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7mm D.C.C. 'O' Gauge - In The Australian Outdoors
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 Posted: Wed Mar 16th, 2016 07:38 pm
   
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Herb Kephart
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I once had a squirrel decide that the loft of the shop building--where the layout then was-- was a great place to live. A whole story in it's self.

Good looking locos Bob! I know that the 41 will have a better service record than what the real one seemed to have.

Herb



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 Posted: Thu Mar 17th, 2016 03:48 am
   
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Robert Comerford
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Fortunately for us Koala's prefer to stay in trees.
I think the 41 says that ugly is the new beautiful Herb :>)

Lots of pork barrelling by politicians saw us with a host of differing small runs of locos. Good for us modellers, but a disaster when it comes to running a railway. They would send out one of our engineers on a fact finding mission around the world to report back on best practice for our use. Having been correctly advised they would promptly ignore it every time.

regards
Bob

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 Posted: Sun Mar 20th, 2016 03:02 am
   
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Robert Comerford
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Old no 72 must have objected to having its photo taken the other day. I don't know how much running it had prior to my purchase a few years ago but yesterday the smoke started rising from the motor as the ammeter reading headed top side of an amp. New motor on order!
The loco came from a stud contact outdoor railway where it was masquerading as a 1/4" scale 18 class. The fact that it was to 1/4" scale suggests the former owner was in his senior years as use of that scale for NSW modelling was only practised by the NSWGR themselves for their promotional model railway layouts and a few individuals up until the 1950's.

Cramming in as much running as I can before my thoughts turn once again to the comforts of an indoor layout have seen some derailments at the join between the access ramp and the main layout baseboards. The access ramp support had lifted enough to create a hump at the join that now was an issue that could not be ignored. Armed with hammer, saw, battery drill and suitable screws it was attacked and hopefully no derailments will happen again for some time. The access ramp was only intended to be short lived as I wanted the indoor storage to be at main baseboard level. This still can't happen until more junk is shifted. The supports are only some pine L girders shoved in the ground so it came as no surprise. Maybe next summer :>)

regards
Bob

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 Posted: Sun Mar 27th, 2016 05:49 am
   
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Robert Comerford
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I finally remembered I had a 59 class waiting my attention!
The last couple of days have been spent assembling the gearbox then getting the gearbox and motor to fit. That was after carefully reaming the siderod holes to get the wheels to turn smoothly.
 I like to get the mech running nicely before attaching the valve gear.
 Here we see the mech running in.



regards
 Bob

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 Posted: Sun Mar 27th, 2016 07:17 am
   
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Herb Kephart
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Bob-

I have run in mechs. for years by using a piece of acrylic (Perspec, Plexiglass etc) with grooves cut in it for the flanges. This puts a slight load on things, but doesn't wear the treads---bumpers at each end. Costs one heck of a site less than those multi roller things, and I think does a better job in less time than having the mech run free.

Herb



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 Posted: Mon Mar 28th, 2016 08:35 am
   
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Robert Comerford
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Herb, the mech is actually being run in with the wheels suspended in the air.
The fancy roller thing was a present for looking after a friend's dogs while they were in Europe over xmas/new year. I normally just oil up a length of track and place a stop in front of the loco.
regards
Bob

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 Posted: Thu Mar 31st, 2016 05:20 am
   
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Robert Comerford
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Putting old number 72 back together wasn't as easy as I thought. For a start it took me some time to realise what I thought were pickup issues and misaligned worm were due to the ESC having been damaged by the previous motor. It ran but with different issues in each direction.

I also put a 2 start worm on to increase the speed and now find I have issues climbing the access ramp.
Decision,decisions? ! (grin)

I did have a bit of luck however. Examining the previous motor revealed a brush so worn as to short out the commutator and so a clean up and fitting of another end bell from a motor that had its windings cut by the mounting screw sees me with another usable motor.

regards
Bob

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 Posted: Fri Apr 1st, 2016 05:18 am
   
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Bob D
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Fine bit of "Sherlocking" there Bob, what clued you in on the problem?

I haven't had any issues with my BPRC electronics yet, been almost a year now since I started converting. I did have a motor with a bent shaft but that's all.

BobD.



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 Posted: Fri Apr 1st, 2016 07:28 am
   
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Robert Comerford
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Hi Bob, after checking all the mechanical and electrical contact areas and realising they were OK, it is just a case of looking at what is left. All that was left was the decoder. It was also obvious the smoke I saw coming out of the loco was from the decoder not the motor as I first thought when I examined the insides of the old motor and didn't find any burnt windings.
The fried decoder was a sound one but I replaced it with a non-sound one. The old decoder is not a total write-off however as the sound part still works OK, so it can be paired with a non-sound one. I'll use it in a loco with more room.

I have decided to go with the speed rather than the torque so will leave the double start worm in place. Only after all this did I realise I could have fitted the bigger motor I use in all other locos (Mashima 1833) with some minor mods rather than replace with the small one and had both the speed and torque required.... Oh well :>)

That's good to hear. Most electronics is reliable these days Bob.

regards
BobC

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 Posted: Sun Apr 3rd, 2016 05:44 am
   
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Robert Comerford
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Nice weather has come back again, so I am doing some more work on the layout.

Some more HV power poles and telephone poles under way.



regards
 Bob

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