[{"data":1,"prerenderedAt":154},["ShallowReactive",2],{"crumb-\u002Fstories":3,"stories-index":4},null,[5,73,114],{"id":6,"title":7,"body":8,"date":62,"description":63,"draft":64,"extension":65,"image":20,"imageAlt":66,"kicker":3,"meta":67,"navigation":68,"path":69,"pinned":64,"seo":70,"stem":71,"__hash__":72},"stories\u002Fstories\u002Ffive-hard-stops.md","Five hard stops",{"type":9,"value":10,"toc":58},"minimark",[11,15,24,31,37,40,43,49],[12,13,14],"p",{},"Emergency braking is a drill with a number at the end of it: how quickly the bike stops. On September 29, Rich rode five hard stops from 21 to 27 mph, and two sensors measured them.",[16,17,21],"fn-plate",{":chart":18,"alt":19,"src":20},"true","Stopping distance, entry speed and peak deceleration for five emergency stops","\u002Ffield-notes\u002F2026-09-29-countersteer\u002Fcharts\u002Fbraking.svg",[12,22,23],{},"Stopping distance from the moment the brakes came on, with entry speed and peak deceleration for each stop.",[12,25,26,30],{},[27,28,29],"strong",{},"GPS gave the speed."," A phone's GPS position wanders too much to measure a parking-lot drill, but its speed is good to a fraction of a mile per hour. That gave the entry speed for every stop.",[12,32,33,36],{},[27,34,35],{},"A camera fixed to the frame gave the deceleration."," Its own motion sensor recorded how hard the bike slowed, a thousand times a second.",[12,38,39],{},"The brakes came on hard and fast: 80% of peak deceleration within 0.2 to 0.3 seconds, every time. Peaks reached 0.73 to 0.82 g. The last few miles per hour came off gently, so the average over a whole stop was only about half the peak.",[12,41,42],{},"For comparison, eleven ordinary traffic stops on the road that day peaked at 0.14 to 0.34 g. The gap between an everyday stop and an emergency stop is exactly what the drill trains.",[12,44,45,48],{},[27,46,47],{},"The distances need checking."," The analysis puts the stops at 38 to 55 feet. (Rich still complains that he thinks he stopped quicker than that.) He remembers stopping in under three parking spaces, though maybe not on these runs, so the next step is to measure the lot's stall lines and test again against them.",[12,50,51,52,57],{},"The full write-up: ",[53,54,56],"a",{"href":55},"\u002Ffield-notes\u002F2026-09-29-countersteer\u002F","Countersteer, caught on two cameras",".",{"title":59,"searchDepth":60,"depth":60,"links":61},"",2,[],"2026-10-02","Emergency-braking reps, measured with GPS speed and a camera fixed to the frame. The brakes come on fast. How far the bike travels is still an open question.",false,"md","Stopping distance, entry speed and peak deceleration for five hard stops",{},true,"\u002Fstories\u002Ffive-hard-stops",{"title":7,"description":63},"stories\u002Ffive-hard-stops","VyMW1IeCRiLP9_-SrCvMMHjjpxEwaegGcNOQoccwh9I",{"id":74,"title":75,"body":76,"date":62,"description":107,"draft":64,"extension":65,"image":84,"imageAlt":108,"kicker":3,"meta":109,"navigation":68,"path":110,"pinned":64,"seo":111,"stem":112,"__hash__":113},"stories\u002Fstories\u002Fright-turns-lean-further.md","Right turns lean further",{"type":9,"value":77,"toc":105},[78,81,88,91,94,97,100],[12,79,80],{},"On September 29, a camera fixed to the frame recorded the bike's lean through every drill. In every drill that turned both ways, Rich leaned further going right than going left, by 2 to 6 degrees in most of them.",[16,82,85],{":chart":18,"alt":83,"src":84},"Median peak lean in left and right turns for each drill, right leaning further","\u002Ffield-notes\u002F2026-09-29-countersteer\u002Fcharts\u002Fleft-right.svg",[12,86,87],{},"Median peak lean per turn, left in blue and right in orange. The labels give each side's median turn radius in meters and the number of turns.",[12,89,90],{},"A motorcycle in a steady turn needs a certain amount of lean. It depends on how fast the bike is going and how tight the turn is. It doesn't depend on which way the bike is turning. A right turn and a left turn at the same speed and size need the same lean.",[12,92,93],{},"The turns were about the same size both ways, 6 to 7 meters (20 to 23 feet) in radius. In the figure eight and the dual U-turn, the right turns were slightly wider, which should have needed less lean, not more.",[12,95,96],{},"So the difference isn't the physics. It's the rider. Plenty of riders have a side they favor, and the fix is simple: ride more of the harder side. The hard part is knowing which side that is. That's the kind of thing MotoDrill should be able to point out.",[12,98,99],{},"This is one session, one rider and a handful of turns each way. It's a first look, not a verdict.",[12,101,102,103,57],{},"The full write-up, with every chart: ",[53,104,56],{"href":55},{"title":59,"searchDepth":60,"depth":60,"links":106},[],"In every turning drill, Rich leaned a few degrees more going right than going left. The physics says he shouldn't, which makes it something to practice.","Peak lean in left and right turns for each drill, right leaning further",{},"\u002Fstories\u002Fright-turns-lean-further",{"title":75,"description":107},"stories\u002Fright-turns-lean-further","7L6RbVFZZ3FYGZYYG9CAZInz4cvG_mEV4VdJXMPI7L4",{"id":115,"title":116,"body":117,"date":62,"description":147,"draft":64,"extension":65,"image":125,"imageAlt":148,"kicker":3,"meta":149,"navigation":68,"path":150,"pinned":64,"seo":151,"stem":152,"__hash__":153},"stories\u002Fstories\u002Fyour-bars-turn-the-wrong-way-first.md","Your bars turn the wrong way first",{"type":9,"value":118,"toc":145},[119,122,129,132,135,138,141],[12,120,121],{},"To lean a motorcycle into a right turn, the handlebars first turn a little to the left. Then they come back to the right and the bike follows. It's called countersteering. Every rider does it, and most never notice.",[16,123,126],{":chart":18,"alt":124,"src":125},"Average handlebar angle around turn-in at 10 to 20 mph: the bars turn away from the turn first, then into it","\u002Ffield-notes\u002F2026-09-29-countersteer\u002Fcharts\u002Fsteer-hero.svg",[12,127,128],{},"Handlebar angle around turn-in at 10 to 20 mph, averaged over 12 turns. Down is away from the turn. The pink band is the shape countersteering should make; the solid line is what the cameras measured.",[12,130,131],{},"On September 29, Rich rode on the road with two cameras on the bike. One was on the handlebars and turned with them. The other was on a stick fixed to the frame, and didn't. Both cameras record their own motion, so taking one from the other leaves just the steering.",[12,133,134],{},"At 10 to 20 mph, the bars turned away from the turn first in 10 of 12 turn-ins. The average was 0.73 of a degree. That's too small to see and too small to feel, and it was there almost every time.",[12,136,137],{},"These were ordinary road turns, at corners and junctions, not drills. At walking pace the dip looked bigger: about 1.8 degrees, in 9 of 10 turn-ins. That's only ten turns, so it's an early result. If it holds, it fits the physics: a slow bike needs more input to tip it into a lean, and as speed rises the bike steadies itself and needs less. Above 20 mph there were only four turn-ins, not enough to say anything yet.",[12,139,140],{},"One more thing came out of the same session, this time from the drills. At the same speed and the same radius, Rich leans 2 to 6 degrees further in right turns than in left ones. The physics asks for the same lean both ways, so that difference is the rider. It's the kind of thing MotoDrill should be able to point out.",[12,142,102,143,57],{},[53,144,56],{"href":55},{"title":59,"searchDepth":60,"depth":60,"links":146},[],"Two cameras on one ride caught the countersteer every rider does without knowing it. It's less than a degree.","[object Object]",{},"\u002Fstories\u002Fyour-bars-turn-the-wrong-way-first",{"title":116,"description":147},"stories\u002Fyour-bars-turn-the-wrong-way-first","MYBE2FXZ-H9_32QG542tKaUgyVknd_8W_bO7SnOFkvw",1791483522243]