Thunderbird 90

Gasser Conversion for Raptor 90


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 Gasser Conversion for Raptor 90

Helibug Thunderbird 90 Gasser Conversion for Raptor 90

product image  Item Name: Helibug Thunderbird 90 Gasser Conversion for Raptor 90
 Item Price: $399.99    Available on Order Only
 Item SKU:   HB-TBRC

Product Description Zenoah RC Engine Based Gasser Conversion for Raptor 90 Helicopter
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Required Parts Package for Thunderbird 90

product image  Item Name: Required Parts Package for Thunderbird 90
 Item Price: $109.99  - Available on Order Only

(Ordering this item from us delays shipping for 2-3 business days)
Product Description  Package includes: Trex 700 Clutch, Trex 700 Clutch bell, Stator shaft and Trex600 frame mount blocks (8 pieces) with required screws
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 Best Seller !!!

Helibug Thunderbird 90 Gasser Conversion for Thundertiger Raptor 90

Designed to convert Raptor 90 Nitro into a Gasser Helicopter using Zenoah RC Series of Engines

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



(shared photos from Greece)


Helibug is proud to announce Thunderbird Gasser Conversion - a very long-awaited Gasser Conversion for
ThunderTiger Raptor 90.
We have received many requests for this state-of-art R/C Helicopter Gasser Conversion.
It took us a while to come up with a very unique and 'simple to convert' design.

This new conversion for the Raptor 90, is one of the most simplest conversion produced by Helibug.
Simple installation without dismantling the whole Helicopter. Only require replacing the metal stock
side frames one by one along with few steps to install the RC Engine. There are no links to replace or adjust, no relocation of any parts at all. All electronics stays at its stock location.

We have kept the total required parts count to minimum to reduce all up weight. If something is not
required, its not there.

As always, Helibug keeps it Simple

Side frame material is 0.125" thick (>3mm) G10/FR4. That's >0.5mm thicker than stock Raptor 90 Side frames.

We have also replaced the stock clutch/clutch bell/pinion. Our conversion uses Trex-700 Clutch set.
Easily available anywhere along with few upgrade clutches from third-party manufacturers.

This conversion kit is designed to use a 10oz fuel tank under the nose of Helicopter inside the Canopy. Fuel capacity is good from 10-15 minutes of flying - depending on the type of flying you do and the power of engine you select to install in your helicopter. For longer flying time, its possible to use a bigger fuel tank.

Our conversion kit supports all available main gears for Raptor 90 (from 90T to 95T). 14T pinion is
supplied with our Conversion kit. 91T stock main gear will give you 6.5 Gear Ratio.
Good for >1900 Headspeed.

To get the best out of RC Engine, we mount the engine from Top and bottom for vibration free 3D
performance. You will also need 8 pieces of Frame Mounting Blocks (HN6019) from Trex600 to complete this
conversion. 4 pieces will go on Engine mount plate and another 4 will go on the baseplate.
Please see below for complete list of included items in the kit and required parts to complete this conversion kit

Backward Engine Mounting for Better Balance and Airflow
0.125" (>3mm) Thick G10/FR4 Side Frames and Base Plates
Extremely Strong Side Frames for Excellent 3D Performance
0.250" (>6mm) Thick G10/FR4 Engine Mount Plate
No Vibrations
14T pinion for 6.5 Gear Ratio (Using Stock 91T main Gear)
Adjustable frames for other main gears for Raptor 90 (from 90T up to 95T)
Better ground clearance of Pull Start compare to Trex due to bigger skids on Stock Raptor 90
Additional Throttle Servo Location Close to Engine

Kit Includes :
1. Side Frames
2. Base Plates
3. Clutch mount w/ Screw
4. 14T Module-1 Pinion
5. 5x15x5 Bearing for Start Shaft
6. Engine Mount plates with screws
7. Shaft collar w/ Set Screw for Start Shaft
8. 4 washers (2 for Servo Block bottom / 2 between Clutch bell and pinion)
9. 10oz Gasoline Fuel Tank with Gasoline Stopper

Videos    Manual



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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