kelabar
Senior Member
Posts: 399
Likes: 469
|
Post by kelabar on Jun 17, 2020 21:53:50 GMT 10
I have a couple of hand powered grinders, the type where you bolt them to the edge of a bench, wind the handle and this is geared up to spin the grinding wheel. I like them but grinding really needs two hands to do it accurately.
A couple of limited experiments to convert them to foot operation with a pedal or treadle haven't worked. Has anyone done any foot-powered conversions on tools?
I'm not sure if a flywheel was needed to maintain rotation or whether the angles or lengths of the connecting rods and pedals were out. I'm not looking at anything fancy at this stage. Steel 'axles' running through oiled wood would do for initial versions. Bearings would be used with future versions once the design works. Any info or experiences would be appreciated. Pics would be a gift from heaven. TIA.
|
|
tomatoes
Senior Member
Posts: 1,065
Likes: 1,089
|
Post by tomatoes on Jun 18, 2020 9:07:53 GMT 10
I have no idea about tools like grinders and this is likely completely different - but I know you can convert old singer sewing machines from electric to hand crank to treadle. I wonder if anything in how you convert hand crank machines to treadle would help?
|
|
|
Post by spinifex on Jun 18, 2020 15:05:46 GMT 10
Interesting one I saw was a bike with the seat moved to up where handlebars normally are, facing backwards, and a belt run off the rim to operate a grinder.
Many years ago ... before camera phones ... so sadly no pictures. Just food for thought. Never used it or saw it used either so hard to say what the operation was like.
|
|
pugs
Full Member
Posts: 86
Likes: 155
|
Post by pugs on Jun 18, 2020 18:11:05 GMT 10
Surely you could convert a mountain bike or racer to run almost any motor type tool using the dereiler ( spelling ?) and gears to get the spindle up to speed , if it can be done with alternator systems then a bit of time and engineering it could be done ....
|
|