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 Posted: Tue Jul 30th, 2019 04:15 pm
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James Field
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Hi all,

Quick question on conversion of a DC 0n30 Shay to RC.

In dismantling the Shay, there is a circuit board that feeds the motor from the wheel pickups and the front light.
If I remove this board I can get all my DT receiver, Li-Po battery and charger circuit hidden in the bunker.

Will removing this board be detrimental to the running of the loco,
or should I leave it and just connect the pickup leads to the receiver and battery?

James


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 Posted: Fri Aug 2nd, 2019 11:30 pm
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W C Greene
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Howdy James...

As I remember, there are a couple of cast board "mounts" in the bunker for the stock board,
and they would need to be ground/cut off to give room for the new electronics.
Isolate the headlight wires from the board and cut them from the board,
you can use them on the new board.
Will removing this board be detrimental to the running of the loco?
By removing the stock board and installing r/c,
you will find that the stock pickup system is detrimental to great operation.
You may do what I did to all the stock boards and toss them in the circular file.

Good luck and have a great time with your new r/c Shay.

Woodie




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 Posted: Thu Aug 6th, 2020 04:48 pm
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Michael M
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Since MRC is no longer making their Loco Genie Diesel,
I've been looking around the web for a possible replacement system.

I came across this receiver with a built-in ESC:

https://www.minimumrc.com/products/micro-4ch-receiver-with-build-in-5a-brushed-esc

Looks pretty compact. 
I emailed the company to see if they could provide dimensions.




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 Posted: Thu Aug 6th, 2020 06:57 pm
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Wes Stewart
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Interesting product,

anxious to hear how it may be set up to handle 14.6V 2600mA.

Keep us informed of your findings.

WES


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 Posted: Thu Aug 6th, 2020 08:45 pm
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Bob R
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Judging by the type connector and battery in the pictures,
I would suggest the size is just under 3/4" by 1". 

A more important question is its voltage range capability. 
Picture shows a single cell Li-Po. 

Appears to be for micro RC airplanes which operate on single cells. 
It would need to handle higher voltage than that for our use. 

Also many micro airplane RCVR/ESCs do not have reverseable motor current. 




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 Posted: Thu Aug 6th, 2020 09:54 pm
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Michael M
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Thanks, Bob

Didn't know about the reverse feature. 
And, wasn't paying attention to the voltage input.

Doing more searching I have found others that take a higher voltage.
 
Spektrum has one that goes up to 8.4 volts. 
Not sure about reverse.

Have to do more looking.




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 Posted: Thu Aug 6th, 2020 10:12 pm
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bobquincy
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For the higher voltage/higher current,
we may have to add a motor driver like the ones Pololu makes,
controlling the PWM with the receiver output,
and direction with one of the other radio channels.

I have done this to boost the power of a small receiver,
it works but sure adds another layer or two of complexity.




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 Posted: Fri Aug 7th, 2020 05:45 am
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Michael M
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Now we're getting complicated. 

And, electricity has never been my best friend
(can't tell you how many times I've zapped myself as a telephone installer).

This is why I liked the Loco Genie so much. 
Compact and pretty easy to install. 

Especially when I could find them on sale for $35-40.




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Michael
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https://www.flickr.com/photos/183715370@N03/albums/72157710477887657/
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 Posted: Fri Aug 7th, 2020 03:11 pm
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Michael M
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I am finding out that these micro receivers Do Not have a reverse feature. 

At least not the ones I have looked at so far.




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 Posted: Sun Aug 9th, 2020 03:00 pm
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Michael M
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Found this receiver which is a replacement for RC cars:

https://www.banggood.com/HS-183011830218311-118-2_4G-4WD-Rc-Car-Parts-30A-ReceiverESC-Integrated-Electronic-Board-p-1340556.html?currency=USD&utm_source=bing_pa&utm_medium=cpc_bgs&utm_content=haosen&utm_campaign=haosen-new-pa-us-toys-rcparts-pc-0611&ad_id=&msclkid=02f42f4a984216c0b643707a99bf1be4&cur_warehouse=CN

Operates off 7.4 volts and weighs 14 grams. 

Haven't found any info on the dimensions,
but looking at the photos it could work.


Also found a transmitter: 

https://www.banggood.com/HS-18301-or-18302-or-18311-or-18312-1-or-18-2_4G-4WD-Rc-Car-Parts-2_4G-4CH-Transmitter-Remote-Controller-18301-45-p-1437768.html?currency=USD&utm_source=bing_pa&utm_medium=cpc_bgs&utm_content=zouzou&utm_campaign=pa-us-toys-rcparts-pc&cur_warehouse=CN

At these prices it might be worth giving it a try.




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Michael
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Nye, Inyo & Esmeralda Railroad

https://www.flickr.com/photos/183715370@N03/albums/72157710477887657/
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