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Forum Index : Windmills : F&P Windmill Question
| Author | Message | ||||
| Geoff Bramwell Newbie  Joined: 01/05/2010 Location: New ZealandPosts: 2 |
Hi, I am currently making the F&P windmill with the directions that i found on this website. I currently need to construct the tail but i have no idea on the size that it should be. any help would be much appreciated.  |
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fillm Guru  Joined: 10/02/2007 Location: AustraliaPosts: 730 |
Hi Geoff, Tail size in my opinion should be a Min of .5~.7sqmt and also having the tail as long as you can with whatever construction mehod you are using , of course as you lengthen and add size to the tail fin it will have an effect on your furl piviot angles . Going with a long tail allows you to keep the fin to a minium size and allows the mill to keep into the wind with a smoother yaw action . As you have not given any info on how big your mill is, then at a ball park I would recomend a tail length of 3/4 of Blade Dia PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits |
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JimBo911 Senior Member  Joined: 26/03/2009 Location: United StatesPosts: 262 |
Geoff Photos are always appreciated. (if possible) Jim |
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| Geoff Bramwell Newbie Joined: 01/05/2010 Location: New ZealandPosts: 2 |
Here are some pictures, hope they can help. Geoff 
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| KarlJ Guru Joined: 19/05/2008 Location: AustraliaPosts: 1178 |
Nice one Geoff, going along well. Make sure when you're done to give it as best a clean up as you can and I', a big believer in cold gal or hammerite, both seem to stand up to the elements well. I cant help but offer a word of wisdom when it comes to re-wire options. Delta with a cap doubler gets you the best of both worlds. I'd also add that the prop should be no more than 2.2m diameter as this will easily start up and yet give you good top end which a larger prop may not do... Anyone who has opinion contrary feel free to rebutt! eco-innovation have a wide range of prop options we dont have over here, perhaps drop them a line if you need a prop/hub. Karl Luck favours the well prepared |
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imsmooth Senior Member Joined: 07/02/2008 Location: United StatesPosts: 214 |
Geoff, If you are going the F&P route, you can read my web tutorial (beginning part) here It goes into all details about building the F&P windmill, which will complement the other reading material. I hope this helps. |
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| JimBo911 Senior Member Joined: 26/03/2009 Location: United StatesPosts: 262 |
Geoff Ridge(heavy)is good, if you feel a little unsure about reliability or strength then do not hesitate to go a bit heaver especially with your yaw assembly. Looks as though you've decided to base your mill on Glens well crafted machine. Not knowing the size of your mill makes it difficulty to tell for sure but I am thinking that the angled rod extending from your yaw assembly might be to light for a auto furling tail mount. On closer observation you will notice that Glen placed extra support in this area. Be sure to allow enough room between the support mast and the blades, 5% to 7% tilled (blades)back away form the mast will usually help with blade to mast clearance. Job well done. Jim |
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