Logged in diaries / Re: VAWT backyard experiements
« Last post by Mary B on May 23, 2024, 11:07:15 AM »That's a great spot for you mill.
How much space will you put between the ground and the bottom of the rotating body ?
That depends.
The rotating body might be dig in so no no longer require guy wires.
But My eventual goal is to have the arms rotate close to the ground/structure that holds them.
So we can have them floating if all is engineered out enough.
But in direct answer to your question in this specific scenario it is a little more than 120CM above grass level.
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Even though that the rotating body does still spin on the grass at like 10 CM elevation.
Hence my idea to dig them in or submerge them somehow. These columns
But in the end of the day the level of the arms should be situational. For me it is as high so long they to not cut my other projects.
#2That's a great spot for you mill.
How much space will you put between the ground and the bottom of the rotating body ?
I would like to debate what is the difference between a mill and a turbine?
I think I know. Please let me know if I am mistaken.
A mill is a wind/ water turbine driven machine that mills something. usually grain or the likes.
Hence we are no longer milling anything I think we should be able to call it turbines yes?
Or at the very least chargers(of batteries)
Please just accept my emotional response because I feel about these things. As my country "invented" mills (that is probably not true at all)
So I just am a bit of a strickler regarding that.
#3Lawn mowers have used a magnetic clutch system for decades. Your answer to torque at a certain point might use a similar method to kick in a bigger load or to brake.
Yes brother, I have no idea what you meant there. Please elaborate and I will be sure to do the same.
#4
Please let me get this out there!!
Should anyone know how to create a 1:30 drive. then please do not be shy..
I can maybe get to 22, even more perhaps 24 x!! and that is including knowing that the drive will become the weak point and break down rather fast!!!
1:30 stable? any ideas gang?
Structure that can take a beating, is not very large(12" on a face) and only 5' tall. Has held a 9 square meter wind load with no problem. Available commercially all over the world and used 10' pieces can be found for $75 in good shape, $50 with a bend at one end(so cut it off! You don't need a 10' tall support!). Called Rohn 25g tower. Will handle your VAWT no problem when set in a block of concrete 4x4x4 foot square. Mine is set on angle iron legs that are in the concrete so water can drain from the legs and not freeze in winter, or rot the legs with rust in summer. If setting in concrete the bottom 2" of the legs must be set in gravel then concrete poured around the rest.
The dish antenna that was on this folded in half in a 100mph wind gust... tower section suffered zero damage!