|
|
Post by gwr1509 on Nov 25, 2021 19:28:12 GMT
Evening all, here are a new pictures from the production of the axleboxes. The lower bearing shells were fitted with oversize on the sides and at the bottom. Held in the box by ø 2mm silversteel pins and then milled flat to size. An "auxiliary centering" is introduced on the milling machine and clamped in the lathe chuck on the lathe with the aid of a revolving centre. Then drilled out with ø8mm (5/16") drill bit and further turned out to 17mm (ca. 43/64") in 0.5mm steps with an boring tool tool. After the first turning, the lateral distance was measured and corrected with the adjustable jaws of the chuck until the hole was centered.  77.72_0023 by Helmut Jarosch, auf Flickr  77.72_0024 by Helmut Jarosch, auf Flickr  77.72_0025 by Helmut Jarosch, auf Flickr  77.72_0026 by Helmut Jarosch, auf Flickr  77.72_0027 by Helmut Jarosch, auf Flickr Regards Helmut |
|
|
|
Post by gwr1509 on Nov 27, 2021 19:11:50 GMT
Evening all, the axleboxes for the bogie are ready once. Setting up the component, for processing the back, in the four-jaw chuck with adjustable jaws and with the aid of a lever dial indicator. Next, the horns are being processed.  77.72_0028 by Helmut Jarosch, auf Flickr  77.72_0029 by Helmut Jarosch, auf Flickr  77.72_0030 by Helmut Jarosch, auf Flickr Regards Helmut |
|
|
|
Post by terrier060 on Nov 27, 2021 22:41:36 GMT
Lovely job you are making there Helmut. I wish now that I had made split boxes.
|
|
|
|
Post by gwr1509 on Dec 15, 2021 16:58:30 GMT
Good evening, because I haven't had any bms angle in the desired dimensions to buy, I milled the frame stay from a solid material. So I save myself having to rivet the angles to the sheet metal piece  The rivets used are dummy and are so called half round grooved pins (I hope, this is the correct expression).  77.72_0031 by Helmut Jarosch, auf Flickr  77.72_0032 by Helmut Jarosch, auf Flickr Regards Helmut |
|
|
|
Post by steamer5 on Dec 16, 2021 7:23:13 GMT
Hi Helmut,
Glad to see there’s somebody else out there who takes a perfectly good piece of steel plate & turn most of it into swarf to hopefully find a stretcher in it!
Just turned 1500 grams of 16 mm plate into 1100 grams of swarf & a stretcher!
Keep up the good work, I’m enjoying the progress.
Cheers Kerrin
|
|
|
|
Post by gwr1509 on Jan 22, 2022 19:10:05 GMT
a little update, the centre stretcher for the bogie is getting slow.  77.72_0033 by Helmut Jarosch, auf Flickr Regards Helmut |
|
|
|
Post by gwr1509 on Jan 29, 2022 16:34:53 GMT
|
|
|
|
Post by gwr1509 on Feb 19, 2022 18:18:32 GMT
|
|
|
|
Post by norfolkandgood on Feb 20, 2022 11:05:57 GMT
Excellent modelling Helmut, I enjoy watching your progress.
Guy
|
|
timb
Statesman
Posts: 512 
|
Post by timb on Feb 22, 2022 16:27:50 GMT
Helmut,
That is an excellent finish on the wheels, are they cast iron or cast steel?
If cast iron, what tool did you use and speeds/feeds?
Superb work, well done!
Tim
|
|
|
|
Post by gwr1509 on Feb 22, 2022 19:46:00 GMT
|
|
|
|
Post by theflyingscotsman on Feb 22, 2022 21:22:38 GMT
hiya Helmut,
the bogie looks amazing, and I have never thought of using 3d printing to make casting molds, very impressed and I'm going to follow your thread 😎
|
|
|
|
Post by gwr1509 on Mar 12, 2022 18:59:19 GMT
Good evening all, a little update on the progress of my build. A friend has turned the tread, wheel flange and axle bore of the bogie and trailing wheels on his CNC lathe. So these wheels are just a perfect fit for me. A few more machining steps by me and the wheels are ready.  77.72_0044 by Helmut Jarosch, auf Flickr  77.72_0045 by Helmut Jarosch, auf Flickr  77.72_0046 by Helmut Jarosch, auf Flickr  77.72_0047 by Helmut Jarosch, auf Flickr The spring hanger brackets and the brackets for frame were assembled from individual parts and then welded together. I might rework the brackets for frame with silver solder to get a nicer rounding in the area of the transitions. This is how it looks after casting.  77.72_0048 by Helmut Jarosch, auf Flickr Regards Helmut |
|
|
|
Post by gwr1509 on Mar 28, 2022 18:00:48 GMT
Hello, there have now been changes in the bearing area. Now split bearings from Igus are used. From the feel of it, the axle run perfectly in these bearing seats. According to the manufacturer, these bearings should outlive me. On the left in the picture are the "old" axles with the one-piece bearing bushes.  77.72_0049 by Helmut Jarosch, auf Flickr For interested: IgusRegards Helmut |
|
|
|
Post by mugbuilder on Apr 1, 2022 23:30:37 GMT
Beautiful work there Helmut. Loverly pristine machinery that you have. My gear is getting all a bit battered and bent after many years of use.
Best Regards from Australia.
|
|
|
|
Post by David on Apr 23, 2022 9:17:52 GMT
That's all looking pretty special, nice work!
I love the thin spokes on the wheels, and the axleboxes are really nice. The bogey really looks the business.
|
|
|
|
Post by gwr1509 on Apr 23, 2022 16:27:23 GMT
Hello all, thank you for your kind comments. Things are moving a bit slowly at the moment. Several parts need to be machined, such as the leaf springs, spring hanger and pivot guide. The first frame stay in the main frame, which holds the pivot guide, is also finished.  77.72_0052 by Helmut Jarosch, auf Flickr  77.72_0053 by Helmut Jarosch, auf Flickr Regards Helmut |
|
|
|
Post by Deleted on Apr 23, 2022 18:37:57 GMT
That's a lovely looking bogie Helmut...I wish my wheels looked that good... Pete |
|
johnd
Part of the e-furniture
Posts: 281
|
Post by johnd on Apr 24, 2022 11:16:08 GMT
Always a pleasure seeing your work in progress Helmut, keep posting.
|
|
|
|
Post by gwr1509 on Apr 24, 2022 14:18:24 GMT
Thanks Pete and John for your words of encouragement. For me, building this locomotive is actually new territory. Actually, because I have been building from modelplans (Rob Roy in 3 1/2" and Speedy in 5"). So I was reasonably sure that it would work later. Now, original plans serve as the basis for model making. The outcome is uncertain, but I will make an effort. Many contributions and pictures here in the forum are a valuable support. Many thanks to all of you for your help.  77.72_0051 by Helmut Jarosch, auf Flickr Regards Helmut |
|
