anybody try the electric converson (gov problem)

[hawkrock]

Ok i put the electric conversion into a raven frame to use in a scale project and am still having problems. The real problem is trying to explain the gear ratio to the gov software in the castle creations phoenix 100 esc. It can't understand the counter shaft and all attempts to fool it are meeting with nothing but frustration. In gov mode rpm setting all i get is 1400 rpm head speed (tach), and if i change the gear ratio for what should yield a higher head speed it drops to 1100 rpm. I am running a 780 kv z-power motor direct ( no clutch) on 8s. If i turn off the gov mode and just run the curve i can get 1780 (tach) head speed at 82 % on the throttle curve. Has anybody had anything like this happen?

[MotorRotor]

What pinion gear are you using off of the motor when you get 1400. from the governed CC?

What pinion when you get 1100?

Are you using the grey or the black primary gear?

Are you using the 13T or 14T primary gear pinion?

[hawkrock]

Ok phil here we go. I am using the pinion gear that came with the kit. I am using the black primary gear, and the 14 tooth primary gear pinion. This was and is the set up for all the testing Charles and i have been doing. With the gov turned off we got over 2300 rpms with the clutch on the motor, so we swapped it out for the direct drive gear that came with the kit. With the gov set for rpm mode we set the kv and pole count and used the original gear ratio for the raven and hawk pro of 8.6 to 1 and 9 to 1. This is where the problem starts. With the information the gov has it sets the rpm range and limits the range, to low and it can't govern properly and to high and it over runs the controller. As we attempted to extend the range up to a usable rpm (10 to 1) the controller thinks it's spinning at over 2000 but in reality only 1400. By putting on the direct drive that brought the rpms to 1780 at 80% gov mode off.

[Furious Predator]

Can you give us a screen shot of your CC settings?

Did you by chance calibrate the throttle end points?

[MotorRotor]

Using the direct 19T drive pinion on the black 55T primary gear, will give you a first stage gearing of 55/19 = 2.89. Your second stage ratio, using the 14T primary shaft pinion, which is matched to the 60T inside of the main gear, results in a secondary stage gear ratio of 60/14 = 4.28. So your final ratio is 4.28 x 2.89 = 12.36/1, not the 8.6 or 9/1 of the original Hawk or Raven.

The original ratio resulted from the first stage ratio of 2.11 (55/26) which uses a 26T pinion on the clutch, not a 19T as you are now using.

So you should be using the 12.36/1 gear ratio set into the CC with the direct drive. Give that a try.

[hawkrock]

Thanks so much for the info. I will give that a try. Hey, just one other thing, have you ever tried mixing an older 401 gyro with more modern electronics and had voltage problems. The gyro works for a while and then seems to lose its way? just curious.
Thanks again.

[MotorRotor]

Originally Posted by hawkrock

Thanks so much for the info. I will give that a try. Hey, just one other thing, have you ever tried mixing an older 401 gyro with more modern electronics and had voltage problems. The gyro works for a while and then seems to lose its way? just curious.
Thanks again.

The gyro and its' designated servo are only for use with a maximum 5.2V power supply, anything more and you will have problems.

[MotorRotor]

Originally Posted by MotorRotor

Using the direct 19T drive pinion on the black 55T primary gear, will give you a first stage gearing of 55/19 = 2.89. Your second stage ratio, using the 14T primary shaft pinion, which is matched to the 60T inside of the main gear, results in a secondary stage gear ratio of 60/14 = 4.28. So your final ratio is 4.28 x 2.89 = 12.36/1, not the 8.6 or 9/1 of the original Hawk or Raven.

The original ratio resulted from the first stage ratio of 2.11 (55/26) which uses a 26T pinion on the clutch, not a 19T as you are now using.

So you should be using the 12.36/1 gear ratio set into the CC with the direct drive. Give that a try.

Also of interest, is there is a chart in the manual area fro the CN1000EC that gives some interesting information on this conversions:

http://www.centuryheli.com/products/...tricsetup.html

And here:

http://www.centuryheli.com/products/...ricsetup2.html