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Post by doubletop on Dec 29, 2012 10:32:30 GMT
I can't see your magnets giving a reliable solution. The air gap between the magnets and the rails makes a huge difference, and will be changing all the time. Also, it won't work on aluminium track Richard Richard It was a suggestion made by somebody else and I didn't pursue it. Like any brain storming session all the little snippets can aggregate into something useful. Paul/Ian/Pete On the subject of adhesion; the track I was running on had only come back from the galvanisers three days before and was laid the day prior to my first run. Nobody else had run on it prior to my second run a couple of weeks later. No doubt a significant factor Pete |
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peteh
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Post by peteh on Dec 29, 2012 12:58:48 GMT
Hi Doubletop,
Does this mean you were successful on the second run ?
Pete
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Post by doubletop on Dec 29, 2012 21:35:15 GMT
Pete
Sorry. The track hadn't been used so no change. It was still fresh galvanizing
Pete
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philh1
Involved Member
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Post by philh1 on Dec 29, 2012 23:27:55 GMT
Pete,
No pressure honest.... but I am counting on you getting a good run on your Northumbrian. I am hacking away at bits of brass and steel on this side of the planet (cut my thumb twice this week already).
Tender is getting close to assembly.
PhilH
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peteh
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Post by peteh on Dec 30, 2012 0:45:02 GMT
Phil, At least you are making the necessary sacrafice of blood to the ME gods  I can garantee it won't be the last time - I seem to 'give blood' on a regular basis. At the moment I am still waiting for a somewhat cooler day before commiting to the sauna (oops - read shed! ). I don't know which is worse, the English winter or the Aussie summer. I sooo wanted to get my engine running on air before going back to work next year but sanity is prevailing. Pete |
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peteh
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Post by peteh on Dec 31, 2012 12:19:34 GMT
Well as it is too hot over here (42.1 celcius today!) to even consider the shed I thought I would show you what I am spending my time on - A couple of days ago I found that Airfix had re-released the paddle steamer engine and my local hobby store had some. I have the Beam engine and 1908 locomotive so it was an immediate buy. These kits, as I am sure some will remember, were originally motorized using a small 1.5v motor. This is no longer the case BUT the plastic mouldings are still on the sprues. With a quick web search I found the missing section of the instructions and with a bit of 3/32 rod, a small motor and a little strip brass I hope to build this as motorised. I must admit to being a hopeless cause as regards Airfix kits - still buying, making and stashing them - I have a couple of wardrobe sections full of unmade kits, from floor to ceiling. I wonder how many more of you still have this affliction As there s less than four hours left (in W.A.!) may I wish all of my followers a successful New Year Pete Attachments:
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philh1
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Post by philh1 on Dec 31, 2012 20:58:35 GMT
Pete,
I picked that very model up the other day in one of the model shops (the paddle engine) but didn't buy it.
I finished the mock horn riveting on my 6 wheel tender tonight (48 x 3/64 diameter rivets). I am a little behind schedule because I had hoped to have the tender chassis complete for the new year. I will post some more shots soon.
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steam4ian
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Post by steam4ian on Dec 31, 2012 21:00:09 GMT
Happy New Year Pete.
It was 43 Celcius over my lathe two days ago. With Perth's heat travelling over to Adelaide with days forecast at over 40 I will not be seeing too much workshop time. I have the Go/No go say as to whether the club runs next Sunday or we close due to ther heat; its not looking good.
Just in case those who are standing on their feet (we have to stand on our heads down here) think we are wimps about hot workshops consider sweat. Your forehead sweats, that drops on your glasses, you wipe it off and it leaves a greasy smear so you miss read the dial, you take a wrong cut, you say some funny words, you go inside to the air con comfort and a cup of tea, you sit in front of the TV, your wife gives you a chore. Can you see the pattern?
Freeze to death you lucky Poms (Not serious!)
Ian
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Post by Deleted on Jan 1, 2013 0:58:24 GMT
Your forehead sweats, that drops on your glasses, you wipe it off and it leaves a greasy smear Ian Ian, whilst working Qatar in 1986 I took my Land Rover for a drive in the desert in 50C. Unfortunately we incurred a puncture: changing the tyre your forehead sweats, that drops on your glasses, you wipe it off and it leaves a greasy smear and you think that you might die.... Happy New Year! JB |
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peteh
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Post by peteh on Jan 2, 2013 2:04:09 GMT
FINALLY! I managed around 2 hours this morning before the temp got too high. I was checking on the binding and realised that one connecting rod was not particularly parallel to the frames. Made up a new, longer (0.7mm) bronze bearing and longer crosshead bolt to match and have now removed around 80-90% of the binding. I am pretty sure that the rest is just waiting for a bit of running in.
I have also made new accesory for the club run days. I will take a photo later and let you have a guess as to what it is ;D
Pete
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Post by Jim on Jan 2, 2013 9:50:12 GMT
It's an interesting exercise working through the range of tight spots that creep into the model as it is assembled for the first time but it's great when you at last have it all free running. You're doing well Pete.
Have my fingers crossed that a cool change will head your way soon so you can work without baking.
Jim
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peteh
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Post by peteh on Jan 4, 2013 13:07:45 GMT
Spent a lot of yesterday at the doc's and getting a CT scan of a 1 year old injury that is still giving me heaps of pain - don't slip on steps and land on your coccyx. Today I have spent some fruitfull time in my workshop. Realised I needed to complete the gaskets and paking before air testing so got all of those done and have actually started on some pipework Also painted the 'mystery object so will have to take a photo tomorrow for you. Pete |
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Post by Jim on Jan 5, 2013 0:44:26 GMT
1 year old injury that is still giving me heaps of pain - don't slip on steps and land on your coccyx. Pete Yep been there done that! Mine was while launching our trailer sailer in the dark on what turned out to be a slimey green ramp. It took a couple of years before I could sit on a chair in comfort for any time.  Glad to hear your back in your workshop but when I said I hoped you got a cool change I didn't mean we wanted your heat wave. 40C here today and any metal out in the sun will burn your hand if your daft enough to try and pick it up. Will spend the day inside building my Colin Archer sailing rescue boat. Jim |
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peteh
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Post by peteh on Jan 5, 2013 4:17:34 GMT
Hi Jim, commiserations on the weather (and on the coccyx) Hoping to get back in the shed after lunch, aalthough it is warming up here again. |
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peteh
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Post by peteh on Jan 6, 2013 5:03:23 GMT
Hi again folks, Well here is my set up for running on air. Two large blocks of steel and some temporary pipework. Finally finished this morning. Hooked up the compressor and ... nothing  Spent an hour in the sweatbox (shed!) reworking timing on the valve rods and main eccentrics and I now have 60% power, but not quite enough to sustain running. It is somewhat trying to go but I think I still have too much friction somewhere so more investigation is required. Pete |
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peteh
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Post by peteh on Jan 6, 2013 5:05:38 GMT
Picture didn't load! Attachments:
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peteh
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Post by peteh on Jan 6, 2013 5:06:42 GMT
Mystery object - all nicely painted now. It is approximately 12" high if that helps. Attachments:
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Post by Jim on Jan 6, 2013 7:07:22 GMT
It's a holder to put your soothing ale on while tending your loco on a hot day... ;D ;D ;D
Jim
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Post by Shawki Shlemon on Jan 6, 2013 7:11:16 GMT
What is the mystery ? ;D a special purpose tray .What you are going to do with it ?
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Post by doubletop on Jan 6, 2013 8:39:38 GMT
Hi again folks, Well here is my set up for running on air. Two large blocks of steel and some temporary pipework. Finally finished this morning. Hooked up the compressor and ... nothing Spent an hour in the sweatbox (shed!) reworking timing on the valve rods and main eccentrics and I now have 60% power, but not quite enough to sustain running. It is somewhat trying to go but I think I still have too much friction somewhere so more investigation is required. Pete Yeh!!!! There are no instructions on the setup of the slip eccentrics but a bit of thought and it can be worked out. I made the assumption that the stop collars both need to be at 90deg to each other because the opposite crank pins are set 90deg apart. Then the position of the flat on the stop collar has to be symmetrical in relation to its associated crank pin. Otherwise the forward and reverse valve events will be different. Statement of the obvious really. Any slight difference in the actual event at the front and back valve port can be adjusted by the relative position of the inner and outer rocker arms. You may need a few more psi to get it running at first but plenty of oil and just let it run for an hour or so and it will loosen up considerably. Also use some soapy water and check for any leaks in and deal with them. Great day for you. A video is required please............ Pete |
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I can garantee it won't be the last time - I seem to 'give blood' on a regular basis. At the moment I am still waiting for a somewhat cooler day before commiting to the sauna (oops - read shed! ). I don't know which is worse, the English winter or the Aussie summer. I sooo wanted to get my engine running on air before going back to work next year but sanity is prevailing.
