Darjeeling frames

[Roger Page 1Participant @rogerpage1]

I am considering the Darjeeling as a new project. Is anyone supplying laser cut frames?

Edited By Roger Page 1 on 14/06/2010 16:25:16

[Roger Page 1Participant @rogerpage1]

[peter ravenscroftParticipant @peterravenscroft57700]

blackgates said that they where i have e-mailed them about castings etc but have not had a reply yet

i am bulding it in 3 1/2 gauge and i am up todate wth the latest issues not found any problems as of yet

regards

peter 

[millingheadParticipant @millinghead]

NOT FOUND ANY PROBLEMS

started cutting out frames ,drawings have missing dimensions .

at the rear of frame centre line ofrear axlebox to centre line of what i dont know,

I thought this was the centre of the shape at the top of the frame but visually

the (centre line) looks way off centre .

that’s when work on this project stopped.

I look on this website regularly but no postings since shortly after the article started.

Iam beginning to think that other people started this project but after they have seen the

host of drawing errors, missing dimensions, (always the crucial one’s)

and have given up

[JasonBModerator @jasonb]

Posted by millinghead on 12/01/2011 17:10:30:

I look on this website regularly but no postings since shortly after the article started.

 

Maybe look a bit more carefully, this is the thread that has most of teh errors in it discussed

 

http://www.model-engineer.co.uk/forums/postings.asp?th=41333&p=1

 

J

[David Clark 13Participant @davidclark13]

Hi There

I am not aware of many errors on this loco.

What ME issues are the errors in.

regards David

 

[JasonBModerator @jasonb]

Maybe I should have said errors & queries, as there seem only two errors  mentioned in the thread I linked to one was the extra 1 1/2″ added by the ME draughtsman and the other the 0.780″ thick spring.

 

Don’t know what millingheads errors/ size queries are.

 

Jason.

[Donald MitchellParticipant @donaldmitchell68891]

Millinghead,

 

I take it from the tone of your mail that you are somewhat disgruntled by, and I quote, “the host of drawing errors, missing dimensions, (always the crucial one’s)” you seem to have encountered in the B Class drawings.

 

As far as I am aware there have only been two errors printed, as already quoted by JasonB, 1. the dimension added by the ME draftsman incorrectly and 2. the similarly wrongly quoted thickness of the top spring leaf. Neither of these errors can be attributed to the designer, Raymond McMahon.

 

I am having some difficulty in understanding exactly what dimension you claim to be missing from the drawing, I quote from your mail:-

 

“at the rear of frame centre line ofrear axlebox to centre line of what i dont know,

I thought this was the centre of the shape at the top of the frame but visually

the (centre line) looks way off centre”

 

If you could clarify your query, I will take up the question on your behalf with Raymond and get the definative answer for you.

 

Raymond does not use the internet, I am in constant conversation with him and I have his authority to post to this forum on his behalf.

 

Raymond spent many months doing nothing but checking and double checking the drawings before giving the project to ME for publication, he is very nearly certain that there are no missing or wrong dimensions on the drawings – and most certainly not a “host”

 

I can advise that quite a few B Class engines are being made, a good number of them are right up to date with the series as it is being published. Very few problems are being reported, in fact only two so far. 

 

Please don’t just bad-mouth the project; if you need some clarification on any point of the build, ask the question and I’ll get an answer quickly from Raymond.

 

The finished B Class engine is a real beauty and it will be very well worth the effort.

 

Donald Mitchell
Castle Douglas
Bonnie Scotland

 

 

[millingheadParticipant @millinghead]

on page618

 centre line of rear axlebox , distance to the centre line in question , at the top of the drawing is4 1/4 BUT lower down just above the hornslot the distance is 4 5/16  ?

my question is . Is this centre line the centre of the top cut out  7/8 deep as it does not look to be in the centre .

chassis bracket on page 675

plan view why not put a dimension to show how far the outside of the bracket is from the frame (sorted this one by doing my own drawing ,full size) !

[JasonBModerator @jasonb]

Yes it does look like the centre lines have been given two different dimensions, I’d say its probably an ME draftsman rather than the original drawings.

 

Probably the 4 5/16 is axle to the row of 4ba holes and the 4 1/4 should be to the middle of the 2 13/16 springing points for the curves but as you say even then its way off centre but then again we have had this before on other engines where dimensions were altered but not the drawing.

 

Jason

Edited By JasonB on 13/01/2011 19:58:31

[David Clark 13Participant @davidclark13]

Hi There

Yes, the illustrator joined the lines up as they were in line.

I missed this on the drawings as both dimensions were correct.

regards David

 

[peter ravenscroftParticipant @peterravenscroft57700]

hello millinghead

                           if you send me your e-mail address i’ll send you all the faults that i have found so far i am nearly keeping up wih the published artical but have fallen back a bit due to the cold weather my e-mail address is peterravenscroft@blueyonder.co.uk

regards

peter

[Donald MitchellParticipant @donaldmitchell68891]

Hi Millinghead,

 

I regret I am unable to understand your last post, made on the 13th January at 19.34

 

You say:- on page 618 – centre line of rear axlebox etc.,

On page 618 of my M.E., Raymond is dealing with the cylinders ?

 

and you further talk about:-

 

Chassis bracket on page 675 – on page 675 of my M.E., there are drawings of bits for a Maudsley engine ?

Confused !

Donald Mitchell
Castle Douglas
Bonnie Scotland

[JasonBModerator @jasonb]

Look at the drawing on page 618

 

In the middle of the drawing at the top there is “C/L” from the right of this line to the axle ctr line is given as 4 1/4″

 

Further down the drawing between the same two ctr lines is a dimension of 4 5/16.

 

 

Regarding the bracket on page 625, I don’t feel there are any other dimensions needed, you have the radius of the bracket and where the curve starts and ends so its just a case of setting the dividers to the radius, swinging two arcs and where they cross is the point you mark the curve from, simples

 

J

 

[David Clark 13Participant @davidclark13]

Hi Jason

It is only simples if you know how (or are a Meercat).

regards David

 

[Donald MitchellParticipant @donaldmitchell68891]

There isn’t a drawing on page 618 – only four pictures of the cylinders.

and on page 625 there is stuff about the van Rennes engine ?

 

That is, unless you lot have a different M.E, issue number 4391 from the one I have. ?

 

Donald Mitchell
Castle Douglas
Bonnie Scotland

[Nicholas FarrParticipant @nicholasfarr14254]

Hi Donald,

                    I believe the page numbers are in reff of issues 4378 and 4379 vol 204.

 

Regards Nick.

[Donald MitchellParticipant @donaldmitchell68891]

Nick,

 

Thank you for your explanation, all is now clear.

 

I had failed to remember that the page count returned to 1 when the new volume 205 started with issue 4381 in July 2010

 

Do the members of this forum agree with me, that it would be a good idea if contributors, when quoting a page number, would also add the issue number? – Especially when discussing something which appeared some issues previously.

 

I do also wish that some contributors would add a bit of punctuation to their posts, some are next to impossible to understand ! 

 

Donald Mitchell
Castle Douglas
Bonnie Scotland

[Author]

Posts