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 01:47:44 GMT
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Viewed:
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6293 times
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In lugnet.technic, Steve Lane wrote:
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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
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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 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)
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 
(comments, instructions, death threats, etc. please remove all the X’s)
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Message has 1 Reply:
 | | Re: What's the difference?
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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... (...) (18 years ago, 8-Jan-07, to lugnet.technic)
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Message is in Reply To:
| | Re: What's the difference?
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| (...) Yes, and keep in mind that the advantage with an 18speed transmission that I described in my last post,is that you could go through your low gears without splitting them, flick into high range and split whichever gears you want...gives you (...) (18 years ago, 23-Dec-06, to lugnet.technic)
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