Hi. Thank you for your respond. To achieve this you could do a simple copy of the handle and scale it once. Then use another copy and substract it via boolean operation. Maybe that helps. Best regards

Thanx. I already seen this approach. I'm not sure if this is the solution, but it's a fact that the momentarily used Windgenerators are not as efficient as could be. Also the possibility of storeing the windenergy in Hydrogen is not explored enough in my opinion. Even if the coefficient of H2 is not...

openBrain wrote: ↑Fri Dec 20, 2019 6:39 pm

rubylion wrote: ↑Fri Dec 20, 2019 3:03 pm Coming from another threat..

May the force be with you !

Fröhliche Ferienzeit für die deutschsprachige Gemeinschaft.

Danke. Ebenso.
So bissl Macht, macht halt was her

webmanoffesto wrote: ↑Sat Dec 21, 2019 4:08 am Check out https://openergo.webs.com/ I know there's a variation that's a Water Rower.

Thanx for the tip.
They got a waterpump version. Although not bad, I think I stick to the original. But if you like to build a rower with a wind turbine, it's worth a look

Coming from another threat..
Merry Christmas 2019 to all of you.
I wonder: with what speed does the tree has to turn itself, to hold the balls in position, while they 'want' to roll down by gravity

WOW
This is crazy. Too bad I'm not paragliding. And if I did I'm not sure if I'd construct my own glider (to the grave?)
But anyways. Very impressive

to chrisb:

You could do your laundry with it

Yeah right?! What you need: - Some wooden planks (whatever you like, can be your bedframe or your wife's wardrobe) - Some bike handle - A bike gear of a one gear drive; preferable a hub gear - A few transfer rolls - Some ball bearings - Some shutter cord - A rubber band - A carabin - Some seatmateri...

Mmmmhhhh: You asked for it
https://forum.freecadweb.org/viewtopic.php?f=24&t=41822

Hey . Eversince I saw 'House of Cards', I wanted to have this waterrower. The more I was shocked, when checkin out, how much it is. I always thought, this can't be so difficult to build myself. So I fired up FreeCAD... (well, wasn't that easy of course ;) ) The more I was workin on this, the more I ...