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Author Topic: Half built Hugh Piggot turbine.  (Read 70710 times)
offthegridandy
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« on: January 30, 2015, 08:06:39 PM »

Next stage in the WT plan.

I have just successfully bid on a half built HP turbine, an un finished project (10 yrs old). http: www.ebay.co.uk/itm/Wind-turbine-/171652762182?pt=UK_BOI_Industrial_Tools_Generators_ET&hash=item27f74d4a46

This will count as a birthday present to bring me hours of unmitigated  joy and fun. I'll pick it up tomorrow and find out how good a gamble this is. Described below.

Part completed wind turbine project with plans designed by Hugh Piggott who is a world authority on turbines.
2 large laser cut disks with 12 neo magnets embedded into each
Wooden mould for casting disks into fibreglass
3 rotor blades carved out of wood
Head assembly welded
Hugh Piggott design included
Requires tail furling assembly, central disk comprising coils and wiring loom. Finishing, painting,

So I see a few hours workshop coming up.  Clockman, did you post some photo sequences on winding coils some time ago? If so, could you show a link through if you have a moment to spare some time.

To be continued

Andy

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clockmanFR
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« Reply #1 on: January 30, 2015, 09:12:46 PM »

Hi Andy,
Looks like the 2.4m dia version. I belive this particular Hughs design is open source, so you might still have to buy Hughs Book, 'A Wind Turbine Receipe Book' to get the small things sorted and Hugh's methodoligy.

I see the stator with the coils needs making yet, which In away is good, as you can choose the voltage output.  Grin Treat the mags with a rust remover then really dry out and treat with that POR15 paint.

Have fun.

Here you are, although the mechanism/tail offset etc are slightly different with my bigger machines, and the coils and magnets are more in number.
The winding machine and methods are also explained in Hughs Book.
http://www.navitron.org.uk/forum/index.php/topic,17156.0.html

Coils are straight in on page 1..................Gosh  faint this old posting for my No 3 Turbine was nearly 3 years ago.! ballspin


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« Last Edit: January 30, 2015, 09:22:32 PM by clockmanFR » Logged

Everything is possible, just give me TIME.
clockmanFR
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« Reply #2 on: January 30, 2015, 09:14:27 PM »

and...



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clockmanFR
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« Reply #3 on: January 30, 2015, 09:17:51 PM »

and....


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Billy
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« Reply #4 on: January 30, 2015, 09:22:23 PM »

Andy, I thought these vids on the tewb were good in terms of what's done.  you could get an idea and then follow the plans.  Most excellent, what fun.  You just might inspire me.....  assuming it goes ok mind.   Grin


« Last Edit: January 30, 2015, 09:24:24 PM by Billy » Logged
camillitech
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« Reply #5 on: January 30, 2015, 10:28:40 PM »

Good luck with it Andy, I was looking at that one myself.

Cheers, Paul
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« Reply #6 on: January 30, 2015, 10:35:01 PM »

Yes Andy,
          The very best of luck with your new purchase. Someday ,someday, I will pick up the courage and have a go at one myself but meantime,I am happy with china,s best Grin.
    There is great wind at the moment,you need to hurry up or it will,be all gone, Grin
                                                                                            Biff
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« Reply #7 on: January 31, 2015, 08:40:27 AM »

Hats doffed Andy. Good luck on your project. With CM on hand you have someone who has read the book seen the film and eaten the pie! Look forward to following this thread.
 
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offthegridandy
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« Reply #8 on: January 31, 2015, 07:48:31 PM »

Cheers guys.  Well we went out today and picked up my new kit, it's still all out in the back of the truck.  Have to say everything was very much as described. From looking at the advert piccys I'd thought the blades looked as if they were possibly hard wood, ash or elm perhaps.  Well it turns out there all 3 carved out of Irroco, so they may weigh a bit heavier than the standard soft wood pattern. Don't know what implication to read from that.

Any way along with the kit was the original 2005 instruction manual/plans, excellent. So 1st thing on the shopping list is copper wire. Thank you so much CM for the pictures, I'd have figured out about putting the tape in the former before winding the coil when on the last but one probably. I have to cast on set of magnets, there all set in their former ready to go.  And then the coils .  Finally they tail is not started at all, so quite a few steps to complete.

Onwards and upwards then.

Cheers.

Andy

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8 KVA Lister TS2 Startamatic Genny
24 Volt 1000amp battery bank
Outback VFX3024
4.6 Kw PV array permanently ground mounted
Outback Flexmax 80
2 X Flexmax 30 PV CC
2.5 Kw wind turbine H Piggot design 4.5 Mtr Dia
12 Mtr free standing Tower.
u/floor heating from oil boiler cross linked to 12 Kw
guydewdney
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« Reply #9 on: February 01, 2015, 08:33:02 AM »

Is the slight unevenness of the coil spacing deliberate, irrelevant, or insignificant?
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clockmanFR
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« Reply #10 on: February 01, 2015, 10:12:37 AM »

Hi Guy,
The coil is max about 12mm wide, and with the copper enamelled wire being 1.8mm dia on the copper, I am struggling with 6 to 7 wires in the 12mm space. As Hugh says, "try and keep a neat tight coil and run from one side to the other in even spacing". hhmm doesn't always go to plan so hence a slight wobble sometimes.


Andy,..... I wind the coil first using Hugh's design of winder, its in his book, and there is clearance of about 1.5mm under the coil to push the insulation tape through.
 No, I do not put the tape in first before winding, but if you look at the Pic, I attach the  tape to the end of an old thin mainspring from a clock, push the steel spring through with the tape end stuck on and wrap over and repeat a couple of times.
Oh yea, use decent insulation tape, I once used some stuff that a couple of weeks later had all unravelled.  sh*tfan
Keep the wire tight when winding or unwinding, if you make a mistake, if not tight then expect a Birds Nest.  sh*tfan 

Wax them moulds, wax them moulds so the casting will come out okay.
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Nickel2
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« Reply #11 on: February 01, 2015, 11:46:17 AM »

Good find Andy.

It looks like a lot of thought has gone into this project before you got it.
I had a quick look at 'Iroko' on the interweb. It is a hardwood similar to teak, with good rot and resistance to attack.
The wood identification sites say that the dust can cause sensitisation, so probably worth doing any sanding of the blades outside.
Looking forward to seeing this one run.

N2
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« Reply #12 on: February 01, 2015, 12:29:31 PM »

I was on about coil to coil, as in the 8mm or so gap between each coil. The picture looks like some are touching, some are 10mm gap. I might assume the centre point of each coil is bang on, just some coiled tighter than others? Otherwise wouldnt you get a sort of wup wup wp wp wp wp wuuuup wuuup wup wp effect......but much faster than that iyswim
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clockmanFR
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« Reply #13 on: February 01, 2015, 12:40:54 PM »

Hi Guy,
Its the space in the middle that needs to align up with drawn space on the back board, but that gets difficult when the coils all wired up are slid into the mould for casting on top of a layer of fiberglass matt. I put lines on the base mould so I can line the coils up with a straight edges, so I am not that far off with equal spacing.

The first resin pour is wet so it soaks into everything.
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offthegridandy
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« Reply #14 on: February 21, 2015, 07:08:49 PM »

A small couple of steps at last.  The senior partner and I have spent the last hour winding and weighing drums of copper wire.  I'd ordered 3K as per HP's spec and of course it came on one reel, but I have to wind 9 coils each with 2 wire per coil.  So I set up an old wooden cable drum on a piece of 1 inch copper pipe plus a piece of broom stick fixed with a screw as a winding handle. So we wound and weighed making allowance for the weight of the drum and when we'd reached 2.5 K finished weight we looked at the 2 drums and said they'ver never got equal quantities on each. So we ended up winding the whole lot off getting an new set of scales, calibrating against a kilo of sugar and started again.

We now have 2 drums with 1.5K of wire on each.  Also yesterday I picked up the fibre glass supplies for casting the rotors and stator.  I've just had some wet room floors cast in fibre glass for a new shower block trailer I'm building and when I collected them I blagged the resin etc.

So now to make the winding jig for the actual coils, I'll have a rootle in the shed for plywood tomorrow. And a further study of CM's pics
« Last Edit: February 21, 2015, 08:17:34 PM by offthegridandy » Logged

8 KVA Lister TS2 Startamatic Genny
24 Volt 1000amp battery bank
Outback VFX3024
4.6 Kw PV array permanently ground mounted
Outback Flexmax 80
2 X Flexmax 30 PV CC
2.5 Kw wind turbine H Piggot design 4.5 Mtr Dia
12 Mtr free standing Tower.
u/floor heating from oil boiler cross linked to 12 Kw
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