>Later in the article, when inside APT-P's cab and talking about the
>APT-E tilt system, you make the utterly brilliant statement "it was
>probably the highest performance tilt system in any train that's ever
>been built anywhere"!<

> Too many "P"'s

>
> Sorry for the delay, but it's now in the files section (in the
> Trainspotting folder).
>
> I tried to get it below 6MB without badly affecting audio and video
> quality, but had to settle for slightly more.
>
> The volume is a little low so turn it up from the start.
>
> Three cheers for Mr Spackman......
>

> I wonder what the reserve is??

> I looked into it and it appears to be a compression/codec problem. I
> re-created the file using a larger frame size, higher frame rate, and
> higher bit rate, and it appears to have solved the problem.
>
> Unfortunately, the file is now 7.3MB. I will delete the current
> version and upload the 'improved' version if necessary.

>The POP train has been relisted as the reserve was not met in the previous

>
> 370006 stands at Glasgow Central station, after arriving with the

>
> http://www.railwayherald.com/imaging.centre/showimage.php?image=101921
>
> Enjoy!
> Andy
>

>
> The BFI National Archive does hold copies of
>
> Title: E FOR EXPERIMENTAL
>
> Title: ROUND TRIP TO GLASGOW
>
> We don't hold a copy of the Horizon programme but we may possibly be
> able to obtain a copy from the BBC.
> We cannot make copies of these programmes for personal use but it may
> be possible to view this material for research purposes by appointment
> at the BFI via our Research Viewing Service. Please see
> www.bfi.org.uk/nftva/access/rvs.html for further information on this
> service and contact details.
>
>
> How how can we get them to produce DVD of the same for commercial
> release? Any Ideas?
> Thanks Robert
>

> The BFI National Archive does hold copies of
>
> Title: E FOR EXPERIMENTAL
>
> Title: ROUND TRIP TO GLASGOW
>
> We don't hold a copy of the Horizon programme but we may possibly be
> able to obtain a copy from the BBC.
> We cannot make copies of these programmes for personal use but it may
> be possible to view this material for research purposes by

> at the BFI via our Research Viewing Service. Please see
> www.bfi.org.uk/nftva/access/rvs.html for further information on this
> service and contact details.
>
> How how can we get them to produce DVD of the same for commercial
> release? Any Ideas?
> Thanks Robert

> do you know if the films e for experimental and round trip
> to glasgow were available in vhs?

> Does anyone know how many copies of the APT Story VHS were produced?
>

> Kit,your correct,it doesn't have the interior framing or MKIV tilt
>pack,I didnt have time to do these as I was still building it the night
>before it went to the NEC, but if you want one with interior framing I
>can build you one! Wait till my skeletal pop1 appears.<

----- Original Message -----
From: "Steve Foxon" <btfman1@...>

> The forum has oodles more members than those who regulalry contribute -
> just possibly, some of them do care about issues like this.

I care about intellectual property.

There are situations where the law does allow material to be used without
permission.
That is called Fair Dealing, and enables reasonable use of material - for
specific purposes - without accidentally criminalising people.

Look at this guide page and follow the links.
http://tinyurl.com/2b93un

Myself, I often put an excerpt on the web as a Review to help people decide
whether to buy the full Work. With material like this, the punchline is
likely to be "Buy this Video", which generates more sales. It's obviously
more tricky when the material isn't available for sale, but it still has an
owner.

A lot of what we do on the web is actually legal, which in my view makes it
all the more important to play fair. It's partly about not stealing from
people, and partly about what kind of person you want to be.

David 1/2d

>
> Shane,
>
> > Kit,your correct,it doesn't have the interior framing or MKIV

> >pack,I didnt have time to do these as I was still building it the

> >before it went to the NEC, but if you want one with interior

> >can build you one! Wait till my skeletal pop1 appears.<
>
> Thanks for the offer, but as an inveterate modeller too I'd rather

> have a go myself one day. In my case it would be in N Gauge, so

> hydraulics are out........ <g>
>
> Do you need a design consultant for POP Mk I though? I could

> unique insight to what ot was like inside, and out for that

> scale models of me and Tervor Easton standing on the downwind side

> cabin would be wholly authentic of course.
>
> If you're near Shildon on the 12th-13th April Paul and I could

> arrange a personal guided tour of the E-Train systems bay, which

> like POP train's cabin but without seats.........
>
> Regards
> Kit
>

----- Original Message -----
From: "barnetbybloke" <chrisbarrett1990@...>
To: <Advanced-Passenger-Train@yahoogroups.com>
Sent: Sunday, February 24, 2008 11:16 AM
Subject: <APT Group> APT research and report project


> Hello, my name is chris barrett and I am currently doing my A levels,
one of which is Physics. I have been asked to do a research and report
project and I decided to choose the APT project and it's developement
as my chosen subject. I need to use at least 3 topics from the A level
sylabus, and this includes the use of calculations and values in my
report. Does anyone have any technical information, calculations and
values that I could include in my essay?

Wow, what an assignment Chris!

I think you'll need to help us out here, even though my son is doing a
level Physics.
What kinds of topics do you do, and what kinds of tools have you got?

The possible range is very broad, from the detail of the Fast Fourier
calculations that solved the creep equations for high speed wheelset
motion, down to the fundamentals of route planning.


You might well get a lot of points for setting out the physics of wheel
rail contact, providing you have got the software to run examples.

If you have a two-channel spectrum analyser you could do the principles of
vibration isolation and ride comfort, explaining which bits APT got right
and which bits it got wrong (the answers are not obvious, probably not even
to us).

Then there's the braking issue - why did we choose hydrokinetic brakes, and
what other choices did we have?

No doubt others will chip in from their own perspectives.


Here's a simple example that I once used in a sixth form class at a small
comprehensive school near Slough called, er Eton College:

Some railway lines take a level course, using curves to avoid hills and
towns. Other lines take a straighter route with correspondingly steeper
gradients.

a) Outline how each type of route affects efforts to reduce passenger
journey times. Use your knowledge of Potential and Kinetic energy, and
limit your scope to the effect of the route on the train.

b) Use this analysis to outline how you would optimise the theoretical
design of two separate trains, one for each kind of route.

c) Illustrate your findings by reference to a selection of trains such as
HST, APT, Pendolino, TGV, Eurostar, Shinkansen and the Lickey Banker.

c) Summarise whether or not you believe there is a "universal" type of
train that can be marketed to both types of route.

Answers on a postcard please . . . ;-)


As I see it, the advantage of this kind of assignment is that you really
can answer the question on a postcard, and then go back and put in lots of
real-world numbers and posh equations. But maybe that isn't what you are
after?

David Halfpenny (1/2d)
APT Mechanical Design 1971 - 1980

>I also contacted the NRM and they said that although they did have

>matter, it was not catalogued and therefore unavailable for viewing. <

>I've just been sent the following link by a close friend:

----- Original Message -----
From: "Kit Spackman" <101453.3657@...>

> Yet again the caption of one of the photos repeats the fiction that APT
technology was sold to Italy for the Pendelino <sigh>

> Maybe FIAT did gain from the APT wheel-rail dynamics but that would be
about all.

I think I remember that there was some kind of Licence agreement, but can't
tell you what was in it. That may be the basis for the rumour. There was
certainly one for the American APT, and maybe the content was similar?
However the idea that the physical realisation of Pendolino was based in
any way on APT is pure fiction.

"Sold" would be the wrong word, but we did give FIAT one absolutely
mission-critical piece of information that saved their project: it might
even have saved lives.

When they came over to describe their suspension to the APT Design Team
(and no doubt wag tails with your APT Development Team), we were gobsmacked
to see that they had put the tilt pivot on top of the lateral suspension.
That is, on a curve under cant deficiency, the tilt centre would go out of
gauge - a lot. Not just under failure conditions: even when working
correctly. It was Larry Shore who put it into words, and the Italians'
relatively dark faces went ashen. The Pendolino would have been doomed to
crash on its first high-speed run.

Take a look at all the Pendolino designs: as well as the tilt system,
there's a separate active lateral suspension to centre-up the tilt pivot
within the gauge.

Of course, all tilt pivots are "virtual" - you can't put a huge trunnion in
the middle of the gangway, and there are different ways to do that.

- On APT- E, the cars were connected to the bogies by big spherical
bearings low down. These were above the swinging-arm lateral suspension
(swing-motion for you in the USA) and therefore moved outwards under cant
deficiency. The tilt rotation about those bearings centred the vehicle back
within gauge. One powered system rather than two, but still utterly
dependent on the mechanism working.

- On APT-P, the tilt pivot is provided by the four-bar-chain mechanism
between the bogie frame and the tilt platform. The entire airspring
secondary suspension) sits on top of that platform. I set out the links so
that it would lift the body slightly as it tilted. This gave a
self-centring mechanism that, brought the vehicle more or less upright
relative to the track if tilt were lost. It would still be subject to cant
deficiency, and grind along on its bumpstops, but no worse than an
overspeeding conventional vehicle, and hopefully the brakes would be on.
David Boocock had made a set of models that demonstrated how this differed
from a mere pendulum arrangement.

- I was quite distressed at a Mechanicals meeting by a continental tilt
proposal that had no mechanism at all for keeping within gauge if the tilt
system failed.

David Halfpenny
APT Mechanical Design