Rating
Trex 250
Trex 250
Electric and Nitro helicopters?
What is the difference between nitro and electric helicoptors, and what is the differenc in all the trex models like 250 450 500 600 700
To correct both of the people before me:
Electric helicopters run primarily on Lithium polymer (Lipo) or Lithium nanophosphate (A123) batteries nowadays, not nickel-metal hydrides. NiMH is too heavy to use in pretty much all helicopter applications as their energy density is too low and they are too heavy. Lithium Ion batteries are not very well suited for helicopters either as they use are slightly lower voltage and energy density than Lipo batteries and they come in hard cases which is a weight penalty.
Nitro helicopters use a two-stroke motor than runs on a nitro/alcohol/oil mixture that is ignited by a glow-plug. Typically, nitro engines run for much longer periods of time than their electric counterparts, but E-helis have much more power than the nitros. Brushless motors and the high energy density Lipo batteries give electrics a big advantage over the nitros because they have instant torque and Hp. Both will perform about the same overall though, so it really comes down to preference.
The sizes refer exactly to that. The bigger the number, the bigger the helicopter. A 250 will pretty much fit in your hand and is about the length of your forearm. The 700 weighs upwards of 10-12lbs and is about 4-5 feet long with full blade extension. typically the sizs are based on the length of the blades or the motor size, but there is a bit of confusion even for heli guys in the middle ranks. The 450′s use 325mm blades, the 500 uses 430mm, but the 600 and 700 use 600mm and 700mm blades respectfully.
Nitros on the other hand, typically go by their motor size in cubic inches. A .30 cubic-inch engine is called a 30 size. A .50 is a fifty size, .60-.90 is a 60 through 90 size etc…
Sometimes they combine the two and just use the designation (N) or (E) to represent their specific power source. E.G.-Trex600E, Trex 600N, Trex700N, etc…So far, Align is the only company that really uses the hybrid system, but some people are referring to the sizes and using the E or N designators anyways.
It’s a bit confusing at first, but you get the picture after you’ve been around them for a while. Hope that helps!
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