HARBOR TEST 2015

A few weeks ago I did another of the annual harbor tests I have been doing on BIANKA's electric propulsion system. Here is a graph of the results:

Results are similar to least years tests with no real significant differences. Here is a graph of this years data compared with the 2014 test:

Some of the other data comparisons of the tests:

 The % battery at the end of the test was 89.7% compared to 90.6% last year.

The Amp Hours used for the test was 16.5 compared to 15.2 for the 2014 test.

NOTE: Some of the increase may be due to the distance traveled for the the test. This year the distance traveled for the test was 2.2 nm while in 2014 it was 1.8 nm. The difference might be explained by the location of the buoys which are removed and replaced each year in the harbor.

The tests show that the Thoosa electric propulsion system is still preforming well. It has been eight years after I installed it.  Along with  the reduction in maintenance and cost savings it continues to reinforce the notion  that it was a good decision to convert to electric propulsion back in 2007.


PREVIOUS HARBOR TESTS
2013
2014

ELECTRIC PROPULSION HARBOR TEST 2014

I'm a little behind in posting blog  posts after being a month away from the boat working. I hope to be posting more frequently and catching up on things now that I'm back on board.  Here are the results of the 2014 harbor test of my Thoosa 9000 electric propulsion system. I did the test earlier in the season soon after launch showing the speed vs power required to move my 30 foot 16,000 lb sailboat using electric propulsion:

NOTE: Speed is in knots

Below is the 2014 test data compared with the 2013 test at the 10 to 50 amp throttle settings:

Note: To see the averaged power settings for the 2013 tests click here. The graphs show very little change in performance in me electric propulsion system from last year.