I remember getting these trains when i was a child with my dad from Twickenham to Waterloo. This is why these trains are my childhood and also my favourite. I learnt all the other trains on SWT through sitting and looking through the window 😊
I remember coming down to london to visit my auntie in egham, and these were the trains we used to get. i was only 6 at the time and i miss this time so much
I heard that the 458s went down from 100mph max to 75mph when the 5th cars were inserted from class 460s because of the 5th cars. Not sure why But now that they’re having a regional style refurbishment, the 5th carriage is being removed and they’re going back to 100mph but are keeping the end gangways they gained though. I wonder how the comfort will compare…
@ChilternTransportProductions alright , hopefully you will read all of this, this is also based on rail forum info too. ,so here's my opinion on the reason it was geared to 75mph, It's extremely likely that the 458s had acceleration issues once the 5th carriage was added . Why? Excessive weight. Motors Can only pull so much weight before they start to overheat, and the 40 tons of weight likely went way over the load threshold for all 6 motors. In the 2000s the uk underwent a weird habit of making their trains really bulky ,450s, electrostars and junipers usually 160 to 170 tons per 4 cars , vs previous aluminium built, previous generation units like networkers and second gen brel (455s, 317,319-etc), ranging from 138tons to 150 tons per 4 car unit. The 458/0s were 164 tons according to wiki. Similar to E-stars Some say ( its due to added air con, and other equipment being large so therefore the body shell and bogies needed to be a bit more bulky) . It's likely that manufacturers could have easily built lighter trains like the 465s or 365s , but rather to meet the demands and time , they likely didnt bother with attempting to undergo the research projects required. (I'd argue it was still a doable thing to make light trains on the 2000s though , in the 90s , the inner frame lightweight bogies were already being tested on class 466s before the 466s had standard bogies refitted to them. There's a limited video I can show you of the bogies . The class 220-222 voyager series have some of these bogies despite being built so long ago. That being said british rail could have had these used on the 458s and electrostars but I digress. I said all that to say , that each juniper carriage is hefty . Adding even one more carriage onto the unit without an extra pair of motors will put a tremendous amount of stress on them , again because the carriages are 40 to 45 tons each . South Western trains made a foolish choice of not adding another 2 motors from the 460s to the 458s. What probably happened as a result was during testing. Having them geared to 100mph with all that load meant 1.they probably accelerated slowly and wouldn't match acceleration standards for the suburban /inner routes. And would never likely hit max speed as a result. The result of this is... 2. Increasing the total power input into the train and into the motors to attempt to get the moving faster. However because The carriage to motor ratio is so much greater with 5 carriages the total power needed probably overheats the motors. So as a result, the downgearing of the motors means they can spin faster so that the inner motor fans can start to spin faster at a lower speed and cool itself down. It also means that the motors can probably be programmed to use less power at lower speed , as lower gearing can use less power and achieve faster acceleration , but the trade off here is max speed. Due to the fact that they rarely get used on 90mph routes and would likely only hit 70mph, it was probably the best solution to scale them down to a lower speed gear ratio. That's likely the best explanation I can come up with. Hope this was insightful 4 cars means much less weight for 6 motors and thus better acceleration with way way less stress. Smooth and faster acceleration is much , much more likely
Once I went on this train in around 2002, 2003 probably when I was a toddler, wish they kept them like these until alstom made them horrible! At least the motors are the same.
I remember getting these trains when i was a child with my dad from Twickenham to Waterloo. This is why these trains are my childhood and also my favourite. I learnt all the other trains on SWT through sitting and looking through the window 😊
Thats interesting stuff yawwie.
extremely tantalising stuff mr yawwie from yawwie news news yawwie yawwie news
v intriguing stuff yawwie from yawwie news
I remember coming down to london to visit my auntie in egham, and these were the trains we used to get. i was only 6 at the time and i miss this time so much
0:07 Rare announcement! You never hear an announcement on other National Rail trains that says the door buttons are activated.
The door buttons are now activated!!
I miss the cheery man. Especially how he used to say TWICKENHAMMMMM!
Thank You Very Much For This Keep It Up Mate More South Western Railway Via LongCross Please Mate Keep It up Mate Best Videos U have Done Bye Arthur
I so miss the announcements from Juniper Man.
South West Trains Class 458
We are now approaching reading, where this train terminates
I miss these units :(
The class 458/0 is now passed away and they keep the 458/5 they both have really nice motor
Their the same train just modified a bit
They are getting resurrected as 458/4 so to 100mph
These were the 100mph versions , I wonder if their acceleration was any better than the /5s since they had 4 carriages.
Nope
@@TheArkamedBat no suprise since south Western tend to order their trains to slug around the railway.
I heard that the 458s went down from 100mph max to 75mph when the 5th cars were inserted from class 460s because of the 5th cars. Not sure why
But now that they’re having a regional style refurbishment, the 5th carriage is being removed and they’re going back to 100mph but are keeping the end gangways they gained though. I wonder how the comfort will compare…
@ChilternTransportProductions alright , hopefully you will read all of this, this is also based on rail forum info too.
,so here's my opinion on the reason it was geared to 75mph,
It's extremely likely that the 458s had acceleration issues once the 5th carriage was added . Why? Excessive weight. Motors Can only pull so much weight before they start to overheat, and the 40 tons of weight likely went way over the load threshold for all 6 motors.
In the 2000s the uk underwent a weird habit of making their trains really bulky ,450s, electrostars and junipers usually 160 to 170 tons per 4 cars , vs previous aluminium built, previous generation units like networkers and second gen brel (455s, 317,319-etc), ranging from 138tons to 150 tons per 4 car unit. The 458/0s were 164 tons according to wiki. Similar to E-stars
Some say ( its due to added air con, and other equipment being large so therefore the body shell and bogies needed to be a bit more bulky) . It's likely that manufacturers could have easily built lighter trains like the 465s or 365s , but rather to meet the demands and time , they likely didnt bother with attempting to undergo the research projects required. (I'd argue it was still a doable thing to make light trains on the 2000s though , in the 90s , the inner frame lightweight bogies were already being tested on class 466s before the 466s had standard bogies refitted to them. There's a limited video I can show you of the bogies . The class 220-222 voyager series have some of these bogies despite being built so long ago. That being said british rail could have had these used on the 458s and electrostars but I digress.
I said all that to say , that each juniper carriage is hefty . Adding even one more carriage onto the unit without an extra pair of motors will put a tremendous amount of stress on them , again because the carriages are 40 to 45 tons each . South Western trains made a foolish choice of not adding another 2 motors from the 460s to the 458s. What probably happened as a result was during testing. Having them geared to 100mph with all that load meant
1.they probably accelerated slowly and wouldn't match acceleration standards for the suburban /inner routes. And would never likely hit max speed as a result. The result of this is...
2. Increasing the total power input into the train and into the motors to attempt to get the moving faster. However because The carriage to motor ratio is so much greater with 5 carriages the total power needed probably overheats the motors. So as a result, the downgearing of the motors means they can spin faster so that the inner motor fans can start to spin faster at a lower speed and cool itself down. It also means that the motors can probably be programmed to use less power at lower speed , as lower gearing can use less power and achieve faster acceleration , but the trade off here is max speed. Due to the fact that they rarely get used on 90mph routes and would likely only hit 70mph, it was probably the best solution to scale them down to a lower speed gear ratio. That's likely the best explanation I can come up with. Hope this was insightful
4 cars means much less weight for 6 motors and thus better acceleration with way way less stress. Smooth and faster acceleration is much , much more likely
The better version of the 458
The high pitched sound they make when taking power, that is the motor inverter, right?
The 458/0 is good for Portsmouth services.
They are changing to 458/4s. Basically like the 458/0 it'll be 4 carriages again but still looking like a 458/5 if that makes sense.
Once I went on this train in around 2002, 2003 probably when I was a toddler, wish they kept them like these until alstom made them horrible! At least the motors are the same.
whed did they go out of service
They haven't, they been upgraded and had a face lift.
What colour was it Blue or white
White
Oh, interesting.
I sound beep high pitched