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Frame material for Tich

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David Clark 101/03/2010 09:14:13
3357 forum posts
112 photos
10 articles
Hi There
The chances of me getting some blued steel up here in Scotland are about zero.
I have some 3 inch x 1/8 inch gauge plate bought for an old project
Would this be suitable for Tich mainframes or would it be too rigid?
Having won a set of cylinders on Ebay last night, it is about time I got this project on the move.
regards David
DMB01/03/2010 09:27:45
1054 forum posts
Hi David,
Wot do u mean, "blued steel?"
My guess is high-carbon known as `gaugeplate.`
As there are only 2 axles and short length, I would think gauge plate would work but very expensive material for such use. I certainly wouldn`t consider it for say, "Nigel Gresley" or any other long-framed multi-driver loco, due to stiffness of steel. It would not flex and on tight curves with very small cleances on a well made new loco., I would think derailments could be a possibility.
Thats what I think but perhaps someone with more experience can throw in their "2pennorth."
PS what a glorious sunny morning down here in Brighton.
Circlip01/03/2010 13:03:19
1218 forum posts
No scrapyards in Scotland David??  Commercial vehicle chassis offer various thicknesses of steel.
  Regards  Ian.
David Clark 101/03/2010 14:20:33
3357 forum posts
112 photos
10 articles
Hi There
No scrap yards  where I am.
There is nothing where I am.
regards David
Redpiperbob01/03/2010 14:29:25
87 forum posts
41 photos
Hi David try
B&M steel
Inverness 01463232905
David Clark 101/03/2010 14:41:38
3357 forum posts
112 photos
10 articles
Hi there
Will make a note of them but still
a 250 mile round trip.
regards David
Gordon W01/03/2010 15:07:52
2011 forum posts
David, I live in N Scot., nowhere near you tho'. But:- try ship/boat repair boys, I know there are some near you, usually more helpful than the scrappys as well.
Tony Martyr04/03/2010 17:44:44
198 forum posts
37 photos
I can't see how frames can be 'too rigid' since the whole point of the frame walls and spacers is intended to produce a rigid structure that is able to deal with the various forces imposed on it. The flexibility that allows for cornering and track irregularities comes from the hornblocks and bogies etc surely?
The first models I was involved with many years ago as a 'helper' both had frames made from gauge plate as the owner worker in a toolroom and it was 'available' 

Edited By Tony Martyr on 04/03/2010 17:45:32

Baz04/03/2010 19:06:42
524 forum posts
2 photos
Hi David,
   Nothing at all wrong with using gauge plate for frames, I use it in preference to black or bright steel as it does not spring when cut. The only disadvantage is the price but I think it is well worth it for nice flat straight material. Frames should be rigid, look at all the stretchers etc used to brace them, I agree totally with Tony on this point.
David Clark 104/03/2010 19:21:46
3357 forum posts
112 photos
10 articles
Hi Baz
Thanks for that.
Shall cut them slightly overlength and work from there.
Regards David
calder percival 104/03/2010 19:41:30
19 forum posts
1 photos
blued steel was a type of plate produced in production in the days of L.B.S.C the nearest you will get to it now is sheared plate out of an 8 by 4sheet and a local fabrication shop would give you it for coppers. Gauge plate is fine but too expensive to waste on frames after all they are only to hold the cylinders and wheels in place and nothing fancy is needed black strip is also fine and does not distort bright will however if you loosely mark out the frames and then cut out the openings and then turn then mark them out properly they will not move again . It is the locked up energy from when the material was produced that escapes and distorts when you cut the material.
Hope that helps calder
David Clark 104/03/2010 20:00:56
3357 forum posts
112 photos
10 articles
Hi Calder
Price was not a problem, I have some suitable gauge plate in stock bought a few years ago because it was cheap at the time.
regards David
camper05/03/2010 09:58:19
12 forum posts
gauge plate for frames, luxury bought a cheapo cuts all saw from aldi turns a old chassis leg into valuable raw material in seconds 6mm ms without complaint wonderful for the impecunious ps chip fat is great in ml4 headstock bearings and the workshop heater

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