Subject:
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Re: B&O V-2 Hudson Steam Engine
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Newsgroups:
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lugnet.trains
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Date:
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Mon, 13 Jan 2003 23:03:39 GMT
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Viewed:
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804 times
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In lugnet.trains, Shaun Sullivan writes:
> In lugnet.trains, Steven Barile writes:
> >
> > Are your drivers attached to the frame/boiler of the engine or floating
> > between the trucks? Ben Fleskes uses a method (the one I’ve been using)
> > where all the drivers are floating between the front and rear trucks;
> > pivot-pinned to one truck and pivot-pinned with a front-to-back slip joint
> > to allow for expansion for around corners. And both attach points have the
> > freedom to translate up and down along a short axle so it can take uneven
> > track situations.
>
> If I might pipe in, I think that the drivers are indeed affixed to the body ...
> my experience has been that this is an important feature with a lot of
> working-piston systems. Having the drivers move means that you either have to
> (a) have the cylinders move as well, or (b) allow enough slop in the linkages
> to provide for some relative motion between the drivers and the cylinders.
> Oftentimes it's easier to simply affix the drivers and cylidners relative to
> each other, and then provide for some (creative) pivoting of the leading and
> trailing trucks.
>
> -s
Yes, the drivers are attached to the frame, for the reasons Shaun explains
above and because that's how the real ones are built. By making the pilot
and trailing trucks pivot closely to the drivers, I was able to keep the
drivers over the rails at all times. I hope to have ldraw plans completed
soon to show all the details.
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Message has 1 Reply:
 | | Re: B&O V-2 Hudson Steam Engine
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| I was wondering where your leading and trailing truck pivot points were. Are each of these pivot points still between the axles of the respective trucks or in front and behind? I'll also go back and look at your pics. Would you mind if I used this (...) (21 years ago, 13-Jan-03, to lugnet.trains)
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Message is in Reply To:
| | Re: B&O V-2 Hudson Steam Engine
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| (...) If I might pipe in, I think that the drivers are indeed affixed to the body ... my experience has been that this is an important feature with a lot of working-piston systems. Having the drivers move means that you either have to (a) have the (...) (21 years ago, 13-Jan-03, to lugnet.trains)
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