LIONEL modern electronic E-Unit questions.

Dallee makes a good selection of electronic E units.  Just buy the correct size.  I put two in my Flyer engines, simple install... Would also suggest getting their lock out switch...

Marty

While you can spring for the Dallee units, you can find a lot of perfectly serviceable electronic reverse boards that folks have taken out for upgrades, and you'll save a ton of money over the price from Dallee for the same functionality.  I'm assuming from the picture of the E-Unit you posted, this is an engine with DC motors?  For AC motors, you need a different unit.

That is a QSI ACRU (AC current Reverse Unit.) If it is still functioning it will work fine for a postwar diesel.

Orange to the pick-up (s). Brown to ground chassis.  Green to the field lug on the brushplate. Blue and yellow to the brushes, order doesn't matter. If engine starts in reverse, reverse the blue / yellow wires. If you want to add a lock out on/off switch, you will need to remove the jumper wire on the bottom socket and insert tinned wires to the slide switch. I don't remember what pair of the three jumpered pair it is now, but a quick experiment will tell you which.

Thanks Chuck. I tried to wire up the ACRU to the engine according to your instruction. I get neutral and forward, but not reverse. When I swap the blue and yellow wire on the brushes, the engine will go in the opposite direction, but not the other. I'm guessing the reason someone gave me this for free is because it only works in one direction. Thanks for your advice. If I get another ACRU, I'll know how to install it. In the meantime, I'm going to rebuild the original post war e-unit.

what I don't like about dallee, E unit,  is  that  they have a voltage limiter to motor,  so you don't get full voltage,  your locked at a certain speed. I am going to put a relay in so I can by pass E unit,  I mainly run forward anyway

Dontano posted:

Thanks Chuck. I tried to wire up the ACRU to the engine according to your instruction. I get neutral and forward, but not reverse. When I swap the blue and yellow wire on the brushes, the engine will go in the opposite direction, but not the other. I'm guessing the reason someone gave me this for free is because it only works in one direction. Thanks for your advice. If I get another ACRU, I'll know how to install it. In the meantime, I'm going to rebuild the original post war e-unit.

It is fixable.  Sounds like the transistor is not energizing the one relay.   G

Hi G.

How do you fix the non-energizing transistor? Thanks.

Pretty sure George is thinking replacement.

Shoot me an email with your address. I have one that i took out of service that i will never use again. I'll. Send it to you.

Romiller 

Hi ROMILLER49,

That is very generous of you. My address is:

Don Celentano

124 E. South Street

Groton NY 13073

Thank you very much!

I believe it is a 5087 and used to energize the relay when logic activates it.  Long time since I worked on an AC Version.  G

Im putting it in the mail today for Don. Hopefully we'll know by Friday if it's correct.

Romiller 

Hi Rod. The ACRU e-unit you sent arrived today. It works perfectly. Thank you so much for your generosity. 

Great. You've made my day. Pretty good service from US mail.

Regards

Rod Miller 

Don want to send me the bad one, I can see if it is repairable,  G

Sure. That's a nice offer. Where do I send it?