BE2F4285-D839-4C55-8EE9-4A42B0C3BED3

As we’re taking apart the MTH PAs to put in the ERR Cruise & Railsounds Commanders, I’m wondering what to do with the DD Equalizer board, and realized that because I didn’t like the sound of the QSI prime mover, that the P2b doesn’t have a prime mover!

So, our came the box and we’ve already started the 3RS conversion!

First step was to disassemble the pilot truck to get the measurements for the NWSL 36” scale pilot wheels (0.145” treads on 0.088” shouldered axles; 8252-4).

860CE68D-E132-43D2-9406-2ED3EA3A657F

Next was to rip out the electro-coupler and start measurements for the Kadee box. We’ll have to figure out a way to add the tube pilot, as well. 

060018F1-3A2C-43AC-95EA-590D7581BF62B991D2AC-88AC-4A1C-A484-71195595317ADDF9E0D3-1BC8-447C-A0C9-F73CC1D8AE13

stay tuned!

thanks,

Mario

 

Sweat the details!...



 

Attachments

Photos (5)
Original Post

What's not to like about a P-motor?  Overly complex running gear with an overly intriguing look. 

They make me want to freelance a P:48 electrified RR in the Crooked Mountain Lines vein.

Rob M. ARHS # 3846 PRRT&HS # 8141 EPTC "Life Is Like A Mountain Railway, With An Engineer That's Brave..."

Send it to Joe Foehrkolb along with a sample of the flange you want, or get MTH to send you additional flanged drivers.

How do you get .145 wheels to stay on 3-rail track?  My railroad won't put up with less than about .155".

bob2 posted:

Send it to Joe Foehrkolb along with a sample of the flange you want, or get MTH to send you additional flanged drivers.

How do you get .145 wheels to stay on 3-rail track?  My railroad won't put up with less than about .155".

Ummm. I don’t know?

This is my first NWSL conversion. 

.

.

.

.

ok. I’m officially nervous. 

Sweat the details!...



 

Regarding .145 flange.

 So long as the track is a true T rail there will be no problem. Oh, and make sure the wheels are gauged correctly. I use an NMRA gauge for O scale.

falconservice posted:

 

Did you replace the MTH Proto-Couplers with scale sized remote controlled couplers?

Andrew

Hi, Andrew!

I’m not a fan of remote couplers, so I ripped out all the wiring and the little board in the pilot truck. 

Since this unit will run alone, I’ll be putting a Protocraft Scale coupler on the lead end and a Kadee 740 on the trailing. 

We’re a long way from that, since I haven’t designed a coupler box mount yet...

thanks!

-Mario

Sweat the details!...



 

Ron H posted:

Regarding .145 flange.

 So long as the track is a true T rail there will be no problem. Oh, and make sure the wheels are gauged correctly. I use an NMRA gauge for O scale.

We use GarGraves at the club, and I’m pretty sure one member runs 2-rail rolling stock successful. 

We shall see. 

 

Sweat the details!...



 

This locomotive project may actually have some traction, I found a UCUB board to put in it.

So, I finally got around to adding the 2R wheels on the pilot trucks. We’ll try them at the club this week. 

6F4A8944-E5C1-4733-A521-DAC860B71937

Sweat the details!...



 

Attachments

Photos (1)

You absolutely won't want realistic sound for a P motor.  It was a high pitched fan sound, even worse that an NH EP-5.  I once rode one from GCT to Harmon and my ears were ringing when I got of.   I always wondered why the BofLE didn't vigorously protest the deafening noise.

Last edited by Rich Melvin

That’s good to know! There aren’t a lot of sounds, mostly just a background whine.  But, the steam whistle and bell are nice. I powered it up for the first time yesterday and I’ll see if I can get a quick video. Like the PA, I’ll probably wire the motors in series, if they’re not already. 

thanks!

-Mario

Sweat the details!...



 

Last edited by Rich Melvin

I had to swap the decks of the trucks, as the longer motor leads were on the rear truck and I needed them to run to the back of the cab where they plug into the UCUB, and while doing so, I noticed that MTH got the front and rear sides backwards. If you notice in the pictures of the P2b, the deck with the box has a “2” on the cab side, and the deck with the brake wheel has the “F”.  To remember this, I say to myself, the steering wheel goes in front!

E2ACE8CC-8473-4EDC-9EF0-E8E109FFE2E8

D31DF472-74E7-45AD-A181-B74AF5623643

6F7C18FA-004E-46B8-9F9D-484692BB162B

Sweat the details!...



 

Attachments

Photos (4)

The coupler mounts are designed too, here’s a mock up. 

46585A45-ED5B-4702-9BF4-C6909E76C2A8F576CC38-F3EA-45B0-BCCD-60B929FE6EC731617550-D3D6-497D-815C-DEB853F3618C

the buffer inserts into the pilot piece, so the buffer can be made of plastic while the actual coupler mount can be printed in metal. Printing test pieces currently. 

thanks,

-Mario

Sweat the details!...



 

Attachments

Photos (3)

Well. They look good but the buffer placement didn’t quite turn out like I planned. Uggh. 

B318A0B5-AE56-4EC4-A9C2-5BC0651A3B10CCA443CA-1915-4503-8939-652996EFC88FAE86777D-E016-4B2D-88DA-DE2812225DAD

The buffer doesn’t sit high enough above the coupler and they rub. So, my choices are to either redesign the buffer or drill the flat spot above the coupler mount. 

hmmm...

Sweat the details!...



 

Attachments

Photos (3)

Add Reply

Post
OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
330-757-3020

www.ogaugerr.com
×
×
×
×
Link copied to your clipboard.
×
×