Hello Rupert,

> On 06/25/2020 10:42 AM Rupert Boleyn <xxxxxx@gmail.com> wrote:
>
>
> On 26Jun2020 0304, Thomas RUX wrote:
> > Morning from WA. Rupert,
> >
> >> On 06/24/2020 7:36 PM Rupert Boleyn <xxxxxx@gmail.com> wrote:
> >>
> > On 25Jun2020 1417, Thomas RUX wrote:
> >
> >>> Hi Rupert,
> >>>
> >>> Mt Referee's Manual p. 58 "Jump Drive: ...Jump drives are themselves a special high-yield power plant..".
> >> Ah, right. And they don't require external power, unlike in Classic
> >> Traveller from HG onwards (and thus the LBB 1-3 '81 versions).
> > Why would they need external power when they have their own power plant.
> Until MT there was nothing that said they had their own power plant, and
> so no reason that they would or would not need external power.
>

CT LBB 2 1977 did not link the jump drive to the power plant per p. 13: "The installed power plant must be of a letter type at least equal to the drive letter of the installed maneuver drive (the power plant letter may be higher than the maneuver drive letter)."

The link between the jump drive and power plant appears in CT LBB 5 1979 along with the jump governor allowing CT LBB 2 1977 jump drives to scale fuel use to the jump number instead of using all fuel in one jump regardless of jump number. CT LBB 5 HG 2e 1980 omitted the jump governor and makes no mention that CT LBB 2 1977 jump drives used the new jump fuel consumption scaled to the jump number, then in 1981 CT LBB 2 jump drive consumption fell into line with CT LBB 5 HG 2e.

Tom Rux