Guru-Z produced 300-sized helicopters with a variety of inter-compatible options for frames, tail and head options. Many parts can be used with E-Sky Honey Bee components and many are very similar to and compatible with Compy 300 components.
Guru-Z parts have been hard or impossible to buy since late 2010, with the main stockists in Hong Kong failing to ship orders despite taking payment via PayPal. Many users on forums suspect that the company, which may also own the stockists, is defunct.
Guru-Z's marketing material states:
Guru-Z is a new company established by a group of experienced designers and pilots of radio-controlled flying gadgets. Our office is located in Hong Kong and our factory in Shenzhen, China. Our expertise is in the design and production of High Quality Fiber, Plastic, CNC, or Hybrid parts.
They are specialized in Micro- and Mini-Class EP helicopters. After all these years, they found that the main problem of the "Birds" available in the market is COMPATABILITY across different brands and models. For example, end customers often cannot combine the well-designed head of Bird A with the preferred tail of Bird B. That was why they formed Guru-Z to develop a set of RC designs / products that offers the highest degree of compatibility across all brands and models of micro-helicopters currently in the market.
The highly compatible platform of designs they have developed is not about a single Bird. The compatibility they have achieved delivers the maximum CHOICES for our customers! Based upon this platform of designs / products, starting from the FiberFrame, you may start building your own heli! There will be a wide range of choices for every part of your Bird, due to the compatibility of our products. Depending on your preferences, you have flexibility along various dimensions: Head, tail, shaft (3mm vs 5mm), boom size, boom length, tail drive mechanism, main-to-tail ratio, servo layout, battery tray, skid/ski etc. With the large degree of flexibility, you may choose to build your heli in your own style! Most importantly, due to the high degree of compatibility of our designs, the heli parts you purchase at any nearby shops can almost certainly be used together with our designs / products.
That's what mean by "Guru Z - Making more Possible"
Guru-Z products are designed as a range of options that can be mixed and matched. There are several basic frame designs:
Each of these can be used with a 5mm (ETRM), 8mm or 12mm (belt-drive) tail boom and with a 3mm or 5mm shaft. The 3mm shaft gives compatibility with a wide range of heads, including Esky Honey Bee FP or CP2, Compy 300, or Guru-Z's own FP or CP heads.