Here is a list of all the postings David Gosden has made in our forums. Click on a thread name to jump to the thread.
Thread: Lathe help!! |
12/07/2016 17:53:14 |
Several years ago I bought a Sieg C3 from ArcEurotrade when the AC motor version was about to be replaced by the DC version, so an excellent price. Since then it's done all sorts of work both general mending and more precise and demanding work. Support and backup is great, from Arc, here and many online forums. There's a wealth of info out there. The milling attachment is a bit of challenge and rather limited but apart from that the world is your oyster. Lots of updates and mods available when you need them. I have done several and some improvements too when needs have arisen. The current project is a freelance 5" gauge loco - even turned the wheels from 115 mm blanks - can be done - just! Well worth looking at the later version! Very pleased with mine Edited By David Gosden on 12/07/2016 17:54:35 |
Thread: D C Stirling/Hot Air Engine - Burner |
25/05/2016 15:23:17 |
I think there have been 'challenges' with burners as it appears there are several different designs. On the box that came with my engine there is a picture of a tank with a small vertical vent pipe from just to the right of the handle. Until now I have not seen anything about a felt pad but I have seen glass spirit burners like the ones used in small oil lamps. I think these were with the last engines made. It does seem that stopping the meths 'boiling over' and causing the flare up can be done with a felt pad.. I'll have a go at this as soon as poss but may be a while as I'm on a time deadline to build a 5" loco - test run possible in 2 weeks time so need to finish a rolling chassis. Also - the management's birthday !!!!! 'Nuff said? If you have a go at a modification to your engine get back and let me know how successful it is please. David G
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24/05/2016 10:00:41 |
Thanks Andy - useful data I did not have but I got close to the dimensions you give. I'll make another and try it as the current burner tends to flare after a few minutes. I think this is due to pressure building up in the burner tank as it heats up. But until that happens the engine works fine, meaning a little tweaking to your dimensions may sort that out. Thanks again. David G |
Thread: 5 inch Scale Buffers |
24/05/2016 09:47:26 |
Pure magic! Thanks everyone.
Regards, David G |
23/05/2016 20:07:47 |
I am now in the final stages of constructing the frames of a 5" gauge 0-6-0 diesel shunter not dissimilar to a BR Class 03 and working on the buffer beams, so a quick question on scale and position of buffers. 1) Height above rail level? 2) Distance apart ? (or from centre of buffer beam will do) I measured a standard gauge loco and scaled the height above rail level as 3.7" and distance apart as 6.4" (2.3" from centre) but would appreciate confirmation of correctness or otherwise. My figures relate to the centre of each buffer. Many thanks. David G Edited By David Gosden on 23/05/2016 20:11:29 Edited By David Gosden on 23/05/2016 20:13:59 |
Thread: Motors for 5 inch gauge loco |
06/05/2016 12:36:35 |
Traction Motor Update I obtained via Ebay an old golf trolley - it works - new battery and electronics ok but an iffy armature bearing. 12v brush type motor about 150watts which should do all I need. Bearing fault sorted and motor now good. £20 can't be bad so progress is being made. 6 driving wheels, turned horn blocks c/w bearings done and frames underway so should have and rolling chassis in a month or so. Another update IDC David G Edited By David Gosden on 06/05/2016 12:37:36 |
Thread: D C Stirling/Hot Air Engine - Burner |
06/05/2016 12:28:49 |
Thanks Andy - that would be useful. If you want my email then do get back to me. Regards, David |
Thread: Motors for 5 inch gauge loco |
09/10/2015 12:44:51 |
Thanks fellas....This is rapidly turning into a Traction Motor thread...which cannot be all bad I'm following all the ideas up and with info from others the idea of a motor and control from a Hillbilly golf trolley plus a few calculations this looks like the route to go down. As a retired electronics engineer the tech stuff is ok.. but it helps to have input and experiences added by others. Thank God for ME and the Internet..magic! I have a trolley possibility..why are they always at the other end of the country? More to come soon.
David G |
07/10/2015 16:14:48 |
Two good and interesting replies... thanks! More research reveals a Hillbilly golf trolley 12v motor power rating is 180 or 204 watts depending on which one you go for. Considering Neil notes that his loco has just one 80w motor and runs ok gives hope that anything twice the wattage should perform ok. I have put out a search for one on the local Freecycle website and hopeful a scrap trolley with ok electrics will appear so I can run some tests. The real idea is to build a ground level track about 60 feet long for a family celebration next year to celebrate our 720th year. The kids will hopefully remember the event and the old guy who let them drive his train ..That's me! Any further info will be more than welcome..update and progress reports will follow.
Once again....ta muchly David G
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06/10/2015 16:59:22 |
I am at the design stage of building a small loco based on the frames of an 08 shunter for the 0-6-0 or a FC Hibberd 'Planet' for an 0-4-0. The final build will probably be a 'scratch build'. I do not envisage needing power enough to pull more than 2 people and am considering 24v and 12v motors. The preference is for 12v which is what Maxitrack use but their description is confusing noting they use 2 x 12 v 60w motors on each axle. Golf trolley motors are 12v and about 120 watts, also readily available from scrap trolleys or even cheapies on Ebay. The question therefore is will 120 watts be sufficient? Has anyone tried using one or more of these motors? Ta Muchly - David G |
Thread: Making a paper scale |
22/08/2015 11:28:42 |
CAD DraftSight is free but beware, the one found does not work on Windows XP. However older versions are as available as per my post in the CAD forum as follows..... 'I checked DraftSight but the current version does not work with Windows XP. However anyone wanting the XP or any other version can search http://download.cnet.com/windows/cad-software/ There is a dropdown list of many versions, sortable by operating system and variant - very handy! The XP download is 117MB and it is the 2013 version of DraftSight. When installed it works sweetly.' David G |
Thread: Software for laser profile cutting |
12/08/2015 10:21:15 |
Thanks for all the info. I checked DraftSight but the current version does not work with Windows XP. However anyone wanting the XP or any other version can search http://download.cnet.com/windows/cad-software/ There is a dropdown list of many versions, sortable by operating system and variant - very handy! The XP download is 117MB and it is the 2013 version of DraftSight. When installed it works sweetly. David G |
10/08/2015 13:14:30 |
I am working towards building a loco - probably a 5" 0-6-0 diesel shunter and am considering having the frames laser cut. I intend to put this work out to a firm. I usually scratch build straight out of my head 'as I go' or work off sketches on the backs of old envelopes in the best tradition but think I'll do some 'proper' drawings for this project. Will someone kindly advise which CAD software format is used for machine cutting and is fairly easy to use. It would be useful if drawings can be output in pdf format too. Thanks in anticipation. David G |
Thread: D C Stirling/Hot Air Engine - Burner |
24/04/2015 09:26:48 |
Ian, thanks. Not heard of that one so will give it a try. I guess few others know about it too. I posted to a few other sites and am hoping for a drawing/sketch with dimensions of an original burner. A photo already posted looks promising. It appears there have been more than one type of spirit burner of the thin tray type which could be due to developmental issues. I'll post back with more info in due course. David G |
22/04/2015 17:33:41 |
Another quick look at the USA version on a website shows what appears to be a deeper base casting with a small removable round burner which has a wick. It has no handle but there are photos of one with a small handle on other sites. The plot thickens. David G |
22/04/2015 17:15:26 |
Thanks folks. The objective is to make a replica of the original burner as this is a restoration project. Indeed, it is a thin flat box with a wick at one end in some sort of holder. My replica is based on photographs and is about the correct size but there is insufficient detail in the photographs to establish exact detail. The difficulty is to get a correct burn without flaring and overspill of meths despite having the tiny reservoir only half filled. A version of the D C engine was sold in the USA using a sort of tea light but this has a different cast base. Davies Charlton on the Isle of Man made the famous DC diesel engines for model aircraft and were quality engineers so I have no doubt that the British version of the hot air engine worked well with the burner supplied. A quick google will produce several photos, some of the engines being working.
David G
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22/04/2015 10:43:31 |
I recently purchased a D C Hot Air engine but less the spirit (meths) burner. Restoration of the engine is now complete. I can only find rather poor quality photos of a burner which lack details. Making one from scratch with such little info has not been successful, so am wondering if anyone can help with a drawing or helpful info. Ta Muchly! David G |
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