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  1. #1
    lov2flyrc's Avatar
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    New Digital Gear System Failsafe

    Our new digital Gear System Failsafe is now available!!





    Our new Digital Failsafe is a must have device if you are using Pneumatic driven landing gear. This small apparatus monitors air pressure, and should it fall below a user preset value (30-90psi), the landing gear are automatically lowered before all the air bleeds out of the system. The Failsafe will work with servo driven retract valves as well as electronic valves. Installation is a snap with simple, intuitive programming. Absolutely the finest Gear Failsafe available!

    Features:
    ● 16mm x 10mm LCD Display Screen
    ● Accurate Air Pressure Display
    ● Programmable Failsafe Trigger Value
    ● Compatible with 2.4 Ghz Radio System
    ● Intuitive and simple programming
    ● Four Pressure Unit Selection PSI / Kg-cm2 / BAR / Kpa

    Specification:
    ● Operating voltage: 4.8~7.4 Volts DC
    ● Operating pressure range: 0~125psi
    ● Air Pressure accuracy: ± 1 %
    ● Temperature range: -10 to +75 °C
    ● Dimensions: L 64 x W 30 x H 14 mm
    ● Weight: 29 g. (incl. mounting plate)

    Includes:

    Digital Failsafe Module
    6" Male to Male Radio Lead
    M3 Barbed Airline Fitting
    Instruction Sheet
    Todd Witkoff
    Dreamworks Model Products LLC
    www.dreamworksrc.com
    Your Source For RC Jet Accessories!

  2. #2

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    RE: New Digital Gear System Failsafe

    Love it..I'll be ordering one when I figure out what my next winter project is..

  3. #3
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    RE: New Digital Gear System Failsafe

    Todd,
    How does something like this handle landing gear doors? Ie. if your doors are set up on a separate system (its own tank, valve, etc) with a sequencer does it detect the pressure in the retracts and then send a signal to the sequencer to start the normal deployment sequence?
    Sean McHale - Malvern, PA
    "Strive for simplicity. You never have to repair what you leave out." - Bill Lear
    Kingtech Turbines - www.kingtechturbines.com

  4. #4
    DiscoWings's Avatar
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    RE: New Digital Gear System Failsafe

    more than likely it simply sends a signal to the channel ie. deploy the gear so I don't think it matters what complicated gear door mech or gears you may have setup.

    E.G. pressure falls below 50 psi, send signal to RX to deploy the gear.

    So basicaly you wire it like this;

    1, Gear Signal wire from your servo or electronic valve goes into the dreamworks air fail safe input.

    1, Output from the dreamworks air fail safe goes into the Gear channel on your rx.

    This basically sets it so that the air fail safe controls the gear channel

  5. #5
    husafreak's Avatar
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    RE: New Digital Gear System Failsafe

    Sweet. Great product. I have a prototype electronic gearsafe with digital readout in my Electra, maybe it will be released for sale maybe not. I will refrain from posting the brand out of respect. But suffice it to say I will be using a low pressure gear safe from now on having experienced its usefulness on flight 30. If you ever retract your gear only to see it pop back down a few seconds later it will have paid for itself!

  6. #6
    CARS II's Avatar
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    RE: New Digital Gear System Failsafe

    Love it! price is good too, I will be getting one for the airplane I'm building ( winter project )
    Carlos R.
    Go fly a Jet today.

  7. #7
    lov2flyrc's Avatar
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    RE: New Digital Gear System Failsafe


    ORIGINAL: smchale

    Todd,
    How does something like this handle landing gear doors? Ie. if your doors are set up on a separate system (its own tank, valve, etc) with a sequencer does it detect the pressure in the retracts and then send a signal to the sequencer to start the normal deployment sequence?
    This unit goes between your RX and whatever device you wish to control failsafe on; be it a valve, servo or sequencer. I will simply trigger a gear down signal when pressure falls below the user preset value.
    Todd
    Todd Witkoff
    Dreamworks Model Products LLC
    www.dreamworksrc.com
    Your Source For RC Jet Accessories!

  8. #8

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    RE: New Digital Gear System Failsafe

    It's a pity many of us will need to buy two, one for the doors an one for the retracts. And if it will work when using two will propably wary.
    For the second generation we would like it in be a two channel failsafe with a slight delay betwen the two. Just some thoughts :-)

    But of course its better to ruin some gear doors than other things on the plane :-)
    Ela

  9. #9

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    RE: New Digital Gear System Failsafe

    I know it isn't the proper order but won't the gear just push the doors out of the way when coming down under failsafe. I don't have any jets with complicated doors but on my F-16 that is what happens.

  10. #10
    lov2flyrc's Avatar
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    RE: New Digital Gear System Failsafe

    Not sure I follow Gentleman...
    If you have gear doors, then you have a sequencer driving the timing. The failsafe would be placed between the RX and the sequencer. Should a failsafe trigger occur, the gear down signal is sent to the sequencer and your normal gear/door down sequence is activated. No need for two units!?
    Todd Witkoff
    Dreamworks Model Products LLC
    www.dreamworksrc.com
    Your Source For RC Jet Accessories!

  11. #11
    lov2flyrc's Avatar
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    RE: New Digital Gear System Failsafe

    Just a correction;
    Operating voltage is from 4.8~7.4V.
    We upped the voltage on the production model, 6.8V max was prototype voltage.
    Todd Witkoff
    Dreamworks Model Products LLC
    www.dreamworksrc.com
    Your Source For RC Jet Accessories!

  12. #12

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    RE: New Digital Gear System Failsafe


    ORIGINAL: lov2flyrc

    Not sure I follow Gentleman...
    If you have gear doors, then you have a sequencer driving the timing.
    Not if you use sequencing in the tx or rx or powerbox etc etc. Most of my models use sequencing in the tx driving 2 separate channels, though my programmable rx can also do sequencing using 1 channel from tx and splitting it out to 2 servos. I believe some powerbox products can do the same.

  13. #13

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    RE: New Digital Gear System Failsafe

    if a power box does sequencing, then you have an TX channel going IN to the power box, the failsafe plugs into the powerbox INPUT and then the TX channel into the Failsafe.
    If you use the radio to do your sequencing, which I think only 1 or 2 radios can do that... so you will have to buy two thought not sure if that is wise given they wont sequence.
    Personally using a seuqencer is the best option as you can control the doors and gears on 1 channel.

    I personally use the UP3 valve. Much better valve than the robart type stuff.

    At $82 these are a good deal, a pressure transducer alone is over $60 from my research of building my own, otherwise I would of.

    I am currently running my jet without one and will be adding this ASAP. I saw a jet land with gears up on the runway, perfect landing and it still messed it all up.

  14. #14
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    RE: New Digital Gear System Failsafe

    Digikey has freescale pressure sensors about 10 bucks each. Even if you rigged this yourself it would cost almost as much overall and be 5x the size and 1/10 the reliability!
    Matt

  15. #15

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    RE: New Digital Gear System Failsafe

    Great product Todd and reasonable price. Just ordered 3 ... Thanks man!

    Azzam

  16. #16

    RE: New Digital Gear System Failsafe


    ORIGINAL: essyou35

    if a power box does sequencing, then you have an TX channel going IN to the power box, the failsafe plugs into the powerbox INPUT and then the TX channel into the Failsafe.
    If you use the radio to do your sequencing, which I think only 1 or 2 radios can do that... so you will have to buy two thought not sure if that is wise given they wont sequence.
    Personally using a seuqencer is the best option as you can control the doors and gears on 1 channel.

    I personally use the UP3 valve. Much better valve than the robart type stuff.

    At $82 these are a good deal, a pressure transducer alone is over $60 from my research of building my own, otherwise I would of.

    I am currently running my jet without one and will be adding this ASAP. I saw a jet land with gears up on the runway, perfect landing and it still messed it all up.
    Not if you use SBUS (serial) receivers directly into one of Powerbox's SRS products
    Carsten Groen

  17. #17

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    RE: New Digital Gear System Failsafe

    Hey guys this thing works but you should be cautious when installing. Ablsolutley have your retract servo disconnected when programming (unless travel is equal on both sides). Also it will only program in one direction (gear down lower pw and up is higher) so you may have to replumb or flip linkage around. Otherwise works flawslessly!! I'll make video if enough interest on programming it. Thanks Todd! Wish I would have had one on my bandit . Scott
    If it works use it,USA JWM TEAM MEMBER

  18. #18

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    RE: New Digital Gear System Failsafe


    ORIGINAL: S HARRIS

    Hey guys this thing works but you should be cautious when installing. Ablsolutley have your retract servo disconnected when programming (unless travel is equal on both sides). Also it will only program in one direction (gear down lower pw and up is higher) so you may have to replumb or flip linkage around. Otherwise works flawslessly!! I'll make video if enough interest on programming it. Thanks Todd! Wish I would have had one on my bandit . Scott
    A video would be great Thanks in advance.

    Azzam

  19. #19

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    RE: New Digital Gear System Failsafe

    I'll see what I can do. Scott
    If it works use it,USA JWM TEAM MEMBER

  20. #20

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    RE: New Digital Gear System Failsafe

    Would appreciate a video also Scott.

    Jerry

  21. #21
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    RE: New Digital Gear System Failsafe

    I just bpught one of theswe units. Any field updates or videos yet?
    Alan
    ~Team JR
    ~JetCat USA Rep.
    ~Yellow Aircraft Rep.

  22. #22

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    RE: New Digital Gear System Failsafe


    ORIGINAL: SkyKnight

    I just bpught one of theswe units.* Any field updates or videos yet?
    I have one installed on my jet and luckily I didn't need the fail-safe feature yet

    I, however, have tested it on the bench and it works flawlessly. Setting it up is really very easy. All you need to do is set the travel on your radio (if it is a servo) then hook this unit between the servo lead and the receiver. You then follow the (very clear) instruction paper that comes with the unit to set it up. The device reads the pulse width rate of the gears switch on the DOWN and UP positions (just like the ECU learn feature).

    Azzam


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