How does the 2m chrysalis perform with the 8.4V Speed 600 propulsion
which is listed among the three possibilities on the website?
This is obviously
a cheaper set than the MP motor, and I do not need the most competitive
climbing rate.
From : Don Stackhouse
It's fine for sport flying. It will typically sustain about a 20-30 degree climb angle with no trouble, and get you to thermalling height in comfortably under a minute. It is not as efficient as the brushless motors, so you don't get as many climbs to altitude per charge, and of course it takes longer to get to altitude. However, it is certainly adequate for sport flying. I flew the original prototype for a long time with that setup, before the brushless motors were readily available. It does climb significantly better on a Speed 600 than its competitors that I'm familiar with, mostly because of the weight and the higher aerodynamic efficiency.
The other nice thing is that if you later decide to upgrade to the MP Jet 28/20-7 brushless outrunner (or maybe some others), you can use the same battery, and the new motor will fit the same mounting holes.
It's a little heavier than the brushless motors, maybe an ounce or so because the motor itself is heavier. I don't have the data handy, but as I recall it had a flying weight on two 2000 mah Li-poly cells around 38 ounces, and a wing loading of a bit less than 7.6 ounces per square foot.
Don Stackhouse
DJ Aerotech
|
May 17, 2012
