newmercman:
switchlogic:
Carryfast:
On that note hopefully if we get Brexit we’ll at least be able to spec them again here.Like the rest of the English speaking world.
That’s some serious wishful thinking!
No Luke, it’s not wishful thinking, he’s off his nut!
Driving a lorry with a Fuller is a PITA, I know because I do just that, compared to a synchro box it is a nicer change, as long as you get it right of course, which I do most of the time, it’s a nice simple glide from one gear to the next, I never use the clutch apart from pulling away, a split is almost effortless, just a quick lift of the throttle and it slips in sweet as a nut.
My other lorry has ishift and it’s much nicer to drive, especially in the mountains, the shifts go through seamlessly and when down changing to bring the revs up for maximum engine brake performance it changes far quicker than I can with a Fuller, meaning that freewheeling is kept to a minimum and that is much safer.
The reason I bought the lorry with the Fuller was nothing to do with its shift quality or any macho crap, it was simply because everything else about the lorry was exactly what I wanted and as I pay for any repairs, the added complications of ishift are a bit daunting, but I’ll tell you this for free, the next new one I buy will be an ishift, especially if I can get hold of one of those twin clutch ones, I honestly wouldn’t care if I ever held a gear stick again.
Off my nut leave it out.Given an objective comparison of customer acceptance,in the English speaking world away from all the EU bs,to date,of 18 speed v I shift I’d guess that the 18 speed is at least holding its own if not ahead.You’ve provided the reasons for that there yourself.Not surprisingly,as I said,in an environment in which a truck’s working life is measured in millions of kilometres and decades and in which added unnecessary complication is the anti thesis of that requirement.
Which leaves the question who would you rather employ.The type of driver moaning about ‘old’ trucks in the OP,who actually needs an auto shift,or one who’d actually prefer to drive an 18 speed but will drive the I shift if you really must have one. 
As for the superiority of constant mesh over synchro the explanation as to why even the I shift chooses the constant mesh format says it all in that regard.IE it’s simply unarguably the best choice of the three different types of manual/automated manual transmission design.Regardless of whether a driver is happy to actually drive the thing or not.Either because of a lack of ability,which is a scary prospect in the case of anyone driving any type of truck.Or the lesser issue of can just no longer be bothered.In which case like you and others give them an I shift but don’t call anyone who’d prefer the real thing and to drive the thing themselves,which I’d guess would include people like Robert 1952 or myself,as being ‘off their nut’. 