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Post by Deleted on Nov 29, 2014 14:14:50 GMT
what's that little tool sitting across the buffers for Alan..looks purpose made for a job?
Pete
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Post by Deleted on Nov 29, 2014 19:53:38 GMT
Looks to me like a little smokebox rake for pulling the ash to the door
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Post by Deleted on Nov 29, 2014 22:52:22 GMT
what's that little tool sitting across the buffers for Alan..looks purpose made for a job? Pete ----------Well spotted that man !!........Now read Ben's posting for the exact answer >>>>>>>>>>>>>>>>>> Quote}-- "Looks to me like a little smokebox rake for pulling the ash to the door"...........Apologies for the crude handle but I've temp.run out of small wooden file handles..... It's part of the Disposal kit for end-of-day-running.....
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Post by Deleted on Nov 30, 2014 8:53:06 GMT
Hi all-------------Winter cometh ( or is already here in some parts ) and time to give the injectors their annual "pickle" in citric acid........As I haven't got any for the Bear yet here's Cadbury's after it's overnight soak >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ...............................................................................................................................
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Post by Roger on Nov 30, 2014 9:50:11 GMT
Maybe you can try one of those Silicon Nitride balls in there Alan?
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Post by Deleted on Nov 30, 2014 16:38:26 GMT
Yes indeedy !!------------- I'm making up a "Live Steam Injector Test Rig & Calibration Unit" ie}--- A free-standing, gas fired pot boiler and water container !!.....So I'll set-up the injector with the steel ball first ( to "prove" the injector to be a working unit ----then swap to Nitride and try again... It's that scrap Juliet boiler I bought of RUSTON 92 earlier on..................
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Post by GWR 101 on Nov 30, 2014 19:21:20 GMT
With the much travelled Firehole door. Regards Paul
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Post by Deleted on Nov 30, 2014 20:56:22 GMT
That's the one !!
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jma1009
Elder Statesman
Posts: 5,901
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Post by jma1009 on Nov 30, 2014 22:17:17 GMT
dont use nitrile balls please! john cashmore attributed them to a vast number of injector failures especially in check valves, they deform very quickly. cheers, julian
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Post by Deleted on Nov 30, 2014 22:26:29 GMT
One says NITRIDE and the other is saying NITRILE.....Is that just a different spelling or are we looking at 2 different materials ??........... Yes, I also had heard that those NITRILE balls were deforming in use ...Roger, was one of those sample balls a ceramic one ( Or ceramic based ??)
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Post by Roger on Nov 30, 2014 23:33:38 GMT
One says NITRIDE and the other is saying NITRILE.....Is that just a different spelling or are we looking at 2 different materials ??........... Yes, I also had heard that those NITRILE balls were deforming in use ...Roger, was one of those sample balls a ceramic one ( Or ceramic based ??) Ok, to clarify these different type of ball bearings... Nitrile - Soft black rubber, usually shiny and is commonly used to make 'O' rings. Silicon Nidride - Black in colour and harder than any metallic ball bearing. Used to replace conventional steel balls in ball races especially for ultra high RPM because they not only last longer, they're much lighter. Zirconia Oxide - White in colour and harder than any metallic ball bearing. Used to replace conventional steel balls in ball races usually where food stuffs are involved. The last two are both Ceramic and as far as I can tell are interchangeable although they look very different. I wouldn't have thought Nitrile rubber balls would have been much use as the ball in a non-return valve. I would think they would permanently deform under the pressure. If you want a soft seal then I'd use an 'O' ring and a Ceramic ball.
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Post by Deleted on Dec 1, 2014 0:34:30 GMT
Thanks for the update----so I CAN use one of those samples then ??-------
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Post by Roger on Dec 1, 2014 8:43:28 GMT
Thanks for the update----so I CAN use one of those samples then ??------- You most certainly can, I'll be interested to see if the weight of them has any effect on how they work.
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Post by joanlluch on Dec 1, 2014 23:20:33 GMT
Alan, I am not 100% sure but I think rubber nitrile balls are used in piston based dosing pumps (low pressure, high precision). To my understanding rubber balls provide a better seal on the non-return valves that make the pump.
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Post by Deleted on Dec 2, 2014 12:03:22 GMT
As mentioned earlier I'm looking at building the Bear's Swindon standard de-glehn type bogie over the Winter recess...A recent forage through various storage boxes reminded me that I had virtually all the parts needed ( though some would need a swift clean or re-machine here and there..)..First up was to give the two wheel assys. a visual check and here straight away was a problem}--- the centres in the axle - ends were full of grey primer and, to be honest, a tad too short.... With only the 1/2" pillar drill in commission at the moment I used a bit of lateral thinking and the 2 slab steel plates for the 10 ton press were put to good use ( Note to self}-- I MUST de-paint them at some time !!)........ .................................................................................................................................... Having done that I now fitted the mini-lathe's brand new face plate,which naturally needed de-greasing, cleaning and the threaded holes checked......With a wheel-set fitted between centres it now highlighted another problem ie}--- I'll need to make up a "special" drive dog in order for the assy. to turn.( that's the sketch for it on the clipboard behind the lathe ).....It needs to turn so I can remove the primer from the bearing surfaces and the tread faces using a very fine emery paper...Both sets will then get a couple of coats of Japlaq Gloss Black lacquer................................................. .............................................Meanwhile here's The Bears grate which is a Duchess one from Blackgates which requires one bar on either side to be removed, hence the black highlighting.................
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Post by Deleted on Dec 2, 2014 12:07:11 GMT
hi Alan
Nice to see some parts for the Bear being worked on....looking forward to watching this great locomotive progress...
Pete
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Post by Deleted on Dec 2, 2014 12:29:20 GMT
Here's a Manor's bogie wheels after turning at the SVR >>>>>>>>>>>>>>>>>>>>>
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Post by Deleted on Dec 2, 2014 12:43:35 GMT
hi Alan Nice to see some parts for the Bear being worked on....looking forward to watching this great locomotive progress... Pete ----------------------- OK, but be prepared to draw your Super-OaP pension in the meantime ..LoL !!
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Post by Roger on Dec 2, 2014 14:32:56 GMT
You don't need another drive dog Alan, just drill a hole in the faceplate to line up with a gap in the spokes and use a piece of threaded rod.
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Post by Deleted on Dec 2, 2014 15:20:28 GMT
You don't need another drive dog Alan, just drill a hole in the faceplate to line up with a gap in the spokes and use a piece of threaded rod. -------------- Animal !!!! ------- Anyway, I thought you were the "Jigs and Fixtures King" ?? -------- Just imagine that faceplate is the property of H.M. Dockyards .......Size 10 Parade Boots DO fit into dark orifices you know !! LoL .............................................. Anyway, here's the result of a few hours cleaning, clothing and filing...The 2 degree taper was already on the tread but the flanges needed a "Tickle" to give them a bit more of a GL5 profile.....I need a tube of J B Weld now as I've noticed a few small "half-blowholes" as it were that need filling....................It's time for a cuppa, then a few hours changing the rear brake calliper on my 1980 Triumph T140 Bonneville.........Right to the bitter end they steadfastly refused to change even the most simplest of poor designs eg}----- To remove either the front or the rear brake calliper you have to ( guess what ??).....................................................remove the wheel first !! It's true !!....Incredible !! >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ................................................................................................................................
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