Hi,
   Any idea what is the amp rating for the esc that I can use with a CF2812 motor. I used it with a 20A esc and it works OK. But haven't tried to keep it going for long.

Got this data by googling CF2812 :
http://www.heliland.com/catalog/index.php?main_page=product_info&products_id=1822&language=en

Dont know if your motor is this KV ?

Check with the supplier they should have it suitable for your motor.
Sai

Sai,
Thanks, will search around also and check with the seller.