Introduction - Helibug Open Source Gas Conversion
 

Helibug has released what its called the "Open Source" conversion for Align TRex 700 helicopters

Its an all aluminum conversion that allows for multiple gear ratios to be used as well as multiple power plant types. Previously the conversions were available for specific motor formats and gear ratios only.

This is more of a split frame design with a common chassis component with "plug in" power modules.

Known power options are the Zenoah RC motors as well as the PUH format. Rumor has it there may be other engine options down the road as the chassis supports a wide variety of gear ratios

there is also an option to convert existing HB7-RC conversions to this configuration

to read more about it visit here: Helibug Open Source

If i understand Ali correctly even turbine engines can be used with this kit. Very impressive.

I understand there is still some confusion about how this works so I'll try to explain it here

The Open Source is a flexible configuration helicopter. It consists of a common upper frame component that uses TRex drive train parts.

http://helifreak.com/attachment.php?...1&d=1337128439

You can see that its a complete upper frame assembly. This is setup such that a number of "plug-in" power modules are being developed that are interchangeable.

here's the Power 460 module which uses the CY460 motor

http://www.helifreak.com/attachment....5&d=1337098672

So you get the Open Source module and build it using a donor Trex model.

then you get the power module that you want to complete the model. You can get several of these and convert your model rather easily whenever you want. Its similar to the glow/electric flexible power setups that you've seen before but with more options.

The initial offerings are for the Zenoah/CY RC motor and for the CY460 motor. Other modules are being developed for other power systems including turbines.

http://helifreak.com/attachment.php?...1&d=1337129080

Open-Source w/ Core7 uses Zenoah Clutch and HPI Clutch bell

http://www.helibug.com/HBCore.htm#1


Does anyone has experience with that version? If yes, which engine and FBL controller do you use?
In its description: "No Vibrations at all with a stock engine". Is that true? I'm thinking about using a stock G290RC.
Is the vibration level good enough for most FBL controller to work properly?


Thanks for your response.

thats going to be very dependent

the 240 is the smoothest of the stock engines. it run up to about 12K without too much vibration. With the std gear ratio, thats about 1800 RPM on the head.

If you can live with the power of the 22cc motor and keep the head speed at 1800 RPM or slower you should have pretty good results

I've use the Futaba 750 and I know others have used the BeastX, VBar and Helicommand without any issues. These days its just a matter of how you mount the sensor, the mainstream systems will work fine. When you get out into the fringe/low cost systems, all bets are off unless you test it.

I am using a stock G290RC with a BeastX FBL unit. The kit i have is HB7-RC. The engine makes a little vibration even if it's nicely tuned but that causes no problem. BeastX can tolerate it with no problem.

Azalin,
What clutch are you using?
I want to know whether the stock Zenoah clutch and HPI clutch bell would cause more vibration or not.