Subject:
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Re: Steam engine complex wheelbases (was: BBB wheels sales)
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Newsgroups:
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lugnet.trains
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Date:
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Thu, 29 Jul 2004 11:31:15 GMT
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Viewed:
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3874 times
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In lugnet.trains, Jason J. Railton wrote:
> In lugnet.trains, Ben Fleskes wrote:
> > In lugnet.trains, Mathew Clayson wrote:
> >
> > > <snip> But the last 2 drive wheels and conneting to a 6 wheeled tender is
> > > driving me nuts.
> > >
> > > Any solutions that someone would care to share?
> > >
> > > Mat Clayson
> >
> > Mat,
> >
> > What you need is a blind driver - a wheel without a flange. The blind driver is
> > one of the two new parts that will be introduced at Brickfest.
> >
> > Ben Fleskes
> > Big Ben Bricks LLC
>
> Thanks for letting that slip Ben. I presume the other one is still a secret
> though...
>
> I did just work out a way of getting a six wheel set around a corner, with
> connecting rods. It allows one of the middle wheels to fold in on the inside of
> a corner, without pushing the opposite wheel outward. It uses layers of 1x4
> technic steering plates with a 2-stud axle vertically through the ends as a
> hinge. A length of flex tubing clipped at one end makes a gentle but precise
> restoring spring. This lets the brick holding the wheel move independantly of
> its opposite number. The pin at the middle of the connecting rod is an axle
> pin, which can slip in and out of the wheel hole.
>
> You have to mount all the wheels on technic twin-hole 1x2 bricks to get enough
> stud space between the front and rear axles, without making the whole wheelbase
> too long to negotiate a corner. 1x1 'Bosch Washing Machine' one-hole technic
> bricks can rotate in place, so aren't suitable for holding axles.
>
>
> As for a six-wheeled tender, you can make the middle wheel slide sideways if you
> want it independant.
>
> My latest wheelbase though has a trailing 2-wheel bogie, so what I've done is
> connect that using a fishplate (a plate pivoted at both ends, to allow snaking).
> The front wheel block of the tender is connected to the other four in the same
> way. Then, these two floating wheels lock together when you hitch up the
> tender. I use a magnet and aligning pins, so they don't flex. They form a
> four-wheel truck of their own.
>
> Another alternative, if you're not using coupling rods (or if you only couple
> the front two axles), is to let the back two drivers of your engine move around,
> and lock them to the front two wheels of the tender. That's how my Castle Class
> engine works. Although on that, this gives you a moving floor in the cab which
> isn't save for minifigs.
>
>
> Jason Railton
To Jason
Have you got pictures of your 6 wheeled train, wheelbase ?
I would like to see your idea !
Here is what I did for my steam train
http://brickshelf.com/cgi-bin/gallery.cgi?f=78519
Can't wait to see what new parts Ben has made !
Ben , Will you also be doing an anouncement on lugnet/trains , for the people
that can't make it to BrickFest ?
Thanks , Teunis ,M>ltc
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Message has 2 Replies:
Message is in Reply To:
 | | Steam engine complex wheelbases (was: BBB wheels sales)
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| (...) Thanks for letting that slip Ben. I presume the other one is still a secret though... I did just work out a way of getting a six wheel set around a corner, with connecting rods. It allows one of the middle wheels to fold in on the inside of a (...) (22 years ago, 29-Jul-04, to lugnet.trains)
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