Okay.... I'll give a shot. center of mass (COM) position = zcom off the ground Assume tires don't skid and the front wheel and rear wheel are aligned. 1. I'm...
... Okay, I already realized I made a mistake. I did the wrong area :). I'm on the right track, though... at least I hope so! ... This is instead the area...
Dang sorry folks. Sunny here in CT. Wish you all could enjoy the beautiful autumn day here instead. Seems like more early rain there than usual. Poop - I love...
Dan, How do you account for wheelbase being a variable? Fred ... From: Dan Connelly To: lkhc@yahoogroups.com Sent: Saturday, November 01, 2008 6:20 AM Subject:...
Dan's assumption: "Assume tires don't skid and the front wheel and rear wheel are aligned." is the one the problem makes. If you look at the tire tracks for...
Well I figured out the IBM puzzle and mailed in my submission. I'd be surprised if I was the first one to answer it though. Also last night I took a stab at...
Keith, If it doesn't involve calculus then I'm guessing another assumption is that the curve is constant (it's not an equation that describes change)? Fred ......
This all assumes front wheel steering! Today at Tech Shop there was a bike someone altered that had a headtube with handlebars welded in between the top of the...
http://funstufftosee.com/frogleaptest.html Second grade computer test in China. Can you get leap across the puddle? Barry ... From: Kevin Winterfield...
Okay, I have to take a stab at this... I have not been able to come out yet this season but here is a chance to participate. I couldn't pass up a private...
Okay, Dan B. got it! This is a classic Archimedes-type argument, a clear precursor of integration. Think of the bike as a straight line from the front wheel...
The line FR is not tangent to the arc of the rear wheel. The axle of the front wheel and the axle of the rear wheel each point to the center of the circle...
Hey Al, I agree that in the real world FR would not be tangent to the path of the rear wheel, but since bicycle handling is a complicated problem you need some...
Comments on Al's suggestion and Dan B's comment. Absent any lateral motion (i.e., skidding, controlled or otherwise) a wheel moves only in its plane. Thus the...
The key on these problems is differentiating good differential arguments from bad ones. A bad differential argument: break the path from (x1, y1) to (x2, y2)...
... Actually, here I think you are jumping ahead if you are considering a real bicycle. If we consider that the front contact patch trails the steering axis,...
Sounds right, Dan. As always, math can solve only idealized problems in an exact way, and then only if they are linear, in most cases! I wish more people were...
I scoped out Lomas Cantadas with Patrick Gordis today. Ouch -- that hurts! :) It's a tough climb, one which you really shouldn't miss. Patrick was quite...
Twice I've been bitten by using mapmyride.com elevation data, first at Bear Gulch, next at Lomas Cantadas.... I updated the Lomas Cantadas elevation profile...
Dan: Did you investigate the possibility of leaving El Toyonal at Alta Vista Drive, then taking Camino Del Monte to Lomas Cantadas? This would avoid the short...
I just recalled (and the photo verifies, as does street view) that there's a "No Through Traffic" sign at the entrance to Alta Vista Way, which is the route to...
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