Marco1
02-03-2008, 11:32 PM
A number of observations on the blade CX2 after 6+ months.
Fling outside? Only in the best of conditions. The heli is light, the heli is underpowered, and the fixed pitch / in-efficient swash setup is very limiting
Forward flight issues - Notice that elevater does not tilt the swash truly fore and aft, nor does airleron tilt it truly side to side. More of a diagonal motion. That's why forward flight is a challenge (but add airleron and watch it take off!)
The flybar is too long. Sooner or later, especially if you try to fly in wind, you'll hit the lower blade with the flybar, and then you're picking up heli pieces. I trimmed the hooks off each end and then added Axe weights. Easy mod - easy to balance, cost less than $10. Try wheel collars, a packege of 10 cost $3. I've never had a blade strike since.
Toilet bowl - upper blade tracking contributes, but also make sure the heli is balanced fore and aft and modify the flybar. Consider the impact of the flybar on the heli. It is essentially a gyro spinning at the end of a lever (the top of the rotor shaft). That gyro wants to maintain its attitude and exerts considerable influence over the heli below it. As a result you get a pendulum effect (aka toilet bowl) I've had to add a binder clip to the tail of mine to balance. Shortening the fly bar and going to smaller weights will reduce the impact of the gyro (at the expense of stablility at hover)
Fling outside? Only in the best of conditions. The heli is light, the heli is underpowered, and the fixed pitch / in-efficient swash setup is very limiting
Forward flight issues - Notice that elevater does not tilt the swash truly fore and aft, nor does airleron tilt it truly side to side. More of a diagonal motion. That's why forward flight is a challenge (but add airleron and watch it take off!)
The flybar is too long. Sooner or later, especially if you try to fly in wind, you'll hit the lower blade with the flybar, and then you're picking up heli pieces. I trimmed the hooks off each end and then added Axe weights. Easy mod - easy to balance, cost less than $10. Try wheel collars, a packege of 10 cost $3. I've never had a blade strike since.
Toilet bowl - upper blade tracking contributes, but also make sure the heli is balanced fore and aft and modify the flybar. Consider the impact of the flybar on the heli. It is essentially a gyro spinning at the end of a lever (the top of the rotor shaft). That gyro wants to maintain its attitude and exerts considerable influence over the heli below it. As a result you get a pendulum effect (aka toilet bowl) I've had to add a binder clip to the tail of mine to balance. Shortening the fly bar and going to smaller weights will reduce the impact of the gyro (at the expense of stablility at hover)