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Post by ejparrott on Jul 24, 2014 10:20:19 GMT
Are you not putting the other slot in then?
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Post by vulcanbomber on Jul 24, 2014 17:05:19 GMT
Are you not putting the other slot in then? I s'pose i'll have to now you've told the world.......
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Post by Jim on Jul 24, 2014 21:35:40 GMT
"I s'pose i'll have to now you've told the world......." Yep, there's always someone who asks the damn question you just didn't want asked. Jim
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Post by vulcanbomber on Jul 24, 2014 21:42:21 GMT
To be fair, I missed it off my drawings by accident, Ed's spotted it so i'll sort it out.
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Post by vulcanbomber on Aug 13, 2014 21:18:53 GMT
Here we go, another bit done!!!!!! I've taken a fair few pics of the next bits i've made to try and show my method to you all, some might find it handy, some might not. There the Tenders Brake Hangers, just so we know. These actually started life as round bar, so onto the Colchester to turn up some "discs" with a 6mm hole in. There's a neat little trick in there to in that instead of using soft jaws, I've turned a Diameter on the junk end of the bar, has the same effect as soft jaws but doesn't need soft jaws, that's about 8mm in the chuck I'm holding on. I don't like waste. Obviously the back ends faced up and this is the finished disc... Now, off to the turret mill...... Lump of "junk" in the vice.... Stick a 6mm tapped hole in it and put one (or in my case 4) discs on the fixture with a 6mm cap head through to hold them down! Center drill, Drill and Ream the holes and add 4, 4mm cap heads (the fixture is pre drilled and tapped). Center bolt out. Load up a 6mm cutter and start milling the profile. And a few minutes later. And a few minutes after that when the bolts get removed. The finished artical.. I've made loads of these so if anyone is building a BR1 tender let me know.... My next model will be having a BR1 tender so thats why i've done it. I've also been working on the next frame stretcher this week but thats not that exciting just at the minute.. Thanks for looking.
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Post by Jim on Aug 13, 2014 22:42:28 GMT
Thanks for sharing! That's a very interesting method and I'm a bit peeved that I've already made my hangers for Boadicea's tender using a much more laborious method. As for thanking us for looking, I think it's a privilege to be able to see your methods. Great work and please keep the posts coming. Jim.
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Post by vulcanbomber on Aug 15, 2014 20:32:17 GMT
Well, we've gone from 1 extreme to the other, As I mentioned in the previous update i've also been working on one of the Stretchers.... And i've managed 2 photographs of it in the last 3 evenings....... Theres alot to still be done on these and they also need there ends making and Soldering on... This would look slightly different BTW if you wanted a Crosti boiler on your 9F. Thanks for looking.
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Post by Jim on Aug 16, 2014 0:01:27 GMT
Thank you for posting the photos because they give us all an appreciation of what can be achieved with care and thought. Am I right in assuming you didn't use CNC? Jim
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Post by vulcanbomber on Aug 16, 2014 6:55:17 GMT
i've used CNC for milling the pockets out, just for speed and repeatability, theres nothing there that cant be done by winding handles though.
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Post by Doug on Aug 16, 2014 15:51:00 GMT
i've used CNC for milling the pockets out, just for speed amd repeatability, theres nothing there that camt be done by winding handles though. Sacrebleu Nowt wrong with using a bit of "dark magic" to build your loco
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Post by vulcanbomber on Oct 9, 2014 21:12:04 GMT
At last some more progress on the machining front. (I have been drawing in my spare time, another trip to York now required) The stretcher i've been working on is currently with my Dad, for some very small holes to be drilled.. trouble is he's rather busy at the minute. Any way, tonight i've made a start on the next stretcher, this one sits between the Leading and Leading Intermediate axles at the bottom of the frames and carries the spring hangers, i'll be adding these later on. Now I said at the start I want to do better than Les Warnett did... Well, this stretcher he missed out, making a casting for the spring hangers, which you'll see in the last picture. Hopefully i'll be able to crack on a bit more with this next week. I've also roughly blocked out the next stretcher and stress relieved it ready to do some work on when time allows. Thats all for now.
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Post by Jim on Oct 9, 2014 23:22:59 GMT
You're making great progress there. I thought the Britannia was big enough but a 9F will be huge and great to see on the track, well done. Jim.
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Post by ejparrott on Oct 10, 2014 8:28:08 GMT
I'm looking forward to it Our Chairman will be putting him down for public running every month so he doesn't have to do it any more!
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Post by Rob on Oct 10, 2014 10:16:59 GMT
Looking good, I look forward to following the progress on this thread.
As I've mentioned in another thread recently, I really fancy a 7.25" 9F next, though I'm not sure if that would exceed my capacity!
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Post by vulcanbomber on Oct 10, 2014 19:25:22 GMT
I'm looking forward to it Our Chairman will be putting him down for public running every month so he doesn't have to do it any more! That might depend on if he gets dragged backwards or not.......
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Post by vulcanbomber on Oct 22, 2014 20:27:09 GMT
I've managed to make some more progress on the latest stretcher i've been working on. First thing I did was to mill the final shape to this cutout in the front end. Then roughed out 2 pockets in the other side of the stretcher. Before removing the bulk of the rads in the corners, these pockets arn't finished but they needed doing now to make the next bit easier. And that leaves me with this. These are now going on a (hopefully short) holiday to Ed's house to machine some angles... I didnt want to do this at work because it requires the head tipping on the machine and because I only have a couple of hours on the odd evening to do this.... its rather pushing it to tip the head, do the machining and then put it back ready for John first thing next day. Now, Ed's also played a blinder for me at the Midland show.... He collected this from Malcolm for me.. And with the Buffers resting on top. Hopefully there will be another update soon. Thanks for looking.
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Post by vulcanbomber on Oct 30, 2014 23:07:22 GMT
Well, managed a little bit more this evening, i have started on another stretcher this one sits infront of the Leading axle and carries the pony truck pivot. I've only taken a couple of pictures: And this one is mostly for Roger's benefit, Roger you should be able to see the tool path that the Prototrak system comes up with for the milling of pockets, all i've told it is the 2 diagonal corners of the pocket and the machine figures out the rest for you. Thanks for looking.
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Post by vulcanbomber on Nov 7, 2014 18:47:16 GMT
I've managed a bit more progress this week... Spent Tuesday evening progressing the pony truck pivot stretcher, only taken the 1 picture: And Ed has managed to mill the required angles on the other stretcher i've been working on: And seen here on a copy of the works drawing. Thanks for looking.
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Post by Deleted on Nov 7, 2014 18:56:06 GMT
that's looking very nice....are the angles for something to seat in or is it for extra support, acting like a web perhaps? looking very good... Pete
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Post by vulcanbomber on Nov 7, 2014 19:00:20 GMT
that's looking very nice....are the angles for something to seat in or is it for extra support, acting like a web perhaps? looking very good... Pete its for some little gussets, theres going to be some milling away of the angles next, there will be a bit 2mm wide at either end of the longer bit you can see..... I left the middle in so it was nice and strong to mill it still.
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