Search found 216 matches

by Bob D.
Wed Oct 02, 2019 9:05 am
Forum: Riding Scale Railroading
Topic: 0-6-0 diesel yard switcher
Replies: 11
Views: 849

Re: 0-6-0 diesel yard switcher

Lateral play in the axles. Blind center drivers if the overall wheelbase is large. It is the distance between the outer axle centers that determines the radius limit for the most part.
by Bob D.
Thu Jan 17, 2019 8:09 am
Forum: Riding Scale Railroading
Topic: 8hp vs 16 hp
Replies: 25
Views: 6169

Re: 8hp vs 16 hp

Those motors sure aren't happy with no air filters....
by Bob D.
Fri Jan 11, 2019 11:07 am
Forum: Riding Scale Railroading
Topic: Dimension Engineering controller question
Replies: 34
Views: 7163

Re: Dimension Engineering controller question

Mike,
You have it correct. Stripe on diode is the cathode.
You have a great railroad. Have followed yoour posts about it.

Bob
by Bob D.
Thu Jan 10, 2019 12:12 pm
Forum: Riding Scale Railroading
Topic: Dimension Engineering controller question
Replies: 34
Views: 7163

Re: Dimension Engineering controller question

Thanks for the detailed reply Mike. It clears up questions on the panel operation. Especially why there are ten positions of the throttle. I'm going to use throttle stop as one of the E-stops. Idle will be notch one and nine will be warp drive engagement...... Here's a sideview of my FrankenCritter....
by Bob D.
Wed Jan 09, 2019 11:48 pm
Forum: Riding Scale Railroading
Topic: Dimension Engineering controller question
Replies: 34
Views: 7163

Re: Dimension Engineering controller question

Mike, Question on the operation of the EMD panel. When the throttle is in notch one you can pull it out and go one lower into what I believe is the engine off/shutdown position. If that assumption is correct, is it normal that you have to go back to notch one to be able to remove the reverser lever?...
by Bob D.
Wed Jan 09, 2019 12:01 pm
Forum: Riding Scale Railroading
Topic: Dimension Engineering controller question
Replies: 34
Views: 7163

Re: Dimension Engineering controller question

After conversations with Dimension I have found that the Sabertooth 2x60 does not support analog option 3 like their other controls. This poses some problems for what I want to do, especially the lack of a one direction throttle and the ability to seperately choose forward or reverse. Using an Ardui...
by Bob D.
Wed Jan 02, 2019 9:13 am
Forum: Riding Scale Railroading
Topic: Dimension Engineering controller question
Replies: 34
Views: 7163

Re: Dimension Engineering controller question

Mike,
Looks good and should work as you want. Another thing to consider. If you want to safely freewheel the loco with the controller not powered up you can place a diode across the controller power switch to sink the regen power to the battery to prevent controller damage.
by Bob D.
Mon Dec 31, 2018 11:07 pm
Forum: Riding Scale Railroading
Topic: Dimension Engineering controller question
Replies: 34
Views: 7163

Re: Dimension Engineering controller question

CP, I don't think you can fry one of these miswiring the controller inputs. Hopefully no metal chips floating about from drilling.... Split sec oops on battery polarity is typical poof. Wire hairs crossing lugs.....
Where you running when it died?
by Bob D.
Mon Dec 31, 2018 4:40 pm
Forum: Riding Scale Railroading
Topic: Dimension Engineering controller question
Replies: 34
Views: 7163

Re: Dimension Engineering controller question

You can use the same switch. Wiring may need to be changed. A signal on S1 of 0v corresponds to the motor being fully stopped. 5v corresponds to full power. A second signal is fed to S2. If the signal on S2 is greater than 2.5 volts, the SyRen will drive the motor forward. If the signal on S2 is les...
by Bob D.
Mon Dec 31, 2018 4:11 pm
Forum: Riding Scale Railroading
Topic: Dimension Engineering controller question
Replies: 34
Views: 7163

Re: Dimension Engineering controller question

Mike, Do you have your controller dip switches set for option 3, analog one dir throt, for/rev S2 input? That uses Ov as motor stop. I would think this is fairly good failsafe. There is no mention of this option on my Sabretooth 2x60. I don't know if it is an omission or not supported. Bob
by Bob D.
Mon Dec 31, 2018 12:27 pm
Forum: Riding Scale Railroading
Topic: Dimension Engineering controller question
Replies: 34
Views: 7163

Re: Dimension Engineering controller question

CP4449,
That is not a resistor for the voltmeter. That is a shunt for the ammeter.
Which controller model do you have?
Bob
by Bob D.
Sun Dec 30, 2018 11:23 pm
Forum: Riding Scale Railroading
Topic: Dimension Engineering controller question
Replies: 34
Views: 7163

Re: Dimension Engineering controller question

Do you know why your controller fried? They are very robust but will not tolerate the input voltage being reversed. Doing that is an instant death pop. Using analog control you cannot have a seperate switch to select forward or reverse. Direction and speed is done with a single potentiometer. Using ...