02/07/2007
|
News items to phill@scsa.org.uk |
Click here
to |
Click here to leave the news list |
||
|
This month's Photo page |
|
| The picture shows a DC clamp meter measuring the current drawn by my Protech Lazer. The motor is a Hacker A20-M rated at 14 amps maximum, with an 8 X 6 prop it draws 8 amps static on 3 X 1000ma li-polys rated at 10c | |
 |
The recommended prop is 10 X
4.7 for this motor Most brushless motors are at their best when drawing 75 to 80% of there full load current I can not tell what the motor draws when it is in flight. I originally fitted an A20-S a smaller motor but needed 1/2 oz of lead to get the C of G right If you want to check you electric model with this meter give me a ring, I also have a tachometer for RPM. This set up gives vertical performance with a long flight time, if I fitted a bigger prop I would need 15C li-polys A DC clamp meter has a Hall effect
device placed in the gap of the
iron clamp. the output from this is converted into a digital readout, a
zeroing button is needed to cancel out any residual magnetic
field |
 |
|
 |
|
|
As June 21st was the longest day, so supposedly the latest
sunset (although I'm not sure that's exactly right) Tim Chant and myself
went to Cam for an evenings Zagi combat despite the showers. The
approaching showers and low sun produced a permanent rainbow which
varied in intensity as the showers moved around. Editor, latest sunset is about a week after the longest day |
 |
|
Tuesday at Selsley, sun, blue sky and plenty of lift. Photo my Pegase |
 |
 |
 |
Five pennyworth from Bryan Thursday afternoon on Frocester Hill was exhilarating with a South Westerly wind varying from the low 20s to the high 30s MPH. There were not many flyers out, Bob Steadman flew his own design flying wing which really worked well in the conditions. I flew a WingBat and a Mininch - it is always a pleasure to fly this model. Allan King and Pete were flying too. Allan was showing Pete how to retrieve a model from down the front of Frocester hill when he almost vanished in a badgers set - lucky not to have hurt himself - just his pride. Also whilst showing Pete how to land Allan managed to get the Middle Phase entangled in a small tree on the other side of the Frocester wall. Pete then showed Allan how it should be done and performed a textbook landing near the top of the Westerly slope. Well done Pete. |
|
|
|
|
Sunday at Haresfield, a strong breeze with plenty of lift. The photo shows a shower on the way |
|
