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Subject: 
Re: LEGOdometer
Newsgroups: 
lugnet.technic, lugnet.trains
Date: 
Wed, 13 Aug 2008 04:33:39 GMT
Viewed: 
19048 times
  

Nice box !

I ran most ratios through a pathetic microsoft product to derive a comparible metric read-out for those that made the transition from the stone age.

put simply: 1 1:12 3 20:36 1 16:24

produces 1:104.9 at 95.5mm per rotation or for every 10.026 meters.

2.6 meters error per Kilometer.

I only ran declining ratios to a factor of 8, so there may be a result with less error using either more sequences or a combination of delining and increasing torque combinations.

I’ll try to put one together for the next SLTC show using two cars. The lead car showing kilometers, the trailing car to show 100ths and 10s of meters plus hold the gear box.


I imagine the same could be done to calculate yards, lightyears or parsecs if so inclined....

hm, the same BB wheel would need to turn 99,058,539,174,952,789 times to travel a lightyear...

Steve

   
         
     
Subject: 
Re: LEGOdometer
Newsgroups: 
lugnet.technic, lugnet.trains
Date: 
Wed, 13 Aug 2008 05:10:24 GMT
Viewed: 
19357 times
  

In lugnet.technic, Stump Dunn wrote:
   I ran most ratios through a pathetic microsoft product to derive a comparible metric read-out for those that made the transition from the stone age.

Don’t you mean those who reverted back to the stone age? I mean, the metric system is based entirely on being able to calculate stuff using your fingers, where the Imperial System requires better multiplication skills than your average monkey is likely to possess.

    
          
     
Subject: 
Re: LEGOdometer
Newsgroups: 
lugnet.technic, lugnet.trains
Date: 
Wed, 13 Aug 2008 11:34:29 GMT
Viewed: 
19441 times
  

   system is based entirely on being able to calculate stuff using your fingers,

Beats a system based entirely on units of toes !

Steve

   
         
   
Subject: 
Re: LEGOdometer
Newsgroups: 
lugnet.technic, lugnet.trains
Date: 
Wed, 13 Aug 2008 17:29:37 GMT
Viewed: 
19224 times
  

In lugnet.technic, Stump Dunn wrote:
   I ran most ratios through a pathetic microsoft product to derive a comparible metric read-out for those that made the transition from the stone age.

put simply: 1 1:12 3 20:36 1 16:24

produces 1:104.9 at 95.5mm per rotation or for every 10.026 meters.

2.6 meters error per Kilometer.

I only ran declining ratios to a factor of 8, so there may be a result with less error using either more sequences or a combination of delining and increasing torque combinations.

I ran my VB program and came up with the following:

7 x 20:36
7 x 16:24

which produces an error of 0.991 meters per kilometer.

Of course, packaging that many gears is probably a bit challenging ... but I’ll bet you can do it ;)

 

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