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Dreamworks Gear System Failsafe Addendum - 1/31/2013 5:11 PM   
lov2flyrc



Posts: 5859
Score: 109
Joined: 12/6/2001
Last Login: 5/23/2013
From: New Smyrna Beach, FL, USA
Status: offline 		Hi Guys,

We have discovered two small bugs in our GSF-150 Failsafe device, neither of which affect the unit’s performance but can cause some programming headaches. We are addressing these bugs internally however; I did want to point them out as it will eliminate any frustration during the programming procedure. We have also had some confusion on the GSF-150 plug orientation. The signal wire (Orange if JR, White if Futaba, Yellow of Hitec) should be facing up when plugging the lead into the GSF-150 RX Input/Outputs.

When programming the Gear Up / Gear Down points into GSF-150, the pulse width from the RX is displayed on the screen. The typical pulse width from the RX ranges from 1000us to 2000us (varies depending on channel ATV setting). You must program the GSF-150 so the Gear Down pulse width is the low side and Gear Up pulse width is the high side. If this programming method places the switch in the opposite position desired, simply reverse the gear channel in the TX.


We have discovered an anomaly when using the GSF-150 with a Jettronic Sequencer. When the GSF-150 is in line with the Jettronic sequencing unit, we have found in some programming instances, an un-commanded quick cycle of the gear is exhibited. If using the GSF-150 with a Jettronic sequencer please follow the procedure below for programming compatibility:
• In the transmitter, reduce gear channel ATV/end point setting to 40% in both gear up and gear down positions
• Plug in the GSF-150 to the gear output channel of the RX and program Gear down / Gear up trigger points as per GSF-150 instructions making sure "Gear Down" is low pulse width and "Gear Up" is high pulse width. Cycle through until programming is completed.
• Unplug the GSF-150 from the RX
• In the transmitter, increase gear channel ATV/end point setting to 140% in both gear up and gear down positions
• Plug the Jettronics sequencer into the RX gear channel
• Set coding switch to SP, with gear switch in down position press (-) button, move switch to gear up position and press (+) button.
• Return sequencer coding switch to desired mode (1-2-3)
• In the transmitter, return gear channel ATV/end point setting to 100% in both gear up and gear down positions
• Connect GSF-150 to RX gear channel
• Connect Sequencer to GSF-150 output (A1-A2)
• Program sequencer timing as needed. (make sure system pressure is above failsafe setting for gear to cycle via TX)

As stated, we are addressing these bugs internally. While this only affects the programming procedure of the GSF-150, we will revise the software/hardware to eliminate these small issues in the future.
Todd


_____________________________

Todd Witkoff
Dreamworks Model Products LLC
www.dreamworksrc.com
Your Source For RC Jet Accessories!

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