[NSRCA-discussion] C50-14xl Hacker vs. Jeti Spin 99

[Verne Koester]

Jon,

That last ¼” of travel is where the F3A brake is active, which BTW, is very
hard on planetary gears. When I was flying your combo, I had the brake on
for takeoff and esc activation. As soon as I lifted off, I’d hit the switch
we always used to use for retracts which put me in my “Flight Condition”. My
flight condition was pretty much the same as my takeoff condition except the
throttle trim was moved up to the point where it would just barely have the
prop turning over. At that point, the brake is inactive and you’ll have
instant throttle response with your stick. I also had a “Brake Condition”
assigned to a switch so I could have the brake active for certain maneuvers
like the stall with the 4-point down. For that condition, the trim is all
the way back down to where it needs to be to initialize the controller. 

 

Hope this helps.

 

Verne

 

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Jon Lowe
Sent: Thursday, September 26, 2013 7:20 PM
To: nsrca-discussion at lists.nsrca.org
Subject: [NSRCA-discussion] C50-14xl Hacker vs. Jeti Spin 99

 

I ended up with a C50 Hacker and a Spin 99 in a test airplane I bought.  I'm
ending up with a lot of deadband at the lower end of throttle stick
movement.  Settings are as follows:

 

0 degrees advance (on Andrew Jesky's advice also tried 3 degrees with no
difference.)

8kHz

1.0 to 2.0 ms throttle range fixed

Acceleration 1 sec.

Linear throttle (tried expo with no difference)

Lipo 10s

3.0v per cell

Slow-down

 

Brake:

Deadtime 0.2s

Initial 30%

End 40%

Brake speed 0.5s

 

The ESC arms ok.  I raise the trim until the motor just starts, then back it
down until it just stops, and I end up with at least 1/4" of movement on the
throttle stick before the motor starts.  I've used outrunners and Pletty
Advances with both Castle and OS ESCs and never had this problem before.
Never had an inrunner before.  What am I missing?

 

Jon

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