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HelicopterRadio - Servo - Gyro - Gov - Batt › 9303 throttle cut using the trainer switch
10-08-2005 11:51 PM  12 years agoPost 1
crazzyjoe

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Grande Prairie​Alberta (Where it's​very slipp

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I would like to know how i can use the trainer switch as a throttle cut so i can leave the throttle trim alone. I think you can use the throttle hold function and just set it to a negitive value to shut it down but i would like to have the throttle hold function too on a different switch.

Can anyone help me out??

Joe

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10-09-2005 08:52 AM  12 years agoPost 2
Patriot

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Luton

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If the 9303 is like the 9XII then yes the trainer switch can be used as a throttle cut switch. In the menu list go to throttle trim THRO TRIM and you should see throttle cut activate this function and set up using the the % throw. If i remember correctly the idle must be below 25% to get the thrttle cut to work correctly. Hope this is of some help.

Just smile

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10-09-2005 12:30 PM  12 years agoPost 3
crazzyjoe

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Grande Prairie​Alberta (Where it's​very slipp

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Thank you i will try that.

Joe

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10-11-2005 01:38 PM  12 years agoPost 4
crazzyjoe

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Grande Prairie​Alberta (Where it's​very slipp

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Patriot,

The 9303 must be a little different i have sub trim in the list but not throttle trim.

I was told that it can be done, has anyone on here done it?
If so can you please tell me how it was done.

Joe

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10-11-2005 02:02 PM  12 years agoPost 5
mrNoodles

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Borlänge, Sweden

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Menu after MONITOR is THRO TRIM on the 9X´s.
Whats the last menu available in your 9303 menu?

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10-11-2005 11:08 PM  12 years agoPost 6
crazzyjoe

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Grande Prairie​Alberta (Where it's​very slipp

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Hi,

The last selection on my radio is the monitor menu. I can not find any throttle trim menu. I have throttle sub trim.
I don't understand why i don't have that menu. What i'm i missing here??? My xp9303 is a heli version.

Joe

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10-12-2005 01:01 PM  12 years agoPost 7
mrNoodles

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Borlänge, Sweden

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Joe
Doesnt your 9303 have a NON digital throttle trim??
If so I assume that they left the throttle cut out in the SW.

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10-12-2005 01:30 PM  12 years agoPost 8
crazzyjoe

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Grande Prairie​Alberta (Where it's​very slipp

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Yes it does have a non digital throttle trim. I just use that to set the idle and wanted to use a different switch to shut it down. I had it setup that way on my jr6102 and thought with all these switches on the 9303 i could set it up the same way.

Joe

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10-12-2005 01:54 PM  12 years agoPost 9
Hotwings

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Florida, West Palm​Beach.

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i tried every way i could think of, no throttle cut for me. i think it was a mistake not to include this feature on a great radio. also i miss my tach on my 9z when i use my 14z. oh well, Ron

Please cancel my clearance, I have the field in sight. Got my RW Turbine Waiver, need lottery!

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10-12-2005 08:23 PM  12 years agoPost 10
crazzyjoe

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Grande Prairie​Alberta (Where it's​very slipp

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I got the throttle hold to work as throttle cut but then i could not program a different switch for throttle hold. It would be nice if there was a way.

Joe

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10-12-2005 09:24 PM  12 years agoPost 11
marked23

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Lynnwood, WA

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You could set up another switch to mix down the throttle by 10 points or so. For instance, the gear switch.

Make a mix so that the gear switch chops the throttle by 10 points or so. 10 points.. just enough to drop it from idle to cut.

Then:
A) To kill the engine on the ground, at idle, hit the gear switch.

B) To kill the engine in the air, hit the gear switch first (your governor, if you have one, will keep right on trucking), then hit throttle hold to kill the engine.

I know there are some contests that require autos performed with the engine killed in the air. This was the only thing I could think of besides dragging down the trim and pulling down the pitch all the way while in normal mode.

You can also use the timer switch in the same way. You must use PROG.MIX 3 or higher. However hitting the timer switch toggles the state, once for cut, once again for normal. I thought the gear switch was more appropriate because you could visually confirm the state.

Note:
If you are at low throttle trim, and activate the gear switch mix, it will overdrive your servo and might tweak something in the linkage.

-Mark

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10-13-2005 12:23 PM  12 years agoPost 12
crazzyjoe

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Grande Prairie​Alberta (Where it's​very slipp

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Thanks Mark, i will set it up that way for now.

Joe

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10-13-2005 08:14 PM  12 years agoPost 13
crazzyjoe

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Grande Prairie​Alberta (Where it's​very slipp

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Mark,

Is there a way of setting up the lever on the right for throttle trim and just bring it down to shut it down??

The book is not much help and i'm new to this radio. I have the airplane manual coming because i was told there is alot of good info covered in there that is not covered in the heli manual.

Joe

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10-13-2005 08:43 PM  12 years agoPost 14
marked23

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Lynnwood, WA

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You might find the airplane version of the manual here:

http://www.horizonhobby.com/Shop/By...rodID=JRP9241**

I too am new to the 9303. I just got mine last week.

I hate those levers. I'm always moving them by accident... so I just disabled them in the device menu.

I don't think the trims are listed as "devices." I suspect that the best you could do is the same as the gear switch. In the device menu, set the lever to control Aux3 or something. Then mix Aux3 against the throttle.

I forget exactly how to do it, but there is a way to disable a trim by setting its step size (?) to zero. Not sure if it applies to all trims, or just the digital three.

The JR throttle trim is a "smart" feature, meaning it has a lot of special programming behind it. Making a switch or lever immitate the same functionality using just mixing is never going to give a better result. However, there has got to be a good alternative way to kill the engine.

If you don't need to kill the engine in flight. I recommend simply pulling down the trim lever as JR intended. It's not so bad.

If you really, really want this feature, import a 9XII and sell your 9303.

-Mark

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10-23-2005 08:03 PM  12 years agoPost 15
TerryG

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So. Daytona, FL

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crazzyjoe (and others),

Start here for an answer:

http://www.runryder.com/helicopter/...?highlight=TIMT

In this case, the master channel is set to TIMT, and the slave channel is set to THRO. You can use any of the mixes 3-6. Mixes 1 & 2 are far more powerful than this simple mix would justify.

The mix, when activated, will chop the throttle by whatever amount is set in the lower entry for POS0. To access the lower entry, you have to toggle the timer switch once. Toggle it again, and the upper entry is accessed. Leave the upper entry at 0 - you don't want any mixing in the power-on position. Set the lower entry for maybe 15 or so. You might need a higher or lower value depending on your throttle setup. Try not to use too high a number, as it will bind the throttle linkage.

If your throttle stick is above a certain point, the TIMT-> THRO mix will not shut off the engine, but it will still lower the throttle by the set amount.

If that's not enough info, I'll be happy to be more specific.


Terry

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10-23-2005 08:12 PM  12 years agoPost 16
TerryG

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So. Daytona, FL

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crazzyjoe,

I forgot to add one last note:

Toggle the timer switch once to engage the mix; toggle again to disengage.

This 'double action' switching is required because of the way the timer switch operates.

When the radio is powered up, the TIMT mix is always disengaged.


Terry

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10-24-2005 12:41 AM  12 years agoPost 17
crazzyjoe

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Grande Prairie​Alberta (Where it's​very slipp

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TerryG

I just tried what you said in your post and it works great!

I set it up so that when the collective stick is all the way down with the engine idling i toggle the trainer switch and it cuts the throttle. I used a +8 value to offset the throttle when activated. You can not forget to reset it because when you go to restart the heli it will not start.

If you hit the switch by mistake while flying the rpm will drop a little but not enough to get you trouble.

Thank you for that great info TerryG


Joe

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10-24-2005 12:47 AM  12 years agoPost 18
crazzyjoe

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Grande Prairie​Alberta (Where it's​very slipp

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Hi,

Where could i get more info on throttle mixes and how they work??
I have a XP9303 radio.

I'm new to helis just getting into forward flight.

Joe

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10-24-2005 02:41 AM  12 years agoPost 19
TerryG

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So. Daytona, FL

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You're quite welcome - always glad to help.

If you don't already have all of the manuals for the 9303, get them. I mean the Heli, Airplane, and Sailplane manuals. There is some information in each of them that is not in the others, and each have different examples of how you can use the mixes.

Beyond general information, the manuals aren't all that useful. Either do a search here on RR or just open a thread and ask - just like you did here. Someone will have the answer.


Terry

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04-19-2006 01:51 AM  11 years agoPost 20
CitationX

rrApprentice

Danville, IN

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TerryG,

I know this is an old topic but I am new to my 9303 and thanks to your guidance I have now set up throttle cuts for all my aircraft. My only question now is how can I keep from turning on and off the timer every time I flip the trainer (TIMT) switch? I realize you can use the 2 lower buttons on the face of the transmitter but I would prefer that only those buttons have control over the timer and not the trainer (TIMT) switch.

Thanks

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HelicopterRadio - Servo - Gyro - Gov - Batt › 9303 throttle cut using the trainer switch
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