Subject:
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Re: MOCs: 6-wide New York City busses
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Newsgroups:
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lugnet.town
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Date:
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Fri, 7 Jun 2002 17:23:33 GMT
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Viewed:
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545 times
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In lugnet.town, Sean Kenney writes:
> > on that first one, why did you do the back two wheels using
> > your backwards technique (as you just showed with your Fed Ex
> > truck) while the front wheel looks like it's using the normal
> > axel technique?
>
> Well, I've noticed that most trucks and busses have a slightly different
> type of hub on their front wheels. I'm not sure why, perhaps it has to do
> with steering. (Any die-hard truck guys out there know why?) The hub on
> rear wheels is usually "indented", whereas the front wheels have the bolt
> mechanism further outwards. I'm not really explaining it well, take a look
> at this picture to see what I mean:
> http://chef.fab.albany.edu/bus/chairlift2.jpg .
If the truck has 'duallies' in back, what is often done is that only one
wheel type is used. The wheel is dished so that when two wheels are put back
to back, the wheel centers are adjacent (and the plane between the two
tyres). Then that's bolted to the rear hub. So when you look at the rear,
they are dished in.
The same wheel, turned the other way so it's dished OUT, is bolted to the
front hub. (this means that the hubs are set a lot farther apart than the
rear hubs.
That way only one spare wheel/tyre is needed.
Hope that helps.
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Message has 2 Replies:
 | | Re: MOCs: 6-wide New York City busses
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| (...) That is true. However, Sean was also right about the steering issue. You want the front wheels to pivot about their centerline, so the steering mechanism must be *inside* the wheel. Go look at your car's front wheels if you don't believe me... (...) (22 years ago, 7-Jun-02, to lugnet.town)
| | | Re: MOCs: 6-wide New York City busses
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| (...) That's interesting. After reading this post I was looking at busses all weekend. 3 different bus lines all had the wheel arrangement you describe. Funny how I never noticed that before, but now after this thread I couldn't stop seeing it. (...) (22 years ago, 10-Jun-02, to lugnet.town)
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Message is in Reply To:
| | Re: MOCs: 6-wide New York City busses
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| (...) Well, I've noticed that most trucks and busses have a slightly different type of hub on their front wheels. I'm not sure why, perhaps it has to do with steering. (Any die-hard truck guys out there know why?) The hub on rear wheels is usually (...) (22 years ago, 7-Jun-02, to lugnet.town)
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