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Member postings for Simon Collier

Here is a list of all the postings Simon Collier has made in our forums. Click on a thread name to jump to the thread.

Thread: Ballaarat construction series
24/10/2021 01:28:22

Thanks for your design of this interesting loco Luker. I know that it ran on 3’6 gauge, but what scale did you use? I can’t find it in the articles. Dividing 42” by 5” gives 1 in 8.4, but what did you do? f

Thread: Myford ml7 "parting off"and "max working size"
22/10/2021 12:22:20

Parting 2” stock on a Ml7 is a bit of an ask. I like the T profile parting tools. I use a 1 mm one a lot on small brass fittings. They come in 1, 1.6, 2, 3 mm and possibly more.

Thread: Transporting 5 inch live steam loco
11/10/2021 21:35:22

I have never owned sedan cars, only station wagons. I see no disadvantage. When my old Camrey 1993 got rusty, I bought my brother’s Subaru Liberty wagon. However I discovered to my absolute horror that the rear seats don’t fold flat, as they always have done on wagons. Traditional wagons like Holdens and Falcons had longer chassis than the sedan equivalent and could fit heaps of stuff on a flat deck. None are made anymore, giving way to these so called SUVs which are no substitute at all.
I can get my Simplex in the Subaru alright, but not my Sprinkbok. I built a raised plywood deck for it but it is a poor solution. Club members have wagons, trailers, hatch backs, vans and SUVs. Not one lifts a loco out of a car boot.

Thread: Non arrival of issue 308
04/10/2021 10:40:28

I paid for a digital subscription of ME last Thursday and was emailed to expect a subscriber number within 24 hours. It is now four days later and no email.

Thread: It’s time for a happy ‘Dog story’
27/09/2021 10:28:25

Lovely story, thanks Michael. I have a dog in my lap as I type.

Thread: Injectors of Peter Cauley
12/09/2021 21:59:40

If you are building injectors for the first time, get Derek Brown's book. It can't be recommended highly enough.

Thread: Wild life, bird watching and photography
10/09/2021 01:15:21

Here is a Regent Bowerbird at O'Reilly's, 900 metres up in the ranges behind the Gold Coast. It is a bird watching resort and as they feed the birds, they are quite tame. This was October 2019. img_2301.jpg

09/09/2021 12:56:41

I'm a bird watcher but a fairly passive one. I don't photograph them except to snap one with my phone, such as yesterday when a male King parrot was feeding in a bush just outside my workshop door. I should make a list of birds I have seen in our fairly small yard over the years. Quite a few.

Thread: 3 inch Southworth engine
05/09/2021 21:37:51

What are you using for the piston seals and gland seals? If using Viton O-rings, you want very light squeeze. They expand when hot and may well get too tight. The official, specified squeeze from charts for a dynamic application is far too much for use in our locos. A friend recently made a pump in the style of a Westinghouse compressor for his 5" gauge engine and it works fine. I have one on my Simplex built by Warwick Sandburg which works, but is very inefficient as a serious water feed. I intend to make one fairly soon.

Thread: Q1 and B12 valve gear
30/08/2021 00:45:31

Under " view edit" the dimensions used are shown. Also look at "valving". To test a valve gear design, you really need to draw it in Cad, with the x axis being the line of the motion, not the frames. Then you can derive dimensions not specified, on eg, plans. It is a fair bit of work.

I was frustrated by not being able to analyse Stevos, recently, with the " wrong" driveline, ie, launch links with direct drive to slide valves. I first used Don's Excel sheet to get close with correct suspension pin offset, but can't go forther with Wallace. It is the only simulator I am familiar with. I suppose I could contact Allan Wallace.

29/08/2021 23:15:21

The Wallace program has some examples of Stephensons and Walschaerts with most of the dimensions shown. Perhaps you could try some of these in yours. The program takes a bit of familiarisation if you haven't used it.

Thread: Ploughing engine running on air
20/08/2021 10:34:46

I have long thought the name of this forum should be changed to The Workshop Machinery and Tooling Forum or something similar. Ask about a pair of pliers or a Myford lathe and you'll get pages of replies. I suspect more than a few members don't make models at all. That is absolutely fine; just make the title reflect the content.

18/08/2021 22:02:45

Another member, Jim, is building the other of the pair but much more slowly.

17/08/2021 22:27:59

Ross is the best and smartest model engineer in our club. He has built some fine locomotives and now his interest is traction engines. This is his Fowler ploughing engine running on air, a real treat.


Edited By JasonB on 20/08/2021 13:12:52

Thread: Consequences of Machining Cast Iron
12/08/2021 22:33:13

I have a pump pack of sorbolene cream and roll of paper towel in the workshop and do a pre wash with this when leaving the workshop. I also put these in my tool kit when I run my engine. Gets most of the stuff off your hands and easy on the skin as well.

Thread: Lathe milling
19/06/2021 23:55:19

You can buy vertical slides suitable for Hafco lathes at Hare &Forbes. I think you mount them to the top slide position.

Thread: Fitting a Drill Chuck Confusion
04/05/2021 22:26:18

I cut the tang off my 3MT tailstock chuck as I had to wind the barrel out excessively to get the taper home.

Thread: B&D workmate
25/04/2021 12:54:49

Mine is 80s. I replaced the MDF "jaws" with solid wood at some stage. As my work benches are covered in stuff, I often set it up outside to do a job. The plastic springs for folding the legs are broken which makes things pretty awkward as they flop about. Recently I looked online for replacements buy they were more expensive than a new Workmate. The most recent use was practising hand cutting dovetails. It is about the most useful, and used, thing I have.

Thread: Boilers
23/04/2021 10:54:33

Page 34 in the Notes: 18 gauge or 1.2 mm.

22/04/2021 22:27:20

The book mentions 75 psi because that is what the WeeBee safeties we buy from the US are set for. They are excellent. If you build the Ellie boiler with solid 3 mm end plates and the single central stay, you can't go wrong. The 2" tube I used in my G1 boilers is quite thin walled, maybe even 20 G. Interestingly, once my Ellie gets pressure up, as soon as it starts to run on the track, the gauge shows close to zero. It seems to use the steam as it is made. As has been stated above, a freely running oscillator needs very little pressure to run.

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