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Gearboxes (was Routemasters in Niagara Falls)
"Martin Underwood" wrote in message
s.com... "Clive" wrote in message ... In message m, Martin Underwood writes Do crash gearboxes actually engage the teeth of the gearwheels or do they engage dog-clutches (ie like a synchromesh box except without the synchromesh cones)? Cog meshing went out in the 1920s and since then it has always been dogs. So, given that post-1920s gearboxes had permanently-engaged cogs, of which one at a time was locked onto the shaft by dog clutches, why did it take so long for manufacturers to add that other little refinement, synchromesh cones? Just had a look in Alan Townsin's "The Bristol Story, Part 1", which has a picture of a KS-type 5-speed gearbox, with its top cover removed, on page 58. That had constant mesh 3rd and 5th gears, direct drive 4th gear, and sliding mesh cogs for 1st and 2nd. It was superseded in the 1950s by a synchromesh version. -- 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/ |
Bendy bus off course
In article ,
Adrian wrote: John Rowland ) gurgled happily, sounding much like they were saying : The 253 used to always come in bunches of seven. I was told this by someone, and I experienced it myself. Given that the old 253 was effectively two overlapping routes, this isn't too surprising, although 6 might be more expected. Only because it's difficult for groups of three-and-a-half buses to arrive simultaneously. Sub-quantum bus theory could explain a lot. Nick -- "My objective at this stage was to work about 3 days per week" -- Richard Parker in http://web.ukonline.co.uk/richard/cv78.html |
Gearboxes (was Routemasters in Niagara Falls)
On Sun, 20 Jun 2004 12:17:42 GMT, "Martin Underwood"
wrote: I presume no vehicles (cars, lorries, buses) produced nowadays have non-synchromesh gearboxes. I doubt it, but many cars don't have a synchro on reverse (though most do on first these days). Mine doesn't have one on reverse, and I think that's the same of all Vauxhalls. I have heard of cars with synchro on reverse recently, mind. Neil -- Neil Williams in Milton Keynes, UK To e-mail use neil at the above domain |
Routemaster gears and tickets
Martin Rich wrote:
: In any case it looks as though a lot of work has gone into design and : manufacturing of these machines. If I didn't know better I'd see this : as a sign that conductor operation was here to stay on a large : scale... While conductor operation is going to be phased out on London buses, several new tram systems use conductors. Conductors are also going to stay on trains - at least over longer distances - and on ferries. All of them will need new ticket machines from time to time ... .... Martin |
Gearboxes (was Routemasters in Niagara Falls)
On Sun, 20 Jun 2004 12:17:42 GMT, "Martin Underwood"
wrote: "Bill Hayles" wrote in message .. . Things are different now, but when I took my (car) driving test in 1968, many cars didn't have synchromesh, so you got used to it from the start. As recent as 1968? I thought all cars had synchromesh on all gears except sometimes first and reverse (where it's less important, as you're unlikely to want to engage first or reverse while moving) long before that. I took my test on a Ford Popular. I think that all the new cars had synchromesh on most forward gears by then, but the vehicle I was supplied with for my work (Land Rover) didn't. I know that the Police driving manual "Roadcraft" makes reference to double-declutching, and still recommends it even with a synchromesh box. When I asked my IAM "observer" (instructor) his response was "that's a load of archaic ******** [I'm paraphrasing!] - it's not necessary with a synchromesh box and just slows your gearchanges down unnecessarily". I am saying what I do; I'm not claiming it's current thinking or the "correct way". But having driven that way for over 35 years, it is sort of second nature! Why do rally-drivers use clutchless gearchanges? If you're asking me, I don't have a clue. My driving skills, such as they are, are with the other end of the vehicle spectrum - big and slow. OK, when changing down, you're describing *increasing* the engine revs until the gear slips in whereas I was describing blipping the engine revs over and letting them *decrease* until the gear slips in. Possible with a fast revving car. It would take far too long on the buses I'm talking about. The Gardner engine was rumoured to get from idle to full revs in just under a fortnight. So very much the same technique as with a synchromesh gearbox. But... was it as easy for the gear to engage when the engine revs matched if you didn't have synchromesh? Many of us thought it was. I presume no vehicles (cars, lorries, buses) produced nowadays have non-synchromesh gearboxes. Interesting question. I don't know the answer. -- Bill Hayles http://billnot.com |
Routemaster gears and tickets (was: Routemasters in Niagara Falls (was: Bendy bus off course))
On Sun, 20 Jun 2004 17:53:15 +0100, "Paul Dicken"
wrote: I recall hearing stories about changing gear in RTs where there was a particular hazard. Apparently, if you did not press the gear change pedal firmly and only partially depressed it, the result was that it flew back rapidly, propelling the driver's left leg into the air and creating a painful groin strain! That was the STL (before my time). The hazard was eliminated by having a pneumatic rather than mechanical pedal. -- Bill Hayles http://billnot.com |
Routemasters in Niagara Falls (was: Bendy bus off course)
Martin Rich ) gurgled happily, sounding much like
they were saying : They were, but they were number series that never got issued before the annual suffix was introduced - so they've been kept (with others) for issue to newly imported pre-63 vehicles or to pre-63 vehicles that have somehow lost their original numbers. http://fleetdata.co.uk/agerelated.html I seem to remember (but can't find my sources) that this type of new number issued to an old vehicle is specifically non-transferable, so it can't be sold on as a 'cherished number' That's the theory, but it seems to vary according to the person issuing the number - the SSL number I've got on the Solex is not stated on the V5 as non-transferable. Mind you, they've also managed to put it down as "declared new at first registration" and "manufactured 1962", simultaneously... DVLA. Gotta love 'em. |
Gearboxes (was Routemasters in Niagara Falls)
In message , Bill Hayles
writes On Sun, 20 Jun 2004 12:17:42 GMT, "Martin Underwood" wrote: "Bill Hayles" wrote in message . .. Things are different now, but when I took my (car) driving test in 1968, many cars didn't have synchromesh, so you got used to it from the start. As recent as 1968? I thought all cars had synchromesh on all gears except sometimes first and reverse (where it's less important, as you're unlikely to want to engage first or reverse while moving) long before that. I took my test on a Ford Popular. I think that all the new cars had synchromesh on most forward gears by then, but the vehicle I was supplied with for my work (Land Rover) didn't. I know that the Police driving manual "Roadcraft" makes reference to double-declutching, and still recommends it even with a synchromesh box. Does it still recommend that? Interesting. I double de-clutch when driving my Citroen 2CV, for two reasons. Firstly, its (wonderful) gearbox is happier when I do and secondly I learned to drive a crash gearbox bus before I ever sat in a car and sort of became used to it! (Long story with which I won't bore you all here!) When I asked my IAM "observer" (instructor) his response was "that's a load of archaic ******** [I'm paraphrasing!] - it's not necessary with a synchromesh box and just slows your gearchanges down unnecessarily". I was told exactly the same thing by an IAM Observer many years ago at a Citroen Car Club Rally. But then he was so appalled at having to go out with me *in* a 2CV that I think he was being negative about everything. I also now drive an Astra and in that I don't double de-clutch as it doesn't "feel" happy with it. (Or else it requires more skill than I have.) I am saying what I do; I'm not claiming it's current thinking or the "correct way". But having driven that way for over 35 years, it is sort of second nature! My thoughts are similar. (Apart from the 35 years bit!) Love the H Van reference, by the way, Bill. Excellent taste you have. Better go back to talking about buses, though....... -- Ian Jelf, MITG, Birmingham, UK Registered "Blue Badge" Tourist Guide for London & the Heart of England http://www.bluebadge.demon.co.uk |
Routemaster gears and tickets (was: Routemasters in
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Routemaster gears and tickets (was: Routemasters in
On 20/06/2004 17:53, in article
, "Paul Dicken" wrote: I recall hearing stories about changing gear in RTs where there was a particular hazard. Apparently, if you did not press the gear change pedal firmly and only partially depressed it, the result was that it flew back rapidly, propelling the driver's left leg into the air and creating a painful groin strain! Yes, cars with preselectors would sometimes play this trick on you as well. Caused by the selector finger not engaging with the busbar IIRC. |
Bendy bus off course
Nick Leverton ) gurgled happily, sounding much like
they were saying : The 253 used to always come in bunches of seven. I was told this by someone, and I experienced it myself. Given that the old 253 was effectively two overlapping routes, this isn't too surprising, although 6 might be more expected. Only because it's difficult for groups of three-and-a-half buses to arrive simultaneously. Sub-quantum bus theory could explain a lot. Would a single-decker on a double-decker route (or a "normal" bus in place of a bendy) count as a half-bus? |
Gearboxes (was Routemasters in Niagara Falls)
On Sun, 20 Jun 2004 11:35:21 GMT, Bill Hayles
wrote: Things are different now, but when I took my (car) driving test in 1968, many cars didn't have synchromesh, so you got used to it from the start. 1968 sounds rather late for many cars to be without synchromesh (though Bill Hayles has explained elsewhere what he was driving at the time). Certainly it was common to have no synchromesh on first gear - at least on mass-produced British cars - into the 1960s, but that was on the basis that you'd only engage first from a standing start, and wouldn't be reason to learn double de-clutching. Martin |
Gearboxes (was Routemasters in Niagara Falls)
"Martin Underwood" wrote in message ws.com...
As recent as 1968? I thought all cars had synchromesh on all gears except sometimes first and reverse (where it's less important, as you're unlikely to want to engage first or reverse while moving) long before that. Actually being able to engage first when moving can be useful sometimes. I remember an old Opel I had that had abysmal braking in snow but to get it to stop quicker , shove it in reverse and give it a bit of welly :) Obviously this could only be done at low speeds ( 20mph) or serious control issues would ensue but it was damn useful on a couple of occasions. Why do rally-drivers use clutchless gearchanges? Is it quicker (ie less time AFAIK they all have sequential boxes these days like motorbikes so they wouldn't need to use the clutch apart from when moving off. B2003 |
Gearboxes (was Routemasters in Niagara Falls)
On Mon, 21 Jun 2004 17:24:50 +0100, Ian Jelf
wrote: Love the H Van reference, by the way, Bill. Excellent taste you have. 2CVGB member number 1692 (Since 1982, in fact). Ran the 2CVGB club shop between about 1984 and 1988. Better go back to talking about buses, though....... The H van was a bit of a bus! I'll get my coat ........ -- Bill Hayles http://billnot.com |
Gearboxes (was Routemasters in Niagara Falls)
Bill Hayles ) gurgled happily, sounding much like they
were saying : Love the H Van reference, by the way, Bill. Excellent taste you have. 2CVGB member number 1692 (Since 1982, in fact). Ran the 2CVGB club shop between about 1984 and 1988. I thought the name familiar. You had "Pigbin" Acadiane? A friend of ours has had that van for years - it's still going strong, but the distinctive plate was sold to a TVR, but has lately been seen on an Ovlov... |
Gearboxes (was Routemasters in Niagara Falls)
In message , Bill Hayles
writes On Mon, 21 Jun 2004 17:24:50 +0100, Ian Jelf wrote: Love the H Van reference, by the way, Bill. Excellent taste you have. 2CVGB member number 1692 (Since 1982, in fact). Ran the 2CVGB club shop between about 1984 and 1988. Member 7001..... (Joined in about 1988, oddly enough, so just missed you running the shop!) Better go back to talking about buses, though....... The H van was a bit of a bus! Indeed. I'm told that Citroen *did* build buses once but I've never seen an example, despite years of interest in French buses. I'll get my coat ........ And here's me admitting to liking French buses; maybe I should do the same! -- Ian Jelf, MITG, Birmingham, UK Registered "Blue Badge" Tourist Guide for London & the Heart of England http://www.bluebadge.demon.co.uk |
Gearboxes (was Routemasters in Niagara Falls)
In message , Adrian
writes Bill Hayles ) gurgled happily, sounding much like they were saying : Love the H Van reference, by the way, Bill. Excellent taste you have. 2CVGB member number 1692 (Since 1982, in fact). Ran the 2CVGB club shop between about 1984 and 1988. I thought the name familiar. You had "Pigbin" Acadiane? A friend of ours has had that van for years - it's still going strong, but the distinctive plate was sold to a TVR, but has lately been seen on an Ovlov... CFV uk.transport.buses.2CV ....... :-) -- Ian Jelf, MITG, Birmingham, UK Registered "Blue Badge" Tourist Guide for London & the Heart of England http://www.bluebadge.demon.co.uk |
Gearboxes (was Routemasters in Niagara Falls)
On Tue, 22 Jun 2004 09:10:04 +0100, Martin Rich
wrote: On Sun, 20 Jun 2004 11:35:21 GMT, Bill Hayles wrote: Things are different now, but when I took my (car) driving test in 1968, many cars didn't have synchromesh, so you got used to it from the start. 1968 sounds rather late for many cars to be without synchromesh (though Bill Hayles has explained elsewhere what he was driving at the time). Certainly it was common to have no synchromesh on first gear - at least on mass-produced British cars - into the 1960s, but that was on the basis that you'd only engage first from a standing start, and wouldn't be reason to learn double de-clutching. Martin From my recollection of driving then and well into the 70's, all mass production cars ended up after 18months/2years without syncro. It was common practice, at least in my circles, to double de-clutch in a car as a matter of course as unless the thing was new the cones would have been worn out. I still do now as it gives a much smoother wind down of speed for the passengers without excessive clutch wear. Habits die hard. When I went to Engineering College I found out why the cones went so quickly. They were used there as examples of picking the materials for the jobs. The idea was that the 1st (if fitted) would be little better than medium carbon steel, or even just case hardened mild steel, maybe with a bit of chrome or magnesium thrown in, 2nd a higher quality and so on, . The reasoning being the amount of use each set would receive. It is worth remembering that driving then was a different world to today. No MOT. You were not drunk in charge if you could stand up and not slur your speech. Tyres were cross ply and never changed until the second canvas layer was showing. Steering wheel backlash could be up to 1/8 of a turn or better. Brakes were drum and maybe cable. Hit them hard at speed and you were lucky just to have brake fade and loose them towards the end of braking. Otherwise you just snapped a cable and died. Ford had vacuum windscreen wipers. Hit the accelerator and the windscreen wipers near stopped. Take you foot off and they would fly back and forth, maybe breaking away. Open roads were more common (even three lane main roads with the centre lane a passing lane for both directions at once - a death trap). However most cars were made with something like a 90mph top speed and 55mph cruising speed. So high speed driving was rare. If you exceeded the cruising speed for more than a short time the car would overheat. Now cruising speed and top speed are the same, so when there is a bit of open road things go much faster. Modern cars can take it (but maybe not the driver!!). Older cars from then could not. Different times, different conditions. I loved my first Car, a Morris Oxford Series 2, 1956, with column gear change (they are in there somewhere, trick is finding them!!). Magnificent wagon all round. But today I would be rather scared about the thought of taking one out on the open road and trying to drive it to suit todays conditions. Keith J Chesworth Keith J Chesworth www.unseenlondon.co.uk www.blackpooltram.co.uk www.happysnapper.com www.boilerbill.com - main site www.amerseyferry.co.uk |
Gearboxes (was Routemasters in Niagara Falls)
"Keith J Chesworth" wrote in message
s.com... On Tue, 22 Jun 2004 09:10:04 +0100, Martin Rich wrote: On Sun, 20 Jun 2004 11:35:21 GMT, Bill Hayles wrote: Things are different now, but when I took my (car) driving test in 1968, many cars didn't have synchromesh, so you got used to it from the start. 1968 sounds rather late for many cars to be without synchromesh (though Bill Hayles has explained elsewhere what he was driving at the time). Certainly it was common to have no synchromesh on first gear - at least on mass-produced British cars - into the 1960s, but that was on the basis that you'd only engage first from a standing start, and wouldn't be reason to learn double de-clutching. From my recollection of driving then and well into the 70's, all mass production cars ended up after 18months/2years without syncro. snip However most cars were made with something like a 90mph top speed and 55mph cruising speed. So high speed driving was rare. If you exceeded the cruising speed for more than a short time the car would overheat. Now cruising speed and top speed are the same, so when there is a bit of open road things go much faster. Modern cars can take it (but maybe not the driver!!). Older cars from then could not. Different times, different conditions. I loved my first Car, a Morris Oxford Series 2, 1956, with column gear change (they are in there somewhere, trick is finding them!!). Magnificent wagon all round. But today I would be rather scared about the thought of taking one out on the open road and trying to drive it to suit todays conditions. Keith, I remember that one of my uncles had one of those, but with the "manumatic" gear change, which was horrendous. I drove it once, and was not impressed. At the time (1956) I had my first vehicle, a Morris Van Series SZPO formerly of the GPO Telephones and of 1943 vintage. Top speed about 60 with a following wind, but limited to 30 mph by the law. That was replaced in 1958 by a VW Beetle 1200 DL, with cruising speed 68 mph and max speed 68 mph. Another one followed in 1960 and then in 1963 the choice was between the first Ford Cortinas or a Vauxhall Victor FB (which I chose). Both better suited to motorway cruising at 70-ish. The firm had Victor FA and Hillman Minx in the pool, and the Minxes would do 80 plus on the M6 at a severe cost in fuel consumption. You didn't get given a Victor if you were going far:-). 3-speed box on the Victor, of course, and a bench seat. -- 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/ |
Gearboxes (was Routemasters in Niagara Falls)
"Keith J Chesworth" wrote in message
s.com... On Tue, 22 Jun 2004 09:10:04 +0100, Martin Rich wrote: Different times, different conditions. I loved my first Car, a Morris Oxford Series 2, 1956, with column gear change (they are in there somewhere, trick is finding them!!). Magnificent wagon all round. But today I would be rather scared about the thought of taking one out on the open road and trying to drive it to suit todays conditions. Why was there a trend for column gear change in the late 50s and early 60s? Previously, cars had had the gear lever on the floor, hadn't they, and they soon went back to that afterwards. Shortly after passing my test, I remember trying to get the hang of a friend's old Renault 16 (one of the last cars, I think, to have a column gear change) and failing miserably: I think the secret was that you needed to be very slow and deliberate, rather than going straight from one gear to the next as you would with a normal gear lever, because the linkage felt very springy as if there was a lot of slack and springiness in the cables that actuated it. Interesting also that in the early 60s (eg Mark 1 Cortina and Mark 2 Anglia) they went in for very long gear levers, with the pivot point somewhere under the dashboard. The amount of travel on the gear level knob must have been tremendous - or else there was very little angular movement at the pivot. By comparison, I can remember how revolutionary the Viva seemed with its tiny gear lever only about four inches long, pivoted so much further back where gear levers are now. Similarly you had cars like the Hillman Hunter which had the 3-foot-long handbrake on the right hand side, between the driver's seat and the door. All this was *long* before I was old enough to drive, so they were just academic curiosities - I never got chance to try any of them. I learned on my mum's Renault 6 which had a gear lever like a hockey stick coming out horizontally from the dashboard. It looked weird but it was actually very easy and intuitive. It was an incredibly Heath-Robinson linkage: the rod ran over the engine to a gearbox between the engine and the radiator with a conventional gear lever sticking out of it. As you moved the gear stick, a fork-and-grommet arrangement moved the lever on the gearbox. It was very prone to disengaging: once when I'd reversed into a gateway, the linkage came off and the gear stick flopped upside down as soon as I took my hand off it. I've never been allowed to forget that I unwittingly uttered the question "Dad, is it *supposed* to do that?"! I drove a new Honda Civic the other day - the one with the gear lever on the dashboard. Again, it looks odd but is fairly easy - my only criticism is that there isn't very much side-to-side movement when going from second to third or fourth to fifth - I tended to miss 3rd/4th and unwittingly go straight from 2nd to 5th or vice-versa till I got used to it. Strange how you get used to little refinements, and really miss them when they're not there. When I went for a test drive on a skidpan a few years ago, the car I drove was an old Escort. And the gear lever didn't have any springs to bias it into the 3rd/4th plane, as you get on all (?) cars nowadays. You get used to the gear lever find its own way from 2nd to 3rd, with a definite spring to prevent it overshooting to 5th and vice versa - without it, I found it very difficult to judge where 3rd was: either I didn't move the lever across enough and hit 1st or else I overshot and the lever got stuck as it went to the place where 5th would be nowadays. |
Gearboxes (was Routemasters in Niagara Falls)
"Martin Underwood" wrote in message
s.com... Why was there a trend for column gear change in the late 50s and early 60s? Previously, cars had had the gear lever on the floor, hadn't they, and they soon went back to that afterwards. Shortly after passing my test, I remember trying to get the hang of a friend's old Renault 16 (one of the last cars, I think, to have a column gear change) and failing miserably: I think the secret was that you needed to be very slow and deliberate, rather than going straight from one gear to the next as you would with a normal gear lever, because the linkage felt very springy as if there was a lot of slack and springiness in the cables that actuated it. My father drove a Hillman Minx in the late 1940s, with a column change. It was quite easy to operate, as was that in the later Peugeot 404, which had 4th in an extra plane, like today's 5th, and reverse opposite 1st. I fancy that it was aimed at the export market to North America, where bench seats and column changes on somewhat larger cars were normal. Interesting also that in the early 60s (eg Mark 1 Cortina and Mark 2 Anglia) they went in for very long gear levers, with the pivot point somewhere under the dashboard. The amount of travel on the gear level knob must have been tremendous - or else there was very little angular movement at the pivot. By comparison, I can remember how revolutionary the Viva seemed with its tiny gear lever only about four inches long, pivoted so much further back where gear levers are now. Similarly you had cars like the Hillman Hunter which had the 3-foot-long handbrake on the right hand side, between the driver's seat and the door. All this was *long* before I was old enough to drive, so they were just academic curiosities - I never got chance to try any of them. One of my colleagues rented a Hillman Minx from Avis, and found, as he went to release the handbrake, that it was missing. Handed back to Avis very rapidly and told them in no uncertain manner why they were No.2. (pun intended). Remote control gear changes were unusual at that time. Maybe that's why the column change was popular. -- 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/ |
Gearboxes (was Routemasters in Niagara Falls)
In article m, Martin
Underwood wrote: Why was there a trend for column gear change in the late 50s and early 60s? Previously, cars had had the gear lever on the floor, hadn't they, and they soon went back to that afterwards I'd always presumed that it was so you could have a bench - 3-person at a squeeze - front seat -- Tony Bryer |
Gearboxes (was Routemasters in Niagara Falls)
On 22 Jun 2004 14:14:28 GMT, Adrian
wrote: I thought the name familiar. You had "Pigbin" Acadiane? If you send me an e-mail address, I'll be happy to continue this in private (I use a genuine return address); we're well off topic. -- Bill Hayles http://billnot.com |
Gearboxes (was Routemasters in Niagara Falls)
In message , Bill Hayles
writes On 22 Jun 2004 14:14:28 GMT, Adrian wrote: I thought the name familiar. You had "Pigbin" Acadiane? If you send me an e-mail address, I'll be happy to continue this in private (I use a genuine return address); we're well off topic. Do feel free to CC me in! :-) -- Ian Jelf, MITG, Birmingham, UK Registered "Blue Badge" Tourist Guide for London & the Heart of England http://www.bluebadge.demon.co.uk |
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