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Forum Index : Windmills : Quad Rebuild
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fillm Guru  Joined: 10/02/2007 Location: AustraliaPosts: 730 |
Hi all , Thought I'd take a few pic's of the 2nd Quad I have been putting together , as the #1 hit the deck the other day I rebuilt it and then went straight onto finishing #2 with the ideas fresh im my head on making it stronger , even though it was a guy rope anchor that failed ... 
#2 frame/chassis , I am thinking of using aluminum to sheet the tail and then add weight to the back tail cavity to get more controll over furling 
strengthened the tail support as this is directly welded to the yaw bearing so the head can easily be removed . 
Shows the stator head at full piviot to get max ofset, tail has been removed off its hinge , then undo the 1" bolt and the stator head comes off . 
Stator head removed , which on these will have all the rectifiers mounted on the head and the DC can now run through the centre of the top piviot pole , this will allow me to fit three upper guy ropes 1.6 mtrs below the head and hopefully not have a repeat of last saturday. And after all this work the quad stator might get shelved or the back two stators cut off as the capacitor testing results start to enlighten me , as I discussed with Gordon , a quad with caps could break through 2+KW ? and would need of course blades to suit. Anyway I am going to start another thread on the progress on setting up the test bench and hopefully keep everyone updated with its progress.. PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits |
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GWatPE Senior Member  Joined: 01/09/2006 Location: AustraliaPosts: 2127 |
Hi phill, pics do not want to load for me. I have tried to manually open as well, but to no avail. You may need to edit the post to fix it. Gordon. PS edit. thanks phill. become more energy aware |
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| fillm Guru Joined: 10/02/2007 Location: AustraliaPosts: 730 |
Hi Gordon, I havn't got a clue why they didn't load , hophully Glenn can fix the problem with his bigger "hammer" PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits |
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Gizmo Admin Group  Joined: 05/06/2004 Location: AustraliaPosts: 5118 |
Fixed it, the # used in the image name was causing problems. With any uploaded photo's, avoid any special characters, just stick with standard letters and numbers. I still remember the good old days of 8 letter file names. 
Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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| fillm Guru Joined: 10/02/2007 Location: AustraliaPosts: 730 |
Thanks Glenn will have remember to watch my ##*%$!*&*!!!!ing characters ...  ..Phill..PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits |
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| GWatPE Senior Member Joined: 01/09/2006 Location: AustraliaPosts: 2127 |
Hi Gizmo, wasn't that AAAAAAAA.xxx Gordon. become more energy aware |
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oztules Guru Joined: 26/07/2007 Location: AustraliaPosts: 1686 |
Nice looking build Phil. I like the variable offset head mount, although I would like to pin it when you determine the best spot. I know it is amply strong....the bolt looks big enough to hold a ship,... but I just feel queasy having a single bolt used on a torque point with vibration. (bad history here )
If you are going to mount the diodes at the head, where will the caps be? .........oztules Village idiot...or... just another hack out of his depth |
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| fillm Guru Joined: 10/02/2007 Location: AustraliaPosts: 730 |
Hi Oztules , Good Question , any suggestions , I can apparently link all the AC together and run 3 wires down as long as all the stators are the same and as they are all in phase and then do the cap's and rec's at the batt's. The bolt has never looked like coming loose if tight as there isn't a lot of vibration at the piviot arm and it is 1/2" plate , but I did forget to tighten it once  PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits |
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| Dinges Senior Member Joined: 04/01/2008 Location: AlbaniaPosts: 510 |
Good to see a new turbine is in the making. Guess the yard looks a bit empty now without the pole and genny flying on top of it. 
One small (but important) detail: in your 2nd picture I see a few plain nuts. Make sure that in the final build they are replaced by other locknuts (mediocre but infinitely better than plain nuts) or the plain nuts are properly locked using a locking compound (Loctite or similar) or mechanical locking means (castle nuts, locking plates, locking wire, etc.; my personal preference for locking over Loctite or nylocks) You do NOT want any removable fastening hardware on dynamically loaded structures (such as windmills) that can vibrate loose. A spring-washer does NOT do the job. [quote=Oztules]but I just feel queasy having a single bolt used on a torque point with vibration. [/quote] I'm not as worried as Oztules is about this, as long as you make sure the nut and bolt are properly locked. Properly installed splitpin with castlenut would make it look really professional too... Looking forward to seeing it proudly fly once more. Peter. |
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| fillm Guru Joined: 10/02/2007 Location: AustraliaPosts: 730 |
Hi Dingies, The nuts you can see in pic 2 are for adjusting the tail angle to keep the blades at 90% to the wind , they are threaded through from the inside through the stop tabs and have washers under the heads to allow adjustment ,the nuts are used as locks . Be carefull when using nyloc nuts as they are usually lower grade steel and are prone to splitting when tensioned to grade 8 specs , but agree that loctite 271 is definatly the best to stop bolts/nuts comming loose PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits |
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| fillm Guru Joined: 10/02/2007 Location: AustraliaPosts: 730 |
Heres a couple of shots of the blades that hit the ground at 700+rpm on the logger that I have started to re-shape . I must say that these ABS blades are tuff , I don't think any other material would have survived to be able to be put back into service . Weight is a draw back but once up to speed they are like a a big flywheel and can carry some energy through direction changes . The tip width is now down to 60mm from 80mm and I think this is going to be a lot better for the TSR . Having 16mm of material thickness allows me to get quite a good airfoil out in the end 1/3 of the blade where it counts . Working with ABS is a bit of a pain but I am getting better and devising quicker ways of removing the unwanted material . 
PhillM ...Oz Wind Engineering..Wind Turbine Kits 500W - 5000W ~ F&P Dual Kits ~ GOE222Blades- Voltage Control Parts ------- Tower kits |
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