Split the alternator and it ‘s not bad that two pack paint works well so a quick sanding and more paint should see it good for another two years better than buying magnets.
Surprising that the end has not rusted the bubbles are just condensation
They also have not lifted from the disk.
The stator got rubbed a bit but it’s only paint damage but you will see that the tape on the coils has bubbled through. This might be from gassing as it looks like the stator got a bit hot but seems to be ok. This was cast with polyester.
This is Illiocht’s 2.4m wind turbine which we worked on two years ago, see this post.
I got a call from him over a week ago saying that he could not brake his machine and it was running wild in a storm, when we got to his place it had been running wild for around two hours, not a nice sight. This machine has all nine wires running down the mast with the rectifiers in a box at the bottom, with the stop switch on the DC side in the battery house. It looked like water got into the box and shorted out the dc end, resulting in one of the conductors melting.
I cut two wires at a time and shorted them together, this slowed the turbine down slowly and also left less volts for me to handle, I would not have liked striping a 3 phase system at that speed 🙂 So we left it shorted for a few days as we hadn’t the time to drop it and just as well because today was calm and we ran in to a problem while lowering it, someone had built a shed in the path of the top stay.
This we got around by disconnecting the stays from the anchor and adding a piece of rope to let the mast swing to the left and clear the shed. We had a few ideas on how to solve the problem for erecting the mast again from cutting the corner off the shed to moving anchors and stuff I can’t print then Niall came up with the solution to drop the mast in the opposite direction.
Before we noticed bad shed to the left.
X marks the stay
Bent base and a nice twist.
Captions for this photo are welcome and you might even get a prize.
The black paint had faded and chipped a bit not bad for two years “ideally servicing should be done once a year.” Yea right.
We had another successful wind turbine building course last week with Paul and Kevin from Cork, David from Wexford, Lee from Wicklow, Mícheál from Cavan and then we were joined on Wednesday and Thursday by Michael from Derry.
This workshop was a deviation from the norm where we would build a wind turbine from scratch. But this time our magnets did not arrive in time, reckon it was the ash cloud, so we had a 4.2m machine that needed finishing and decided to make a set of 2.4m blades.
For the blades we glued up some 3×11/2” spruce with waterproof pva. This timber was 70mm thick and gave us a nice twist as can be seen in the photos.