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Member postings for Boldminer

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

Thread: Charatan motors
13/10/2021 01:58:39

First of all I must appologise to all who took the time and trouble to reply to my query, it appears that my first message of thanks is somewhere in the ether. Thank you Trevor for your kind offer of the two motors you have but following Daves link to the class 22 build I found exactly what I was looking for. Looking on the internet I discovered that I could buy them here in Thailand at a ridiculously low price so 4 have been ordered. I built a small dual gauge track here in Phuket for the enjoyment of the local kids ( me being the biggest ) and entertain them most Sunday afternoons. Presently I am down to my last bucketful of coal and am now using barbeque charcoal to fire the engines but have you ever tried feeding strawberries to a donkey, they're insatiable.

I have discovered a source of steam coal not too far away on the mainland but because of covid restrictions we are unable to leave the island hence the need for the Charlatan. So once again thanks to all

Regards, Colin






Edited By Boldminer on 13/10/2021 01:59:14

Edited By Boldminer on 13/10/2021 02:00:36

07/10/2021 01:39:26

Sorry about the typo, the title should read....... Charlatan Motors

06/10/2021 09:54:36

Can anyone please give a definitive answer as to what motors I should use for this loco and tell me where they can be purchased. I've spent too much time on the internet going around in circles and getting totally confused in the process,many thanks,


Thread: Tom Senior
08/09/2021 08:57:09

I would like to thank everyone who took the time to respnd to my request for help. I was refered to Simply Bearings of Leigh { Gtr Manchester } and what a fantastic service I recieved. I was emailed back within a couple of hours with the news of what I wanted was in stock. The bearings are now on their way to me in Phuket so once again thanks to all. Colin

06/09/2021 10:21:23

My thanks to Brian and Chris for their very quick replies. I will most certainly act on their advice/recomendations. Unfortunately what I failed to mention was that i actually live in Phuket, Thailand, so I'm affraid nipping out to bearing services etc. is out of the question. As I mentioned I've spent 2 days trying to locate something on the internet but I cannot even find a bearing manufacturers product list to help me. I will use the links provided and hopefully secure the parts required in the UK. Mamy thanks, Colin

06/09/2021 08:26:33

Is there anyone out there who can tell me where I can purchase thrust bearings for a Tom Senior M1 X Y and Z feed handles, 5 required. I have been trying on the internet to no avail for the last two days. Many thanks

Thread: Fire bed
11/02/2021 08:08:50

Is there a hard and fast dictate or rule of thumb, to calculate how thick the fire bed should be in relation to lets say the bottom row of fire tubes or the bottom of the fire hole

Help, information and advice always gratefully accepted. Colin

Thread: Charlatan axles
29/02/2020 04:46:36

Does anyone know of errors in the dimensions for the charlatan axles. I've just made a set to the specs on the drawings only to find that the wheels are grossly out of gauge!, They don't even fit between the frames. Using the dimension on the drawing in auto-cad the wheels again are shown to be out of gauge. To add to the confusion one machined side of the axle is show as being 1/2" shorter than the other side, leaving no room for the crank to be fitted. Have i missed something some where along the line ?

many thanks, Colin

Thread: Charlatan axles
23/02/2020 08:07:58

Can anyone tell me if there is an error with the dimentions for the Charlatan axles as supplied by Blackgates. I've made and fitted the wheels again made to drawings only to find that they won't fit between the axle blocks.

I've copied the drawings onto auto-cad only to find the error is also present there as well. help please !

Thread: Track laying
26/09/2019 05:16:50

Thanks to all, I now have a good staring point. Next comes the hard part ( making it ).

Regards Colin

25/09/2019 08:47:36

Can any-one advise me on the minimum radius for 5" track. I have just had a plot of land made available to me that is 20 meters x 20 meters and would like to erect a track so as to entertain the local kids here in Phuket. I brought my engines over with me with this in mind, but now I just need a little help to get started. A few locals have seen the engines in steam on rolling roads and were enthralled .For myself I hope to relive the enjoyment I got entertaining the kids back in the UK. The engines are 5 and 31/2"g and I need to know for sure whether this is the exact spacing between the tracks or is there an additional allowance to be included

Thread: Gloss to Flatt
09/12/2018 09:13:16
Thanks to all that took the time and trouble to reply to my query. I do know of a place here in Phuket where I can buy a matt aerosol so that is the route I'll try first. Regards, the Boldminer
08/12/2018 04:21:45

Can anyone tell me if there is a way to alter a gloss finish paint ( supplied wrongly by a UK supplier to me here in Thailand) to produce a Flat finish. The main cause for concern at the moment are the wheels of the loco that have already been painted. Can I simply spray over them with a 'flat' lacquer and would this be OK on the boiler? Your replies would be greatly appreciated.

Thread: no recoil
11/08/2018 13:29:18

Michael G, Bazyle , Michael M, John Haine, Dick H and Russell, once again thank you for your support and assistance and again in order of posting :- Michael G that screen shot is a great help and will be used to produce a new anchor. Bazyle thank you for the explanation of the 'proc cess' it has gone a great way to lifting the fog that surrounds the black art. John Haine I really do appreciate you help and advice. To clarify my information about 'the drop' the pallet nib drops approx. 30% down the face of the escape wheel tooth. The face of the teeth were not attacked with a file, merely polished with Crocus paper and still retain their flat tops. Dick H the clock is fitted with an adjustable eccentric, the use of which has been tried (to no avail) , all the arbors do 'rattle' from side to side and the free wheeling action is not impeded by pinching the frames. Russell as I explained to Dick H., there is an eccentric and has been tried, but I must admit that I did not wipe the residual oil from the pallet nibs (will do in future). So gentlemen, after reading your comments I think that the obvious way forward is to produce a new escape pallet with the help of Michael Gs' screen shot and to double check the other relevant dimensions, many thanks , watch this space ! Colin

10/08/2018 05:00:21

Many thanks to Russell, John and Michael, I will try to respond to your posts in order but please bear in mind that I am in no way an horologist or experienced clock maker. RUSSELL, my apologies, the clock is a John Wildings 'large Wheel' clock. The spring thickness does conform to the suggested thickness of .40mm . I have tried the movement with the pallet nibs both wet (not excessive) and dry using 'clock oil' from Meadows and Passmore, all to no avail. JOHN, there is no recoil what-so-ever on the escape wheel. I have tried the clock fully wound but don't get any improvement at all. I have also applied extra torque by increasing the pressure on the large wheel but all that seems to achieves is a louder click as the pallets engage with the escape wheel, incidentally the pallet drop is approx. 30% of the escapement tooth. MICHAEL, you are of course correct, the clock is a John Wildings' Large Wheel clock. Thanks to all, Colin Standish Ps. excellent video !

09/08/2018 05:50:07

I have been trying for two weeks or so now to get this clock to run. All the pivots are polished and free in their respective holes, the train falls from side to side with the 'audible click' the arresting faces of the escape pallet have been brought to a mirror finish as have the corresponding faces of the escape wheel. The spring barrel is free to rotate on its' spindle, the pallet arbor is free and the clock set in beat using an ' amplitic' audio device. When set going there doesn't appear to be any force in the escape wheel that would result in a recoil action sufficient to maintain the momentum of the pendulum. The only thing that I can find at odds with the designed plan is that the spring purchased from Rite-Time for this model does not conform to the spec. quoted by J.W. ie it is aprox. 60thou. down on width. With the escapement disconnected and just one turn on the spring the clock will 'free wheel' for the equivalent of 36hrs. or so, with the escapement engaged ( with several turns on the barrel ) it will not run passed the naturally decayed swing of the pendulum. ANY IDEAS PLEASE ?

Thread: Heritage steam under coal threat
30/05/2013 08:23:44

England is floating on several layers of coal including anthracite and 'best steam coal'! It's a fact that most of our present inferior coal supplies are imported from the USSR and other eastern block countries as well as 'some of Mr. Magregors' ( remember him? ) coalmines. It's correct that there are well over 150 years worth of coal left under GB and that just a few mines where ' mothballed ', Assuming that we now have the technology to BURN coal rather than just set fire to it doesn't it make sense to open the mines again. Apparently we are running out of petrol,but, didn't the Germans crack petrol from coal during the war? and this is just one by-product!

Thread: Dividing
26/01/2013 13:21:08

Thank you very much to everyone that took the trouble to reply to my ' division ' query. After reading through all the replies it became obvious to me that what I have is a simple BSO dividing head with no possibility of compounding. So the information in the 'tables' is correct when you can compound using the rest of the infomation for the particular application. The clock I am making is a 'Large Wheel' skeleton clock by John Wilding but again what I overlooked was the fact that he was using a Myford dividing head with a 60:1 ratio.

After following Mr Jones's example using a 99 hole plate I have calculated that the equation results in an error of only .000011 per division which as I used to say is "good enough for the pit". So, now all that remains to be done is to visit a local engineering co. for material for a new plate.

So once again thank you Les and the rest of you gentlemen for you time and trouble.

25/01/2013 15:53:52

I wish to index for 198 teeth using a BSO dividing head with a 40:1 worm-wheel. The problem is that the supplied dividing tables give the same results for both 198 and 197 ie. a 20 hole plate at 4/20. This cannot be correct for both, can anyone help please ( 198 ). Do I need to make a special plate ?

Thread: exhaust's
17/08/2012 10:35:20

thank you Julian, I'm just about to check my actual measurements using auto-cad.

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