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Member postings for DMB

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

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Thread: NEW MAGAZINE FOR MODEL ENGINEERS
27/12/2011 23:17:39
I hope that not too many mugs rush to buy yet another new me - type mag at he expense of ME/MEW, after all ,if sales dip too much they could, just could follow Myfords and we dont really want that, do we?
Dont laugh - I did a "what if?" on Myfords 5 years ago and started collecting all the Myford bits that I thought I might want in the future. I envisaged likliest scenario would be them going bust like we keep reading about the rest of engineering in UK. Ageing owners sell out to someone who cocks it all up and it still goes down the pan. Flogged off to someone who takes the whole outfit to the Far East and down-market.
I`ve got most Myford bits I wanted so I`m laughing.
Thread: Respirators
19/12/2011 08:51:01
Fumes from arc welding are dangerous - could cause cancer - presumably lung as a result of breating said fumes.
Tech. colleges teaching arc welding use an extractor hose in each welding booth.
Thread: Morse Taper Removal
15/12/2011 15:59:26
 
Hi all,
Please refer to the "Milling Chucks" thread, my posting of 8 Feb. This will give you my solution to freeing jammed MT2 tapers.
Thread: The Sandown Park Model Engineer Exhibtion 2011
13/12/2011 22:34:49
I really enjoyed the Exhibition. Very good. Miss Myfords. Think 1/2 of Worthing club must have been there on the Friday.
Stewart H, now you know why the M25 has been nick-named the world`s largest carpark!
David, can we please have some seats somewhere or perhaps small groups of seats in a number of locations for "The Wearies"?
Thread: MEW, would less be more?
02/12/2011 19:03:39
Billy,
I think that your last post on this thread about if you subscribe you have access to all of the MEWs ever published, is misleading. I have been a subscriber ever since 1st issue, but only to the "hard copy," NOT the digital form. I followed your instructions but it says digital subscribers only.
John.
Thread: Clarkson Stirling Single 3.5"
25/11/2011 00:29:47
Hi all,
You may be interested in a little book that I had many years ago, about full size loco wheels - it gave the numbber of spokes in wheels of many Brit. loco designs. Just Google Mike Sharmans Wheel Specifications.
John
Thread: metric taps
25/11/2011 00:17:40
Woops! forgot the time - my prev. post here should have read TD`s post of the 24th @ 0345.
25/11/2011 00:14:21
Re Terry D `s post today @ 0345. Could it be that back in 1955 and earlier, Metric threaded bolts were made from Imperial sized Hex. bar as this was probably all that was cheaply available but since industry has gone over to Metric, metric sized Hex. bar is now the el cheapo stuff to use, even for Imperial/USA threaded bolts?
For sometime now, it has been necessary to use Metric spanners on certain BA sized Hex. Hd. screws, as Metric Hex bar is all thats available.
 
 
Thread: Displacement lubricator
22/11/2011 16:13:07
The preserved "Dukedog" GWR 4-4-0 lives just up the road from me - @ the Bluebell Rly. That loco has the usual GWR displacement lube mechanically connected to the regulator. There is a huge condensing coil for it in the cab, tucked up under the roof.
We are talking here about 200lb + so big condenser. No doubt if you go to your nearest preserved railway that has a GWR loco, you will observe the same fittings.
There was at least one set of articles way back in Model Engineer on this subject - hazard a guess @ 1970`s??
Thread: Car Alternator as Traction motor?
18/11/2011 16:17:23
I was told sometime ago that Rolls-Royces have a combined alternator/starter motor system. This means that the device is permanently engaged with the engine, resulting in silent starting, eliminating the terrible screech when the Bendix mechanism operates for starting most other cars. Also, there is a `slave` battery in the boot.
Perhaps one of the wealthier forum members with such a machine, can confirm the above.
Thread: Steam Fairground Equipment
15/11/2011 12:50:11
Carters Fair is on TV this Thursday, 17th Nov. 2011. Look for "Fairground Attractions" @ 8pm, Channel 5.
They have a Savage centre engine working in their 3-abreast gallopers carousel, together with an organ. There are also the spectacular Steam Yachts, operated by an engine and large boiler sited betwwen the 2 "yachts."
They also have some vintage Diesel-engined fairground tractors.
Thread: Town Bent Engineering Rotary Table
10/11/2011 17:54:57
Hi Diane,
 
I believe Town Bent Engrg. ceased trading some years ago. I have their Horiz/Vert. mill.
Very good little mill. They had a trade stand at an ME exhibition some years ago, about 20-25 years ago, I think.
 
John
Thread: Northumbrian Cylinder Ports
08/11/2011 14:38:03
I understood that the way to do this job is to file/mill a flat on the edge of the bore and drill "up" the slope in the direction of the bottom of the `trench` (port). LBSC and Martin Evans recommended this method and possibly, a good many more designers would have done likewise.
The cyl. block set up in a drill vice at an angle and `sighted`.
John
Thread: How NOT to tap a hole
08/11/2011 14:32:02
I seem to remember we were given oil at school to tap mild steel.
 
John
Thread: Slitting saw runout
29/10/2011 23:18:48
Hi all,
 
Have looked at the American site, Martindale.com and on page 9, they show piccie of support washers, hardened, precision ground. Bottom of page 13 they say that in absence of a drive key, the support washers do the driving. The washers are similar to those used for grinding wheels, but I suggest that no -one tries to use these on grinding wheels - they are not identical. Hope above explains how the makers intend use of their products.
John
Thread: Drill Sharpening Jigs - Advice please.
27/10/2011 22:14:17
Hi all,
 
As a matter of interest, where are Guhring brand drills made? Anyone know?
John
Thread: hardening and tempering
23/10/2011 17:43:38
Hi,
 
I seem to remember seeing on this forum or perhaps it was madmodders, something was said about no need to heat carbon steel to a full red heat and quench to harden, preparatory to tempering. The recommendation as I remember, was to heat to a colour indicating a higher temp than the tempering colour, quench, clean up then re-heat to actual tempering colour.
Can anyone please confirm this?
Regards John
Thread: Preventing Rusting in Garage
19/10/2011 23:23:28
Ivy has been encouraged to grow over the roof and South wall as its ever-green, it gives year-round protection from the sun down here in southern England, thus preventing those fast temp. rises.
Also got a max and min thermometer and a hygrometer in shed to tell me whats going on.
John
19/10/2011 23:19:18
I should add that there is along sheet of thin plastic over bench which I just peel back to do work @ bench. I never seem to need use of oil-filled radiator, tubular heater and dehumidifier which all live in workshop.
Workshop is 10ft x 8ft apex roofed wooden shed, completely covered in roofing felt and sandwiched bubble wrap on roof. Inside, roof lined with 2" polystyrene sheets. Walls covered in 3-ply plywood and cavities stuffed with glass wool sold for house roof insulation. Even the door got same treatment. Conccrete floor painted with black anti-damp jollop, layer of hardboard then 2 thicknesses of redundant floor tiles from house.
John
19/10/2011 23:12:02
Hi all,
My heavy Fobco Star bench drill and mill both wear plastic sandbag "hats." Further bags on drill table and each end mill table. Myford has original plastic cover. Mill chiptray has home-made box of 4 bayonet fittings wired in series and 4 x 60 w Edison bulbs which just glow on a total of 15W, this being on 10 months of the year. This wet Summer, its stayed on. This is all I have to stop rusting.
John
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