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Post by Deleted on Nov 27, 2018 7:06:09 GMT
Morning Adam
Perhaps leave it to the customer to paint, some may not want paint, those that do perhaps pay a little extra? I'm not familiar with BR stuff, if painted all over then paint them after assembly although need to be careful not to clog up the threads too much in case the fitting needs taking apart for servicing at some point in the future?
Pete
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Post by Cro on Nov 27, 2018 8:31:02 GMT
Morning Adam Perhaps leave it to the customer to paint, some may not want paint, those that do perhaps pay a little extra? I'm not familiar with BR stuff, if painted all over then paint them after assembly although need to be careful not to clog up the threads too much in case the fitting needs taking apart for servicing at some point in the future? Pete Morning Pete, Typically these are fully black with a red handle and considering I want to oil them up, seal faces and fill with some form of oil I feel it best to deliver painted (they are paying enough!). I think doing it assembled would be best as it will give a clean finished look of the assembled unit really. I see your point on the threads and paint but if anything touching these in after assembly could risk more paint than desired. There are some ares that normally have to be assembled in a certain order to get the spindles in so I would have to consider leaving the spindles in all sealed and ready to go or part assembling it. I've just had someone ask me to quote for a 3 1/2" version for their Brit! That will be tiny but certainly going to look as it's something I could add to Grandads one day. Adam
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Post by Cro on Nov 30, 2018 20:29:04 GMT
Another update for don9f! I managed to get away from work on time today which meant after doing a few jobs I could get 45 minutes in the workshop and I decided that was the perfect time to start the Mk6 brake valve. Only the simple task of drilling the main bore, cutting the bottom seat and cutting thread for the gland nut. I also drilled and tapped the 4 M1 holes that hold the base cover on. All very tight in here and small parts to come on these. I have 6 in total to do, 5 Mk4 including 1 for myself, one for Mike in NZ for his Class 3, 3 for stock and Don's Mk6. Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Last photo shows the jig used to hold the castings for the first steps of machining. Untitled by Adam Cro, on Flickr Hopefully more progress on Sunday on this and the gearboxes. Adam
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Post by Deleted on Nov 30, 2018 20:35:03 GMT
looks interesting Adam..hope you get around to the LNER auto braking valve castings at some time.. I'm sure that there are plenty of LNER modelers out there...
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don9f
Statesman
Les Warnett 9F, Martin Evans “Jinty”, a part built “Austin 7” and now a part built Springbok B1.
Posts: 960
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Post by don9f on Nov 30, 2018 22:57:43 GMT
Hi Adam, great to see progress on the brake valves. Please keep posting photos if you can, I can appreciate the effort that’s going into producing such a small, complicated working valve!
Cheers Don
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Post by Cro on Dec 3, 2018 22:41:59 GMT
Spent a bit of time this evening looking at the 5" version of the gearbox as I want one for my 9f and I have so many people asking about it it seems silly not to look over it whilst I have the ideas in my head from the 7 1/4" version. It's a quickly thrown together assembly of the 3 main castings to see if: A) If I can cast 2 if not all 3 of these as one casting to avoid small fixings holding them together, on the larger one they already use 12ba but these would look far too big on the 5" version as seen in the photo. B) If I need to use fixings to hold areas together what can we get away with in both appearance and strength. 5inch by Adam Cro, on Flickr The larger nut is 12ba the small is M1, I will take a look at M1.2 as well. I know I can source M1/M1.2 stainless screws and nuts easily so thats not an issue. A good start I feel! Adam
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Post by Cro on Dec 27, 2018 9:29:37 GMT
Good Morning All, Hope you have all had a lovely Christmas and enjoyed all the good food! This year Jess and I hosted for the first time with both our parents coming for lunch - it was certainly eventful mainly because both Mums were heating up Christmas pudding and decided to leave the kitchen door open with said pudding on the edge of the worktop - raisins and dogs = big no no, luckily Jess is a vet so we popped into work to make the little git sick before going back to carry on with the presents. Safe to say dog was pretty calm for the rest of the day. Anyway! Back to the workshop today but I thought I'd give a quick update of what I got up to last Friday/Saturday/Monday with my time off work. With a bit of inspiration from Bob and some laser cut parts arriving from MEL I decided to get on with the 9f Cab floor. As you'll notice its rather similar to Bobs cab floor, funny that, but his is just a bit further on (where mine will hopefully be later on today). Bob has been very helpful being ahead of me as one area I had struggled with on the drawings he was able to clear up for me, hopefully we will be able to work on the cab side drawings together as I'm struggling with the quality of the drawing mixed with the mass of unclear information. Sadly the draftsmen didn't do these drawings component by component they have the whole cab floor drawn as one and likewise with the cab itself and even having very high res. files of the drawings it is very difficult to pull out the dimensions you want - if they are even there at all! Moving on, back when I started drawing this up I also had some formers made up by Roger to aid in the folding of certain parts, there is the possible aim of turning this into a kit one day if I wanted so worth investing in the tooling now and it helps my build too, and here are a few of the formers and how the parts turned out. Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr These are handed so the former was machined as such to allow both to be done, they are a perfect fit with the laser cut parts and using the hide mallet clamped in the vice with a support piece they taken seconds to form - easy! I also had one made for the injector water valve bracket, I have designed this in to halves to be formed, trimmed and solded together with the top part of the bracket. It worked quite well but I may make a few adjustments. I also forgot the two halves didn't have the same pitch holes so I will modify this former like the first to do both sides. Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Back to the structure itself, now I had the rear support webs formed I had a big heat up to attach these to the existing frame and the webs, all went quite well except a small warp in the centre of the plate, more support would help going forward and proper jigging but I have got it flat now so all is good. Untitled by Adam Cro, on Flickr I also spent Saturday making up the pedestal support parts which is the area Bob has helped me with and I am now making up the angles and outer cab floor support parts before they are all fitted. Here is how things look at the moment. Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr As you'll see here things look a bit low compared to the boiler, I don't know why this is at the moment but I am assuming it is down to the Winson version of a Warnett boiler so I may have to lift the whole floor, I am waiting till I have drawn the cab sides and will asses what needs doing then. I think I can re-make the drag beam plate and lift the whole lot by 1/4" or so and modify the cab sides to keep the running boards at the right height. Hopefully I can draw the cab sides up soon enough to work this all out. Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr The final job once all of these parts are silver soldered together will be to soft solder the chequer plate onto the rear of the cab, I am debating how best to do this to get everything nice and flat but I am not sure I will get to that stage today, we will see! Right, best get started - Oh wait no there is a hoover to fix first, damn! Adam
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Post by Deleted on Dec 27, 2018 10:39:12 GMT
excellent work Adam.. it's details like these that make a model stand out from the crowd. there are a number of very fine 9F's currently being built on this forum, all top models....well done to all..
Pete
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Post by Cro on Dec 28, 2018 22:23:00 GMT
Quick update as a result of yesterday in the workshop. Not as far as I wanted to get but pretty close. Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Hopefully get this all grit blasted over the weekend and take a look at the wooden floor boards. Currently working my way through the rest of the cab models but this will take some time so next job will be get the dome casting tidied up and fitted I think. Adam
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Post by Deleted on Dec 28, 2018 22:28:09 GMT
love the detail Adam...it's easy to see the amount of work that has gone into that.. first class work..
Pete
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Post by Cro on Dec 28, 2018 22:46:35 GMT
love the detail Adam...it's easy to see the amount of work that has gone into that.. first class work.. Pete Thanks Pete, I think there are 19 different silver soldering set ups and 2 soft soldering runs to do rear cheq. plate and the final rear edging strip. Just cracked the main shape of the cab as a solid model, bit of tweaking and I can use it as a guide for the sheet metal models which allow me to great laser cutting files. Adam
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Post by Deleted on Dec 28, 2018 22:51:07 GMT
That chequer plate looks the same as fitted to 4472 today... I've yet to find if it has always been that pattern.. yet another thing for me to find out about...
Pete
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Post by 92220 on Dec 29, 2018 10:55:03 GMT
Hi Adam.
Lovely job!! You say you are concerned about the height of your cab floor. Looking on the works drawing, the height of the top face of the angles that support the sides of the cab, are 5' 8.1/4" above rail height, so that is 6.04" (153.4mm). The curved plates at each front corner of the cab underframe, should be slightly above the lower edge of the back of the firebox. The curved edge of those plates follow the shape of the rear corners of the backhead and would be about 1/8" clear when cold, to allow for boiler expansion backwards. Hope that helps.
Bob.
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Post by Cro on Dec 30, 2018 11:58:14 GMT
Thanks for that Bob, a rough measure up suggest I'm about 5mm down which looks about right. I will get the cab sides cut as a template to see where things lie before doing a "final version".
Just started machining the floor boards and I'm unsure on the wood I've got. I can't remember where I got it now but the grain is quite large so it splinters easily, do I carry on with it how it is or do I find an alternative similar to yours?
Adam
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Post by 92220 on Dec 30, 2018 13:06:33 GMT
Hi Adam.
I have some spare sycamore if you would like it. If you do, PM me with which address to send it to.
Bob.
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Post by Cro on Jan 3, 2019 21:39:38 GMT
So On Monday Dad and I had a great day in the workshop together on the 9f and the 2 1/2" Schools. I managed to get the Cab floor shot blasted at a friends over the weekend which gave it a good clean up in the hard to reach places so I just need to give it a quick coat of primer to protect it for now. I don't think I have any more soldering to do only the floor boards which Bob has kindly sent me some of the Sycamore he used to do his so I can get that done hopefully before the loco goes to Ally Pally. I also managed to get the dome mounted, I had a casting off Mike that he had done for a few people but this was had been chipped by the foundry as a wax and was only going in the scrap bin so I managed to salvage it. Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr I also popped a few of the fittings on the backhead to tidy things up, looking good for now. Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr I have set a little competition going on Facebook to earn a 20% off voucher for fittings during 2019 for the person who can guess how many screws/bolts I have holding the cladding in place, closest person by Sunday wins. If anyone wants to enter drop me a PM with your guess, there are plenty of photos here to help you if need be! Dad and I also got the axleboxes machined to size and they are a very nice sliding fit in the horns. Next job will be set up in the independent 4 jaw and bore each one to size. You can see how badly made the old ones were sat on the bench infront of the frames. Luckily we were able to push the wheels off the axles, breaking the loctite, so I am just debating whether they are good enough fit back in the wheels to re-use or just make a new pair. We will do the oil ways through the centres of the axles as opposed to the top of the boxes as in this size its a nightmare getting between the frames to oil it all. Untitled by Adam Cro, on Flickr Untitled by Adam Cro, on Flickr Lastly a New Years Day run saw the wedding wagon out on the track but only to pose for a photo with a friends newly made tankers, I wouldn't let them take the wagon round for fear of it getting damaged. Only things left for these are the filler caps and brake gear which should all be on for Ally Pally as they plan to make up part of our display. Untitled by Adam Cro, on Flickr Adam
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Post by Cro on Jan 24, 2019 9:01:13 GMT
Well with the show now over I have to get back on with other work and the 9f can sit for another few months untouched . But here it is in all its glory at the show and I had some great comments about it, thanks all the popped by and said hello. Untitled by Adam Cro, on Flickr Back to the workshop and I am now starting a batch of manifolds whilst continuing to work on the G&C Brake valves. I have one brake valve to complete quickly as I'm a bit(!) late on it and the manifolds are the machining project whilst I wait for warmer weather to paint and complete the gearboxes. My lovely wife agreed to let me have a few evenings away each week to catch up on all the outstanding work so hopefully I can crack on a bit quicker with these jobs. Untitled by Adam Cro, on Flickr The batch including 1 super scale like my 9f one which I will try and complete with this lot. Untitled by Adam Cro, on Flickr Up in the fixture, this was money well spent getting this fixture made as it has made life so easy. Untitled by Adam Cro, on Flickr First stage is just to machine the boss like so, the rest can be done in the vertical slide holding the casting on a threaded boss. Lastly an almost complete order for a 7 1/4" BR Std 5, had this order a long time but customer is happy waiting for me to get gearbox complete. Untitled by Adam Cro, on Flickr Adam
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JonL
Elder Statesman
WWSME (Wiltshire)
Posts: 2,907
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Post by JonL on Jan 24, 2019 9:16:19 GMT
Amazing levels of detail, I find the whole process fascinating.
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don9f
Statesman
Les Warnett 9F, Martin Evans “Jinty”, a part built “Austin 7” and now a part built Springbok B1.
Posts: 960
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Post by don9f on Jan 24, 2019 19:38:35 GMT
Hi Adam, if by any chance the G&C brake valve you referred to has a “6” in its description, that would be ideal! Although I haven’t updated my thread for some considerable time, I have just recently completed all preparations for a steam test of the 9....just waiting for some free time and a decent day to coincide. If this goes ok, I will be putting the cab back on and connecting up all the pipes and spindles etc. that pass through it.
Regards and hoping!
Don
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Post by Cro on Jan 25, 2019 6:45:05 GMT
Don,
It certainly is your one! I have that casting machined and 80% of the parts for it made just need to do the last few bits and solder it up and test.
Look forward to seeing the 9 all together again.
Will keep you posted.
Adam
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