Re: Locomotives for Fife circle services?

On 17 May, 20:23, "exj...@aol.com" <exj...@aol.com> wrote:
> On May 17, 12:15ï¿½pm, kevall...@holdthefrontpage.co.uk
wrote:> On 1
7 May, 11:44, "exj...@aol.com" <exj...@aol.com> wrote:
> > Nope. ï¿½The second loco will still rev, from its own
control/regu
lating
> > air supply (the only problem being differing pressures on the two
> > locos giving different revs, hence my comment about maintenance).
>
> Wrong. The Reg. air pipes have to be connected between the two locos.
> First rule of fault finding if locos low on power is to check the reg.
> air pipes and cocks.

The first rule is to check pipes and cocks (actually, on some locos,
for example Class 31, it's worth checking that another controller
isn't unlocked, as that gives low Regulating Air due to leakage in the
controller valve.  Conversely, it doesn't matter if controllers are
unlocked on EE locos), but that is for a cock venting to atmosphere.
I'll reiterate:  Blue Star will work, with each loco supplying it's
own Regulating Air, without the RAP coupled.  It is bad practice,
though, as the locos may give differing revs, due to differing
pressures.
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