Hello all, I am building a 1kw axial flux turbine and want to know: is a furling tail a necessity? I purchased the 10' diameter, 3 blade fiberglass blades...
1916
Steve Spence
sspence65
Dec 3, 2008 5:50 pm
A straight tail will keep the blades in the wind. A furling tail will move the blades out of the wind when the unit overspeeds, preventing coils from from...
1917
Michael Vanecek
mikevanecek
Dec 3, 2008 6:36 pm
And even furled, the mill will still spin - just at more sane speeds. I'd not recommend going without furling capability..... Be well, Mike -- Zone 8, Texas ...
1918
ke5fdh
Dec 3, 2008 8:25 pm
A furling tail protects at least three things; your tower, your turbine and your blades. Sounds like your blades might be covered. You might want to sacrifice...
1919
Aaron McCoy
theringoffire67
Dec 4, 2008 12:23 am
Okay, how about the tower then. This may be a bad idea, but I was considering using television antennae towers, with guide wires. I am not sure where to get,...
1920
Steve Spence
sspence65
Dec 4, 2008 12:30 am
A lattice tower with (or without) guy wires is possible, but needs to be engineered for the size of the wind turbine and the maximum wind speeds your location...
1921
Aaron McCoy
theringoffire67
Dec 5, 2008 2:11 pm
How do I make a furling tail where the alternator is mounted in the center of the pipe? Most all of the instructions I have found have had the generator and...
1922
Steve Spence
sspence65
Dec 5, 2008 2:19 pm
The tail is offset and angled, and gravity makes it work. Due to some comments about our tail, we tried a design modification, and added a "T" to the tower...
1923
Michael Vanecek
mikevanecek
Dec 5, 2008 3:33 pm
Look closer at the http://www.otherpower.com layout. The alternator is off-set and not on the center. Gravity on the tail keeps the mill oriented properly...
1924
Steve Spence
sspence65
Dec 5, 2008 4:28 pm
Our design however does keep the alt centered and not off-set. we tried offsetting due to some advice we received, and found little difference. The off set...
1925
Steve Spence
sspence65
Dec 6, 2008 11:05 pm
These are a bit smaller than the ones we normally use, but will still generate at least 500 watts. Check them out at http://www.green-trust.org/products/ We...
1926
Mark McElvy
mmcelvy
Dec 7, 2008 1:27 am
How much are the bigger ones? Mark ________________________________ From: axialflux@yahoogroups.com [mailto:axialflux@yahoogroups.com] On Behalf Of Steve...
1927
Steve Spence
sspence65
Dec 7, 2008 1:34 am
$160 for the set of 24. 2" x 1" x 0.5" Thick Neodymium Iron Boron NdFeB Block Magnet Grade N50, the highest grade available 14,700 Gauss Rating ...
1928
Mark McElvy
mmcelvy
Dec 7, 2008 1:53 am
Are these the ones w holes for screws? Mark ________________________________ From: axialflux@yahoogroups.com [mailto:axialflux@yahoogroups.com] On Behalf Of...
1929
Steve Spence
sspence65
Dec 7, 2008 1:54 am
No, I don't have enough orders for those to meet the minimum order. Steve Spence http://www.green-trust.org...
1930
m lynn
mlynns
Dec 7, 2008 5:15 am
how many more do you need for the minimum to get the ones with the hole ... From: Mark McElvy <mmcelvy@...> Subject: RE: [axialflux] $36 for set of 24...
1931
Steve Spence
sspence65
Dec 7, 2008 5:17 am
I need 4 more orders of 24 to meet the minimum. Steve Spence http://www.green-trust.org...
1932
Mark McElvy
mmcelvy
Dec 7, 2008 2:30 pm
Are these the same price? If so, my neighbor and I might be interested. Mark ________________________________ From: axialflux@yahoogroups.com...
1933
Steve Spence
sspence65
Dec 7, 2008 2:39 pm
The N50's with 2 double countersunk screw holes are $17 each, plus shipping. A deposit of 50% will allow me to get the manufacturing order in. These are custom...
1934
Dan Fink
danbob88
Dec 7, 2008 6:05 pm
Our design however does keep the alt centered and not off-set. we tried offsetting due to some advice we received, and found little difference. The off set...
1935
Wes Jones
wesjones21
Dec 7, 2008 10:14 pm
It costs $10 per magnet to drill those holes? Best, wes On Sun, 07 Dec 2008 09:39:18 -0500, Steve Spence <sspence@...> ... -- Listen to what they...
1936
Steve Spence
sspence65
Dec 7, 2008 10:19 pm
It's a bigger, more powerful magnet. And yes, it's expensive to get the holes manufactured into the magnet. You can't "drill" a hole in the magnet. Having...
1937
Steve Spence
sspence65
Dec 7, 2008 10:24 pm
We reached our minimum order. If you want a set of these, please get your order in now. It may be a while before we can place another order. -- Steve Spence ...
1938
Steve Spence
sspence65
Dec 7, 2008 10:26 pm
We will also have the hydrocut steel rotor plates with predrilled magnet holes available shortly. Steve Spence http://www.green-trust.org...
1939
Neil Dennis
wombat_eagle
Dec 7, 2008 10:26 pm
Just wondering, I'm guessing the holes are countersunk for a flat head bolt, also, can you iron (steel) or do you use brass? wombat...
1940
Steve Spence
sspence65
Dec 7, 2008 10:27 pm
We provide flat head brass machine screws with the magnets. Steve Spence http://www.green-trust.org...
1941
Wes Jones
wesjones21
Dec 7, 2008 11:02 pm
OK, makes more sense now with that informaton. I don't understand why a drilling process wouldn't work though. Best, wes On Sun, 07 Dec 2008 17:18:57 -0500,...
1942
Steve Spence
sspence65
Dec 7, 2008 11:14 pm
If you could get a drill bit through the material, I'm pretty sure you'd find it brittle and prone to breakage, as well as affecting the strength of the...
1943
Wes Jones
wesjones21
Dec 7, 2008 11:45 pm
I may. I can't get past that they're over twice the price with holes...even if they are a little bigger. Best, wes On Sun, 07 Dec 2008 18:14:12 -0500, Steve...
1944
Steve Spence
sspence65
Dec 7, 2008 11:46 pm
Shipping from China is a killer. Steve Spence http://www.green-trust.org...
