Congratulations must go to Peter Convy and Peter Edwards who passed their KADMAC Multi Rotor solo test this Saturday, both flew very well and showed a good understanding of our flying site guidelines and the legal issues of flying UAV’s. The test we have put together for this class is an enhanced version of the BMFA BPC multi rotor test which is taken in conjunction with the standard kadmac questions. More tests to follow very soon.
1 Oliver Firth , Ultimate , 53 points
2 Frans Malherbe, Turbulent, 49 points
3 Charlie Lee, P 47 , 48 points
4 Harry Waddington, Cap 21, 47 points
5 Nick Hempel, Shoestring, 46 points
Oliver flew really well , a very aerobatic subject , flown in a very aerobatic manner, with good placement in display, Frans flew a much more sedate model, but really captured the slow flying, sedate, character of the Turbulent. Charlie flew a good display but the landing , literally, tipped the balance in Frans’s favour ! Harry and I made the numbers up !
Thanks to all the pilots for entering and to Mick Banks for scoring my flight, he was generous !
CD Nick Hemple
Photos Steve Ball
Video David Wilkinson.
Whilst we watched the weather forecast closely on the build up to this comp with predictions of rain all day, this proved to be totally wrong and we had perfect conditions with a slight breeze straight down the strip. With the event being judged by Howard Mansley for 6 competitors flying a very closely judged event.
1st Oliver Firth
2nd Charlie Lee
3rd Martin Hayle
4th Harry Waddington
5th Peter Harvey
6th John Clark
Sorry no pictures this year.
Aerobatic comp 1st October from 14.00 with 2nd from 10.00 as a reserve date. CLICK HERE for the schedule.
Scale comp 8th October from 14.00 with 9th from 10.00 as a reserve date.
Indoor flying 2nd October and 23rd October at the normal location, Holy Family School Keighley, starting time around 2pm until 5pm. CLICK HERE for directions.
Multi Rotor training sessions have now moved to Saturday mornings, so if you’re looking for assistance in gaining a CCA qualification for commercial use or just to gain confidence in your crafts systems please come and join us.
4th October’s club meeting will see Andy Symons of the BMFA attending to give us the latest information on , caa regulations, national centre, A &B test standard’s etc. If you have any questions/ideas or information to put to our governing body, this is your chance.
The location identified is Buckminster Lodge, a former equestrian centre, situated on the Leicestershire/Lincolnshire border, close to the towns of Grantham and Melton Mowbray and approximately 5 miles from the A1
For more information CLICK HERE
Scale comp 24th September from 14.00 with the 25th from 10.00 as a reserve date.
Aerobatic comp 1st October from 14.00 with 2nd from 10.00 as a reserve date.
2nd. Tuesday 4th October’s club meeting will see Andy Symons of the BMFA attending to give us the latest information on , caa regulations, national centre, A &B test standard’s etc. If you have any questions/ideas or information to put to our governing body, this is your chance.
Threat to Model Flying from European Regulation – EASA Prototype Rules for Unmanned Aircraft
EASA’s intent with Article 15 was to allow national authorities (like our own Civil Aviation Authority) some freedom to largely maintain the ‘status quo’ for model flyers, but only for the benefit of ‘those operating within associations or clubs with proven satisfactory safety records’. However, the ‘Prototype Rules’ lack clarity on how this would be achieved in practical terms and still leave the potential for large areas of the proposals to be applied disproportionately to model flying.
Please click here to read the full proposal.
There are many thoughts by many people on Lipo safety, listed below are the ones which I consider to be the most important.
Please let me know if you have any other thoughts/ideas which can be noted and then passed around to club members.
I gather from most people that Lipos when treated correctly are as safe as any other battery, otherwise we would have umpteen model shops burned to the ground. Most problems seem to occur while charging and this can happen for a number of reasons.
Never charge a damaged Lipo caused either through crash damage or other reasons.
Best and safest charge rate is 1C which is 1 x the capacity of the battery. Example: a 3000mAh Lipo would be charged at 3 amps. Some Lipos advertise charge rates of up to 5C and while this may be so it doesn’t do the Lipo any good long term.
The balance lead on a Lipo plays a very important part in the charging process and should be connected every time. The reason for this, on a normal charge the individual cell voltages are being monitored so no cell should exceed 4.2 volts and the charging process should stop even if some cells haven’t reached the 4.2 limit.
If the balance lead is not connected, say for example on a 3 cell Lipo, the charger is looking for a total finished voltage of 12.6 and it doesn’t know how this value is made up. One cell could be 4 volts, another 5 volts and the third cell 3.6 volts, the danger being the cell at 5 volts. With a few chargings like this the overcharged cell is likely to start degrading and swelling up.
I have been told that 90% of heat generated in a Lipo happens in the last 10% of usage causing the Lipo to swell and I consider this to be true through my own experiences of over discharging Lipos. I now adopt Bill White’s practice of trying to leave 20% capacity in the Lipo at the end of a flight. Bill is an F3A competition flyer and generally charges and discharges his Lipos at least 800 times with no adverse affects.
The charger and Lipo should be sat on a heat proof surface with the Lipo in a charge sack or bag which will help to limit any damage.
All chargers vary in their set up but most have a few safety features that when activated can stop a potential disaster.
The timer can be set to knock off after so many minutes charging, after a couple of charges you should see how long it takes to charge a certain pack and can adjust the timer accordingly.
The charge limiter can be set to the capacity of the Lipo and again will stop charging when this has been reached.
Remember that if a Lipo starts hissing or bubbling either during or just after charging it is likely to catch fire and once started will not stop until used up. The heat is very intense as it is a chemical fire which produces its own oxygen so it is best to try and contain it rather than try to move the Lipo while burning.
This leaflet is best read in conjunction with the BMFA’s guide to Lipo safety.