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Balancing rear brakes on uncoupled cars |
Posted by: `Gordonhbm - 21-03-2024, 05:37 PM - Forum: Forum chat...
- Replies (12)
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Has anyone looked how Rolls Royce solved this balancing problem between left and right rear bakes?
The principle is described below (https://www.rrec20hpregister.com/media/3579/small-hp-brake-systemsv2.pdf):
The function of the brake equalisers is to apply the same tension to the pull ropes on each side of the car, and this is done by a bevel differential, identical in principle to that of a rear axle. Th mechanisms consist of two shafts, one long and one short, each with an output lever at its outer end and a bevel wheel at its inner end. Between these bevels is a planet carrier trunnion to which is bolted the input lever.
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Harry Hales |
Posted by: Howard Wright - 21-03-2024, 02:34 PM - Forum: Forum chat...
- Replies (7)
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Dear All
More sad news. Harry Hales died this morning.
He was a through and through Sevener, involved in racing, club activity, VSCC and South Wales A7 Club. Some may know him from his booklet on Dynamos.
I’ll post details of funeral arrangements etc when I know them.
Howard
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Norman Purves |
Posted by: David Cochrane - 18-03-2024, 11:17 PM - Forum: Forum chat...
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I am very sorry to have to report that Norman Purves died last night. He had been in a hospice and this was expected, but it's very sad news. Many people will have met him at the Centenary rally at Moreton-in-Marsh, and seen 3 of his cars which were on display there together with David Mawby's collection. He specialised in very early cars and owned the earliest known production car, Chassis No. 71 (the green car), and was still enthusiastically building other early cars almost to the end.
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Patents on the Austin Seven |
Posted by: Colin Morgan - 18-03-2024, 09:42 AM - Forum: Forum chat...
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A book on the history of Wolseley cars by St John Nixon details the early design work on cars by Herbert Austin - for example, the building of his first car in 1895, and what influenced the design. He was aware that its design infringed certain patents, and therefore the whole exercise was kept very quiet at the time.
Later, when the second experimental Wolseley car was built, it was of a very different design. Many of the changes were aimed at getting around patent infringements so that the design might be taken forward commercially. This shows that patents were important in the car industry as early as the 1890s, and that Herbert Austin needed to have them at the forefront of his mind when designing.
Therefore, when it came to the design of the Seven - with its many new features - it makes sense that Herbert Austin was thorough in using patents to protect his design?
I have not looked in detail at the wording of the patents themselves, but anyone in the 1920s wishing to ‘copy’ a Seven would have had to take them into account - and areas listed include frame, suspension, engine lubrication, steering gear, front axle and brakes, torque tube, gear box, radiator and body - so most of the major components.
Perhaps this helps explain why we have that long list of patents on the dashboard of our Sevens?
patent plate.jpg (Size: 97.28 KB / Downloads: 164)
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Dynamator |
Posted by: k8207418 - 17-03-2024, 02:23 PM - Forum: Forum chat...
- Replies (8)
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Finally bought a dynamator after looking for a while for my build
Any advice on how I can make it better/ more reliable apart from bin it
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