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Trex 700 Gasser - Zenoah RC Engine


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 Helibug HB7-RC Gasser Conversion for Trex 700

Helibug HB7-RC for Trex700 LE

product image  Item Name: Helibug HB7-RC Conversion kit for Trex 700 (Basic)
 Item Price: $339.99    Available on Order Only
 Item SKU:   HB7-RC

   with 16T Pinion   < OUT OF STOCK
  with 17T Pinion
  with 20T Pinion  
Product Description Helibug HB7-RC Gasser Conversion for Trex700 using Zenoah RC Series of Engines
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Helibug HB7-RC for Trex700 Complete

product image  Item Name: Helibug HB7-RC Conversion kit for Trex 700 (Complete) comes with 115T main gear, Align Front Frame Mount and frame bearings
 Item Price: $379.99 - Available on Order Only
 Item SKU:   HB7-RCC

   with 16T Pinion   < OUT OF STOCK
  with 17T Pinion
  with 20T Pinion   < OUT OF STOCK
Product Description Helibug HB7-RC Gasser Conversion for Trex700 using Zenoah RC Series of Engines
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 Best Seller !!!


HB7-RC Gasser Conversion Kit for Trex 700

Designed to convert Trex 700 Nitro into a Gasser Helicopter using Zenoah RC Series of Engines

All up weight = 11.6 lbs with stock Zenoah Muffler


This Conversion kit is compatible with all new Trex700 T/R Helical/Slant Gears

Now also available with 16T Helical Pinion



Align Trex700 Clutch bell with Blue Liner

The new clutch bell from Align with a 'blue' clutch bell liner is the best upgrade from Align. This clutch bell uses thicker clutch liner. It has a much better gap between the original Trex700 Nitro Clutch and the Clutch Bell.

I highly recommend using Align Trex700 Clutch with the NEW Align Trex700 Clutch bell

There is no need to upgrade to Lynx Gas Clutch as original the "Gap" with the older Align Clutch bell was unacceptable for gasser performance. Also, there is no need to fix any tolerances for the Trex700 clutch to fit into the bell as it is factory adjusted for the best performance.

100% compatibilty with the Trex700, flyers can benefit from not only Lynx Gas Clutch, but, also QuickUK standard and HD clutches along with the Lynx stock Trex700 Clutch.  More choices of clutches to choose from !

This applies to All Helibug Gas Connversion Kits which uses Original Trex700 Mechanics


This kit is designed to convert Trex-700 Nitro into Gasoline powered Helicopter using Zenoah G230 RC series engines

your Trex will be flying with a Gasoline Engine in no time.
Here are some of the key points which makes this conversion kit different from others:
Designed for Zenoah RC Series Engines (G230RC to G290RC or CY Zenoah Clone Engines)
Excellent Balance and Performance
No Vibrations
2.3mm thick G10/FR4 Highest quality material used
3.2mm thick G10/FR4 Base Plate
6.5mm thick G10/FR4 Engine Mount Plate
Relocated Throttle Servo
Single Piece Pinion Gear design
5.75, 6.76 and 7.18 Available Gear Ratios
This kit uses all stock parts from Align

with Basic kit, You will need one extra pack of HN7067 (Bearing), HN7084 (Front Frame Mount)
 from Align Trex 700 Replacement Parts and Align/MicroHeli 115T Main Gear

Complete kit does not require any additional parts


Choosing the right Pinion (Gear ratio) for your Flying Style

This is the most common question we receive from Buyers...."Which Pinion should I buy?"
Here is a brief selection criteria you should use when buying this kit.

16T Pinion (7.18 Gear Ratio)
16T Pinion is best for sports/mild 3D flying, so if you are a sports/mild 3D flying, it is highly recommended to use this gear ratio.

17T Pinion (6.76 Gear Ratio)
17T pinion is best for sports and a good level of 3D flying. so, if you are a 3D pilot/sports flyer, this gear ratio is best for you.

20T Pinion (5.75 Gear Ratio)
20T is only made for Extreme 3D Pilots. Although you can fly sports with 20T pinion but, its not recommended to use this gear ratio for sports flying.

Please note, if you plan to use a Modified RC Engine, than its highly recommended to use 16T Pinion (7.18 Gear Ratio)
My personal recommendation is to use 17T Pinion for all flying styles !


Conversion Step Reference

There is nothing special in converting Trex700 with this conversion kit. The only addition from the manual is mounting of Zenoah Engine. Below is the step-by-step pictures as installation instructions

WARNING: The radio controlled model helicopter built from this conversion kit is not a toy and is not meant for children. It is a flying machine capable of causing property damage and serious bodily harm to both the operator/assembler and/or spectator if not built and operated correctly and responsibly. Rotating components, especially the main rotor blades, are an ever-present danger. Model helicopters operate differently than model cars and airplanes. Helicopters by their nature are not positively stable, meaning that even if properly assembled and adjusted, helicopters will not recover from an unwanted flight attitude, nor will they hold any particular orientation without constant control inputs from the pilot.


HELIBUG has spent considerable time making this product reliable and easy to build, but only the operator can insure that it is safe. Because the safe operation of this helicopter is beyond the control of the Manufacturer and distributor, the owner/operator assumes all risk of use.

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