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Member postings for RRMBK

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

Thread: 300 Years of the Steam Engine
25/05/2012 00:14:23

I must live near Clive as WHS told me again today that they have not yet received it and don't expect any more deliveries this week. Ho Hum.

17/05/2012 13:29:51

Can I preface my comments by saying that I am a subscriber, have been for many years and am satisfied with both the magazine and the delivery I get.

However David, having spent 20 years in the contract printing and magazine distribution industry, it is you as the publishers who are the customer of the printer and distributor, they should play to your tune. Also I suggest that you in turn do have a responsibility to your customers especially subscriibers . Especially with the contract print industry as it is today you have a powerful hand.

I suspect that the printers are getting the bulk supplies out of their factory warehouse system to the Wholesalers & Newsagents to create working space for themselves; and the subscription copies are sent off to a mailing house where they wait their turn with all the other magazines to get enveloped and posted. Meanwhile the ordinary copies are already with the wholesalers & newsagents, who naturally put them on sale as soon as they recieve them irrespective of publication release date.

Given that subscriptions are mainly there not to benefit the reader, but to give the publisher a secured source of revenue they can base their budgets & forecasts on; then with all due respect you do have a responsibility to get the subscriber copies out early. It is a simple matter to write into the Printers contract that they do not distibute wholesale copies untill after the mailing house has confirmed that all subscription copies have been sent out, with suitable substantive penalties for them if they do not.

They won't like it of course but in the present economic climate use the significant business clout that you have to benefit your readers and maintain subscription copy numbers and revenue that you will undoubtdly loose in a steady flow if people can get it in the newasgents earlier. You will only retain subscribers who do not have easy access to well stocked local Newsagents, most notably rural areas This will take a long time to show in the finances due to the annual nature of subscriptions but you will see a steady long term decline until the newstand sales mean the forward budgeting brcomes unreliable and we end up loosing our valuable magazies due to lack of sales.

With the big stable of specialist titles you are a significant customer and you and especially your subscribers have every right to be treated as such.

Kind regards and thanks for a very enjoyable magazine.

Thread: accurate boring
28/03/2012 17:26:58

Good evening all, Some help please. I want to bore two crankwebs for a single throw crank. The webs are approx 2"long by 1" wide x 3/8 thick bright bar.

Two holes in each so the crank and pin can be inserted and silversoldered and the piece of the main crankshaft then cut away. I have tried to drill these singly,as a pair,in the drill press and bored against the 4 jaw chuck but all results have come out with the holes slightly off right angles to the face of the webs at various angles. error doesn't seem to be consistent. Anybody got an easy trick or solution to get all the bores aligned and square to the web face please.

Many thanks


Thread: Northern Modelling Exhibition
06/03/2012 09:11:17

I attended on Friday which was quite quiet but I felt the range and number of club stands and the models displayed was good. I agree the trade stands were scarce but if attendance figures were good then that may persuade others to consider it next year. Going back to the origin of the thread then if we are to encourage youngsters and bring familiesin, the show needs to embrace the plastic modellers etc. I found the model trucks & the RC air craft display fascinating although not my cup of tea, and kids are far more likely to respond to these than the static display of a beautifully worked and intricate loco chassis that some of us will inspect and marvel at, wondering how on earth people find the time and skill to achieve such perfection and prodigious output!

Thread: LBSC Locomotive designs
05/02/2012 17:03:14
Hi all --- regarding the list of designs , there is a list in the book by Brian Holllingsworth " LBSC,life & locomotives" which I think is pretty comprehensive.
Thread: Pipe union nuts, olives & ends.
05/02/2012 01:54:12
They are not in Tubal Cain's Mod Eng handbook ( at least not in my ancient copy!) that was my first port of call as it is such a goldmine of information, Also I have "Screw Thread manual " by F.J.Camm of 1942 with over 40 pages of thread & screw tables but it does not list anything similar. I suspect the thread system has been created by someone ( LBSC?) matching the appropriate sized M.E 40 or 32 tpi thread to the pipe / Union diameter rather than by scaling something that exists in full size.
Brian K.
03/02/2012 18:45:25
Thank you very much indeed Colin, a very interesting article and provided me with just what I needed,
Kind regards
Brian K.
01/02/2012 10:38:36
Can anyone please point me in the direction of a table of the correct dimensions for the union nuts, end fittings and pipe olives etc for the various small pipe sizes that we use e.g 1/8, up to 3/8 .
I would also be interested in any articles on the manufacture of unions, union nuts, olives etc.
I have done a search through the indices but not come up with very much. ( probably my lack of understanding of search protocol!)
Many thanks
Brian K.
Thread: seaside miniature railways
23/01/2012 02:19:36
There was a minature railway on the promenade at Colwyn Bay in the 1950's / 60's. I believe I have a postcard of it somewhere. There has also been a railway around the Marine lake at Rhyl for many years which has recently been revived.
Not a seaside railway but there is a 10 1/4 gauge tourist passenger railway at Betws y Coed linked to the railway museum there.
Kind regards
Brian k
Thread: LBSC displacement lubricator
06/12/2011 14:34:36
Hi Les. If the lubricator were in the steam pipe and before going to the valve chest, so there is a flow of steam that would pick the oil up and carry it onward with it, then I could understand your suggestion, but in this design the only pipe into the lubricator is the steam supply and this comes directly off the front of the valve chest. there does not appear to be any route back out of the displacement chamber for either the steam, or the oil.
06/12/2011 13:19:16
Thank you all for the shared knowledge and the interesting links. its been great reading them. However one thing is still eluding my simple brain. As the steam supply is at full boiler pressure, then the pressure in the lubricator oil reservoir will surely be less than boiler pressure due to heat losses and the losses due to the lubricator pipe restrictions. If so how can the oil " Flow " in the reverse direction down the lubricator feed tube aginst a higher pressure ?? is it perhaps something to do with the relative density & or viscosity of the oil in relation to the steam ? does the oil perhaps lie on the bottom of the tube and the steam pass over it in the opposite direction?
I am once again mystified by some of the wondrous dark arts conjoured up by steam!!!!
Brian K.
06/12/2011 06:35:48
I am building a 21/2 gauge single Cylinder loco from LBSC mid 1950's. The drawing shows a displacement lubricator which appears to be a copper tube with a brass spigot connecting it to the valve chest. In the end of the spigot tube LBSC says to drill a no 70 hole and keep it pointing upright in the finished article. Has any one made one of these and if so does it work please?
Also how does it work? I can understand the steam entering under pressure, condensing and the water then raises the level of the oil, but surely the steam presure from the valve chest is constant and the pressure in the lubricator tube will be less because its cooler; so how does the oil get back down the tube and into the valve chest please?
Many thanks
Thread: Martin evans Tennant
28/04/2011 11:57:22
Has anyone completed this design please, is it a viable useable model, and are any castings available?
Many thanks
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