Thumb Throttle for servo tester

thingiverse

*Edit, 11/05/2020 redesigned the housing and thumb throttle lever to accept a M4 grub screw to limit the throw, my kid was going way too fast in public spaces. Also added a version with a tiny brake lever that depresses a small button to activate the brake. the lever is tiny, if anybody needs i can draw a much bigger one. Bike build info here: https://endless-sphere.com/forums/viewtopic.php?f=6&t=105643 I built a electric bike for my 3 year old while in lockdown. Used a brushless motor from a plane, a car esc and a servo tester. needed the throttle body to hold the tester. So drew it up one evening. This is mk2, it just needed a few tweaks to be perfect. You need: 5x 10mm M3 bolts, preferable cap screws as the allen key is nice and easy to fit into tight corners. 2x M5 bolts and nuts +- 20mm of thread. a few tiny rubber bands like you get with braces for your teeth. The gearing here turns the servo tester from middle to full as we were using a RC car ESC. If you want a longer throw for an aeroplane esc let me know and i'll try draw it up. *edit, added a version of the smaller gear that has a smaller id to fit more snug on the servo tester. Now you have both options. :-)