On (18 Oct 97) Alec Cameron wrote to MIKE ROSS...
 AC> Hi Mike
 AC> On (15 Oct 97) MIKE ROSS wrote to Alec Cameron...
 MR> Okay, spilling rim filled coffee cups is not the issue. The smooth
 MR> computer controlled acceleration from 0 to 70 mph.....//....
[MODERATOR- sorry for sustaining this off topic flare re hybrid vehicles/ gas
turbines etc but a lot of guys are keen to explore. Speak up if you want to
cool it!]
 AC> So you wanna be technical- I'd prefer to be tactile. All the current
 AC> trains
 AC> here whether loco hauled, multiple unit, or UK HST type are smoothly
 AC> accelerated and I put that down not to the control system but to
 AC> conventional
 AC> tight couplers and heavy vehicle mass. Lethargic power to weight ratio
 AC> maybe?
 AC> .....//......and the smoothness of
 MR> the ride on inflated rubber radial tires (not steel rails) is the
 AC> issue.
 AC> Our track here is continous welded and neatly ground. Rubber tyres would
 AC> be
 AC> great to cut the audible racket of clicketty clack and
 AC> trackswitches/crossings.   But as our passenger stock is mostly
 AC> airconditioned
 AC> with double glazing, noise is no longer a factor.
 AC> Car suspensions are air bag types with lotsa rubber pads, so the car 
ody
 AC> wafts along more like a ferryboat or airliner in calm air.
 AC> My guess, is that pneumatic rubber wheels would be best appreciated on
 AC> un- welded track, non airconditioned cars with substantial acceleration
 AC> and AC> braking forces. Which probably means, elderly city tube 
ilways.
A lot of this is to do with Newton's Laws and basic physics. We need lotsa
those constraints in view, to make a winning in HOMEPOWER achievements. Hafta
be on guard against those terrible liars: the journalists, the TV spruikers
and the salesmen.
 MR> Now stop leaning on firm young female bodies under pretext of high
 MR> G-forces! :-)
 AC> That can Make An Old Man Very Happy!  Cheers......ALEC
 AC> ... ........Genealogists do it yesterday
 AC> --- PPoint 1.92
... ........Genealogists do it yesterday
--- PPoint 1.92
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