Lionel conversions

Re: Lionel conversions

Postby RodTT » Sat Jul 13, 2019 1:01 pm

After much fettling I think I've finally got the trucks sorted. I've also added some packing as suggested to stop them dropping down too much.
I found that the corners of the rear truck were catching on the end of the fuel tank. I don't know if this was because it's slighty too far back, I thought I'd been pretty careful with the hole in the chassis. Anyway I cut away the ridged parts of the tank and rounded off the edges of the truck.
Also, here's a photo of my intended motor assembly: a three-sided brass casing to hold it upright on the chassis and support the light board, a length of brass underneath to act as a bit of a heat sink, and a piece of card under that to hopefully insulate the chassis a bit from the heat. All that just about fits inside the body shell.
I've cut the light board into several isolated sections to accommodate the wires from the Zimo MX617 decoder (from which I'll have to cut the plug). If that decoder doesn't fit inside the body, nothing will! LEDs and resistors are also to hand.
So - next stage is assembly! I intend to set it up for DC first to make sure it runs ok, then fit the decoder and light when I know all is well.
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Re: Lionel conversions

Postby RodTT » Mon Jul 15, 2019 6:04 am

Is it best to lightly lubricate the gears or leave them dry?
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Re: Lionel conversions

Postby MacG » Mon Jul 15, 2019 6:30 am

Grease them lightly.

I have small Kuehn decoders (N025 or N45) or Soundtraxx Tsunami TSU-750 decoders in it.
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Re: Lionel conversions

Postby RodTT » Mon Jul 15, 2019 8:20 am

MacG wrote:Grease them lightly.

I have small Kuehn decoders (N025 or N45) or Soundtraxx Tsunami TSU-750 decoders in it.

What speaker did you use? And did you put it in the fuel tank?
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Re: Lionel conversions

Postby MacG » Mon Jul 15, 2019 12:05 pm

I have begun with a sugar cube speaker only in the tank. Then I switched to the 15mm (1/2") round Soundtraxx speaker with baffle kit inside the cab. With a modified Lok-n-Roll chassis is there the space for.

Today a sugar cube with baffle should be working well.
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Re: Lionel conversions

Postby RodTT » Wed Jul 17, 2019 1:01 pm

Here we are with the motor fixed down and the drive train connected. I used one short and one medium cardan. As Ian has commented, I found that my batch of Chinese motors has two slightly different shaft lengths; I used the shorter one.
A quick test on DC before soldering most of the wires has at least established it runs up and down.
So now to add the decoder and hopefully lights, and get everything soldered up!
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Re: Lionel conversions

Postby ConducTTor » Wed Jul 17, 2019 11:57 pm

If you can find some, I'd strongly suggest adding flywheels.


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Re: Lionel conversions

Postby RodTT » Thu Jul 18, 2019 9:57 am

ConducTTor wrote:If you can find some, I'd strongly suggest adding flywheels.


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There are these: https://www.nbrasslocos.co.uk/nprecursor.html (bottom left of page, 9mm dia, 1.5mm shaft). However, as I've got everything in place now I'm inclided to see how it goes without as others seem to have managed, and consider flywheels for my next conversion :smile:
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Re: Lionel conversions

Postby MacG » Thu Jul 18, 2019 10:13 am

These flywheels would be okay.

At DCC you can also use a keep-alive circuit with a charging regulator (to handle the inrush current) and 25V capacitors. SMD ceramic capacitors would be most recommended.

See at the Zimo manual page 60.
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Re: Lionel conversions

Postby RodTT » Thu Jul 18, 2019 2:58 pm

MacG wrote:These flywheels would be okay.

At DCC you can also use a keep-alive circuit with a charging regulator (to handle the inrush current) and 25V capacitors. SMD ceramic capacitors would be most recommended.

See at the Zimo manual page 60.

Thanks for that information. Hmmm...flywheels, DCC sound, keepalive - sound like good ideas for my second Lionel conversion! Meanwhile, I think I'll keep this first one simple.
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