Finally got my 3 meter dual rotor flying. Here are some pics of assembling it prior to raising.
This shows the rain shield and tail keeper. We get months of rain w/little wind. The rain shield should help keep stuff from getting between the rotors and stator too.
For final balance I used the pendulum method. 2 1/2 oz. about 7 inches from center was enough. I find this 4 blader easy to balance. I poured a lead weight around a bolt on an aluminum angle for the weight.
Here is the pendulum mounted to one of the main blade bolts. I decided to leave this in place when I raised it to prove my balance. I may make it part of the blades later, (or not). I don't think it will bother the efficency of the blade.
I pull this tilt up with my tractor although it pulls very easy. It is a double block to reduce the pull. I think my lawn mower would pull it up but the brakes on it are not good enough to hold it.
It's 40 ft. when erected. The effective height is more due to the land behind the shop falling off about another 20 ft. to the creek.
I am a little disappointed in the output. The most I have seen is 3.3 amps into 26 vdc. The cutin speed is right where I wanted it at 130 rpm with a wind spd of 7 mph. I am pleased with the low wind rpm. I noticed that it didn't run true to the wind direction. I discovered my tower top isn't staight up so the long offset (6 3/4 in) keeps it slightly turned out of the south wind.
When the shop roof dries up again I will go up and straighten it up. i might also need to make my tail area a little larger.
It furls at about 16 mph and 205 rpm. Might get more rpm when it is headed into the wind. I use bike computers for both wind speed and rpm. They seem to work great.
I'm sure glad it's not on my house. The growl is loud inside the shop. Sounds great. There are more details of the genny in my diary for the curious.
