Hoop Base vs Flange Base
- Thread starter robertwh
- Start date
sunshine_eggo
Happy Breffast!
Wind Resources
Rule 1: The power rating of a wind turbine has NOTHING to do with the amount of power you'll get. The amount of power you get depends on the size and efficiency of your wind turbine, and your wind. The power rating of a wind turbine is just its...
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sunshine_eggo
Happy Breffast!
Moral obligation/community service. Wind is a losing proposition for most and many don't understand the basics.
Awesome. Good luck.
OzSolar
Whatever you did, that's what you planned.
I have a bit of experience with small wind but I'm not sure what you're referring to by hoop vs flange.
sunshine_eggo
Happy Breffast!
Personally, I've never seen the hoop type, but from a structural standpoint, flange is much more favorable. The hoop has a built-in stress concentration:
All bending loads pass through this radius. The big fat radius helps, but this type of connection has a dramatically lower load limit than the flange type.
EDIT: I can see the appeal though... simply clamp it onto a pole instead of needing a flange on the pole too.
All bending loads pass through this radius. The big fat radius helps, but this type of connection has a dramatically lower load limit than the flange type.
EDIT: I can see the appeal though... simply clamp it onto a pole instead of needing a flange on the pole too.
Last edited:
OzSolar
Whatever you did, that's what you planned.
To support and build on sunshine_Eggo's attempt to be nice I'll offer the two things that I've learned from over 30 years being around this stuff.
1- 98% of people do not have a site even remotely feasible for small wind but even if you are in the 2% there's not any turbines out there worth buying.
2- I've personally installed and removed dozens of small wind turbines from pretty much every manufacturer ranging in cost from a few hundred dollars to well over $50k and I'm pretty sure none of them even produced enough energy to even pay for the wire between the turbine and the power center before they were abandoned in disgust. Sadly it took me a few years to figure that out but at I've never installed another one.
If you want to play around with wind keep in mind it's probably just going to piece a of piece dynamic yard art. Small wind is cool but solar will produce 10x more energy for the same investment and still be working in 10 and even 20 years.
It all depends on what you're trying to mount it to. Do you have a tower yet?
hoop = "slip fitter" That's the most common mount. Normally that goes on a pipe tower being held up by a guy wires.
Flange would be bolted to the top of a lattice style tower that has a flat plate on top like below.
Don't have the tower yet, so that's why I'm trying to determine the best/easiest mount you use.
And yes, I understand the issues, but I live on an island in the Caribbean and the wind is awesome (or a pain in the butt, depending on how you view it).
And yes, I understand the issues, but I live on an island in the Caribbean and the wind is awesome (or a pain in the butt, depending on how you view it).
OzSolar
Whatever you did, that's what you planned.
What is your average wind speed?
So can you purchase a pole with the flange piece attached to bolt the turbine to, or do you have to make it? And if you can purchase it, where's the best place to buy it?
OzSolar
Whatever you did, that's what you planned.
You're bolting the turbine down to a factory made flat plate that is welded or bolted to the tower like the picture above.
The Rohn 45G* used to be a pretty common tower for the smaller turbines because it was already being widely used for lots of other applications and if you keep your eye out they can be picked up used pretty cheaply.
*of course you'll want an engineer to sign off an anything you put together yourself
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