Subject:
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Re: Japan Rail EF64
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Newsgroups:
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lugnet.trains
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Date:
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Wed, 7 Dec 2005 16:34:54 GMT
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Viewed:
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2721 times
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Hello,
AFAIK, the BBB loco type is mainly used in Italy, Switzerland and... Japan :)
at the moment. The debate around CC or BBB loco types is a long lasting one
around railways engineers (BTW I’m not one of them). CC type is technically
simpler to build and eases the mass distribution on only two points.
Conversely, the BBB type is easier to run fast in curves because of the 3
short bogies. Possibly this is the reason why it is still in use in
mountained countries. But the mass distribution for BBB types is more
difficult to manage because you have three points, which sometimes requires
complex articulation systems for an optimal adherence.
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Thanks for the information Phillipe.
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In France a BBB type loco was produced in 1948 and ran until 1967. It was the
only one ans was named BBB 6002. This loco was produced for comparison with
the CCC 6001 type at the same time, it is the reason why there was no BBB
6001 :) . BTW I have tentatively produced the
french BBB
6002 loco some time ago. In Lego the problem of very short curves poses the
technical problem of shifting the middle bogie under the body of the loco, as you noticed
already.
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That’s a great BBB solution. In mine the train is only attached by the middle
segment and the other two move (quite far out around corners by some CAD tests I
did). Shifting the centre one reduces this problem significantly and will make
for a much better loco around corners.
Excellent!
Tim
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Message has 1 Reply:
 | | Re: Japan Rail EF64
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| In lugnet.trains, Timothy Gould wrote: ... (...) Hello Tim, In the case of BBB 6002, I just placed the middle bogie free under the loco, with plates on top. There are two rubber bands linking this central bogie to the two others. It keeps the (...) (18 years ago, 7-Dec-05, to lugnet.trains, FTX)
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Message is in Reply To:
| | Re: Japan Rail EF64
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| (...) Hello, AFAIK, the BBB loco type is mainly used in Italy, Switzerland and... Japan :) at the moment. The debate around CC or BBB loco types is a long lasting one around railways engineers (BTW I'm not one of them). CC type is technically (...) (18 years ago, 7-Dec-05, to lugnet.trains, FTX)
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