First Experimenatal Turbine

[RA]

This is the first 12' turbine with 12 V windings.It was build by Piggot plans with  slip rings / Unfortunately I couldn't see more that 50 amps from this turbine. the reason is that the offset of axe and the weight of tail are not correct. or offset would be smaller or weight of tail should be higher. Pigott suggest to load up to 40 pounds to the tale and to my opinion it is too heavy.



----------------

Your pictures are not displayed because because they exceed the 640x480 picture posting limits. The pictures can be seen here
http://www.otherpower.com/images/scimages/8256/

----------------

[Flux]

50A is not bad for a 12v turbine. If you feel that the alternator can reliably survive more then increase the tail weight. If you think loading the tail more is too heavy then accept the 50A and be happy that it will be reliable. If you later find the courage you can increase the tail weight.

Whatever you do, DON'T REDUCE THE OFFSET, that will defeat the furling and will be a disaster. Other factors come into play if you reduce this offset. Adding tail weight is safe as long as you stay within the alternator limits.

flux

[Janne]

I agree, decreasing the offset might raise the output much more than what you could think based on simple math.. If you decrease the offset the prop seeking forces might increase so much, that it will refuse to furl alltogether.