Material: Nylatron Proprietary Type 66 Polyamide
Models: all ALIGN TREX 700N and 700N E-Conversion series (replaces stock Align part #HN7019-1).
Main Drive Gear can also be used for all ALIGN TREX 550E and 600E series helicopters with the addition
of the T700 Main Gear Case (AT550/600-MGC).
Note: check Installation Diagram for correct installation procedure for optimal strength and longevity. The new Main Drive
Gear is precision CNC-machined from a proprietary Nylatron MoS2-Filled Type 66 Polyamide, one of the best materials
available today for polymer gears and the perfect match for an extremely strong, smooth running, and durable power
transmission. The gear is composed of 164 teeth, utilizing the metric MOD0.7 tooth profile standard for the stock TREX
700N, 600E/ESP, and 550E series helicopters. Through months of testing, the gear has been optimized to include
numerous design features for optimum performance, including:
(1) The tooth involute profile has been optimized through numerous design iterations for increased tooth engagement and
strength, providing an incredibly quiet and durable gear for a MOD0.7 power train.
(3) Weight was reduced through FEA optimizations of the machining pattern to significantly reduce weight, while
maintaining full strength of a solid-gear profile.
(4) The self-lubricating properties of the proprietary MoS2-Filled Type 66 Polyamide material provides exceptional wear
and noise properties, providing a gear that can withstand the harsh nature of hardcore 3D flight.
- One (1) TREX 700 Series Main Drive Gear, 164T, MOD0.7
Precision CNC-machined, Nylatron Proprietary MoS2-Filled Type 66 Polyamide
48 g (design is FEA optimized for maximum strength and minimum weight)