Countryman’s Steam – Chain drilling

[JasonBModerator @jasonb]

Could it be a side view of the front draw bar?

 

Looking at the photos and etching the bar that the horse is attached to could be the angle that is shown in section, a bar sloping down to the front axle (large circle) and another bar going upto the perch 13/16″ higher up.

 

J

[Nicholas FarrParticipant @nicholasfarr14254]

Hi Jason, I did wonder myself if it was a drawbar, but why show it in this drawing.

Regards Nick.

[JasonBModerator @jasonb]

I’m inclind to think davids scan is part of a larger drawing and the drawbar got included by mistake as it was squeezed in near the wheel.

 

Jason

[David Clark 13Participant @davidclark13]

Hi There

The drawing is on the centreline of the side of the wheel and is clearly part of the wheel.

I will ask author on Monday.

regards david

 

[TerrydParticipant @terryd72465]

Hi,

 

I’m glad that others are confused by items at the bottom right. I’ve only just seen the drawing and despite my love of eng. dwg. I really can’t see how this relates to spokes. The two main components are different lengths, the long one has an offset end and the large circle is obviously not a hole. Also, apart from the angle shown, there is hidden detail at each end which does not relate to the wheel.

 

What is also misleading is that the centre line of the large hole aligns exactly with the side of the wheel. Coincidence or intentional? The plot thickens.

 

Regads

 

Terry

[Engine BuilderParticipant @enginebuilder]

This is great, a series for beginers with drawings that even experienced model engineers cannot understand ! (me included.)

[KeithParticipant @keith]

After the first article, I saw this as a possible future project. I don’t want to appear critical as the author has had a lot of stick already, and others seeing this will be dissuaded from producing future articles. However, I read the section on tools and thought that the project was going to involve only hand tools as this is all that is mentioned, I think this section would have been better if seperated from the main article by putting it in a seperate frame). I too am confused by the lack of dimentions, hopefully this will be resolved later. Plus for a beginner, more details are needed in areas. I do get the impression that information for beginers has been added to what was already written. Potentially this is a brilliant project!

I like trhe idea suggested by others of submitting articles to (volunteer) proof readers to reduce errors / confusion!

 

Keith

[JasonBModerator @jasonb]

David, Any news on the unidentified bit of the drawing? As I said it looks like a side view of the drawbar, something along the lines of this

 

Oh and as it seems like the same drawing is being used for both front & rear wheels judging by it having both diameters, a note to say the front should only have 10 spokes wouldn’t go amiss either.

 

J

[David Clark 13Participant @davidclark13]

Hi There

Yes, bit of drawbar.

It was drawn with the wheel.

regards David

 

[JasonBModerator @jasonb]

Thaks David. Do I get the prize for the correct guess

[TerrydParticipant @terryd72465]

Hi,

 

I’m confused the drawing of the wheel seems to show a sleeve through the hub, but nor whether or not it passes through the outer washers, which I think it should for location of those washers, but no internal diameter for the washer is shown.

 

Further the side view of the hub shows the centre hole as threaded by using a BS 308 convention for a female thread. these are drawing conventions which a beginner may have studied. I’m now double confused . As a reasonably competent engineer I can come to my own conclusions and solutions, but beginners??

 

Please, Please, if we are to have a beginners series it should be not just a beginners series on basic hand tools but on the much more important conventions and accurate and understandable drawings as well.

 

Regards

 

Terry

[JasonBModerator @jasonb]

Terry I raised this point earlier.

 

There should only be one set of hidden detail for the bore of the hub – no sleeve. At each end of the hub a spigot is formed that is 1/2″ dia and the length will be spoke thickness plus washer, this 1.2″ dia is also the bore of the washer and IS shown extending to the outer face of the washer.

 

EDIT The drawing in the mag shows the bore & spigot extending the full width unlike the one david posted !! So ME can correct drawings not just post whats given to them or was it just a lucky error by the graphics dept.

 

The spokes are screwed to the face of the hub around the spigot and then the washer places over the top. Its usual to hold the spokes with CSK screws and use the washer to hide the screws, retaining the washer with about 3 small screws that fall under the hubcap. The gaps betwen the spokes will be filled with epoxy filler. The hub is not slotted for the spokes like on a lot of traction engine designs

 

Also an odd way to show CSK holes by just drawing the head diameter

Edited By JasonB on 13/04/2011 07:39:29

Edited By JasonB on 13/04/2011 07:40:48

[TerrydParticipant @terryd72465]

Hi Jason,

 

Thanks for that, I missed it in your earlier post, I haven’t yet managed to pick up my copy of the magazine from my newsagent in town, so I haven’t yet seen the published dwg. I have to collect as they don’t deliver out here to the village.

 

But I have a bit of cheer as the builders have finally completed my garage rebuild and I have just taken possession. Just need to fit out the workshop are now. .

 

Best regards

 

Terry

[ronnie barkerParticipant @ronniebarker18785]

i think there really has got to be done about how this engine is being put over in the mag first if there is anymore text about machine tools this needs to be next as i thought the engine could be built with hand tools from the from the text already printed!

 

second, this is not a engine for a complete begineer, when i first started model engineering there is no way i would of tackled a boiler, i no you could buy one but with prices and hard times the way they are most people couldnt aford one.

 

you need alot more pictures to help things make sence

 

if a begineer is to take on a big first project like this the get the drawings correct to give them every chance of building up the model with ease.

 

i no i moan alot they based victor meldrew on me but i dont like the heading of countryman steam, this was always john haining who made alot of very nice models and brought road steam to alot of model engineers, me including me having built hes 2” dairy engine, this engine and text doest come close to john.

 

jonathan

[ronnie barkerParticipant @ronniebarker18785]

i really miss brays bench, stan bray sent in clear photos and good text, anybody even me could follow an engine being built up with ease.

 

i think we should put him back on the boards!

 

jonathan

[Sean CullenParticipant @seancullen60833]

David,

 

are you able to tell us how many parts there are to this series please?

 

Sean

[JasonBModerator @jasonb]

This was asked in another thread and David thought about 10 issues. I said this seemed very conservative given the amount of advice for “beginners” that it contains.

 

If the author is assuming people following this have not used basic hand tools its going to need a lot written about turning, milling, riviting and boiler making. Not to mention a page dedicated to answering all the queries raised on the first drawing

 

Jason

Edited By JasonB on 16/04/2011 07:59:23

[Sean CullenParticipant @seancullen60833]

It was said a while back that the next part of this series would appear in issue 4408 once there had been time to check it over. There is no mention of it in issue 4407 as coming in the next issue. Can we be given some idea when it will appear please? There are a number of us who are still considering starting this project, but will not do so until we have seen enough to check it all out.

 

Sean

[David Clark 13Participant @davidclark13]

Hi there

Just checking countryman’s steam for 4408 now.

regards David

 

[Author]

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