Re: TAN: Blackpool (was Re: Melbourne, Christchurch)

Hey Bob,

Most if not all, Blackpool cars have two motors, no they are not max
traction, in fact, they are a swing link, not unlike the #15's with flat
steel instead of channel.

Many systems had two motors in equal wheel trucks where the terain was
basically flat (like Blackpool is), New Orleans for example and nearly all
Japan's street tramways (have a look at "my" car, Nagaski 1054 at SPER) are
two motor, in fact, a couple of Nagasaki's new cars have a monomotor in one
truck only and the trailing truck has short axle centres!

Greg

228 would have a very low centre of gravity which means less roll tendency
for the body.

With less roll tendency you can tune steel spring suspensions for better
ride by making them more supple and you can also have higher spring
deflection. That's why you see anti-sway bars under heavy vehicles with
parabolic springs. That takes care of body roll and so you are only
concerned then with vertical oscillation.

What kind of springs does the Boat have?

Why two motors? Don't tell me it has "Maximum Traction" trucks under it.

RT Murphy

----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Wednesday, August 29, 2001 6:31 AM
Subject: [TramsDownUnder] TAN: Blackpool (was Re: Melbourne, Christchurch)

. . . I don't know how well these English electric trucks rode
when new.

They rode badly when I first knew them in the late 1950s

although some

were better than others. On good street track they were OK, but

not on

the Promenade and sleeper tracks which have a more resilient
foundation. . . .

Thanks.

The 228 rides pretty well on MUNI track, although one is quite
aware of wheel noise on special work (perhaps because of no
roof or windows?). The main problem with "the boat " seems to
be the tempermental controllers, especially when starting on a
hill. Two motors aren't ideal in SF either, but I've been surprised
by its hill-climbing abilities, with an experienced motorman.

Did Blackpool modernize the propulsion in the Boats later on?
Once under way, the 228 rolls along quite nicely, thank you.

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