Guru-Z » Radon Series

GS3-2423 Tail Boom Support

mystic — Thu, 20 Aug 2009 06:37:28 +0000

Fig.1

GS3-2423 Tail Boom Support can further reinforce the structure of tail boom and fiber frame. With the support of 2 x 2mm Carbon Fiber force, viberation from tail can be damped away, which gives a more solid rudder to the whole helicopter.

Fig.2

Fig.3

Figure 3 shows the installation on Neon Series Fiber Frame, the whole installation process is easy and quick. Just screw up the 2mm CF rod on the landing skid position, and connect with the tail fin (Figure 5)

Fig.4

Fig.5

Alternatively, GS3-2423 Tail Boom Support can be installed in Xeon, Argon, Radon series. Figure 4 shows how it is installed on these series lower frame.

New version of landing skid

mystic — Mon, 17 Aug 2009 06:35:46 +0000

We have established a new version of landing skid, a fillet weld is added into the design to reinforce the whole structure of the skid.

The landind skid is now become more durable and take a less chance to break during hard landing or crash

Advantage of 4mm ball-link over 3.5mm

mystic — Thu, 03 Jul 2008 09:05:28 +0000

4.75mm ball and ball-link are the most common combination in 400 class market, while 3.5mm ball and ball-link dominates the 300 class market. Smaller size of ball has less angle of joint due to the screw size cannot be too small. For bigger size, it is a kind of overhead that it need a larger gap and space for the large ball-link to move freely. In our design, we get a balance point that choosing 4mm ball-link with small stem to ensure have at least 30 degree angle of joint.

Gear Ratio of our Belt Tail System

mystic — Thu, 03 Jul 2008 09:01:48 +0000

Our system provides three kinds of gear ratio (main gear : tail gear)

1 : 4.20
1 : 3.82
1 : 4.00
1 : 3.64

Pilots need to choose the correct gear ratio to suit their helicopter. Here is some basic rules:

Limited the tail rotor headspeed with in safety range, max. is 12000rpm Too high headspeed will CAUSE SERIOUS DAMAGE AND HAZARDS
Tail rotor headspeed should be high enough to give a powerful and sensitive rudder ( at least enough for gyro control)
Too high tail rotor headspeed will cause tail hunting
Using longer and heavier blade requires a stronger rudder; Higher headspeed or long rotor blade may helps.
Longer tail will gives a strong tail, low headspeed tail rotor will be sufficient.
FP helicopter uses a low headspeed tail; CP helicopter uses a high headspeed tail;

Here is our gear lists for different ratio combination:

[GS3-2406] 40T belt gear, [GS3-2407] 42T belt gear,
[GS3-2417]10T tail gear, [GS3-2418] 11T tail gear.

Angle of tail blade grip

mystic — Thu, 03 Jul 2008 08:50:03 +0000

The default angle of the tail rotor is 6 degree when the tail pitch slider is in center position. It gives an offset to the tail rotor to cancel the reaction torque generated by the main rotor within limited moving range. For example, traditional design of tail rotor have a range of angle from -8 degree to +8 degree. Now our design has a range from -2 degree to +14 degree that can maximize the range. The tail rotor does not require so much negative angle due to the existing reaction torque.