Electric conversion
06-06-2009, 04:18 PM
#1
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Electric conversion
Does any body know how to convert from nitro to electric?
I have a Epic RC Cap 21 with 60 inch wingspan and I want to use an electricsystem. The
planes asked for a 60 size engine, butI am thinking of putting a Rim Fire 50-55-650 GPM6 5310
with a ESCSS80, Would that be about right?
I don't know because I usually fly nitro planes so I'm new to this.
I have a Epic RC Cap 21 with 60 inch wingspan and I want to use an electricsystem. The
planes asked for a 60 size engine, butI am thinking of putting a Rim Fire 50-55-650 GPM6 5310
with a ESCSS80, Would that be about right?
I don't know because I usually fly nitro planes so I'm new to this.
06-06-2009, 05:03 PM
#2
Join Date: Mar 2004
Location: UlladullaNSW, AUSTRALIA
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RE: Electric conversion
If you repost in the gas to electric forum http://www.rcuniverse.com/forum/forumid_132/tt.htm There will be people that will be able to help.
Cheers
Cheers
06-07-2009, 02:26 PM
#3
RE: Electric conversion
As a GENERAL RULE OF THUMB, use the following:
Ready to fly weight = airframe, motor, servos, ESC, battery, receiver, etc.
Trainers - 60 - 90 watts per lb of ready to fly weight.
Sport planes (mild aerobatics) - 100 - 150 watts per lb of ready to fly weight
3D - 150 - 300 watts per lb of ready to fly weight
300 + watts per lb of ready to fly weight - wings are optional
MOST motors out there today list a watt rating. The ratings listed above will get you pretty close for an outrunner motor/battery setup.
You do need to realize that different planes will require different amounts of power. A 70" span Piper Cub can typically fly on 60 - 75 watts per lb, however a 70" warbird will typically require 150 - 200 watts per lb.
If you do not have it I strongly suggest getting MotoCalc. You can D/L it and use it for free for 30 days.
Ready to fly weight = airframe, motor, servos, ESC, battery, receiver, etc.
Trainers - 60 - 90 watts per lb of ready to fly weight.
Sport planes (mild aerobatics) - 100 - 150 watts per lb of ready to fly weight
3D - 150 - 300 watts per lb of ready to fly weight
300 + watts per lb of ready to fly weight - wings are optional
MOST motors out there today list a watt rating. The ratings listed above will get you pretty close for an outrunner motor/battery setup.
You do need to realize that different planes will require different amounts of power. A 70" span Piper Cub can typically fly on 60 - 75 watts per lb, however a 70" warbird will typically require 150 - 200 watts per lb.
If you do not have it I strongly suggest getting MotoCalc. You can D/L it and use it for free for 30 days.
06-08-2009, 05:21 PM
#5
RE: Electric conversion
ORIGINAL: salsapete51
Thanks alot Also what type of ESC and batteries do you recommend?.
Thanks alot Also what type of ESC and batteries do you recommend?.
I can state that even though I have tried 3 "Mystery" ESC, I can not get them to program properly. I USUALLYuse Turnigy or Turborix ESC WITHTHEPROGRAMMINGCARD (The card makes it very easy and for $10 I feel it is worth it.) I have found both of these brands to be reliable and noticeably less in price than Castle.
As for batteries, I use lipos and I get them from Hobbycity Online R/C Hobby Store : I have had no problems with them and, again, they are noticeably less than the lipos you buy here.
Remember, the guidelines I gave for the motors are just that - guidelines. They will get you reasonably close, however, the type of plane has a big effect on it also.
