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Forum Index : Windmills : WindSeeker 503 blades
| Author | Message | ||||
| Wind Seeker Newbie  Joined: 19/10/2010 Location: Posts: 6 |
Hello out there, I am looking for blades (3 blade model) for my Wind Seeker 503 wind turbine. Any ideas would be great - suppliers or other blades we might be able to use. Cheers, |
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| VK4AYQ Guru  Joined: 02/12/2009 Location: AustraliaPosts: 2539 |
Hi Windy Could you please give some more details on your mill so we could work out what blades would suit it. All the best Bob Foolin Around |
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GWatPE Senior Member  Joined: 01/09/2006 Location: AustraliaPosts: 2127 |
Hi Wind Seeker, the windmill is a Southwest Windpower mill. It is like the Whisper with furling, but with blades like the Air-X. Replacement blades should still be available from Southwest as they are still listed. Gordon. become more energy aware |
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| Wind Seeker Newbie Joined: 19/10/2010 Location: Posts: 6 |
Hi Bob, The blades are: 1.52 meters Weight 22.5 lbs (10.2kg) Start up speed 7 mph (3m/s) 500 watts pm 3 phase brushless output voltage 29.5 Any help would be great, thanks heaps, |
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| Wind Seeker Newbie Joined: 19/10/2010 Location: Posts: 6 |
Hi Gordon, Getting anything like service out of SouthWest is unbelievably hard. Do you have a good contact by any chance or could you point me in the right direction to find out exactly what they have listed? Cheers |
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| Wind Seeker Newbie Joined: 19/10/2010 Location: Posts: 6 |
Hi Gordon, Getting anything like service out of SouthWest is unbelievably hard. Do you have a good contact by any chance or could you point me in the right direction to find out exactly what they have listed? Cheers |
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| VK4AYQ Guru Joined: 02/12/2009 Location: AustraliaPosts: 2539 |
Hi Windy I have a set of 60 inch dia blades if you get stuck they are rated at 600 watt at 12,5 ms aluminum hub with taper I was experimenting with them, but went for larger dia blades due to low wind in my area. All the best Bob Foolin Around |
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| Wind Seeker Newbie Joined: 19/10/2010 Location: Posts: 6 |
Hi Bob, We are really interested to follow up on your blades, how do we get in contact with you? Our hub has a 25mm centre. |
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Downwind Guru Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
A 20 second search on google and i found info on blades and 2 suppliers in Adelaide, I dont know why you have so much trouble locating them, have you bothered to look or hope someone else will do the leg work. Try here......... http://www.windenergy.com/products/air.htm You will need to click on find a dealer at the bottom of the page to locate a supplier near you. Pete. Sometimes it just works |
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| Wind Seeker Newbie Joined: 19/10/2010 Location: Posts: 6 |
Hi Pete, Well following your (lovely!!) email I rang all the SouthWest dealers (Again!!!) with no luck, rang America and emailed overseas. Maybe you have another suggestion that is useful? Windy |
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MacGyver Guru Joined: 12/05/2009 Location: United StatesPosts: 1329 |
Windy & Crew I copied the following information from the page in Pete's link: 38 kWh/mo at 12 mph (5.4 m/s) 46 in (1.15 m) Then, out of curiosity, I took the information and plugged into Alton's Blade Calculator, where in a 12 mph breeze, the power available at the blade is 32 watts! A little math (24 hours / day x 30 days = 720 hours). At 32 watts per hour, even if the wind was a constant 12 miles an hour and even if it blew like that all day and all night every day (not likely unless it's in Antarctica maybe) I come up with (720 x 32) 2304 watts. That's 2.3 Kilowatt Hours, which falls a measly 35.7 THOUSAND watt-hours short of their claims. Under the assumption that their measurement is per blade, a blade diameter of twice 1.15 (2.3m) yields a whopping 127 watts available at the blade in that same wind. That translates to 9144 watt hours or 9.144 kilowatt hours and still falls 28.56 THOUSAND watt hours short! Am I missing something here? . . . . . Mac Nothing difficult is ever easy! Perhaps better stated in the words of Morgan Freeman, "Where there is no struggle, there is no progress!" Copeville, Texas |
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| VK4AYQ Guru Joined: 02/12/2009 Location: AustraliaPosts: 2539 |
Hi Mack I have tried these type of blades and they are not like the Altons blade calculator, a 6 blade 62"diameter performs a little less than a 8 ft three blade and the 11 blade 68" one performs better than the 8 ft 3 blade above 8ms and also starts in less wind but is lacking below 6.5 MS. Even though you can factor in the extra blades to the formula it makes no difference to the calculated results, but in fact there is a big difference. Altons calculator works OK with a 2 to four blade clark Y type airfoil but doesn't work with the high speed airfoils on these blades. I have a 3 blade 62" clark y type blade and it wont even start till 4 ms, whereas the 3 blade 62" starts at 2.5ms and is generating 100 watts by the time the clark Y blades start up at 4 ms. They have a lot higher TSR and during one heavy wind they got to 1600 rpm. These are some of the blades I have been testing 
The six blade was the best compromise for the alternator tested on a 600 watt unit The white blades where the original blades and needed 12 ms to get the same output as the 6 blade at 8 ms, the 10 blade set started earlier and overdrove the alternator at 8.5 ms better for low speed power but not enough to go the extra expense. I tried them on the other mill and they did over 50 amps at 30 volts in gusts of 12 t0 15 ms. I found that none of the testing conformed with Altons formula with these high speed blades, but the 2.8 meter 3 blade I have on it at the moment is close to the mark. All the best Bob Foolin Around |
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| GWatPE Senior Member Joined: 01/09/2006 Location: AustraliaPosts: 2127 |
Hi Mac, There are a few traps that come into play with weather data, particularly average windspeeds. My weather station DAVIS brand, calculates an average daily windspeed. This is the linear average, and does not provide any weighting for wind distribution. take for instance the average windspeed of 12mph you quoted giving 32W for the blade, and resulting in 0.76kWh/day. with a uniform distribution over the day, this would give the value 0.76kWh/day. however, if the wind blew for half the day, at 24mph, and half the day was nil, the result would be 1.536kWh/day. The average windspeed would still be 12mph, but the wind power available would be double. This is why the wind distribution is so important, and why I provided a harvested energy distribution function on my windmill analyzer. I won't harp on here as this thread is supposed to be about finding some blades. Gordon. become more energy aware |
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