Tuesday, March 31, 2009

A123 Batteries for the T-Rex 500 and like Helis

A123 Racing now has a 6S1P 2300mAh packs for the T-Rex 500 and similar helis. Max amperage is 138A and weight is ~500g. Voltage is slightly lower at 19.8v (3.3v/cell nominal) instead of 22.2v so they will not have the equivalent kick for the same number of cells. So think of them as 5S packs but gear them appropriately for the actual voltage.

Also, you will need an ESC that you can set the low voltage cutoff appropriately (stock T-Rex 500 ESC will not work. Castle Creations and Scorpion are options).

These packs are Li-Ion packs using nanophosphate and are safer and more durable than traditional LiPos and can be quick charged (15-20min) and handle more cycles, but they do weigh a bit more.

You will also need a charger that can charge A123 cells.

E-Flight Blade CX3


RC-Hobbies has a new Blade CX3 coaxial helicopter available! Advertised as being a helicopter that anyone can fly, this counter-rotator has a new MD 520N scale NOTAR fuselage it also uses the Spektrum AR6100e receiver. E-flight says it is “compatible with most Blade CX2 option parts.”

NEW T-Rex 450 PRO


Align has done it again! They have released the T-Rex 450 Pro (also known as the “Jason Krause Pro”). It is a newly designed T-Rex 450 with obviously strong T-Rex 500 design influence. The new T-Rex 450 Pro has:



  • Single side frames


  • Improved servo and linkage layout


  • Completely new Rotor Head


  • Torque Tube Tail


  • Large and powerful new Tail design with counter weighted blade grips and reduced tail RPM


  • One piece carbon/plastic landing gear and boom supports


  • New Align out runner motor


  • New canopy design

If you are in the market for a 450-class heli this will be the one to get.

This is a Video of the Align Trex 450 Pro Align Prototype outrunner motor Align 410M Cyclic Servos Prototype tail servo Thunder Power 2250 3S Battery Spektrum AR6100 receiver.



Heli Chat

Come and join us propeller heads at the shop on Wednesday Evenings (7:00PM - 8:00PM).

Bring your helis and radios as we'll shoot the bull on setup, exchange crash stories and if anyone is building one when can help put it together and exchange ideas on building, setup and radio programming.