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NickD
NickD MegaDork
2/6/21 8:01 a.m.

Donebrokeit
Donebrokeit UltraDork
2/6/21 12:03 p.m.

What is it? 

Very interesting looking. Kind of Alfa but not.

 

 

914Driver
914Driver MegaDork
2/6/21 12:31 p.m.

Looks like the rarely seen, highly prized AlfaStang.

In a paper entitled, It Takes Two Neurons To Ride a Bicycle, Matthew Cook mapped the path of 800 unmanned bicycles until they fell over.

 

 

TurnerX19
TurnerX19 SuperDork
2/6/21 2:37 p.m.

In reply to Donebrokeit :

The dimensions and visible mechanicals say 105 or 115 series Alfa. Who did the mustang copy coachwork is the real question.

TurnerX19
TurnerX19 SuperDork
2/6/21 2:39 p.m.

Peabody
Peabody UltimaDork
2/6/21 4:49 p.m.

RX Reven'
RX Reven' GRM+ Memberand SuperDork
2/6/21 5:07 p.m.
914Driver said:

Looks like the rarely seen, highly prized AlfaStang.

In a paper entitled, It Takes Two Neurons To Ride a Bicycle, Matthew Cook mapped the path of 800 unmanned bicycles until they fell over.

 

 

I just spent twenty minutes exploring the meaning, drawing inferences, and soaking up the pure beauty of that image.

I haven't read Matthew's article yet so I don't know if he did this for art or for math (obviously, it's both).

I see four main cycle groupings and they're following a Fibonacci sequence of peaking at further and further distances (plus there appears to be a separate grouping nested between cycle grouping two and four).

Counterintuitive at first since there's less gyroscopic stability the further you go but with an N of 800, you've got to be open to what the data is trying to tell you.

I suspect flutter is the cause...above a certain velocity, random energy in one direction tends to cause a catastrophic crash on the other side of the oscillation (speed wobble in pain English).

If you survive scrubbing off enough velocity, the oscillations tend to be below a catastrophic level and you go further...in this case, that appears to be happening at that special grouping between oscillation two and three (notice how it deviates less from the center line than oscillation two or three - I'm calling it, it's special, it's different).

Image result for thank you meme

 

Appleseed
Appleseed MegaDork
2/6/21 6:05 p.m.
Donebrokeit said:

What is it? 

Very interesting looking. Kind of Alfa but not.

 

 

Kinda Mustang if you ask me.

 

JamesMcD
JamesMcD SuperDork
2/6/21 7:27 p.m.

It's an FNM Onca, made in Brazil (there's more than one of them).

 

Appleseed
Appleseed MegaDork
2/6/21 7:47 p.m.

Remember Moose from You Can't Do That On Television ​​​​​​?

Appleseed
Appleseed MegaDork
2/6/21 8:16 p.m.

Donebrokeit
Donebrokeit UltraDork
2/6/21 8:53 p.m.

Nope,nopenope.....

 

 

 

 

Donebrokeit
Donebrokeit UltraDork
2/6/21 8:55 p.m.

 

Peabody
Peabody UltimaDork
2/7/21 11:20 a.m.

DonnonGT
DonnonGT New Reader
2/7/21 12:21 p.m.
914Driver said:

Looks like the rarely seen, highly prized AlfaStang.

In a paper entitled, It Takes Two Neurons To Ride a Bicycle, Matthew Cook mapped the path of 800 unmanned bicycles until they fell over.

 

 

 

It looks like someone fired a slug made of compressed pubic hair into ballistic gelatin.

Pete. (l33t FS)
Pete. (l33t FS) GRM+ Memberand MegaDork
2/7/21 12:34 p.m.
Appleseed said:

Paging Streetwiseguy

Wally (Forum Supporter)
Wally (Forum Supporter) GRM+ Memberand MegaDork
2/7/21 1:10 p.m.

In reply to DonnonGT :

That's an interesting mental image 

 

nocones
nocones GRM+ Memberand UberDork
2/7/21 3:19 p.m.
914Driver said:

Looks like the rarely seen, highly prized AlfaStang.

In a paper entitled, It Takes Two Neurons To Ride a Bicycle, Matthew Cook mapped the path of 800 unmanned bicycles until they fell over.

 

 

I think it's amazing that 0/800 unmaned bikes fell over in the direction of their initial turn. They all went left then fell over right or vice versa.  

Which makes it all the more amazing when my kids fell over nearly immediately always on the side of initial turn.

RossD
RossD MegaDork
2/7/21 4:32 p.m.

fasted58
fasted58 MegaDork
2/7/21 7:16 p.m.

Donebrokeit
Donebrokeit UltraDork
2/7/21 8:21 p.m.

 

Donebrokeit
Donebrokeit UltraDork
2/7/21 8:21 p.m.

 

Appleseed
Appleseed MegaDork
2/7/21 9:23 p.m.

Roberto Clemente was a Marine.

Gary
Gary UltraDork
2/7/21 9:32 p.m.

Duke
Duke MegaDork
2/8/21 8:24 a.m.

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