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Forum Index : Windmills : Making blades with a ChainSaw
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| Dinges Senior Member  Joined: 04/01/2008 Location: AlbaniaPosts: 510 |
Thanks for the photos, I was a bit curious what your setup looked like, especially the 275A DC controller. I was sort of expecting a thing the size of a small 19" rack; yours is much smaller than I expected. Nice looking setup, compact and portable. With a bit of automation it would make the ideal dumpload for guerilla grid-tied. Or, using a 3-phase induction motor instead of the present 1-phase one you could even generate your own 3-phase power for the workshop (I understand you use a rotary-converter for that at the moment?). Your setup is basically indirect grid-coupled, except you've replaced the fancy inverter with a down-to-earth induction motor: http://www.windpower.org/en/tour/wtrb/indirect.htm If I were to try it as an experiment I'd probably use a small 3phase motor, remove as many loads from the house/workshop, and see if I can make the (very old, analog) power meter spin backwards, if only for a few minutes. Just curious, don't answer if you don't feel like doing so on a public forum: if you some day plan to install a grid-connected turbine... would you go through all the paperwork to connect it... or go guerilla? Have had a look over here for the Belgian rules & regulations w.r.t. grid-tie windpower... and after reading all the legalese... I think I'd pass on their kind offer and go at it alone (i.e. off-grid DC system, only for private use). As far as waterproofing goes: have you considered using plain epoxy? The hotglue may melt during normal operation of the controller? Then again, the hotglue can be easily removed later again in case of future repairs. Looks like you're having way too much fun on your deserted island... Peter. |
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oztules Guru  Joined: 26/07/2007 Location: AustraliaPosts: 1686 |
I don't think Ghurd would approve of no hot glue at all. I may blow it up again, so hot glue is good. Otherwise I would have used resin (epoxy). Can't go guerilla here, everyone knows what everyone does. It would be secret for 10 mins tops... A short term fiddle can be tolerated, and in fact this set up could well be used to charge the batteries.. ie motor generator... perfectly legal... but.. if the batteries are higher.... Not my fault if the 1440 rpm is too slow to charge the batteries..now is it. That was yesterday, since then the device has been dismantled. The motor and the curtis controller (1204)is to be used on a small Electric Vehicle... 
..........oztules Village idiot...or... just another hack out of his depth |
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| Dinges Senior Member Joined: 04/01/2008 Location: AlbaniaPosts: 510 |
[quote]... Not my fault if the 1440 rpm is too slow to charge the batteries..now is it. [/quote]  |
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GWatPE Senior Member Joined: 01/09/2006 Location: AustraliaPosts: 2127 |
Hi oztules, what is with the digital calipers? I still have to make do with the analogue version and a maggy lamp. Gordon. become more energy aware |
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| oztules Guru Joined: 26/07/2007 Location: AustraliaPosts: 1686 |
My eyes are getting too old for the vernier, and I can still stuff up with the digital ones  .
.......oztules Village idiot...or... just another hack out of his depth |
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Bryan1 Guru Joined: 22/02/2006 Location: AustraliaPosts: 1464 |
Well I'm still using the dial verniers I got for my 21st birthday no batteries to go flat or head aches trying to read 100 yr old technology.  the deal is ya yet Mitutoyo or Moore&Wright, Starret brands and although expensive they will last a life time.  On the subject of grid tie this black duck won't have a bar of it as as far as I'm concerned we'll never be on the grid FULLSTOP 
Now the chainsaw blades do sound like an easy way to make a set but my keen eye will do a scan over a certain copy machine and design one up so any RE guy who has the drive can make their own. Well while I'm going.... (rant) 4 years ago when we told people we lived off the grid we got comments like:- do you live in a cave, man it must get hot in summer, how could you life without tv etc. Now when I tell people they ask how can we get off the grid so we can have power when the grid cuts out all the time
(<rant) If the city slicker with their plasma's just bothered to read this thread or a few others on this forum Oz would be a better place for it. Cheers Bryan |
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| brucedownunder2 Guru Joined: 14/09/2005 Location: AustraliaPosts: 1548 |
Yeah,,we hear ya, but how do ya keep ya beer cold ?? Bushboy |
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imsmooth Senior Member Joined: 07/02/2008 Location: United StatesPosts: 214 |
Check this Youtube link: Video cutting blades |
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| Jarbar Senior Member Joined: 03/02/2008 Location: AustraliaPosts: 225 |
Yeah,imsmooth smoking!!!! "Creativity is detirmined by the way you hold your tounge".My Father "Your generation will have to correct the problems made by mine".My Grandfather. |
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| oztules Guru Joined: 26/07/2007 Location: AustraliaPosts: 1686 |
Well that proves it quite conclusively 3 minutes 37 seconds to cut the twist into a 5 foot blade.... you hold the world record now. It would take lots longer than that just to mark the second blade to cut it traditionally.... and you don't have to even do that.... who said it took too long to carve a blade from wood.... quicker than pvc. Too cool 
More video's to come? .......  oztulesVillage idiot...or... just another hack out of his depth |
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| KiwiJohn Guru Joined: 01/12/2005 Location: New ZealandPosts: 691 |
Bryan, if you are considering a copy machine like the one in the topic I posted, well make sure you use a big router!
I finished my copy machine and it is really good for what I wanted to do and that is to cut holes in sheets from a template but for 3D it is a real slow way to go. |
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| angeraer Newbie  Joined: 09/12/2008 Location: BelgiumPosts: 2 |
Hello, Let me tell you what it takes to connect to the grid. 'nothing' :-) The only device we use is a Phoenix Contact relais that connects the generator to the grid at a certain rpm. In our case 1490 rpm. Thats the rpm when the generator starts to generate current. Regards, Andy. (the belgian guy from the windmolensite :-) |
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| Jarbar Senior Member Joined: 03/02/2008 Location: AustraliaPosts: 225 |
Hello Andy(angeraer) and thanks to Peter(Dinges) for the link to your website.Truly an inspiring project and an excellent presentation.I tried to log on to your Forum yesterday but was nonexistant???.My wife is from Belgium and your site is forcing me to learn more Flemmish and more about windmolen.Where in Belgium is you mill as I would love to visit your project.If 1490rpm is the minimum generating speed what is the maximum.It just seems fast for such a big mill?? Or is a gear reduction occuring between blades and generator.More flemmish lessons required. Proficiat and welcome to this forum. Anthony "Creativity is detirmined by the way you hold your tounge".My Father "Your generation will have to correct the problems made by mine".My Grandfather. |
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| Jarbar Senior Member Joined: 03/02/2008 Location: AustraliaPosts: 225 |
Andy,just checked and forum is back online.And I see that the reduction is 20:1 Thanks. I know of a good Dutchman who could translate!!!!! but then maybe I should ask my wife.Ouch!! Anthony "Creativity is detirmined by the way you hold your tounge".My Father "Your generation will have to correct the problems made by mine".My Grandfather. |
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| Robb Senior Member Joined: 01/08/2007 Location: AustraliaPosts: 221 |
Ok so how do you do the other side of the blade? Thats the bit I havn't come to grips with yet. If a picture speaks a 1000 words that must be in the millions. |
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| oztules Guru Joined: 26/07/2007 Location: AustraliaPosts: 1686 |
Simply make a second jig to match the other profile of the blade, flip blade over, place in jig, make sawdust.... just the same but different jig. I hope he makes a second video
..........oztules Village idiot...or... just another hack out of his depth |
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| Dinges Senior Member Joined: 04/01/2008 Location: AlbaniaPosts: 510 |
[quote=Andy]Andy. (the belgian guy from the windmolensite :-) [/quote] Hello Andy, Nice to see you've found your way to this forum. Have visited your website quite a few times. Can't help but say I'm very impressed with the work you guys have done with such limited means. A very professional job. Where in Belgium is the windmill located somewhere? And is it running again? Jarbar/Anthony, There is a gear-reduction incorporated in that windmill. There is a *lot* of information (esp. pictuers) on his website, I'd simply try to click everything there is to click... Here is the gearbox: http://windmolensite.be/reductie.html
Hmm... clicking on that link redirects to the homepage... if you're interested in the gearbox, click on 'reductie' (reduction, gearbox) in the index. He's using a 20,1:1 (20,2:1) Leroy-Somer gearbox. Peter. |
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wdyasq Newbie Joined: 29/07/2008 Location: United StatesPosts: 21 |
An interesting site with a lot of pictures for us language challenged Americans. Ron Adventure is just bad planning." -- Roald Amundsen |
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| angeraer Newbie Joined: 09/12/2008 Location: BelgiumPosts: 2 |
In Lanaken, near Maastricht. It's been running for 1,5 years now. Regards, Andy. |
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| imsmooth Senior Member Joined: 07/02/2008 Location: United StatesPosts: 214 |
Some time back I posted a video showing me carving blades with a chainsaw using Oztules idea. Here is a link to final product. The finished images are at the bottom of this page. |
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