The Butterfly Lane

Butterfly, beautiful to watch, difficult to train. We SDK off every wall. We're most likely to smack hands with each other and those beside us. Fly's fun to sprint but no fun when the piano comes down What did you do in practice today? the breastroke lane The Middle Distance Lane The Backstroke Lane The Butterfly Lane The SDK Lane The Taper Lane The Distance Lane The IM Lane The Sprint Free Lane The Pool Deck
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  • Former Member
    Former Member
    Ahalee: thanks for the tip compilation! At the start of this year I got a pair of the aquasphere fins and they weigh almost nothing compared to most fins, so are more convenient to lug around, and they are made of a very soft almost foam like material and are the first fins I've had that I haven't had any problems with abrasion with. For anyone with fin abrasion problems these are worth a try. Last week I was in Montreal and met "SolarEnergy" from this forum and learned quite a bit. One thing I was amazed by was how flexible ankles can be, and how inflexible mine were! It made me wonder whether differences in kicking technique might be caused by differences in ankle flexibility, and whether fins might be a different experience for those with and without flexible ankles. It seems logical that good ankle flexibility provides forward propulsion with a much smaller kick amplitude. Basic physics would say that the downbeat of the kick stops being propulsive once there are no surfaces with a backward facing component, so unless you can point your feet past 180 degrees your downbeat stops giving forward propulsion when it reaches horizontal, and in reality the forward component becomes very small well before that. Perhaps this is why swimmers with inflexible ankles, when given a kickboard naturally gravitate toward a large from-the-knee dolphin kick?
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  • Former Member
    Former Member
    Ahalee: thanks for the tip compilation! At the start of this year I got a pair of the aquasphere fins and they weigh almost nothing compared to most fins, so are more convenient to lug around, and they are made of a very soft almost foam like material and are the first fins I've had that I haven't had any problems with abrasion with. For anyone with fin abrasion problems these are worth a try. Last week I was in Montreal and met "SolarEnergy" from this forum and learned quite a bit. One thing I was amazed by was how flexible ankles can be, and how inflexible mine were! It made me wonder whether differences in kicking technique might be caused by differences in ankle flexibility, and whether fins might be a different experience for those with and without flexible ankles. It seems logical that good ankle flexibility provides forward propulsion with a much smaller kick amplitude. Basic physics would say that the downbeat of the kick stops being propulsive once there are no surfaces with a backward facing component, so unless you can point your feet past 180 degrees your downbeat stops giving forward propulsion when it reaches horizontal, and in reality the forward component becomes very small well before that. Perhaps this is why swimmers with inflexible ankles, when given a kickboard naturally gravitate toward a large from-the-knee dolphin kick?
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