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Jeff's (SRman) work bench and projects - On Members Workbenches. - More Practical Help - Your Model Railway Club
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 Posted: Sat Jan 19th, 2013 07:14 am
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SRman
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More on the 2 HAL: I have now started painting the interiors. I know they started with a reddish-brown for second class (ex-third class) but I have no idea what colour the first class seats should be. I chose a French blue on the strength of Hornby using blue for their Maunsell coaches but this is a tenuous guess at best! I will also paint the antimacassars white or cream for first class only.

The roofs were still in undercoat before and have now had a coat of a darker grey.

The interior shots also show how I have run the wires for the extra pickups rigged in the trailing bogie, plus the lead weight over the leading end (hidden in the van section) and the NCE decoder.










I have left the extra wires at full length on the decoder because I may fit lights at a later date, and possibly a third rail flash over the leading bogie shoe.



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 Posted: Sat Jan 19th, 2013 09:13 am
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Petermac
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How easy was it to get the bodies off those Jeff ?

I have a couple of Bachmann DMU's to chip but I understand removing the bodies is quite tricky.  Also, I'd really like to have a sound chip in at least one of them.  The problem is, they're quite heavy so postage (to my "sound engineer" in Blackwood ;-)) would be significant.

I certainly don't have the skill to install a sound chip myself ................:cry::cry:



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 Posted: Sat Jan 19th, 2013 09:43 am
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SRman
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On these kits I haven't fastened the bodies on yet, so they are a simple loose fit, held at the cab ends by the buffer shanks protruding in behind the buffer beam. I may lose this feature if I decide to fit white metal buffers to replace the cast on resin ones.

The Bachmann DMUs are all DCC-ready. The bodies come off on the Derby 108 by undoing a screw, off-centre under the cab end and lifting and unclipping along the sides. The Cravens class 105 is even simpler as it doesn't have the screw (although the side clips are quite stiff). The decoder is 8-pin and simply plugs in (don't worry if you get it backwards as this will merely stop the lights from working (in which case you reverse the decoder plug).

The ESU decoders are too big to fit in the recess on top of the motor block so I put mine on the leading face of the block, inside the passenger saloon. I also removed the seats from the passenger bay ahead of the motor and fitted a larger bass reflex speaker which really brings out the lovely exhaust resonance on the Howes sound chip.

The first two pics show the position of the screw on the 108.





The sides then need to be spread slightly to release the clips.

This photo shows the position of the plug and socket, behind the motor casing, and how I have positioned the decoder, removed seats and placed the large speaker.



Just getting the decoder and speaker and doing it yourself will save you a lot of postage, Peter! If you stick with the smaller speaker it will fit on the seat backs, or you could remove a small section within the seat unit to seat the decoder further down.

I haven't got any of the Derby Lightweight units (early style) but the mechanisms are all but identical to the 108 and 105 units.

[Post edited with a few pics added.]



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 Posted: Sat Jan 19th, 2013 02:01 pm
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Petermac
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Thanks for that Jeff.  Maybe not as difficult to get the bodies off as I've read.  I think there's a troublesome brass contact strip for the lights just behind the cab :roll: - I hear it can be a bit of a PITA.

Also, I thought these DMU's needed either 2 decoders or a connection from the motor unit to the trailer car.  Somewhere on here, someone used a rather neat looking mini-plug/socket for the connection.........:roll::roll:

Do you buy these Howes chips ready loaded with all the sounds just to plug in ?



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 Posted: Sat Jan 19th, 2013 04:54 pm
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Petermac wrote: Also, I thought these DMU's needed either 2 decoders or a connection from the motor unit to the trailer car.  Somewhere on here, someone used a rather neat looking mini-plug/socket for the connection.........:roll::roll:

Was it this by any chance:-




Perhaps we should try to arrange a "chipping" day here in the UK? With some combined expertise and experience, we ought to be able to do a number of decoders in a few hours. Maybe next time you come over, Peter.

(Sorry Jeff, I will let you have your thread back now)

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 Posted: Sat Jan 19th, 2013 09:47 pm
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That's the one Geoff. :thumbs

Your offer of a "chipping day" could be one you'll live to regret having made .................:hmm:hmm  I'm planning a "UK run" in early February................



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 Posted: Sun Jan 20th, 2013 12:33 am
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SRman
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Geoff R wrote: Petermac wrote: Also, I thought these DMU's needed either 2 decoders or a connection from the motor unit to the trailer car.  Somewhere on here, someone used a rather neat looking mini-plug/socket for the connection.........:roll::roll:

Was it this by any chance:-


Perhaps we should try to arrange a "chipping" day here in the UK? With some combined expertise and experience, we ought to be able to do a number of decoders in a few hours. Maybe next time you come over, Peter.

(Sorry Jeff, I will let you have your thread back now)

Answering Peter first: Yes they require two decoders (three if it is a three-car unit). Older releases require an 8-pin decoder in the trailer(s), newer releases require a 6-pin decoder. As they are purely for the lighting functions you can use a function only decoder or, as I do, discarded cheap Hornby decoders, which are cheaper than function-only decoders! Or, as you say, you can use a mini-connector to transfer power to the trailer lights - you would need at least a three-pin connection for this.

Geoff: this is a workbench thread so every bit of information that helps someone else (or me, for that matter!) is more than welcome.
Besides, you should read my tag line with reference to thread hijacking!  ;-)  :cool:



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 Posted: Sun Jan 20th, 2013 02:06 pm
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Petermac wrote: That's the one Geoff. :thumbs

Your offer of a "chipping day" could be one you'll live to regret having made .................:hmm:hmm  I'm planning a "UK run" in early February................

You know you are welcome any time, Peter. When you have a firm date, send me a PM and we can take it from there. I can easily set us up to fit a few standard decoders and preloaded sound decoders, but I don't have the gear that Max has for loading custom sound projects - although I do know a man who has and who is not too far from here. He may be willing to help as well.

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 Posted: Tue Jan 22nd, 2013 06:44 am
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I spent a short time this afternoon gluing the steps, toolbox and cab roof vent on the G16, followed by filing the rear body mounting to make it sit more levelly. The Christmas bag in the photos was to hide the glare from the TV as I decided to take the photos in the sitting room next to a window.

Still to add before painting are the lamp irons from flattened brass wire, remembering that these Southern locomotives had six lamp irons at each end, lubricator pipe runs, and the clack valves and feed pipes near the front of the boiler.

To be added after painting are buffers, safety valves and whistle, plus the cab door hand rails (to be made from modified Peco track pins, as per the kit instructions).








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 Posted: Tue Jan 22nd, 2013 06:52 am
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It's a handsome fellow, Jeff.   :thumbs

It is still running OK with all the bits and bobs now in place?



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 Posted: Tue Jan 22nd, 2013 07:04 am
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It runs fine on the larger radius curves but I need to increase the side play on the bogie just a little more for the inner radius. Otherwise, I'm quite pleased with the way it is progressing.

There is room for some extra weight to be added although it coped with its first heavy train the other day.



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 Posted: Tue Jan 22nd, 2013 08:46 am
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Petermac
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Whilst "handsome" is hardly the word I'd have used Max, that TV "fill-in flash" has given it a nice metalic paint finish Jeff. ;-)

She looks like quite a beastie.  I need to read a bit about the prototype I think to see what she was really like in terms of performance.



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 Posted: Tue Jan 22nd, 2013 08:57 am
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SRman
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They were rather rugged looking machines - I'm not too sure about 'handsome' Max! However, beauty is in the eye of the beholder and I do think they are beautiful locomotives in the aforementioned 'rugged' way.  :lol: :cool:

There were only four of them, then the very similar H16 4-6-2Ts were built (all five of them! The H16s had straight tops at a lower level on their side tanks). All were based for most of their lives at Feltham.

The G16s were used for hump shunting at Feltham but also on transfer freights and empty passenger stock movements, often to Clapham Junction, so are ideal for model railway movements. The H16s were used similarly but got a little further afield, to Willesden on the transfer freights.

The G16s were reputed to be the most powerful tank engines in the UK.

Since my last post, I have taken the front bogie off and filled a little more side clearance for the mounting screw and cut off the cross extensions on the ex-EFE metal spring so it it is now essentially a strip of springy steel with two holes n it.



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 Posted: Wed Jan 23rd, 2013 07:14 am
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Since most of the remaining painting required will be by brush, I decided it was time to add the buffers, after first painting the buffer beams and shanks red. There was a minor disaster when I dropped one of the sprung buffers and it fell apart on the floor. I fished around with a torch for extra illumination for a while and eventually reunited the buffer head, shank, spring and tiny retaining screw! I do have to check to see if that rear buffer beam should be red for its entire depth or only for the bit up to a level with the tops of the buffer shanks. One buffer seems to have drooped slightly so I'll have to reseat it before I'm done.

There is still a bit of filling and filing/sanding to do but overall the painting can proceed apace. I even started a little of the weathering finish, with dark grey (Humbrol #67) darkened with a little black painted on to the cab roof, smokebox and footplate.

Oh yes ... and I have filed down the outer sides of those 8F cylinders a bit.








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 Posted: Mon Jan 28th, 2013 08:29 am
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A quick diversion from G16s and 2 HALs: I decided to experiment with one of my Hornby 4 VEPs to 'fix' the problem of the first class compartments not having windows (or doors!) into the corridor (a slight oversight by Hornby!).

I rummaged through some spare seating units I had lying around until I found a composite unit with four first class compartments. I lifted the Hornby body off one of the Driving Trailer Composite coaches (DTC) - they simply clip off - and checked the compartment spacing against the potential replacement. They matched to within half a millimetre; I figured that I would easily lose that much in the saw cuts when cutting the existing seat unit. I also noted that I would have to remove about 2mm from each side of  the new unit to match the width.

Anyway, several saw cuts later plus a bit of cleaning up with a heavy file, I was able to shoehorn the new section in and test fit the body for clearances. It worked well after removing a little from the top edges to fit under the Hornby lighting unit. The only thing wrong was that the lights shone right through the unpainted plastic of the new bit!

A coat of paint soon fixed that last problem. I haven't even bothered to fill the slight gaps in the seat backs where the saw cuts went through, as the 4 VEP curtains hide those quite well.

Here are a couple of photos to show the end result. Now I only have to do this with three more DTCs!





Next time I do one I'll take a photo of the interior before clipping the bodies back on. That will also show how I avoided the wiring attached at the end of the seat unit, outside what should be the toilet.



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 Posted: Fri Feb 1st, 2013 09:03 am
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Another diversion from layout building and work on the G16 and 2 HAL. I looked at my Lima class 31, 31 327 in Railfreight grey and thought I would like to do something useful with it, as the 30/31 was a particularly good model from the Lima stable. Some years ag I fitted separate handrails to the front of my blue 31 004 and repainted the yellow ends completely. 31 327 had been languishing in a drawer because it had never had the side handrails which were supposed to be supplied in the box but weren't.

I decided to shave off the moulded on handrails at the front and drill the holes (#76 drill bit) before losing track of the correct positions for the handrail ends. Bending the handrails involved a small amount of trial and error. followed by gluing with superglue (cyano-acrylate). The door handrails were just as fiddly to get right, especially the ones with the bend at the top on the edges closest to the ends.

I partially repainted the yellow using slightly thinned Humbrol gloss yellow (#69). This should not have matched fully but blended with the slight weathering I had applied at some time previously and barely shows at all.

Flushed with that success, I decided to try it on analogue DC and it ran very sweetly, even without cleaning the wheels (I'm not a huge fan of Lima's running qualities but occasionally one could get a 'winner' that ran really well - both of my class 31s are in this category). I decided to try out a DCC conversion, using an old, sidelined Digitrax DH123 decoder, which has the advantages of 1. being expendable and 2. possessing a 9-pin JST connection from the wiring harness into the decoder, allowing me to replace it in the future with a better decoder. I was pleasantly surprised with the quality of the running, even with this non-BEMF decoder, particularly in light of my previous poor experiences with Lima mechanisms on DCC, so much so that I will convert 31 004 as well in the near future.

Now all it needs is a little more judicious weathering and some etched nameplates and I'll be very happy with the result.





Addendum to the 4 VEP in the previous post: I swapped out the Hornby Sapphire decoder and replaced it with an ESU LokPilot v3.0 (rendered spare when I fitted a Zimo sound decoder with Paul Chetter's muti-drive to a class 33, D6585). The ESU decoder has vastly reduced the chatter and growl from the VEP mechanism, although it hums a little right through the speed range. I am still looking for another seat unit with first class spacing. Just had an idea though: I may be able to use one of the old Peco card interiors intended for Kitmaster coaches - I stocked up on a whole heap of these things years ago when a local shop was cearing them out at $AUS0.50 each (approx 35 UK pence).




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 Posted: Sat Feb 2nd, 2013 01:09 am
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Encouraged by how smoothly the DCC conversion of 31 327 went, I decided to do 31 004. This one also ran very smoothly on DC so I thought it would go just as well as 31 327. WRONG!!

The actual hard-wiring went more smoothly because I knew exactly what I was doing this time. I pulled the Digitrax decoder out of 31 327 and plugged it in to 31 004. It ran like a dog! It stuttered and stopped and refused to complete even one circuit without stalling. I thoroughly cleaned the wheels, oiled the mech, cleaned the wheels again, making sure I got the backs as well, checked the pickups and tried again. It was better but not brilliant, so I tried a Gaugemaster decoder (demonstrating the wisdom of using the JST-compatible decoders!) with BEMF but that was no better (probably slightly worse), so I put the old Digitrax one back in. The Gaugemaster decoder worked a treat in 31 327 though.

After much persuasion (both physical and verbal!), 31 004 has been trundling around the layout for an hour and a half now. Hopefully this will free it up somewhat.

I took a few photos of the hard-wiring process this time so you can see what s involved.







Incidentally, I removed that capacitor between the brushes on both models after the photos were taken.

And here is 31 004 in service. I detailed it with the separate handrails on the fronts some years ago. 31 327 was easier in some ways because it only had two handrails at each end whereas 31 004 has four, albeit they are all straight ones. It now just needs the red circle coupling codes added above each buffer (these early 31s had electro-magnetic control), some pipework on the buffer beam at the end without a coupling, and a lot more weathering added.








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 Posted: Sun Apr 28th, 2013 01:36 am
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My Dapol/Kernow class 22 has just suffered a minor disaster. Its train of parcels stock became detached and the loco ran around the circuit and into the back of the last coach, derailing its leading axle as it did so. It kept going until it got to a point where it shorted out across the leading axle. My circuit-breaker didn't trip so the axle took the load and got very, very hot. The plastic centre of the axle, including the gear, melted. The bogie baseplate and main bogie chassis/frame also partially melted around the axle.




Fortunately for me, the remaining three axles still have drive, the motor and circuitry are all fine and the ESU LokSOund decoder still works perfectly.

I have contacted Dapol's representative on RMweb (DapolDave) to see about getting the necessary replacement parts, emphasising that this is definitely NOT a warranty claim.

Hopefully I can restore it to full health soon. If all else fails, I can redeem some of it with plasticard and a 'dummy' wheel set (no gear) as the locomotive will actually still run with only three powered axles - I know: I tried it!!  :D



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 Posted: Sun Apr 28th, 2013 01:30 pm
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Well, Dapol Dave has already got back to me and has not only promised to arrange replacement parts for me but has also offered them free of charge. I cannot praise his kindness enough.
:cool:



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 Posted: Wed May 1st, 2013 09:12 pm
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Glad you'll be able to sort your loco, but can I suggest that if your circuit breaker didn't trip you may have a problem with your DCC wiring being too thin?  Does the coin test work at the point where the loco shorted - ie place a coin across the track and check if the booster/circuit breaker trips immediately?



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