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Search: Posts Made By: servoguy
Forum: O Scale 06-24-2017, 05:42 PM
Replies: 134
Views: 35,292
Posted By servoguy
dindallas, if you watch the moving contact as you...

dindallas, if you watch the moving contact as you operate the switch manually, you will usually see it rides up on the insulator and breaks contact with the stationary contact long before the switch...
Forum: O Scale 06-24-2017, 05:38 PM
Replies: 134
Views: 35,292
Posted By servoguy
i was using gmail and the gmail wizards cancelled...

i was using gmail and the gmail wizards cancelled my account with no reason given. i tried to get in touch with someone at MTF to have them change my email address and keep my old address, but I...
Forum: O Scale 06-17-2017, 11:33 PM
Replies: 134
Views: 35,292
Posted By servoguy
There is something else i do to the sliding...

There is something else i do to the sliding switch. I use a Dremmel tool with a 1/8" cutter and remove a small amount of the insulation at the ends of the stationary contacts so that the moving...
Forum: O Scale 06-17-2017, 09:39 PM
Replies: 134
Views: 35,292
Posted By servoguy
About box 22, The resistance between the...

About box 22,

The resistance between the two outside rails should be less than 0.1 ohms. The resistance between the three center rails should be <0.1 ohms.

Bruce Baker
Forum: O Scale 08-21-2016, 11:11 AM
Replies: 3
Views: 558
Posted By servoguy
The metal Marx switches do not have a problem the...

The metal Marx switches do not have a problem the "fat wheels." The plastic Marx switches have a spring loaded piece as part of the frog to allow fat wheels to go through the frog. I don't know how...
Forum: O Scale 07-20-2016, 03:47 AM
Replies: 3
Views: 746
Posted By servoguy
I put a diode in series with the lamps in the...

I put a diode in series with the lamps in the controllers and that reduces the power enough that the lamps don't burn. You can touch them while they are lit and not burn your fingers. I also put a...
Forum: O Scale 06-15-2016, 10:49 AM
Replies: 12
Views: 1,120
Posted By servoguy
Ron the Pirate You need to tell us which Marx...

Ron the Pirate
You need to tell us which Marx swsitches you are using. The metal switches have a contact that puts center rail voltage onto one of the movable rails.
Forum: O Scale 06-15-2016, 12:30 AM
Replies: 12
Views: 1,120
Posted By servoguy
What engine are you running? And how far apart...

What engine are you running? And how far apart are the pickups? It should be obvious that the pickups are not contacting the center rail properly. Some small engines with the pickups close...
Forum: O Scale 06-14-2016, 04:35 PM
Replies: 12
Views: 1,120
Posted By servoguy
Does the train lose power when it is going...

Does the train lose power when it is going straight or just on the curved path?
Forum: O Scale 06-14-2016, 04:35 PM
Replies: 12
Views: 1,120
Posted By servoguy
What do you mean, "The train loses power." Do...

What do you mean, "The train loses power." Do the pickups fail to provide power to the loco and the E unit goes into neutral, or does the loco just slow down?
Forum: O Scale 06-14-2016, 01:40 AM
Replies: 12
Views: 1,120
Posted By servoguy
Tell me what model of switches you have: 022,...

Tell me what model of switches you have: 022, 711, 721, 042, 1121, 1122, Fastrack, etc.

I have written a long thread about restoring 022 & 711 switches. I have written a short thread about...
Forum: O Scale 06-13-2016, 04:24 PM
Replies: 12
Views: 1,001
Posted By servoguy
Your post war stuff should run through the 711...

Your post war stuff should run through the 711 switches without a problem. I have done that many times using a 2023 diesel or a 2353 diesel and a 736 steamer.
Forum: O Scale 06-13-2016, 01:35 AM
Replies: 12
Views: 1,120
Posted By servoguy
Connect U to the outside rail. Connect A to the...

Connect U to the outside rail. Connect A to the center rail. Connect B to the fixed voltage plug.
Forum: O Scale 06-13-2016, 01:30 AM
Replies: 12
Views: 1,001
Posted By servoguy
I think you should consider getting some 711...

I think you should consider getting some 711 switches and replacing the Fastrack switches. I have a number of 711 and 721 switches and they work well with post war rolling stock and since they are...
Forum: O Scale 05-29-2016, 08:36 PM
Replies: 4
Views: 883
Posted By servoguy
Martin, Check my long post on restoring 022...

Martin,
Check my long post on restoring 022 switches. I think it is in the Information sticky on this forum. If you have trouble finding it, use Google to search for

022/711 switch operating...
Forum: O Scale 05-09-2016, 05:30 PM
Replies: 46
Views: 3,579
Posted By servoguy
I wrote a post a few years ago on restoring 1122...

I wrote a post a few years ago on restoring 1122 switches. It is on this forum. You would be well advised to look it up and do what the post says to do. I have restored a number of 1122 switches,...
Forum: O Scale 05-03-2016, 08:43 PM
Replies: 453
Views: 31,111
Posted By servoguy
I have fixed many a section of tube track by...

I have fixed many a section of tube track by bending up the tabs and doing whatever was necessary. I have made sections into insulated sections by removing one of the outside rails and insulating it...
Forum: O Scale 05-02-2016, 10:27 PM
Replies: 13
Views: 1,317
Posted By servoguy
I recommend 5W-20 motor oil for everything. Make...

I recommend 5W-20 motor oil for everything. Make sure you oil all the bearings: axle bearings and the bearings for the shaft with the worm gears. Oil the idler gear that is driven by the motor and...
Forum: O Scale 03-22-2016, 12:30 PM
Replies: 38
Views: 2,387
Posted By servoguy
You can install the TVSs in either direction. ...

You can install the TVSs in either direction.

If you install a 5 amp breaker in place of the internal 15 amp breaker, you will limit the output current to 5 amps total. Add up the current on A,...
Forum: O Scale 03-21-2016, 08:59 PM
Replies: 38
Views: 2,387
Posted By servoguy
This isn't quite correct. The circuit breakers...

This isn't quite correct. The circuit breakers will protect the wiring if they are sized correctly for the wire gauge. However, the circuit breakers will not protect electronics from voltage...
Forum: O Scale 03-21-2016, 12:51 PM
Replies: 38
Views: 2,387
Posted By servoguy
For 14 gauge wire, the maximum current rating of...

For 14 gauge wire, the maximum current rating of the breaker is 15 amps. For 12 gauge wire, the maximum current rating of the breaker is 20 amps. For 16 gauge wire, the maximum current rating of...
Forum: O Scale 03-20-2016, 09:36 PM
Replies: 38
Views: 2,387
Posted By servoguy
If you exceed the amperage rating of a wire, it...

If you exceed the amperage rating of a wire, it can get very hot and potentially catch anything close to it on fire. The circuit breaker is designed to limit the current output of the transformer...
Forum: O Scale 03-20-2016, 12:31 AM
Replies: 38
Views: 2,387
Posted By servoguy
The voltage out of all of the posts are variable....

The voltage out of all of the posts are variable. A ZW does not have any fixed output voltages. Terminals A, B, C, & D are all variable between 6 volts and 20 volts.

There is a single circuit...
Forum: O Scale 03-19-2016, 03:39 PM
Replies: 38
Views: 2,387
Posted By servoguy
Unplug the ZW and remove the 4 screws that hold...

Unplug the ZW and remove the 4 screws that hold the cover and take the cover off. Don't plug the ZW back in until the cover has been replaced.

Move the controls and verify that the carbon rollers...
Forum: O Scale 03-11-2016, 01:57 PM
Replies: 16
Views: 1,402
Posted By servoguy
Did you check the gauging of the wheels. If the...

Did you check the gauging of the wheels. If the wheels are too far apart, they will climb the rails.
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