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How to Set-up and use a pedal-powered tennis ball launcher

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Do you want to get a cardio work out, tone your lower body and help a friend improve his tennis game? Watch this video which demonstrates how to set up and use a bicycle pedal-powered tennis ball launcher.

Apple's iOS 26 and iPadOS 26 updates are packed with new features, and you can try them before almost everyone else. First, check Gadget Hacks' list of supported iPhone and iPad models, then follow the step-by-step guide to install the iOS/iPadOS 26 beta — no paid developer account required.

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