boxbrownie
RMweb Premium-
Posts
4,193 -
Joined
-
Last visited
Content Type
Profiles
Forums
Blogs
Gallery
Events
Exhibition Layout Details
Store
Everything posted by boxbrownie
-
Absolutely true, at any speed you’ll get a bow wave, what you don’t want is to go in fast enough to get a bow wave like HMS Ark Royal on its way to the Falklands! Slow and steady will cause a small bow wave which will help keep a slight cavitation (basically stop the engine bay filling up to the water level) in the engine bay. This only works over short distances of course, after a good few yards the engine bay fills regardless, then you just hope you made the right call, and the designers put the intake in a sensible position
-
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
That diagram shows the lifting point and the damper bracket attached, although so far Hitachi have not stated the cracks are a result of stress from the continuously under load bracket or the occasional lifting during servicing, I know which one my money is on -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Just announced on BBC apparently services will be back in action very soon, I heard (from the train room so might be a bit wrong) that Hitachi or the TOCs regard the cracks as safe and will repair as and when. edit.....ah yes, should have read the post a couple above, same press release it appears. -
It means your driving like a clown......
-
Frustratingly taken at a much slower speed probably all of those would have got through without issue, local garage/recovery must be raking it in
-
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
I cannot believe a company such as Hitachi is going to do a “quick cut and shut” to fit U.K. LG, any modifications would have been fed into the computer along with material strengths intended lifetime cycles, stress predictions and I don’t really believe you think that also. Mind you their TVs were carp! -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Well at least we now know who to point the finger at........thanks for popping over the parapet Seriously though, an interesting insight and good to get some actual facts. -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
But how do you know they weren’t specified for “British” conditions? I would guess it’s a similar situation to designing a world market car, the main construction component will be common but certain items like springs, dampers, tyres, steering rack, emissions gear (even the colour of the trim) etc will be for the intended market. The thread is getting clogged up with a lot of pure speculation (not necessarily pointing at you Gwiwer) and some quite nasty accusations directed at manufacturers, operators, governments, countries and the poor old Badger -
Of course they are.....just sit in the tub for an hour and watch your fingers fall off......we won’t mention other bits
-
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
WTF? -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Possibly, or was that a guess? -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Agree completely, doesn’t sound like whinging but just common sense. For example the engineers who designed the brackets and mounts (for example) must have been given a set of data of stress and life cycles that need to be accommodated, the engineers would have fed the CAD/CAM and the resulting components would be fine, what cannot be predicted is conditions which were not revealed/released or just overlooked by the commissioning customer (which could easily be another department within the same company of course) or end user. Engineers and designers can only produce what’s asked of them, occasionally they cock it up but it’s quite rare. As for the new boys in my post, they soon learnt and become good mates with those giving them jip, and also learnt to respect the experience passed on by the “old lags” and the old lags knew full well they themselves could never have gone through the same theoretical courses without looking like idiots. I’d still like to see some pics though -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
No, no your very wrong there, pretty sure they were implicated pages back -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Somewhere in the loft I still have the hinge I made on the first few metalwork lessons at secondary school, not sure the lessons are quite the same (or as practical) anymore. -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Depends how sneaky they can be..... -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
In this day and age that is totally true......c’mon someone must have sneaky piccy they can slip on the net? -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Possibly but the solution would still have to go through a completely new testing and sign off, it could take months of rig testing to pass safe. -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Purely guessing but from some pictures it appears the lifting/jacking platform area also performs the task of having the yaw damper bracket attached, if that’s the case then it could be entirely reasonable to assume it’s nothing to do with the lifting forces as such when serviced but the turning force from the yaw damper bracket, it could start a crack at the furthest point from the bracket but still be the cause. I’d still like to see some decent pics of this area though, but then that’s 35 years of destructive test recording coming out in me -
That’s because we absorb moisture, completely out of our control as I constantly tell Mrs BB.
-
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
We had engineering graduates arrive and on a tour of the workshop that couldn’t name half of the tools laying around, I am sure it’s not the case but it seemed most of them had never owned a toolbox of their own before going off to Uni. They got very short shrift from the old lags at the benches when they tried to direct a particular piece of work. Got called some very interesting names Almost all of the managers and senior engineers at our place went through the company’s apprentice training scheme straight from school, then LATER in their career when it was recognised it was required they attended Uni to get degrees and top up the wealth of experience (and learn how to design on a screen!). I swear the Graduates thought you were being racist when mentioning an English Wheel. -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
I don’t believe there has actually been a photo published in this thread yet of the actual issue with the 800 class, would be very interesting to see rather than guessing. -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Good...I hate those kind of passengers -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Shame though, at least no one would complain about uncomfortable seating...........here we go again -
Hitachi trains grounded
boxbrownie replied to great central's topic in UK Prototype Discussions (not questions!)
Why...a little bit of arching through stainless steel never hurt the running qualities