Toronto Society of Model Engineers

THE TORONTO SOCIETY OF MODEL ENGINEERS

VOL 34 No.10

JUNE 2004 THE MODELLER

TSME CHAT LINE: tsme@yahoogroups.com

Well it’s finally looking like summer out there, so invite someone to travel with you – carpool if you can, cycle, steam car or streetcar, or bus it and head down to our next meeting of Model Engineering minds - Come and join your fellow Model Engineers at the next meeting on:

FRIDAY 11 JUNE 2004 AT 8.00pm, at 1001 QUEEN STREET WEST, TORONTO

PARKING AT THE HOSPITAL HAS BEEN INCREASED TO $5.00 FOR THE EVENING. So try and arrange to carpool if you can – this is also a great way to get to know your fellow model engineers while traveling together to and from the meeting

THIS WILL BE OUR LAST MEETING IN OUR 70^th YEAR – IN THIS EVENING’S PROGRAM, EXPECT TO HEAR FROM:

DAVE POWELL who will talk about the upcoming OMLET Live Steam Loco competition at the Hamilton Museum of Steam and Technology on 27 June.

RICHARD TROUNCE will carry on with his talk on bearings. This time more on rolling element types and how they are made. Also preloading, lubrication and installation.

A GUEST of ERNIE HILL will give some guidelines on the art of welding,

GERRY REED is going to talk on parting off in the lathe,

DAVE SAGE will show and talk about babbiting the bearings for his rebuilt engine, and

ROBERT WYSS has photos from the NAMES 2004 show in Wyandotte

IF YOU HAVE A PROJECT YOU ARE CURRENTLY WORKING ON, or recently finished – please bring it along and we will certainly do all we can to fit your item into this program.

2003/2004 DUES ARE NOW OVERDUE ! REMINDER REMINDER

Please send your dues - $30.00 in to DAVE POWELL, if you haven’t yet paid yours. Or give him your cheque or cash at the next meeting. Dave is acting for Treasurer Allan Gouldburn for the moment.

WHAT’S UP & COMING : MEETING DATES 11 June

DOORS OPEN TORONTO: 29 and 30 May. Come and see the Live Steamers; some from TLS/TSME as well as some 7 1/4” gauge at the Roundhouse just south of the CN Tower – also step into the Whistle Steam Brewery for a sample of their beer while you are at it ! 10am until about 4pm both days.

BOATS IN THE PARK: Hamilton Museum of Steam and Technology: 29 and 30 May. Demonstrations and displays of radio controlled model boats of all kinds. Perhaps try your hand at the hobby. Other radio-controlled models will be on display as well.

OMLET: June 27. This competition determines which driver and steam powered model locomotive can travel farthest on the least amount of coal. A must for the steam enthusiast. From 9.00 am at the Hamilton Museum of Steam and Technology.

IN CASE YOU MISSED IT – THE MAY MEETING

ERNIE HILL has collected the castings for his next project – a 4” scale Case Traction Engine. Ernie gave some idea of what it was like during his apprenticeship with a foundry in Ireland when machining equipment was pretty basic. He had brought in the front wheels and axle for his Traction Engine. He talked and explained the machining of castings. The rims of the wheels were rolled in a hand roll and welded at the joint. He also showed the con-rod, part finished, and the quite large trunk guide casting ready for machining

GERALD GARDINER brought in an air powered “Air Hog” model aircraft and explained and demonstrated its workings. The aircraft has a small air reservoir that is pressurized by a hand pump. The air is used to drive the aircraft’s propeller. As with Steve Lilly’s engine, the piston of the air motor impinges on a small check valve to allow air in for the power stroke. Gerald also showed and talked about a small copper boiler he has scratch built for a boat engine. He hopes that this boiler will provide more steam to increase the speed of the boat. The freelance design has an upper steam drum with two smaller lower drums interconnected with vertical water tubes to the upper drum.

Our Guest, RICHARD MORGAN gave a slide show illustrating the history of wind generators starting with a vertical axis type built in Persia. The next development was the fixed position horizontal axis types which although effective could not be altered to the varying wind direction. An improvement was to rotate the whole assembly manually to align the axis with the wind direction. The final development was the type that can automatically align with the wind direction using a second vane to drive the rotating machinery so that the vanes would always benefit from the changing wind direction. Richard then went on to explain in some detail his own invention (for which he has applied for a patent) of a vertical axis multi-vane generating wind turbine, single or multiple stacked that he claims has a much higher efficiency than all existing units. The multi stacked units would be able to provide greater outputs by having a generator driven by each set of vanes. The main feature of his design which is that the vanes collapse when moving in the direction opposed to the wind direction. Richard asked for any offers to build a model of his invention.

ROMAN GORCZAK showed a part dismantled compressor from an automotive air conditioner. He has been able to remove the clutch but not yet the scotch yoke or the pistons. Any suggestions as to how he can do this, Roman would welcome.

RICHARD TROUNCE gave a very interesting talk on Bearings – the Rolling Element types – primary there are ball and roller types. The simplest is the deep groove ball bearing. The ball bearings biggest enemy is dirt ! An exposed bearing should be shielded against dirt to prevent premature failure. The inner bearing race should be a tight fit on its shaft, and the outer race, a good but not tight fit in the housing. A ball bearing can take both radial and axial thrust and bearing tables will give figures for both – these figures are rotational speed dependent. Bearings should be allowed to take some axial movement to allow for shaft expansion due to temperature changes. Higher axial ratings can be obtained for a particular size of bearing by increasing the number of balls. Spherical outer race ball bearings allow for shaft minor deflections about its axial centerline. Also, taper roller bearings can take high axial loads – but are expensive !

FOR SALE, WANTED AND/OR FOR FREE

FOR SALE: by LLOYD HALL: Coleman Oil Space Heater

FOR FREE from RICHARD TROUNCE: 2 original IBM PC’s (ones without hard drive) – still working. A/C window unit, 20,000 BTU – still works.

FOR SALE: from STAN RANKIN: 83 issues of Projects in Metal/Home Workshop magazines, some old and many current issues. 65c each. Will deliver to meeting if necessary.

FOR SALE: by BRIAN BURNS: Allchin 1 ½” Scale Traction Engine. Length 26”, Height 16 ½”, Width 11 ¼”. Rear wheel dia 9”, front wheel dia 5 ½”. Drawings castings Gears, Full Boiler Set

WANTED by DEREK O’DELL: 4” Rotary Table

FOR CORRECTIONS / CHANGES PLEASE EMAIL:

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