Plettenberg Xtra 30-10 Evo
A little history on this motor. The idea for this motor was concieved during talks between myself and the Plettenberg family during the 2005 Worlds in France. I was running the original 30-10 which was not actually intended on being used in F3A and it was working quite well for me. Bernd was running a high RPM version of the 30-10 known as the 30-10 20p, which was never produced on a mass scale because it was prone to getting very hot. I beleive that Dave Lockhart was the only one in North America to ever actually try that motor.
The concept for the Evo was to have a motor that could deal with a lot of power...as in up to 3500W easily without getting hot. This would allow us to run a wide range of props from 20"-22" as each pilot wanted. This essentially provides a couple of choices....a) a 20x15 size prop at 6500+ rpm and a reasonable current draw (75A), or b) a 22x12 in the low 6000's (which is more than any C50 will deliver) at around 80-85A draw. Or anything in between! The development of the motor took a number of months and the first version was actually produced in about April of 2006. This version never made it past the prototype stage again because of heat buildup. A few changes later and I received the first pre-production models for testing in late June 2006. The motor worked exactly as we intended and full production ensued with motors being delivered in late July 2006.
So what changed from the original 30-10....well pretty much everything! New stator material, airflow holes through the stator (a novel idea which I have not seen anywhere else), new windings, lowered pole count from 28 ---> 20, increased the kV from 210 ---> 220. The motor also had some very minor physical changes, a slightly bigger diameter and length and the weight increased from 530g, to 550g (equal to a Hacker C50).
I firmly beleive that currently this motor is simply the ultimate choice for power in electric F3A models. We have optimized an existing motor to give the most choice to pilots for prop selection and flying style, and still keeping the compact and light package that we need.
The pictures below show some of the physical changes.
The table below shows some factory testing data, the RPM figures are low in comparison with my own testing. My testing suggests that in most cases the chart is 500-600 rpm low, the current draw is approximately 5A below my peak as well.
I personally prefer the APC 21x13W and 20x15 e-props when ran on 10s lipos for this motor.
prop: voltage current RPM 1/min thrust in N thrut in oz CFK 19x12"RASA 30,0 39,3 5560 51,0 145 32,3 43,9 5870 56,9 161 34,6 48,8 6175 60,8 172 35,7 51,0 6360 64,7 183 CFK 20x10"RASA 30,2 36,9 5650 53,0 150 32,5 41,2 5965 58,9 167 34,7 45,8 6280 65,7 186 35,8 47,7 6435 68,7 195 CFK 20x13"RASA 27,7 40,3 5075 51,0 145 30,0 45,2 5335 58,9 167 32,1 50,4 5700 64,7 183 34,3 55,8 5980 72,6 206 35,4 58,3 6100 76,5 217 APC 21x13"W 30,1 57,4 5165 72,6 206 32,2 63,0 5420 82,4 234 34,4 69,1 5665 92,2 261 35,4 72,1 5780 96,1 272 CFK 22x10"RASA 27,8 41,3 5060 60,8 172 30,0 46,3 5370 70,6 200 32,2 51,7 5650 78,5 223 34,4 56,7 5950 86,3 245 35,4 60,0 6050 92,2 261 CFK 22x12"RASA 25,4 46,1 4505 60,8 172 27,6 52,3 4785 68,7 195 29,8 58,7 5070 78,5 223 32,6 64,9 5325 84,4 239 34,0 72,0 5520 96,1 272 35,0 74,2 5625 100,1 284 Syer 20x12 3Bl 27,4 49,0 4845 58,9 167 29,6 54,3 5130 68,7 195 31,8 60,1 5413 76,5 217 34,1 66,2 5715 84,4 239 Dimensions and weight
Xtra 30-10 Evo (550 g, 19.4 oz)
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