Castledare Miniature Railways Inc.

Transcription

1 Run Days: 1 st Sunday of each month from Niana Station, Castledare Place Wilson 3 rd Sunday of each month from Wilson Park Station, Kent Street Wilson Castledare Miniature Railways Inc. Home of the great little trains of Western Australia ABN: All correspondence to: The Secretary PO Box 337 Bentley WA 6981 secretary@castledare.com.au Linda Hall, (Secretary AALS) 11 th Jan 2016 Subject:- Agenda Items for AALS 2016 Meeting. Dear Linda, Castledare Miniature Railway Inc (CMR) desires the following to be placed on the agenda for the coming COBDEN meeting this Easter. 1. Driving Age. CMR is of the opinion that the driving age should be amended to 16years of age for both steam and diesel where State legislation would not be contravened. The wording as per Driving Age as shown on the attached Insurance document for SOUTHERN FEDERATION of MODEL ENGINEERING SOCIETIES (United Kingdom) can be adopted with the proviso relating to State Legislation added. The present AALS age limits act as a deterrent to Junior Members progressing through the Club systems. Juniors much younger drive at non-public days and at AALS Conventions, and nobody can say that they are really under strict supervision. 2. Yoke Buffers. There are some in-accuracies with the AALS standards illustrations and a lack of general knowledge as to the basic operation of this coupling system. The attached drawings (four in total) depict the relationships. Failure to observe the relationships can lead to buffer face locking and inability to negotiate curves successfully. The WAGR used a Drag Link for passenger service for added safety against uncoupling in service and to act as a restraint to roll-over in a derailment situation. Dimensions have been added so that components can be made. 3. Bogies (couplers mounted on such and those advertised with rigid body mounting) It has been pointed out to CMR that the AALS standards do not specifically mention that bogies are not to be fitted with couplers. Couplers are not fitted to bogies of rolling-stock around the World as this is detrimental to the intent not to unload wheelsets and or increase lateral forces. Bogies with couplers in a compression derailment situation (they probably caused such) will rotate and thus jack-knife the carriages (that is, they can-not hold a staightish line) and throw persons out. The WARFORD recent derailment is an example and the first five points raised on the attached documents are not really relevant. Couplers on bogies are very dangerous and MUST

2 Run Days: 1 st Sunday of each month from Niana Station, Castledare Place Wilson 3 rd Sunday of each month from Wilson Park Station, Kent Street Wilson Castledare Miniature Railways Inc. Home of the great little trains of Western Australia ABN: All correspondence to: The Secretary PO Box 337 Bentley WA 6981 secretary@castledare.com.au not be allowed. Even more strange is that bogies are being advertised that do not have a centre plate and seem to rely on roller side-bearers thus providing a rigid four-point inter-face to the wagon / carriage body. This arrangement means that any tendency to rock, to move into super-elevation or run through track geometry variations will cause wheel unloading which is most un-satisfactory. Gap side-bearers as per railway practice should be employed fitted just inside of the wheel-set running line. These direct a line of force to the inside rail face. Some bogies have been seen where the side-bearers are out-side of the frames and thus any rocking etc uses the wheel-sets as pivots. A simple diagram inserted to the AALS standards can clarify these issues.. Regards, Les Smith, Secretary. 9th-Dec-2015.

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7 Desired V8 Valve Spring 1.25" OD 2.5" O/A 20 Nyloc or Lock Nuts Buffer Beam Pin with 'R' Clip Section thru Centre 5mm gap in Tension IMPORTANT 'R' Clip - Optional Scale 1:2 Pin with 'R' Clip CASTLEDARE STANDARD YOKE BUFFER &HOOK CMR MS-001 Sheet 1 of 4

8 Desired 20 V8 Spring 1.25"OD 2.5"O/A SECTION B-B SCALE 1 : 2 Buffer Beam MUST BE USED IN PASSENGER SERVICE CASTLEDARE STANDARD YOKE BUFFER & D-LINK CMR MS-001 Sheet 2 of 4

9 Square /2" UNC Drag Hook Scale: Half Full Size 6 R R100 R5 R50 R39 R Elongated Drag Link R5 10 R R21.73 Scale: Full Size CASTLEDARE STANDARD HOOK & D-LINK CMR MS-001 Sheet 3 of 4

10 NOTES RE- NORWEGIAN/JONES YOKE BUFFERS Couplers in buff are designed to push on the faces. Yoke buffers are designed to have very minimal lateral or vertical movement. The face gap is set at 5mm to allow 20mm vertical movement. Wagon springs MUST be of 20mm maximum travel. Tare to load 12mm deflection desired. All buffers to be set to 123mm min to 127mm at tare. Should wheels be reprofiled, packers of thickness equal to radius loss must be used to correct buffer height if necessary. Bogie mounted couplers are not to be proliferated unless bogies have interconnecting draw-bar and second bogie has free longitudinal float. D-Link must be used in passenger service. Efforts should be msde to keep the coupler overhang to a minimum. Note that locomotives normally have much heavier cspacity draft/buff 'springs'. CASTLEDARE STANDARD CMR MS-001 YOKE BUFFER - NOTES Sheet 4 of 4