Subject:
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Re: Draft of a new driver wheel
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Newsgroups:
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lugnet.trains
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Date:
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Tue, 28 Oct 2003 22:01:13 GMT
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Viewed:
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2196 times
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In lugnet.trains, Shaun Sullivan wrote:
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In lugnet.trains, Reinhard “Ben” Beneke wrote:
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9.) counterweight as “click-on” extra part, (if 2 moulds were possible)
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All right, I’m willing to risk some ridicule for not knowing this. What is
the purpose of the counterweight? Is it to balance the load of the drive
rod, so that the wheel never has to “lift” and weight, per se?
What is the “weight” like? A small metal-filled LEGO piece?
Is that something that is typically done in real trains? How about model
trains? And have people successfully implemented it in LEGO trains?
Has there been previous conversation here on .trains that I’ve misse
concerning coutnerweights? Anybody have any links?
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Counterweights were used on real steam engines to compensate the weight of the
connection to the rod, so that the wheel would be in balance again. Without, or
with incorrect counterweight, at higher speeds there would be a significant
distortion in the balance of the wheel, causing it to put huge forces on the
track and make it run very “rough” causing much wear on track, wheels and frame.
Think about your car’s wheels, they need to balance them (put some lead on the
rim at certain points) to make sure there are no uneven centrifugal forces on
the wheel. You can’t drive at higher speeds without those either, same
principle.
For LEGO trains, it would only be decorative ofcourse :D
--
Jan-Albert van Ree
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Message has 1 Reply:
 | | Re: Draft of a new driver wheel
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| (...) -some more comments- Not all loco's got it right- the AAR formula used for a period of time to devise counterweight weight was out to lunch- IIRC, the Florida East Coast suffered this badly with some 4-8-4's. Counterweighting and ballancing (...) (21 years ago, 29-Oct-03, to lugnet.trains, FTX)
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Message is in Reply To:
| | Re: Draft of a new driver wheel
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| (...) All right, I'm willing to risk some ridicule for not knowing this. What is the purpose of the counterweight? Is it to balance the load of the drive rod, so that the wheel never has to "lift" and weight, per se? What is the "weight" like? A (...) (21 years ago, 28-Oct-03, to lugnet.trains, FTX)
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