Usa Trains sd70mac revolution install Help please

[paul delany]

Hi folks anyone here ever fitted a revolution receiver into a sd70mac ,I am not sure how to wire the lighting section ..

Any help appreciated folks.

 

[PhilP]

One way to do this :

Disconnect the smoke unit from the original board.

Use a DPDT relay.
Feed this with your battery supply, and arrange it as a reversing switch.
Wire the normally closed path, into the original board, so that you have forward - running lights.
Use the reverse-light feed from the Revolution to switch the relay. - This swaps the polarity of the power to the original board, so changing the directional lighting.

PhilP

 

[Tony Walsham]

Hello Phil.
That is exactly how I recommend all USAT locos.

Don't forget the snubbing diode across the relay coil.

 

[paul delany]

One way to do this :

Disconnect the smoke unit from the original board.

Use a DPDT relay.
Feed this with your battery supply, and arrange it as a reversing switch.
Wire the normally closed path, into the original board, so that you have forward - running lights.
Use the reverse-light feed from the Revolution to switch the relay. - This swaps the polarity of the power to the original board, so changing the directional lighting.

PhilP

Hi Philip can you expand a bit on your advice for me please

Paul d

 

[PhilP]

Hi Philip can you expand a bit on your advice for me please

Paul d

I'll draw up a diagram..

 

[paul delany]

I'll draw up a diagram..

Brilliant thankyou,by the way do you know anyone selling revo receivers please

 

[PhilP]

Brilliant thankyou,by the way do you know anyone selling revo receivers please

Which ones?
I assume the older 'new' 2.4Ghz ones?

There are also very old one's, and (I think) a really new version..

 

[paul delany]

Which ones?
I assume the older 'new' 2.4Ghz ones?

There are also very old one's, and (I think) a really new version..

Yes the 2.4 ghz receivers preferably with steam sound

 

[PhilP]

Yes the 2.4 ghz receivers preferably with steam sound

GRS might still have some?

Matthew bought - up all he could get..

PhilP

 

[paul delany]

GRS might still have some?

Matthew bought - up all he could get..

PhilP

Grsuk dosent think he has any unfortunately

 

[paul delany]

Grsuk dosent think he has any unfortunately

Hi Philip I got on to grsuk,uk ,he had to get back to me.Did you manage to.get time to draw me a diagram by any chance

 

[Greg Elmassian]

I did not understand the suggestion at first, but this gives you constant, full brightness lighting that reverses direction, clearly the motors need to be disconnected from the main board and powered not from the relay but the Revolution.

The outputs of the revolution are not high current, nor protected, so please heed Tony's recommendation of the snubber diode across the relay coil.

Greg

 

[The Shed]

I'll draw up a diagram..

P paul delany , did this materialise? and if so, were you able to solve the lighting issue?

 

[paul delany]

P paul delany , did this materialise? and if so, were you able to solve the lighting issue?

Hi hello there no not yet unfortunately

 

[paul delany]

Hello Phil.
That is exactly how I recommend all USAT locos.

Don't forget the snubbing diode across the relay coil.

Hi tony I'm wanting to fit a revolution sound decoder into my k-27 ,greg mentioned you used to make an optoisolatir board the interface between a sierra sound pcb and the motor control voltage in order make the sierra pcb detect change in speed etc ?do you still have the parts to make one please.

 

[Greg Elmassian]

This is the basic schematic of the Sierra isolator board, Tony Walsham may be able to comment if this solves the "full speed" issue, or the optos were needed for another issue. Notice there are some redundant circuits, don't ask me why, the manual is about 17 pages long. This was sold as a kit, or just the board, I'm not sure.