stevep
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Post by stevep on Aug 19, 2021 9:38:02 GMT
With passenger cars, which are carrying more weight, some kind of bearing or easy-slip arrangement is a must. It allows the bogie to follow the track more easily, leading to reduced track wear and fewer derailments. The same benefits will apply to your loco. In an ideal world, the arrangement would allow a front-to-rear rock, to allow the bogie to follow track undulations. Wilf I agree with the theory Wilf, it makes sense, but most of our passenger trucks (of various ages and pedigree) just use a greased pin. I'm not saying it's right, but it's rife. While they may use a greased pin, normally the pin is attached to a stretcher on the truck frame, and works in a hole in a stretcher on the bogie. The two stretchers produce the stabilising effect that is wanted. On the drawings I have for 'Lorna Doone', the pin works in a block which can slide in a slot in the bogie stretcher, but there are also some 'outriders' on the engine, in line with the pivot point, which rest on brackets coming from the bogie frames. That stops the excessive side-to-side rock that one wants to prevent, but allows the fore-and-aft rock that Wilf mentions.
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uuu
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your message here...
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Post by uuu on Aug 19, 2021 9:46:08 GMT
For a long while the IWMES ones had Teflon pads - they weren't very good - no compensating effect, and not slippery enough. I think they may now have ball bearings on edge.
Wilf
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JonL
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WWSME (Wiltshire)
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Post by JonL on Aug 19, 2021 9:55:00 GMT
One thing that may be causal to the design of our trucks is the simplicity of our track; a small oval with gentle curves.
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lesstoneuk
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Retired Omnibus navigation & velocity adjustment technician
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Post by lesstoneuk on Aug 19, 2021 14:42:50 GMT
I have to bear in mind that all of the weight in the body... Batteries, control gear, horn, cables, will all be above the top of the bogies. I can't get away from that. Class 76 bogies had a short coupling between them and were made from plate.
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dscott
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Post by dscott on Aug 29, 2021 22:41:37 GMT
AND We make it into Engineering in Miniature!!
Yes it was a wonderful Weekend of running riding and even some passenger hauling on faded battery's on the Sunday. I had a lovely chat with John Arrowsmith and he took some photos of the beast.
I am still coming down from our 9 laps of Maidstone behind our Drill Driver loco and the smile on Martin Evans face as we kept passing. No it does not hold up other trains.
David and Lily.
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lesstoneuk
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Retired Omnibus navigation & velocity adjustment technician
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Post by lesstoneuk on Nov 5, 2021 6:49:07 GMT
Sorry, I apologise for not keeping you up to date on my class 76 build. I've got the wheels, axles, axleboxes, stretchers, angle supports, sides, buffer beams together. Once my retirement happens next Monday, I'll begin building the bogies. I've decided on the colour scheme.... BR Blue with ferret n dartboard. I wanted to ask a question but it's gone completely out of my head.... Damn old age
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lesstoneuk
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Post by lesstoneuk on Nov 5, 2021 8:51:56 GMT
I remember now.... Does anyone have any experience with the Chinese mini-welding units? . I need some welding done but only a small amount. Buying a Chinese one is cheaper than hiring a larger one.
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JonL
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WWSME (Wiltshire)
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Post by JonL on Nov 10, 2021 21:21:12 GMT
Does anyone at your local club have one that you could borrow? Seems a shame to buy for a small task.
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lesstoneuk
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Post by lesstoneuk on Nov 11, 2021 2:58:24 GMT
As it turned out, the wife also needs welding done on some car ramps to lift the front end of the campervan. So I bought a Chinese one for 40 sovs. Rods have arrived, need a tidy mask as the included one is rubbish and the deslagging hammer is crap. Since it's all arrived, it's rained most days.... Rule No1 - don't weld indoors..... Oh, you did hear me right. Since I had covid and was in hospital for 8 weeks last year, she's been more independent. She actually changed the carb and thermostat on the Fiat Campervan and has done most of the install of a diesel heater.
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Post by Jo on Nov 11, 2021 18:09:21 GMT
I'm pleased to hear she is realising her full potential Women are much more capable than some men give them credit for Jo
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lesstoneuk
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Post by lesstoneuk on Nov 12, 2021 1:36:03 GMT
I'm pleased to hear she is realising her full potential Women are much more capable than some men give them credit for Jo I wholeheartedly agree. I'm practally minded but she has way more common sense than me.
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Post by andyhigham on Nov 12, 2021 23:04:47 GMT
A woman's greatest asset is the ability to let a man do a job she is easily capable of completing herself
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lesstoneuk
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Retired Omnibus navigation & velocity adjustment technician
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Post by lesstoneuk on Dec 18, 2021 15:51:17 GMT
Yes, I fully agree with that. 30+ years ago, she taught me how to make shortcrust pastry.... That was near enough the last time she made any... Lol Anyway back to the 76, as its been a gorgeous day today, I managed to get outside to shape the body. It was messy to say the least. Thanks to Dave, I now have an excellent set of pics that gives the true positioning of all the grills and windows on no1 and no2 sides. I'd like to publicly thank him, he's saved my bacon from the know-it-all. One question, what's everyone's views on naming locos other than the ones allocated. flic.kr/p/2mRsPArflic.kr/p/2mRpABE
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Post by fubar123 on Dec 18, 2021 17:17:56 GMT
Just my opinion You name it what ever you like , You built it !
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JonL
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WWSME (Wiltshire)
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Post by JonL on Dec 18, 2021 18:04:27 GMT
You put all the effort in, you earned the right to call it what you like.
I've named my Britannia after my grandfather and my William after my father.
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lesstoneuk
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Retired Omnibus navigation & velocity adjustment technician
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Post by lesstoneuk on Dec 18, 2021 23:58:43 GMT
Glad you think like that. I'm thinking that maybe the whole class was named, still keeping with the "gods" theme. I like "Cassiopeia" or maybe "Freyr" or "Anubis" or "Neptune" or "Epona". Each one being a God from Greek, Norse, Egyptian, Roman and Celtic mythology respectively.
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JonL
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Post by JonL on Dec 19, 2021 21:45:31 GMT
I like the Norse mythology link, a really intriguing religion/
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dscott
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Post by dscott on Dec 20, 2021 2:21:20 GMT
Just working on the power transmission for the latest based upon a mowing machine motor. Calling it B S 450 of course. A theme sets in with the building company currently doing some brickwork. Bodgeit and Scarper of course. Featuring two BO BO power bogies which are to be belt drive. A solid fixed to the chassis at the back so the thing does not tip over but swivels. We are up to 7 1/4" so feet will be accommodated. The front has to swivel in 2 directions. 8 wheel drive to make it interesting. The Drill Driver has a 3 point suspension and works superbly. Even if I sit on it. Pondering an electric start for the 450 and should I build a gearbox?
David and Lily.
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lesstoneuk
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Post by lesstoneuk on Dec 20, 2021 4:21:24 GMT
I like the Norse mythology link, a really intriguing religion/ Seeing as Norse is a major factor in modern day English... Tuesday, Wednesday, Thursday, Friday for example, I'm making two sets of plates at the moment out of wood. I want to see which of two looks best before having a pair cast. I was thinking Cassiopeia for a while but Freyr is growing on me. I'm using laser cut uppercase letters on 3mm ply backing with 3mm sq obeche raised side walls. They'll do just fine till my final decision
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lesstoneuk
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Retired Omnibus navigation & velocity adjustment technician
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Post by lesstoneuk on Feb 18, 2022 3:34:13 GMT
Well, I've bitten the bullet and ordered my nameplates. I bought some laser cut letters and made some dummy nameplates from 3mm ply. Painted red and silver, look damn smart too. First made was "CASSIOPEIA" then "FREYR" followed by "FREYJA", "SANS PAREIL", "LANCASHIRE WITCH" and finally "OWAIN GLYNDWR". The final choice after much deliberation and placing each plate in situ to see how it looks and general "rightness" was by a long chalk......insert drumroll and over long pause.... "LANCASHIRE WITCH".
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