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PostPosted: Sun Jun 10, 2007 20:28 
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Oscar wrote:
Quote Elandgone:_

'Whilst many believe they are driving safely when they exceed the limit as it is now, you cannot account for all the things that could go wrong that are outside the drivers control...Even @ 70 mph stopping safely and control of the vehicle during/ after a blow out could well be outside the capabilities of some(many?) drivers. Now...a blow out at 90+ wouldn't be very safe for either the driver or anyone else I'd wager. Smile'

Then please explain to me how we survived before 1965 when the only limits were 30mph where there were street lights spaced at 200 yards or less? :D

(And some cars were capable of well over a ton, on cross-plies! :shock: )

No ABS, no EBD, etc................................


There was nothing actually wrong with cross ply tyres. In fact racing tyres used to be generally of cross ply construction, and I think they continued in use for some time after road cars were starting to use radials.

Best wishes all,
Dave.


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PostPosted: Sun Jun 10, 2007 20:50 
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TripleS wrote:
There was nothing actually wrong with cross ply tyres. In fact racing tyres used to be generally of cross ply construction, and I think they continued in use for some time after road cars were starting to use radials.


Yeah, I vaguely recall a TV ad warning you not to mix cross ply and radial tyres in certain configurations. I was just a kid at the time so don't recall the full details.


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PostPosted: Mon Jun 11, 2007 00:46 
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TripleS wrote:
There was nothing actually wrong with cross ply tyres. In fact racing tyres used to be generally of cross ply construction, and I think they continued in use for some time after road cars were starting to use radials.


IIRC crossply have more lateral give than radial but less in the direction of rotation.

This is the reason I was told my Reliant 3 wheeler could not use radial tyres. Too much lateral grip could cause it to turn over. Not that it needed much excuse. :shock:


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PostPosted: Mon Jun 11, 2007 11:30 
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There's an interesting 'why do drivers speed' discussion raging on Pistonheads: http://www.pistonheads.com/gassing/topi ... 401750&i=0 (requires free registration).

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PostPosted: Mon Jun 11, 2007 13:02 
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Rigpig wrote:
TripleS wrote:
There was nothing actually wrong with cross ply tyres. In fact racing tyres used to be generally of cross ply construction, and I think they continued in use for some time after road cars were starting to use radials.


Yeah, I vaguely recall a TV ad warning you not to mix cross ply and radial tyres in certain configurations. I was just a kid at the time so don't recall the full details.


I believe the advice was that if you were only fitting two radial ply tyres they had to be fitted on the rear wheels - presumably so that if loss of grip were to be suffered it would be at the front end, i.e. understeer, which is deemed to be easier for most drivers to cope with.

Best wishes all,
Dave.


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PostPosted: Mon Jun 11, 2007 21:38 
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TripleS wrote:

I believe the advice was that if you were only fitting two radial ply tyres they had to be fitted on the rear wheels - presumably so that if loss of grip were to be suffered it would be at the front end, i.e. understeer, which is deemed to be easier for most drivers to cope with.

Best wishes all,
Dave.


Being of the age when cross plys were the standard and radials introduced as i changed cars, seem to remember you are right, and think that was the reason.

Homer wrote "This is the reason I was told my Reliant 3 wheeler could not use radial tyres. Too much lateral grip could cause it to turn over. Not that it needed much excuse. Shocked"

Only once had that problem with father in law's Reliant --parking on hill at Robin hoods bay (on slope).On the road, it tended to slide first, more like a moggie minor.

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PostPosted: Wed Jun 13, 2007 14:19 
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Johnnytheboy wrote:
When I was a dissolute student I used to smoke bucketloads of marijuana and play racing games on the Playstation - very successfully (anyone remember how hard 'Wipeout' was? I was the master.)


I know the record Wipeout with the wicked drum beat. I used to play it on my girlfriend's buttocks :) Ah memories.


But seriously, without wishing to detract from your original question Paul, I think maybe it isn't just about why do people speed but why do people break laws in general?

If someone perceives that a law is dumb then even the most law abiding person will ignore it, myself included, and the speeding issue is a perfect example of this.

For instance, I ride my pushbike on the pavement sometimes when I can hear a HGV thundering up behind me on a narrow road. When there's no-one on the pavement this is what I do. So long as I'm not threatening anyone, why not safeguard myself until the danger is past and get back on the road afterwards. I do the same at dangerous junctions too, but once again only if there aren't any pedestrians around. Ahh but you can't do that Tone, I hear them say.

I could go on but my point is that I don't want to blindly follow a dumb law where common sense should prevail instead. I'm not going to put myself at risk just because someone hasn't thought the law through thoroughly; someone who most likely doesn't understand what it is to be a cyclist in today's world but has the power to make my world more unsafe.

I'm putting a duty of care to myself above the law really.

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