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GG1

Postby JoeMalinchak » Tue Apr 02, 2019 4:53 am

I am working with Jesse on the design of this GG1. He designed the beautiful body, and I designed a motorized chassis that would fit. We still have some work to do. Jesse is working on some scale pantographs, and other details, and I am making a few small improvements to the design.

Joe.
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Re: GG1

Postby JoeMalinchak » Tue Apr 02, 2019 5:03 am

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Re: GG1

Postby JoeMalinchak » Tue Apr 02, 2019 5:04 am

I use a micro receiver, and battery to test my chassis, before running it on the track.
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Re: GG1

Postby rail450 » Tue Apr 02, 2019 6:33 am

Hi Joe, hi Jesse,

your work looks great!

What kind of material are you using for the body?

BR,

Siegfried
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Re: GG1

Postby MMBUFBerlin » Tue Apr 02, 2019 11:47 am

Great locomotive!
Basically I would build the GG1 like that:

GG1_Antrieb.jpg
GG1 drive
GG1_Antrieb.jpg (180.83 KiB) Viewed 199 times


It even fits a 6mm diameter motor, for example a very strong MAXON:

http://www.directindustry.de/prod/maxon ... 12475.html

For this, only the gears Zx would have to be larger.
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Re: GG1

Postby jesse6669 » Tue Apr 02, 2019 2:19 pm

rail450 wrote:What kind of material are you using for the body?


It's 3D printed-- Shapeways Smoothest Detail Plastic material. The current design is also somewhat refined from this early model, having (in addition to other details) correct pantograph mounts. As Joe mentioned, I've designed accurate pantographs to be etched in stainless steel (not the ones shown) as well as the Pennsylvania Railroad style catenary equipment found on the NE corridor. Joe's working wonders getting this "motor" powered I must say!
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Re: GG1

Postby JoeMalinchak » Tue Apr 02, 2019 6:12 pm

Hi Uwe,

I had several ideas on how to make this drive unit work. One was to use two small 4mm motors powering each bogie. However, space is at a minimum. Your idea is basically the same as mine except I am only driving one side. Simple, less parts, and it has a tight turn radius. I am using a very powerful 6.5 ohm 4mm motor out of a quad copter, as a standard 6mm motor will not fit the body. However, the maxon motor looks great!

I also used the gears out of an old 35.5mm chassis instead of the traditional worm gear. It fits in the space, and provides much smoother operation with any jamming of gears.

Joe.
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Re: GG1

Postby MMBUFBerlin » Tue Apr 02, 2019 8:13 pm

Hello Joe, I would have to lie if I wrote here that I find your drive good. But I also understand that it's hard to start all over again.
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Re: GG1

Postby rail450 » Tue Apr 02, 2019 8:30 pm

Hi Joe,

I also prefer your solution instead a worm gearing. Very important is the fact, that the big gear out of the chassis it the only one which is driving the turnable bogie correctly because it is convex!

BR,

Siegfried


PC: pls, try the 4mm motors out of this small servo https://hobbyking.com/de_de/ultra-micro-digital-servo-1-9g-0-05sec-0-12kg.html
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Re: GG1

Postby JoeMalinchak » Wed Apr 03, 2019 12:42 am

Hi Uwe,

It is great that we can share each other’s thoughts and ideas on forums like this one, that’s what it’s all about. We can probably count on one hand the people who are designing and building working TGauge locomotives. We are all pushing the limits on what can be done, and we all have different ideas on how to do it. This drive system works for me, and I am happy with it. This is a video on the latest version I built pulling a few cars. It has over an hour of run time on it, and it keeps running better the more I run it. It has good power, good slow, and high speed performance. Note, it does not have the scale bogies installed, as I am waiting for the new ones that Jesse designed.

Hi Siegfried. Thanks for the advice on the 4mm motor out of a servo, I will check them out. I have actually tested lots of 4mm motors in my model airplane designs over the years. The 4mm motor I am using in this model is out of a Pico QX quad. It has the most power out of all of the 4mm motors I have ever tested for model airplane use, and it looks like it works great for TGauge locomotive designs as well.

Joe.

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