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FJR Motorcycle Forums
Technical & Mechanical Problems
Intermittent Shifting Problem
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<blockquote data-quote="charismaticmegafauna" data-source="post: 740282" data-attributes="member: 665"><p>Hmmm..., Not quite: The rear wheel is a direct connection to the transmission layshaft and they will (or won't) turn together. The transmission mainshaft (input shaft), though, is connected directly to the clutch inner basket. When 'in gear', if/when the inner clutch basket moves the bike moves. However, if one wants to shift a stopped-in-gear, running, motorcycle (constant-mesh g/box) one really needs to merely 'break the flow of power' to "unload" the pressure in the gear-dogs to allow for them to slip out-of-'couple'. When in between gears -- leaving one and sliding to another -- you're 'in neutral' (not the real "neutral"); but, transmission gear not locked to a transmission shaft.</p><p></p><p>It's the "un-loading" process that's of real importance here. It's all a constant mesh transmission needs for shifting -- allowing the gear dogs to realease. The clutch, itself, should be enough to provide that -- if it releases fully and doesn't drag. Blipping the throttle and cycling the clutch are also valid techniques to accomplish that.</p><p></p><p>All that said, <u>good</u> motorcycle transmissions (and I consider the FJR's to be one) can be shifted -- even at full power -- with just a flick of the toe <em>without</em> the benefit of clutch release (but that may be for another thread...?). :blink:</p></blockquote><p></p>
[QUOTE="charismaticmegafauna, post: 740282, member: 665"] Hmmm..., Not quite: The rear wheel is a direct connection to the transmission layshaft and they will (or won't) turn together. The transmission mainshaft (input shaft), though, is connected directly to the clutch inner basket. When 'in gear', if/when the inner clutch basket moves the bike moves. However, if one wants to shift a stopped-in-gear, running, motorcycle (constant-mesh g/box) one really needs to merely 'break the flow of power' to "unload" the pressure in the gear-dogs to allow for them to slip out-of-'couple'. When in between gears -- leaving one and sliding to another -- you're 'in neutral' (not the real "neutral"); but, transmission gear not locked to a transmission shaft. It's the "un-loading" process that's of real importance here. It's all a constant mesh transmission needs for shifting -- allowing the gear dogs to realease. The clutch, itself, should be enough to provide that -- if it releases fully and doesn't drag. Blipping the throttle and cycling the clutch are also valid techniques to accomplish that. All that said, [U]good[/U] motorcycle transmissions (and I consider the FJR's to be one) can be shifted -- even at full power -- with just a flick of the toe [I]without[/I] the benefit of clutch release (but that may be for another thread...?). :blink: [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Intermittent Shifting Problem
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