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Everything Dirt Bike
General Dirt Bike
Gear Ratios/Engine Resistance
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<blockquote data-quote="SRAD97750" data-source="post: 94851" data-attributes="member: 425"><p>Math time.</p><p> </p><p>Lets say for shits, this KTM 65</p><p>FINAL DRIVE ratios (engine:wheel)</p><p>1st ( 11.25 :1) 11 engine revolutions per one wheel rev</p><p>6th ( 4.26:1 ) 4 engine revolutions per one wheel rev</p><p> </p><p>A 2T, single cylinder motorcycle has one compression stroke per revolution. (~200psi)</p><p>So while turning the rear wheel in first gear you will encounter 11 compression strokes.</p><p>Turning the rear wheel in 6th gear you will encounter 4 compression strokes.</p><p>SO, 1st gear would give you more "resistance per inch"</p><p> </p><p>BUT, in my experience, neither gear will help breaking a bolt loose as there is no "solid" resistance to actually break it loose. I use the rear brake HARD with a larger cheater bar.</p><p> </p><p>Good luck!</p></blockquote><p></p>
[QUOTE="SRAD97750, post: 94851, member: 425"] Math time. Lets say for shits, this KTM 65 FINAL DRIVE ratios (engine:wheel) 1st ( 11.25 :1) 11 engine revolutions per one wheel rev 6th ( 4.26:1 ) 4 engine revolutions per one wheel rev A 2T, single cylinder motorcycle has one compression stroke per revolution. (~200psi) So while turning the rear wheel in first gear you will encounter 11 compression strokes. Turning the rear wheel in 6th gear you will encounter 4 compression strokes. SO, 1st gear would give you more "resistance per inch" BUT, in my experience, neither gear will help breaking a bolt loose as there is no "solid" resistance to actually break it loose. I use the rear brake HARD with a larger cheater bar. Good luck! [/QUOTE]
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