crane stable.
Found some other motors and a box of gears as well, so I will figure out something.
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Nice...... oooooo a bruchless motor, that will be very smooth operation.
Unfortunately this motor gearbox combination has ceased to function. >:(
I've tried all sorts of things, but to no avail.
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So I decided to built a new drive mechanism, I found my box of gears.
This is the drive to turn the operators cab and with that the crane.
As I have no idea how fast the motor spins and what sort of gearing I need I decided to build a prototype
out of old styrene.
Not really square, but to get an idea of the turning speed it should work.
Unfortunately it turns out that its a bit to wide on the one side. Red arrow photo two.
First photo shows the motor with gearbox.
Second photo the black arrow shows the shaft from my gearbox which is 2 mm diameter and the gear which has an id of 2,9 mm.
I'll have to turn a spacer in the morning.
Third photo shows the base of the operators cab with its cast on gear.
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Coming on nicely Jörg! :thumb: :biggrin:
Ciao
ColWer
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Very, Very cool..... Nice.....
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Hi there,
so this morning I turned the spacer that I needed and fitted it.
Works.
Even on the slowest speed setting it turn much to fast.
This is what the crane operator will look like. :blech: :blech: :blech: :blech:
So back to the drawing board and redesign this motor and gearbox, to get it smaller and slower.
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Hi Jörg, as you say, back to the drawing board, however the next step is greater than the first one. ;) :D
Let us know. Looking forward to the next update. :biggrin:
Ciao
ColWer
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You'll figure it out...
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Hi everybody,
some time ago I read an article in a German modeling magazine where somebody
modified a servo for continuous rotation.
I remembered this last night and promptly bought myself two servos at Clowns Hobbies today.
Of course I have already dismantled the one.
The little plastic gear stop has to be removed.
Red arrow in the first photo.
Second photo shows the gear removed with the offending nipple still in place.
Third photo shows the little motor.
Last photo the red arrow points at the potentiometer that also needs to be removed.
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Hmmmmm...... ::)
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:eek2:
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Very nice Yörg :biggrin:
Mmmmmm, you are giving me ideas here, I have two cranes on my N Scale Yard layout :thumb:
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Very nice Yörg :biggrin:
Mmmmmm, you are giving me ideas here, I have two cranes on my N Scale Yard layout :thumb:
Well lets see how I get this to work and then we can get together for your cranes and get them working. :thumb:
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Maybe time to change the header...? :innocent:
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Maybe time to change the header...? :innocent:
:biggrin:
Was thinking the same as well.
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Great minds think alike! ;)
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Hi everybody,
I had my thinking cap on again and came up with some ideas.
I did not like how Faller had prepared the crane to be able to turn via the Faller motor.
The motor sits in the frame and via a small gear that engaged with the operators cap it can be made to turn.
This means an unsightly motor in the frame.
Why don't I try and have the motor, now servo in the cap.
Photo one shows the original set up with the small gear that would normally pro-dude from the hole above the center hole which is the swivel point.
Photo two shows my current idea.
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Of course this means I will now have two servos in the cap, plus a decoder.
But it actually makes it a bit easier to connect everything up as I only need to power connections to the cap.
First photo shows my current idea how to mount the winch servo under the roof.
Second photo is how I built my pulley complete with a slip clutch.
I can still place a fiber washer in between to get a bit less slip. But it works. :thumb:
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Genial, schön Jörg. :thumb: :thumb: :thumb:
Nice work. Love it!
Ciao
ColWer
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Hi everybody,
a bit of progress.
The first servo is now in the cap working the winch.
Currently just works of a 5 V power supply, but this is just to check.
So the coal shovel can now be lifted and lowered. :thumb:
First photo shows this set up.
Next up to turn the cap.
Its going to be quite full in there with two servos and electronics.
In my last post I showed the photo with the new gear.
Well now its fitted.
Cut a thin styrene spacer to lift is slightly allowing the small gear to engage a bit better.
Calculated my center spacing for the small gear and drilled the hole.
Currently I am just using a M 2 bolt as the axle to try, this will be changed.
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:eek:
Personally mine would only have moved with the wind...a burp or a fart... :peep:
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Very nice Jörg.... :biggrin:
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Sehr schön Jörg, very nice. :thumb:
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Hi,
small bit of progress.
I modified the second servo tonight and connected it to the power supply.
Fitted the gear and viola the cab can turn.
For now just loosely holding it in my hand, but my idea works. :thumb: :thumb:
Now to properly mount this servo with some space left for electronics.
Stay tuned.
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Hi,
okay I mounted the servo last night with some contact glue just to hold it in position.
It works. :thumb:
The system still needs a bit of fine tuning and I need to reposition the winch servo by 1 mm to the side.
Then I need to figure out the electrics.
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Oops.
I wanted to paint the frame of the crane, due to the cold weather I carefully warm it up a
bit with a heat gun.
To much. ::)
Fortunately only the one ladder sustained damage.
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Then I finally found the base for this project which I built a few years ago.
Note the slot in the plywood, a small rod will pro dude through this slot and move the crane from side to side.
Some N scale track which will be cut in half so that I have one on each side for the crane to roll on.
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Off course for the crane to work there has to be a drive system.
Old printer motor with a toothed belt much like a cars cam belt.
Some electronics with limit switches. :thumb:
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Just awesome Jörg. :thumb: :thumb: :biggrin: :biggrin:
Ciao
ColWer
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Very, Very Nice Jörg.....
Starting to come together now.....
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Off course for the crane to work there has to be a drive system.
Old printer motor with a toothed belt much like a cars cam belt.
Some electronics with limit switches. :thumb:
Hi everybody,
this drive system was direct and the only way for me to control the speed was to reduce voltage.
Problem then is that the motor looses a lot of power.
I have been thinking about a geared speed reduction.
Today I made up a bracket to hold the gear and toothed belt sprocket, this will be pulled off the motor,
the motor will then get a 16 tooth gear to mesh with the 60 tooth gear on the shaft.
That will give me a 3,75 : 1 gear ratio allowing the motor to turn faster while reducing the speed of the crane.
Need to get a 3 mm reamer this week so that I can enlarge he holes in my two gears to fit the sprocket and shaft of the motor.
Here is a photo of the new set up, parts are just placed loosely so not straight.
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Coming on nicely. :thumb:
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Nice..... This is really going to look awesome when it is operational.....
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Hi,
so today I had a few minutes and quickly turned the spacer needed for the gear.
All assembled.
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To much Gin and Tonic. :biggrin: O:-) :lamer: :loco:
I start to assemble everything and then. ::) ::)
Those two gears are supposed to mesh. :eek2: :eek2:
Back to the drawing board.
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I'ts close! :D
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That's better. :)
Now it works. :thumb:
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Hi everybody,
no real work done, but I did find the two coal bunkers and can now place everything
together to check for fit and how it will look together.
I did glue down a sheet of cork which will now be the foundation for all the other things on this.
Just a few photos of what this looks like now.
Will play around with this for a few days and think it through.
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Yep, I like it very much! Nicely spaced. :thumb:
Going well Jörg! :thumb:
Ciao
ColWer
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Hi everybody,
hope you are enjoying the rain. :thumb:
I did find a long enough piece of N scale flex track last night so today I got to work to split it.
I also considered to have the slot for the rod that will move the crane inside the crane so it won't be that obvious.
Track loosely on the board.
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Nice Jörg! :biggrin: :biggrin:
Ciao
ColWer
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AWESOME Jörg! :biggrin: :biggrin:
You should have asked me for track, I have loads :biggrin:
Looking great.... Going to be a awesome feature on the layout.....
Cheers, Evert.
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:thumb:
Ayup, could have helped you with N track too...
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Hello everybody,
thanks for the offers for N scale track. :thumb:
A bit of progress to report, I have glued down the K track and then filled in the spaces between these
with a second layer of cork as can be seen in the second photo.
Then I carefully lined up and glued on the split N scale track, first the one, left to set for 24 hours and
then lined up the second one, tested and glued that down as well.
Last photo shows the crane on the track, yes it can roll freely. :thumb: :thumb:
Tonight I will try and solder wires to all the tracks and connect some power.
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Nice Jörg,
That is starting to look very, very good...... Can't wait to see it in person :biggrin:
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Looking good! :thumb:
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Very nice Jörg. :thumb:
ColWer
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Hi,
okay tonight was a big moment, I connected the track power and placed the crane on its track,
yes I have power at the top. :thumb: :thumb: :biggrin:
As can be seen by the light bulb in my fingers in the first photo.
Then I placed the 2 mm rod with a 90°bend in place and pressed the button.
The crane moves, its a bit jerky, but it works.
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It looks good Jörg, nice! :thumb:
Ciao
ColWer
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It looks good Jörg, nice! :thumb:
Ciao
ColWer
It sure does!
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The crane moves, its a bit jerky, but it works.
Hi there,
spent a bit of time with this as well and found that by adjusting the tension on the belt drive
the crane move a bit better.
I still want to improve the wheels a bit and then see if I can find the sweet spot for the belt tension.
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Hi there,
no update on my crane project, but I did find a very neat and well working
drive system on you tube.
This is for TT scale.
Much more complex compared to mine, but smoother operation.
https://youtu.be/8nVSf0z9RXQ (https://youtu.be/8nVSf0z9RXQ)
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Hi Jörg, right up your alley. It looks great. :biggrin:
Ciao
ColWer