Subject:
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Re: What's the difference?
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Newsgroups:
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lugnet.technic
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Date:
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Mon, 8 Jan 2007 18:26:40 GMT
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Viewed:
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6595 times
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Hello All,
Nice and correct description, Luis.
A range changer would have a ratio of 1:4 in this example. (16z/16z and
32z/8z)
A Splitter would have a ratio of 1: 1.25. (16z/16z and 16z/12z)
Hmm, these ratios are a little bit hard to build though...
Greetings
Maico Arts
Luis Hernández schreef:
> In lugnet.technic, Steve Lane wrote:
>
> > Between a splitter and a range change on a truck gearbox?
> >
> > I know what the difference is functionally, what I want to know is the
> > mechanical difference. I've tried Google without much luck.
> >
> > Thanks.
> >
> > Steve
>
>
> Mechanically, I would think of the splitter as an additional gearbox. Using the
> same example Maico gave, you have a 4-speed plus reverse gearbox. The splitter
> would be simply an additional 2-speed gearbox.
>
> Suppose the ratios in the 4-speed gearbox (I won't care about the reverse, but
> it would be the same) are the following (using Lego Technic gears):
>
> 1st: 24/8 = 3.00
> 2nd: 20/12 = 1.66
> 3rd: 16/16 = 1.00
> 4th: 12/20 = 0.60
>
> And the ratios in the splitter would be
> High: 16/16 = 1
> Low: 24/8 = 3
>
> Lets look at the deffinitive ratios (total ratio= gearbox ratio * splitter
> ratio)
>
> ~Speed
> ~1st
> ~2nd
> ~3rd
> ~4th
>
> ~Range High, splitter low: splitter high
> ~3.00 2.25
> ~1.66 1.00
> ~1.00 0.75
> ~0.60 0.25
>
> ~Low:
> ~12.00
> ~6.40
> ~4.00
> ~2.40
>
> In total you would have 4 x 2 = 8 speeds. But, if the ratios aren't chosen
> carefully, there would be dupilcated speeds, as in this case. However, AFAIK, in
> Lego the choice of gears is very limited, so we'll have to live with that.
>
> The gearbox would be operated by the gear lever (I don't know well how to say it
> in English, excuse me), and the splitter would be operated by the switches at
> the top of the gear lever.. well, Glen explained that part better.
>
> Hope this helps.
>
> Luis <<http://www.brickshelf.com/gallery/lmhariano/Me/colombia.gif>>¬
> (comments, instructions, death threats, etc. please remove all the X's)
>
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Message is in Reply To:
 | | Re: What's the difference?
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| (...) Mechanically, I would think of the splitter as an additional gearbox. Using the same example Maico gave, you have a 4-speed plus reverse gearbox. The splitter would be simply an additional 2-speed gearbox. Suppose the ratios in the 4-speed (...) (18 years ago, 8-Jan-07, to lugnet.technic, FTX)
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