Rickster
12-12-2006, 03:14 PM
Just curious which is the way to go? The HV85 should be more than up to the task in an ION shouldn't it? I have never seen Amps higher than the mid 90's with the Hacker 77/ Actro 32-3 on 10:1 .. What is the surge Amp rated at on the CC controllers..
Rick
I'd go with a 110hv esc myself. More current headroom.
Cheers,
Tom C
lukedodd
12-12-2006, 09:30 PM
Just curious which is the way to go? The HV85 should be more than up to the task in an ION shouldn't it? I have never seen Amps higher than the mid 90's with the Hacker 77/ Actro 32-3 on 10:1 .. What is the surge Amp rated at on the CC controllers..
Rick
I find ESC's somewhat of a dark art. I had 2 x H77's defective(replaced under warranty), one actually caught fire in-flight! TomC can tell the story beter than I, it was in his Ion. My No.2 Ion is using a H77 with the Actro 32-3 and it has been fine for about 75 flights. However I have found the first flight of the day has a slight decrease in maximum motor rpm compared to subsequent flights. Also the spool up time varies from flight to flight! Again the longest spool up is with the first flight of the day. This is not related to packs etc. I cannot explain it other than some internal temperature induced phenomenon with the electronics, maybe they need a warm-up! It is unrelated to ambient temperature variations though. Our top heli pilot can attest to this rpm variation, its not just me.
The Schulze 32.80K I used in my No1 Ion is totally consistent, day in day out.
Whilst I agree with Tom that having a higher rated ESC than required gives more headroom and hopefully more efficient tranfer of electrons, I am not sure there is hard evidence for a HV110 performing better than a 85 when drawing currents up to 85A. I found the CC HV85 worked very well in my No 1 Ion with the Neu 1521/1.5. I had been testing it with a 12s setup on 670mm blades and HS of 2400. A bit too high , but boy is it fun to fly!!!! Until I start destroying gears I will keep testing it. The HV85 was very cool only 35 degrees C on a day where ambient temp was 28 degrees C - Not Bad at all. A 6 min flight used 2.7 A at 12s, compared to 3.2 A for a 6 min flight on 10s (obviously alot of variables here, but an interesting observation). Particularly when at 12 s the Heli is ballastic and at a recent Heli Xmas party all the nitro guys where amazed. Certainly go for a 110 if money is a not great issue, otherwise I think the 85 is fine for the Ion.
I went for the HV85 as its quite a bit cheaper than the 110 and the money saved went towards a Jeti Spin99, which I have also tested at 12s in Ion - 1. One thing with the Spins, the on-board datalogger is good for some data, but max/ min currents aren't accurate as you neeed to run the ESC at full throttle for 4 seconds, so Gov mode and flat throttle curves don't give you an accurate current measurement. I guess we still need a onboard datalogger for that data. However the other data is useful, and is still a feature to consider if you are in the market for an ESC. I have had very good experience with Jeti controllers in my planes, Trex and now Ion.