Subject:
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Re: Mark Bellis's trains
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Newsgroups:
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lugnet.loc.uk
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Date:
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Fri, 19 Sep 2003 06:58:43 GMT
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Viewed:
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2233 times
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In lugnet.loc.uk, Tony Priestman wrote:
> In lugnet.loc.uk, Ian Bishop wrote:
> >
> > Anyway, on to the reason for the post; the question is, can Mark's Co-Co
> > locos navigate Lego curves?! At the moment my 56's bogies are rigid and I
> > doubt if it would go round corners. I wondered if Mark had tackled this
> > problem?
>
> Hopefully, Mark's reading and will reply as well, but yes, his trains work
> on curves, as they have to for points, etc.
>
> He inserts straights between curved pieces to increase the radius, but a
> LEGO curved track is a LEGO curved track...
>
> He has a cunning technique for getting large bogies round tight corners, but
> I'll leave it to him to describe it!
>
> Tony
The maximum wheel centre distance for a rigid Co bogie is 6 studs (as seen on
7745 train set or any 12 Volt motor with its extra wheels). I articulate the
wheels on the bogies and hide them with the frames.
The diesel locos requiring articulated bogies are:
Class 66 (Co-Co)
Class 47 (Co-Co)
Class 44 Peak (1-Co-Co-1)
Class 28 CoBo (no pictures yet, but will be at Warley National Railway
Exhibition at the NEC Birmingham 6th-7th December!)
The Class 66 and Class 47 use the 2x2 + round bit with hole plates and a dark
grey 3-axle+stud piece to allow them to pivot. Generally the upper plate is on
the motor and the lower one on the trailing pair of wheels, which is towards the
middle of the loco. You have to watch that the dark grey piece doesn't foul
either the track or the loco body.
The Peak uses a double wishbone with 2 black connector pegs piece and 2-hole
2-beam ont he trailing wheels side with a XOX double right angle piece attached
to a 4-beam on the motor side. The 4-beam sits on the lugs on the end of the
motor. This engine looks reat going over the points - no-one thinks it will get
round but it does so at speed!
The CoBo uses the double wishbone with a single XO right-angle joint onto a
4-axle sideways and 1-beams on each end to give vertical movement in the
trailing wheels. This improves its ability to cope with a change of slope in
the track (max 1 plate per straight or 1 in 40 to 8mm scale)
The 66 has been proved to work round a circle of curves, though speed is limited
due to the small radius (40ft to scale). Speed can improve round wider radius
curves, such as 80ft (1 straight per curve) in the yard or 120ft (2 per curve)
on the main line. All engines will cope well with a point and reverse curve.
Mark Bellis
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Mark Bellis's trains
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| (...) Hopefully, Mark's reading and will reply as well, but yes, his trains work on curves, as they have to for points, etc. He inserts straights between curved pieces to increase the radius, but a LEGO curved track is a LEGO curved track... He has (...) (21 years ago, 12-Aug-03, to lugnet.loc.uk)
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