Recent content by hwl

NR also have plenty of experience with fibreglass rods for support arms for short challenging sections e.g. Thameslink core available from at least two manufacturers via Unipart

It regularly gets debunked on the forum too but lot of people don't listen and just repeat it.

Either funds or have requirements changed? (the later isn't a simple answer) On the funding thinking in similar terms to HS2 reprofile spend given rising costs so less occurs in parallel, did it need another team? So does i make sense to keep existing teams working for longer and add it to the...

Agreed and they have passive provision (space) for free flow right hand turns later with the design currently being built. In reality two of the free flow right hand turns were more "politically" sensitive (those start or landing in the "Wisley Gardens" corner - the 2 A3 to M25 ones) than the...

Sort of, Adessia includes Aventra as sub-brand for the time being.

Yes - but it doesn't maximise the SFC benefit for the SFC fan club! Correct - which it why it has been done elsewhere especially where the track and train cost thinking is more unified. The problems come with cost due to the greater number of stacked levels need for 50kV vs 25kV (e.g. assume...

MML wise gut feeling suggests 400kV to Derby then 275kV further north (Sheffield / Chesterfield was all early grid at 275kV). Marshall Meadows - I get the feeling they were trying to use the last spare capacity available - it may well be that less spare capacity was available than originally...

Not necessarily - it is worth remembering that this video is from the pro SFC camp. SFC have many advantages but also have high cost. The electric supply situation can be very different across the country which will lead to differing levels of appropriateness advantages in different locations...

Agreed but that doesn't stop people having cunning plans without looking at the case by case detail The main electrical but not loading gauge (i.e. the pan fits through) clearance issues are: a) lightening fault conditions this requires ~15-20x the clearance of the normal OHLE operating voltage...

"If it works in other industry's why can't it work in rail" :D except it often wasn't really working that well in other industries and they moved at just the point availability of skilled IT staff went down. Even CAF prefer to have their key suppliers within day trip range Alstom software is...

Which is why I said Coradia PV in the original post but you ignored that. Polyvalent effectively translates as Multi-mode The divestment of the "Coradia Polyvalent" brand was a specific requirement (along with the IP) of the EU competition commissioner in approving the Alstom Bombardier...

Correct which also includes some current products. The hardware (loom control processes) isn't the issue but the Bombardier moving software to Bangalore Alstom can do the software variations well unlike Bombardier (Rail). That was largely the Bombardier philosophy which was let down but the...

It is a bit more complicated than that especially as philosophy has changed/adapted post Bombardier. Most trains belong to a belong to a final assembly facility linked to platform design. There are technology centres of excellence for components /shared architecture design which often feed...

As I wrote few pages ago Alstom has had to dispose of two continental MU platforms (including brands and license the IP if they they continue to use themselves or hand over the IP if they don't) for one ex Alstom France (Coradia PV, multi-mode EMU) and for one ex Bombardier Germany (Talent3...

And how would that work with regenerative braking which all the units in this area use? (Saving operators many £££s) 1713427818 345 are 5-4 split with the middle vehicle being trailer so no traction power need there anyway. 701 is 5+5 Software is used