Dean da Silva | 26/08/2017 22:51:06 |
![]() 221 forum posts | I knew in time that I would have to start putting my money where my mouth is- so here is the start of the first locomotive in my undertaking, the Rose. Not the best rendering, it's only a mock up- but this one shouldn't take too long to complete! |
RRMBK | 26/08/2017 23:03:52 |
159 forum posts 18 photos | Hi Dean. Really nice to see you are doing this lovely little engine I have built Rose and one of the real problems came with setting the valve events for the slip eccentric with the cylinder and valve chest mounted in the frame. The only way I was able to do it was to cut an oval slot in the frame adjacent to the valve chest and view the valve events through there. Also as I built the coal fired boiler. the smoke box mounting details and getting a good smoke box seal proved very difficult. Otherwise it is a great little engine but let down by the lack of an axle driven pump. The 21/2 gauge association hold castings for most of the main parts on Rose if anybody decides to build based on your rework of the design. Well done in your efforts and the first posting looks great. If you want any more detail private message me Kind regards Brian K. |
Dean da Silva | 26/08/2017 23:12:37 |
![]() 221 forum posts | Posted by RRMBK on 26/08/2017 23:03:52:
Hi Dean. Really nice to see you are doing this lovely little engine I have built Rose and one of the real problems came with setting the valve events for the slip eccentric with the cylinder and valve chest mounted in the frame. The only way I was able to do it was to cut an oval slot in the frame adjacent to the valve chest and view the valve events through there. Also as I built the coal fired boiler. the smoke box mounting details and getting a good smoke box seal proved very difficult. Otherwise it is a great little engine but let down by the lack of an axle driven pump. The 21/2 gauge association hold castings for most of the main parts on Rose if anybody decides to build based on your rework of the design. Well done in your efforts and the first posting looks great. If you want any more detail private message me Kind regards Brian K. Brian, |
Dean da Silva | 27/08/2017 08:06:55 |
![]() 221 forum posts | Thank God there are parts of this model that are more... straightforward- I hope. |
JasonB | 27/08/2017 08:11:07 |
![]() 25215 forum posts 3105 photos 1 articles | Dean are you making any allowances for currently available materials over what Curly has on the drawings? For example in the UK and mainland Europe you can no longer buy sheet steel for the side frames in wire gauge thicknesses, you have to use the nearest metric and adjust the buffer beams and stretchers to suit. I don't see anything out of the ordinary with the porting and passages, this was one reason I asked if you had any experience of making engines as it is the same basic method used on 90% of engines. There is a risk of assuming one thing if you are not sure what is in the text or on the drawing when Curly is actually doing something else
Edited By JasonB on 27/08/2017 08:21:51 |
RRMBK | 27/08/2017 10:21:03 |
159 forum posts 18 photos | Hi Dean & Jason from memory I think Dean is right,the holes don't line up. And there are a lot of inaccuracies in this design /drawings. I remember having quite a faff about with my port settings as per my first post. I think some of the problem stems partly form the fact that Curly designed it originally as a spirit fired loco and added the coal firing as an afterthought. Also reading Hollingsworths book I have a feeling that this design is not one that LBSC actually made himself. I think Jasons point is a good one as I had to make quite a few allowances for different material sizes when I built mine some years ago. |
Dean da Silva | 27/08/2017 19:06:22 |
![]() 221 forum posts | Posted by JasonB on 27/08/2017 08:11:07:
Dean are you making any allowances for currently available materials over what Curly has on the drawings? For example in the UK and mainland Europe you can no longer buy sheet steel for the side frames in wire gauge thicknesses, you have to use the nearest metric and adjust the buffer beams and stretchers to suit. I don't see anything out of the ordinary with the porting and passages, this was one reason I asked if you had any experience of making engines as it is the same basic method used on 90% of engines. There is a risk of assuming one thing if you are not sure what is in the text or on the drawing when Curly is actually doing something else
Edited By JasonB on 27/08/2017 08:21:51 As far as the wire gauge sheet steel is concerned, no. I am not, I'm going off of the nearest imperial size. Part of the reason with this project I have found myself keeping a lot of notes is this exact reason- I would rather hold off on something unless I am absolutely sure I have the correct I have the correct impression about the way the part is to be modeled. |
Dean da Silva | 27/08/2017 21:15:26 |
![]() 221 forum posts | Posted by RRMBK on 27/08/2017 10:21:03:
Hi Dean & Jason from memory I think Dean is right,the holes don't line up. And there are a lot of inaccuracies in this design /drawings. I remember having quite a faff about with my port settings as per my first post. I think some of the problem stems partly form the fact that Curly designed it originally as a spirit fired loco and added the coal firing as an afterthought. Also reading Hollingsworths book I have a feeling that this design is not one that LBSC actually made himself. I think Jasons point is a good one as I had to make quite a few allowances for different material sizes when I built mine some years ago. I have decided to stick to commonly found imperial sizes- no wire thickness sheet metal will be found in any of my designs. Regarding threads, I'll be sure to have a nice, standardized list of threads I've used in lieu of the ones Curly used. |
Dean da Silva | 27/08/2017 22:13:19 |
![]() 221 forum posts | From what I could gather thus far: |
Dean da Silva | 28/08/2017 04:47:01 |
![]() 221 forum posts | Well... everything seemed to be going okay until I put it all together and tried to make it move. |
Dean da Silva | 01/09/2017 07:25:55 |
![]() 221 forum posts | I have never had a boiler cause me as much of a headache as this one, the dimensions make zero sense, the article was about as helpful as an American government employee, I'm about 98% sure its wrong, or the drawings are wrong, or I am a complete and utter dunce. |
RRMBK | 01/09/2017 17:16:17 |
159 forum posts 18 photos | Kind regards Brian K. .What sort of problems are you having? Apart from no crown stays it looks a lot like the boiler I built.
|
Dean da Silva | 02/09/2017 05:38:20 |
![]() 221 forum posts | For now, I am going to just leave the boiler in the same sort of situation I usually leave my sister- alone. |
JasonB | 02/09/2017 07:28:07 |
![]() 25215 forum posts 3105 photos 1 articles | It may be worth pointing out that if you right click any of Dean's images and then select "copy image address" then paste that into your browser you will get a full screen image which looks even more impressive. Mac/Ipad users may need to do something different. |
Michael Gilligan | 02/09/2017 07:39:38 |
![]() 23121 forum posts 1360 photos | Posted by JasonB on 02/09/2017 07:28:07:
It may be worth pointing out that if you right click any of Dean's images and then select "copy image address" then paste that into your browser you will get a full screen image which looks even more impressive. Mac/Ipad users may need to do something different. . On iPad ... press and hold on the image until a pop-up appears, offering | Save Image | Copy | Select Copy, and then paste that address into a new browser tab. MichaelG. Edited By Michael Gilligan on 02/09/2017 07:41:49 |
NJH | 02/09/2017 10:23:07 |
![]() 2314 forum posts 139 photos | .... or indeed, on the iPad, just use two fingers on the image and " Stretch" it to fill the screen. Norman |
Michael Gilligan | 02/09/2017 14:06:39 |
![]() 23121 forum posts 1360 photos | Posted by NJH on 02/09/2017 10:23:07:
.... or indeed, on the iPad, just use two fingers on the image and " Stretch" it to fill the screen. Norman . Correct me if I'm wrong, please Norman, but: Doesn't that just result in 'empty magnification' ? MichaelG. . Edit: [answering my own question] ... in the case of these images, which are only small anyway, there is no difference. Edit: I had misinterpreted Jason's post Edited By Michael Gilligan on 02/09/2017 14:27:53 |
Dean da Silva | 02/09/2017 21:04:03 |
![]() 221 forum posts | Alright, little update here. 2. Water pumps, valves etc. on the back heads of boilers really can be of any design that is compatible with the design. I'm more interested in the locomotive itself, it's design rather than little plumbing oddments. 3.The outlines of some of the parts such as the frame sides are kind of approximated. The drawings are not the best that i am going off of. I can try, but I can't guarantee that it is spot on when there is a lot of undimensioned radii. |
Dean da Silva | 02/09/2017 21:57:34 |
![]() 221 forum posts | Since I am at it, just to give everyone an idea of what I am up against and why I will be omitting some parts.
Edited By Dean da Silva on 02/09/2017 22:03:41 |
RRMBK | 02/09/2017 23:20:40 |
159 forum posts 18 photos | I do remember reading an article on the O gauge Beyer Garrett but it wasn't very much detail. I will try and find it. Seems like you are setting out a whole lifetime of work for yourself here!! but I'm sure there are many people who would benefit from the results of of your undoubted computer skills. I have tried to get into CAD but its completely beyond me and also I suspect many others of my generation. I hope that we all can give you support from this side of the pond in researching old articles etc. Kind regards Brian K. |
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