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Post by thefodenman on Apr 10, 2020 8:48:01 GMT
Morning all hope you are all keeping safe?
I am looking for a design for a locomotive turnover rig. Any idea if one has been published in Engineering In miniature or Model Engineer? I tried to search without luck?
Stay safe in the workshop!!
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Post by Roger on Apr 10, 2020 9:01:47 GMT
Here's a link to the album showing my Turning Frame if you're looking for something a bit over the top. I wanted something that would not only hold the locomotive safely at any angle, but could also adjust the height so I could pick it up from the bench. I also wanted to be able to lift the whole arrangement with the crane. Anyway, there might be some ideas there that are useful. I have the drawings if you want them. |
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Post by andyhigham on Apr 10, 2020 9:20:24 GMT
The simple dirty version is two pieces of board cut to say an octagon shape. A couple of holes for the buffers to poke through and a couple of lengths of threaded bar with nuts. The loco is sandwiched between them and can be turned to rest on any of the 8 faces
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uuu
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Post by uuu on Apr 10, 2020 10:29:23 GMT
Here's a design from an exhibition, using two scissor jacks: Scissor jack turning rig.For a finished loco, I have seen a carrying frame rather like you'd have a petrol generator in. So once the loco was inside it could be upended or inverted. Wilf |
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Post by simplyloco on Apr 10, 2020 10:32:20 GMT
My stirling single is sitting on mine right now if you want to take a look at my thread?
John
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stevep
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Post by stevep on Apr 10, 2020 14:24:13 GMT
One thing that you may want to bear in mind is, according to a number of posts placed on here in recent weeks, some locomotives do not have angles to secure the rear of the boiler to the frames. If your engine is one of those, and you turned it over, and the boiler is only secured by the smokebox, it could do some serious damage to the smokebox, boiler or both.
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barlowworks
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Post by barlowworks on Apr 10, 2020 15:50:15 GMT
When I get round to it I will be going for the scissor jack version bolted to my lifting platform but if you fancy something a bit more exotic on the YouTube channel No23mk2 he makes a very nice one for his 9F build.
Mike
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Post by Roger on Apr 10, 2020 16:49:49 GMT
One thing that you may want to bear in mind is, according to a number of posts placed on here in recent weeks, some locomotives do not have angles to secure the rear of the boiler to the frames. If your engine is one of those, and you turned it over, and the boiler is only secured by the smokebox, it could do some serious damage to the smokebox, boiler or both. Good point. I don't anticipate turning the finished loco with boiler in situ more than 90 degrees at the absolute maximum, even though there are clamps. I think you can probably access everything without turning it completely upside down. |
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Post by andyhigham on Apr 10, 2020 18:13:26 GMT
Something else to watch when turning a loco. Lubricator tanks, a small amount of steam oil makes a reet mess. I think the Hunslet would be a problem to invert, the chimney is around a foot tall  phpThumb_generated_thumbnail by Sigma Projects, on Flickr |
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Post by dhawker on Apr 13, 2020 21:05:48 GMT
suggest you talk to Malcolm High at ModelEngineersLaser, he does a kit for a very good one, i use if for 5" Jubilee and 9F, lifts, turns over, and locks in any position.
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Post by Jock McFarlane on Apr 13, 2020 21:20:42 GMT
The simple dirty version is two pieces of board cut to say an octagon shape. A couple of holes for the buffers to poke through and a couple of lengths of threaded bar with nuts. The loco is sandwiched between them and can be turned to rest on any of the 8 faces This is actually a very good idea. It is simple and very cheap. I use it to turn over a 7 & 1/4" Pacific on 2 hexagonal boards. You need a person at each end to turn it over and a means of lifting each end so you can bolt it to the boards. |
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Post by andyhigham on Apr 16, 2020 18:28:54 GMT
I've (band)sawn up some lengths of unistrut to make a frame for painting the Hunslet chassis
It's just an I shaped base (or H shaped if you stand beside it) lay on the floor with a couple of 1M high verticals. The chassis will be fitted with a couple of bolts through the coupling holes.
This is just a temporary stand, no way of locking the position or raising/lowering it.
Unistrut is amazing stuff, adult Meccano
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Post by Roger on Apr 16, 2020 18:58:24 GMT
I knew I'd be using it for years during the construction of the Locomotive, so it seemed worthwhile making something that could be used not only during the early stages of construction, where the simplest of arrangements will do, to the completion when getting it on and off the stand could be tricky.
If you can walk all round the bench, that makes life much easier, but I don't have that luxury. For me it was essential to be able to turn it round on the bench, and also for getting the locomotive onto the loading ramp for the car.
So it depends on your situation, what you want it to do, and whether you think it's worth the time and effort to achieve those goals.
It would appear that I'm in the minority for thinking this is worth spending a fair bit of time on, but it's made my life so much easier.
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Post by andyhigham on Apr 16, 2020 19:15:42 GMT
This could be adapted in the future, for now I need something to give me 360 degree accessibility
I have made it floor standing and the loco buffer beams will be 1M off the ground. If I fit castors I could position it above a bench to load the loco into it. Having around 900mm of clearance I should be able to invert the loco without removing the chimney
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JonL
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Post by JonL on Apr 16, 2020 19:45:31 GMT
The simple dirty version is two pieces of board cut to say an octagon shape. A couple of holes for the buffers to poke through and a couple of lengths of threaded bar with nuts. The loco is sandwiched between them and can be turned to rest on any of the 8 faces Ooooh, I'm doing that. |
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Post by andyhigham on Apr 17, 2020 12:27:03 GMT
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Post by Roger on Apr 17, 2020 14:05:22 GMT
This is fine for a building frame when it's just a chassis, but it will be very top heavy and want to spin round if you put a boiler on top. Ideally, you need to be able to move the pivot point to the centre of gravity of the build at any stage. |
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Post by andyhigham on Apr 17, 2020 14:23:06 GMT
Roger, as I said yesterday this is just for painting. The idea is to to be cheap and cheerful and give 360 degree access in all planes, the uprights are only 41mm wide. Once the loco comes together something more substantial and elaborate can be considered
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Post by Roger on Apr 17, 2020 16:37:45 GMT
Roger, as I said yesterday this is just for painting. The idea is to to be cheap and cheerful and give 360 degree access in all planes, the uprights are only 41mm wide. Once the loco comes together something more substantial and elaborate can be considered Sorry Andy, I must have missed that. I assumed we were still on the topic of turnover rigs. |
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Post by thefodenman on Apr 18, 2020 9:34:04 GMT
Here's a design from an exhibition, using two scissor jacks: Scissor jack turning rig.For a finished loco, I have seen a carrying frame rather like you'd have a petrol generator in. So once the loco was inside it could be upended or inverted. Wilf Hi ,yes I like this idea, variable height by lifting. |
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