Boat building blog

Last summer I built a boat. Check it out!

"The things I tried and that didn't work"

Click here to view the presentation

Final Hamblet Post

Image Gallery

Thanks to everyone who attended!

Hamblet: Prototype for a motorized cello capo

Today I ordered the v-belt, pulleys, and bearings from McMaster-Carr which will be used to transmit power between the the old cordless screw driver motor and the lead screw. Here's how this works:

1) The motor turns the v-belt (shown in green)
2) The v-belt turns the lead screw
3) The lead screw turns the welded wing nut up or down because its a threaded shaft
4) The wing nut pushes the capo train
5) Capo train squeezes the neck, effectivly changing length of the strings

The sliding capo design will be used to control the pitch of the cellos while cellocycling during the performance. I'll post video as soon as the parts arrive and I've got this all working.

Hamblet: The sound of a bicycle powered cello pt. 2

Horse Hair Test.