lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on May 21, 2021 8:17:12 GMT
Well, that's the plywood for the bodywork designed. Just need a laser cutter that cuts plywood now. Input here would be appreciated from any with experience flic.kr/ps/3W1Z8e
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kipford
Statesman
Building a Don Young 5" Gauge Aspinall Class 27
Posts: 566
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Post by kipford on May 22, 2021 21:21:37 GMT
Tim Horn who laser cuts base boards for model railway layouts in the smaller scales. He has done bespoke base boards and stock boxes for me and is very reasonably priced.
Contact him here:
tim@timhorn.co.uk
Dave
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Jun 7, 2021 4:40:18 GMT
OK, I'm probably going to make people gasp but I'd like to pass an idea past you. As the spoked wheels are a promenant feature of my Class 76, yet are mostly hidden. Could I have them laser cut from 16mm plate and turn them as normal. It's just an idea.
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Post by andyhigham on Jun 7, 2021 7:10:03 GMT
I have had the same idea in the past. Waterjet cutting would be better as the hard skin in the spokes would be a bugger to file. Water jet cut wheel blanks would be orders of magnitude better than cast iron
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Jun 7, 2021 15:18:39 GMT
Tim Horn who laser cuts base boards for model railway layouts in the smaller scales. He has done bespoke base boards and stock boxes for me and is very reasonably priced. Contact him here: tim@timhorn.co.uk Dave I've just this minute ordered the bodywork parts off of Tim. Many thanks for the link. I owe you bigtime
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Post by ejparrott on Jun 7, 2021 16:32:34 GMT
Yes. I've just laser cut some for a customer. Stress relieve after cutting.
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Gary L
Elder Statesman
Posts: 1,208
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Post by Gary L on Jun 7, 2021 18:37:30 GMT
I have had the same idea in the past. Waterjet cutting would be better as the hard skin in the spokes would be a bugger to file. Water jet cut wheel blanks would be orders of magnitude better than cast iron I’ve just been filing and drilling some 4mm steel from MEL this very morning. The skin is very thin; a single stroke of the file gets under it. It is less of a problem than the skin on black MS, or cast iron for that matter, which can be really bad if you are unlucky. I remember using some laser cut steel several years back and the skin seemed (subjectively) much more formidable. Is this my bad memory, or has the process been improved? Or do you just get thinner skins on thinner material? Water jet cutting has no skin at all, obviously, but it seems to come at a premium price (unless I’ve been unlucky.) What are the thickness limits for either process in steel? That might affect your choice, or your choice of supplier. Gary
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JonL
Elder Statesman
WWSME (Wiltshire)
Posts: 2,912
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Post by JonL on Jun 7, 2021 20:57:30 GMT
Once you get a mill you may find your drill press doesn't get used at all (I'm ashamed to say mine had a light coating of rust until I cleaned it up).
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twombo
Seasoned Member
Posts: 119
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Post by twombo on Jun 7, 2021 22:36:08 GMT
I’ve been on some frames for a Swindon Bogie in 1732” from MEL. 5mm and they cut very nicely. A fresh 5/16. A fresh 4 flute endmill cuts like butter! The lack of mill scale is wonderfull! One “ swipe with a medium coarse file and straight to draw filing! For profiling Rod ends, a 3/8 India stone in my Dremel, using a Mini Router attachment gives a perfectly square edge face. Around the oilers 1/8” is just 2 “nips” and onward to the next!
Mick
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dscott
Elder Statesman
Posts: 2,438
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Post by dscott on Jun 8, 2021 0:42:20 GMT
Once you get a mill you may find your drill press doesn't get used at all (I'm ashamed to say mine had a light coating of rust until I cleaned it up). Expect when you are doing over 100 holes every day over several days using a drill press and the Dore Westbury mill. Yes set ups attaching 2 3mm plates to a 15mm thick bar in the middle with rivet detail. M6 bolts holding a bar in the middle. X 4 of course. Photos to follow. David and Lily.
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Post by davewoo on Jun 8, 2021 6:14:27 GMT
Some years ago I was asked to rough machine some water jet cut wheels for a 5" model of Hardwicke that a chap was building to his own design, the cutting was done by SCISS in Staplehurst. Hardwicke has very fine square section spokes and castings had proved unsatisfactory. The water jetting on the first test wheel was just about perfect, sadly the builder died suddenly and I have no idea what happened to the project. The completed tender was to an excellent standard, I often wonder where it ended up. So the idea of laser or water cutting the wheels for your loco sounds lika a good idea. Dave
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Jun 15, 2021 13:39:23 GMT
Tim Horn who laser cuts base boards for model railway layouts in the smaller scales. He has done bespoke base boards and stock boxes for me and is very reasonably priced. Contact him here: tim@timhorn.co.uk Dave I've just this minute ordered the bodywork parts off of Tim. Many thanks for the link. I owe you bigtime I have to credit Tim Horn with outstanding work. The body kit arrived this morning and it was exceptionally well wrapped. It took me a good five minutes to get the parts out. Tim does quality work, I'd recommend him to anyone.
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Jun 24, 2021 18:37:41 GMT
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kipford
Statesman
Building a Don Young 5" Gauge Aspinall Class 27
Posts: 566
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Post by kipford on Jun 24, 2021 19:03:20 GMT
Les Looks good, exactly how I would have done it. Dave
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Jun 24, 2021 19:21:04 GMT
Les Looks good, exactly how I would have done it. Dave I can't believe just how light the body is. I do have a question to those that use blue modelling foam. What izs the best way to seal it.... PVA wash, papier mache orr fibre glass?
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Aug 16, 2021 6:11:49 GMT
Good morning to you all, I have a question. Regarding the lateral pivoting on the bogie, do I fit a large pin for it to pivot around or can I fit a large thrust bearing. I'm looking at a 4" diameter bearing at the moment that's designed for a lazy susan
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JonL
Elder Statesman
WWSME (Wiltshire)
Posts: 2,912
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Post by JonL on Aug 19, 2021 5:30:42 GMT
I suspect the pin would be less effort; there are not many gains to be had by using a thrust bearing in my opinion.
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lesstoneuk
Part of the e-furniture
Retired Omnibus navigation & velocity adjustment technician
Posts: 373
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Post by lesstoneuk on Aug 19, 2021 7:10:06 GMT
I suspect the pin would be less effort; there are not many gains to be had by using a thrust bearing in my opinion. I was thinking that a lazy Susan bearing would eliminate any tendency for the body to tilt. I'd still use a pin for the transference of power.
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uuu
Elder Statesman
your message here...
Posts: 2,816
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Post by uuu on Aug 19, 2021 9:16:12 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
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JonL
Elder Statesman
WWSME (Wiltshire)
Posts: 2,912
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Post by JonL on Aug 19, 2021 9:24:34 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.
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