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London Transport (uk.transport.london) Discussion of all forms of transport in London. |
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"Martin Underwood" wrote in message
s.com... "Bill Hayles" wrote in message ... When you say "back to front" do you mean that the layout was: 3 1 4 2 That's the way some of the Guy Arab utility double-deckers were set out. When people refer to "crash gearbox", do they literally mean one without synchromesh (ouch!) or just a manual gearbox as opposed to a pre-selector, clutchless or automatic? The thought of having to drive a car without synchromesh shares me ****less. As a matter of interest, how long did it take to acquire the sixth sense of how much to blip the accelerator while double-declutching to allow the new gear to engage? With a synchromesh gearbox, I've found the best way to do a clutchless gearchange is to slightly over-rev the engine and let it slow down to the correct speed when the gear will engage under slight pressure on the gearlever; is the same true of a non-synchromesh gearbox? No synchromesh. If you do a clutchless change on a synchromesh gearbox, the synchromesh cones will align the speeds if you are a little out of synch. 50 or 60 years ago, almost all cars had crash gears on bottom, and Rovers had it on first and second gears, but they also had a freewheel, as I recall. The Bedford OB, for example, had a crash gearbox, while the Dennis Lancet III had a crash box on 1 to 4, but a pre-selector overdrive 5th speed. Some were "constant mesh" gearboxes, where dog clutches engaged the gears. -- Terry Harper, Web Co-ordinator, The Omnibus Society 75th Anniversary 2004, see http://www.omnibussoc.org/75th.htm E-mail: URL: http://www.terry.harper.btinternet.co.uk/ |
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