Page 9 - September October 2000
P. 9

  casings, old bronze castings, and gearboxes closed underneath but with exposed worms. The gearbox will contain a worm- on-shaft, usually carried in two bronze bearings, and might have an idler gear on a shaft.
One rare variation is the torque arm system, where the gearbox has an extension rearwards that carries the motor, instead of the motor being bolted solidly to the chassis.
Another part of the mechanism will be the connection between the worm shaft and motor shaft. Though usually just a length of flexible tubing, it can be quite a well- engineered Carden shaft with universal joints each end.
You could have some separate valve gear hangers, unscrewed from the deck of the chassis. Rarely, these are soldered on.
At the rear, except in very early models, there is an insulated plastic bushing that carries the tender drawbar kingpin. The kingpin will carry the metal drawbar and a coil spring. The nut that secures the kingpin screw usually also retains a small solder tag which sends a wire to one motor brush. The other motor brush is generally earthed to the loco chassis, either with another wire, or just through the motor’s screwed connection to the chassis.
Finally you should have, in one large lump, the entire superstructure of cab, boiler, smokebox etc., possibly with a separate smokebox front.
The general principle for all conventional brass is that all left-hand (looking from the cab forward) loco wheels are insulated, as are all right hand tender wheels. All right hand loco drivers collect current, the truck wheels might or might not. All left hand tender wheels collect current. From the above you will see that, conventionally, locos and tenders are of opposite polarity - their metalwork must not touch. If you have any metal rolling stock, OR do any double-heading, it is good practice to ensure the pilot coupler is plastic-shanked, or at least insulated from the loco chassis. Similarly, if the cab has a metal fall plate, it must be insulated on its underside, where it touches the tender footplate.
The tender: this much simpler item will usually comprise the one-piece tender shell, two trucks mounted with spring-loaded kingpin screws to the floor; the floor itself usually secured with four small screws to cross pieces at the bottom of the tender shell. Some locos have a removable oil bunker (especially where the prototype could be oil or coal fired), and some Vanderbilt tenders have a removable rear end for the water tank.
Sometimes the tender floor is actually the whole underframe, other times the underframe remains part of the tender shell, and the floor is a removable rectangular panel underneath.
Right, at this point we have described the basic elements - next chapter will start on a rebuild, a section at a time, with notes on whatever oddities and problemsIcanrecall! ●
UNCOUPLED CARS
  BEANERY
BSR/FS £50; Steam Era Models, 3 VR coach kits- one each AW/BW/AE £50; Foreign- VSOE Collection - Rivarossi BR39 196 loco DB £70; Rivarossi Bar Car £45; British:- Bachmann A4 4-6-2 Do- minion of Canada limited edition in wooden box £90; Bachmann, 2 Thomp- son coaches £9 each.
Contact Mike Carter 01628 784867 evenings or e-mail E8carter@cs.com
FOR SALE:
Large private collection. N scale Ameri- can, OO, HO French, HO and HOe Ger- man. Mainly boxed, as new. List available.
SAE to Stuart Robinson, 45 Chelsea Gdns., Cheam, Surrey SM3 9TN.
email srobinson@soldiermagazine.co
FOR SALE:
HO locos and freight cars by Athearn, Roundhouse, Atlas, Stewart etc., most virtually new condition, boxed. Items not spoken for by Oct. 19th will be at the convention bring-and-buy. Items re- served beforehand can be delivered at convention. Ring for lists, details. Richard Hodder 01793-783199
WANTED:
WANTED: HO power. 4-8-4’s of CRIP (R67), UP,SP, Wabash, CBQ, ATSF: 4-8-2’s of CRIP (M50/M50a), and Wabash. Also CRIP passenger cars, cabooses, and C&NW cabooses.
ALSO – FOR SALE:
Sundry HO equipment, ATSF and NYC, plus some books, mags., and videos. Phone Tom Ingrams 0208-850-8868, or SAE
for list to 3 Orchard Ct., 130 Blackfen Rd., Sidcup, Kent DA15 8PX.
 ADVERTISING IN ROUNDHOUSE:
Please send “BEANERY” (private sales, exchanges and wants) adverts. to the Editor. Insertions are free of charge though it is traditional to donate a small percentage of receipts from successful sales (particularly those involving larger sums) to the Region. COMMERCIAL/TRADE advertisers: send enquiries as to rates, deadlines and other details, to John Sammans, 32 Oker Ave., Darley Dale, Matlock, DERBYS. DE4 2GN
PLEASE MENTION ROUNDHOUSE WHEN REPLYING TO ADVERTS - PRIVATE OR COMMERCIAL.
   FOR SALE:
HO Scale. Large number of white metal castings for trackside, and for street and building detailing. E.g. switch stands, signal relays, track bumpers, grade cross- ing signs, A/C roof vents, parking meters, street lights, traffic lights, fire hydrants, mailboxes etc. Also good selection of bill- board adverts. circa 1960/70. SAE for lists, details, prices. (Also I’ll be at the Bradford convention).
Ron Taylor, 39 Larkswood Rd., Corringham, Essex SS17 9DF. 01375-643214.
FOR SALE:
A collection of HO freight cars, passenger cars and locomotives, varying manufac- turers and ages, mainly B&O, all fitted with Kadees and offered at reasonable prices. Also a fully scenicked, sectioned, 16’ x 10’, HO, two-level layout, offers in- vited. For stock list or further details, please contact...
Paul Vanhecke on 01372 277849 (not evenings) or via E-mail at rjfen@raisig.demon.co.uk.
FOR SALE:
Bright steel, round-head screws, Thread Size 2.56, Length 0.5”, as commonly used to mount couplers and trucks to HO cars . 20 screws in glass phial. £1 per phial incl. p&p within UK.
Contact Philip Dove 0191 2712206.
FOR SALE:
Due to mid-life crisis refocus, a quantity of quality HO items are surplus:
American:
MDC HOn3 3 Truck Shay kit -undec/can motor £45: Proto 2000 locos, Wabash E8 £25, E7 £30, PA £35, GM&O E7 £30, DRGW PA £35, SD9 £25: IHC- Mountain, CB&Q, fitted with Digitrax decoder £65; Overland Brass locos - Reading GISa 4-6- 2, undec., fitted with Digitrax decoder £300; DRGW M64 4-8-4 Flying Rio Grande 1704, fitted with Digitrax de- coder £550; DRGW M68 4-8-4 Green Boiler 1802, fitted with Digitrax decoder- £500; Hallmark Brass TP 0-6-0 switcher undec. £80; Australian:-
Austrains NSWR 80 class Bicentennial loco limited edition £80; Powerline AN class BL loco £50; Powerline 5 coaches
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