Garden Railway bogie. Drawn from photos and information taken from a works drawing. 24” gauge prototype. The model is drawn at 1:13.7 scale to run on 45 mm gauge track. Drawn for 3d printing by SLS. Dimensions are to scale except where modified to increase strength and rigidity and 3d printer limitations.
Drawing 19th century style ‘curly-spoked’ wheels is an easy task in FreeCad. All done on the Part Workbench.
Cheers
Vailala
OS: Ubuntu 16.04.1 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.16.6703 (Git)
Build type: None
Branch: releases/FreeCAD-0-16
Hash: 2ce5c8d2e3020d05005ed71f710e09e9aa561f40
Python version: 2.7.11+
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 6.8.0.oce-0.17
Garden Railway Bogie
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Garden Railway Bogie
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- Screenshot from 2016-10-20 19-46-09.png (234.14 KiB) Viewed 4283 times
Re: Garden Railway Bogie
Did you model only a quarter and used the mirror twice?Vailala wrote:Drawing 19th century style ‘curly-spoked’ wheels is an easy task in FreeCad. All done on the Part Workbench.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
Re: Garden Railway Bogie
The wheels are done with cylinders and a 3 degree cone for the wheel tread. A single spoke is cut using a pair of cylinders that bracket the centre point. This spoke is trimmed and fused to the hub. The fusion is copied and spun 60 degrees 5 times (for a 6 spoke wheel). The original spoke and boss and the 5 copies are fused to the outer rim and the whole is fused. Fillets are applied to the head and foot of each spoke. The wheel has a 27.8 mm diameter.
Using FreeCAD it’s possible to draw and 3d print shapes that are next to impossible to make, at least in these sizes. This wheelset, including the axle, prints out for about $3.50.
Cheers,
Vailala
Using FreeCAD it’s possible to draw and 3d print shapes that are next to impossible to make, at least in these sizes. This wheelset, including the axle, prints out for about $3.50.
Cheers,
Vailala
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- Screenshot from 2016-10-21 13-07-47.png (282.38 KiB) Viewed 4170 times
Re: Garden Railway Bogie
I was unclear when citing only a small portion of the original post. I meant the whole Garden Railway bogie. It looks symmetric and thus could be the result of a double mirror. The wheel itself could use a polar array.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
Re: Garden Railway Bogie
Yes, basically you are correct. Half a side was drawn and mirrored to make up two sides. The other bits were then added. The bogie is only partly symmetrical as this underside view shows.
Cheers,
Vailala
Cheers,
Vailala
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- bogie01.jpeg (88.11 KiB) Viewed 4136 times
Re: Garden Railway Bogie
Thanks for sharing.
A Sketcher Lecture with in-depth information is available in English, auf Deutsch, en français, en español.
Re: Garden Railway Bogie
Looking good.