View Full Version : 9254 failures
The denizens of RunRyder were plagued (about a year ago) with a spate of 9254 failures.
Few people on this forum seem to report 9254 failures, and I wondered whether there was a) still a problem and b) whether it was as great a problem as the Runryder forum seems to make out.
It's always difficult to know whether a problem is major, or just seems that way because of the power of the internet to connect people.
K
853sp
12-26-2007, 06:48 PM
I have been using a 9254/GY401 combination on an T Rex 600e since Easter this year with no problems experienced so far.
Regards,
853sp
WayneBrown
12-26-2007, 07:18 PM
there was never a problem, folks oveRR there thrive on drama and many have no F'n idea how to setup or fly anything but a keyboard.
damn, was that my outside voice again?
frogbmth
12-27-2007, 11:30 AM
:lol::lol::lol::lol::lol::lol:
Thanks,
If I type in '9254' and 'failure' in google, I get directed to a single thread on Runryder and almost nowhere else.
This is for an AP ship, so a crash could be very expensive. On the other hand I keep reading these threads about people getting failure after failure, and keep thinking they must be doing something consistently wrong... Or they got all their servos from the same shop, which had a bad batch...
I think I'll keep it, but be very careful about voltage and use lowish gyro-gains etc... And I'll put it on the servo-tester for a few hours before flying.
K
BarracudaHockey
12-27-2007, 11:58 AM
Too much gain and exhaust soaked servos IMO, I've got 3 Raptors with hundreds of flights between them with 9254's
DavidH
12-27-2007, 12:04 PM
The majority of the time with people that have failures on tail servos. They turn the sensitivity of the gyro up too high. With the GY gyros, the tail can be held very well with a low gain and not overwork the servo. If the gain is set high, it does not hold the tail any better than a lower gain, but it works the servo till it gets to hot and as a premature failure,
If the mechanical setup on the tail is correct. A GY gyro will hold the tail with gain set to 40% just as well at it would set to 80%. The difference being at 80% the servo is constantly moving. This heats it up more than normal and the motor in the servo fails.
Most of the failures I have seen is because of a high gain setting.
David