Replace my Blade 70 ESC

[wouldbeflyer]

Can anyone recommend a good replacement for my Blade 70 amp ESC .We tried to reset it but it is giving high revs and will not detect a low battery.I read that Hobbywing do an 80 which works but I am completely out of my depth here. A little guidance please

[bigbladelittleblade]

Hobbyking YEP 80amp ESC, These are excellent IMO.
http://hobbyking.com/hobbyking/store...arehouse_.html
also buy the programming card, it makes them so easy to setup.
Setup videos are available on YouTube.

[wouldbeflyer]

Ok , sounds good. How do you use the card please

[bigbladelittleblade]

Ok , sounds good. How do you use the card please

watch this video, it really is simple, http://youtu.be/y37Sk5YtU3g

its the same for all YEP ESC's

[wouldbeflyer]

Sorting out the KV with magnet count is a bit confusing but it does look good .Are Hobbywing and Hobbyking the same people

[tomatwalden]

Personally, I'd go with a Castle Talon 90 as the BEC is very strong. You'd need CastleLink to program it, but I find the PC-based interface nice and easy to use.

Castle Talon 90 ESC with HD Bec 010-0097-00

[bigbladelittleblade]

Here is the sum for PWM-Frequency, motor KV x battery voltage x motor poles, then divide by 20 and then round the final figure down to get your PWM frequency, hope this helps. If you get one and get stuck just PM me and I'll talk you through it.

[wouldbeflyer]

Thanks Tom. The link is another new one on me, straight forward and easy has to be considered as I'm out of my depth

[wouldbeflyer]

Thanks, just been looking at the motor and its got 1300kv on it .Is this what I am after

[bigbladelittleblade]

Thanks, just been looking at the motor and its got 1300kv on it .Is this what I am after

Yep that's it.

[tomatwalden]

Thanks Tom. The link is another new one on me, straight forward and easy has to be considered as I'm out of my depth

The YEP with programming card is fairly easy. I prefer the Castle Talon though because (a) I use Castle ESCs on most of my helis, and (b) I like the PC interface. That said, the YEP is a fair bit cheaper - but that's mostly because it's a Chinese clone/rip-off of the YGE (German, quality) ESC.

Thanks, just been looking at the motor and its got 1300kv on it .Is this what I am after

Any 6S capable helicopter ESC rated 70A or over should be OK. The "Kv" rating of a motor is "Thousands of revolutions per volt" (not kilovolt). So 1300*22 (volts) for a 6S battery = speed of motor.

[bigbladelittleblade]

Thanks, just been looking at the motor and its got 1300kv on it .Is this what I am after

I think I read somewhere that the 520h motor has 8 poles (magnets) so if using a 6s lipo your calculation would be :

1300 x 22.2 x 8 = 230,880 then divide by 20 = 11,544 so your PWM Frequency would be 10kHz

[wouldbeflyer]

Blimey ,I never had a clue about this, I hope that's right as that's what I'll use,thanks to you all for your help