HELP NEEDED BY NEWBIE

[jonny]

HI THIS IS MY FIRST POST IM IN THE UK HAVING BUILT A FEW VERY SMALL WIND TURBINES MAINLY FROM BIKE DYNAMO,S AND ONE AMETEK MOTOR IM NOW PLANNING TO BUILD A 4 FOOT SINGLE MAGNET ROTOR FROM HUGH,S PLANS.IM USING 2"X1"X 1/2" GRADE 40 MAGNETS AND WAS PLANNING ON USING 1.4MM WIRE WITH 85 TURNS (12 VOLT MACHINE) . WAS HOPEING YOU GUYS MIGHT BE ABLE TO ADVISE ME ON ANY TIPS ON  HOW TO     LOWER THE CUT IN SPEED MANY THANKS IN ADVANCE  JONNY

[Flux]

Please don't use all capitals, it's a nightmare to read.

Yes that little 4 ft machine works very well. Why do you want to mess about with the cut in speed, it's designed to match the prop and any messing about that you do will not help.

The only comment I can make is that Hugh has come up with an easier way to mount the stator and doesn't use that awkward hollow shaft. I am not sure where the information is, it's here somewhere. Others that have built that machine may be able to find the reference.

The modified method mounts the stator at the centre and the magnet rotor is in front.

If you are careful you can even mount the stator on the outside but if new you had better stick to the suggested ways.

Flux

[jonny]

hi thanks for thati have got the new drawings from hugh that does away with the hollow shaft my thinking behind lowering the cut in speed is where i live the winds not that great and a lower cut in speed might mean i make power more of the time . as i said im new to this and i respect watt you guys say many thanks jonny

[Flux]

The only way to increase power out in low winds is to use a larger diameter prop.

The same winding will work very well with a 5ft 6" prop if you add a second steel rotor with no magnets to close the magnetic circuit. You could try that later if you need more out, but it requires a larger alternator offset to furl properly.

At this stage I suggest you build it as in the plans, keep the rotor close to the stator for good low wind performance.

Small machines are never going to produce much in low wind areas but it will likely be far better than any attempt with cycle dynamos and dc motors.

Flux

[jonny]

thanks very much for your help all the best regards jonny

[wayne]

Hi Jonny

I have Hugh book with the hollow shaft and could never find parts in Canada. I would be intrested is to how you got the new plans. I have the blades carved out and like to put them to use.

Thanks

Wayne

[gotwind2]

Hi Guys.

I am also keen to make the smaller 4Ft Prop and PMG.

I have uploaded Hugh Piggott's 2005 P.D.F update he sent me on my gotwind.org webspace - i.e no centre hole needed on spindle.

http://www.gotwind.org/4%20FT_update2005.pdf

Jonny please keep us posted on your results,the diary section is a good place. I am also in the U.K (Shropshire)

Ben

www.gotwind.org

[hiker]

with that 8&6 setup you could go with a few more turns per coil--last one i built i used 120 windings per coil--you might try 100 turns per coil or less--should give you a earlyer cut in speed--you might lose a amp or 2 with the extra windings.........

[David HK]

The following drawings may be helpful if you are building Hugh's 4 foot wind turbine. Most of the metalwork and the prop blades are from his 2005 book, but I have modified it a little bit to accept a 40 volt Ametek DC motor. I intend to continue with my own variation of his design once I acquire the magnets.

David HK

[Capt Slog]

Jonny,

I'm also UK, whereabouts are you?

[jonny]

hi im in devizes wiltshire

[Capt Slog]

I'm in Derbyshire, near J25 of the M1.

Americans will find this funny, but Jonny lives a long way off from me, about 160 miles!

[Slingshot]

I'm in Derbyshire, near J25 of the M1.

Americans will find this funny, but Jonny lives a long way off from me, about 160 miles!

Slog,

What part would we find funny?  That 160 miles is considered a "long way"?  You'd be neighbors in Texas

[jonny]

wayne if you mail hugh and ask him about the new plans its likely he would mail you them thats whatt i did all the best jonny

[Matchew1579]

Yeah,

I had to walk that far to school!

Matt

[RUFUS]

I was just wondering why the sign on the tail didnt have any bullet holes in it?

                                                  Ruf

                                             in TEXAS also

[RP]

For those not familiar with the rural parts of the USA:  It's not uncommon to find that road signs have holes shot in them.  It's not that they all do but it's not unheard of either.   :-)

[wdyasq]

As do most windmill tailvanes...

Ron