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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › JR 9303 - No Throttle Lock Feature
12-09-2004 10:41 PM  13 years agoPost 1
EVO Newbie

rrNovice

Southampton, MA

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I just purchased the JR 9303 PCM Radio and now I find out that there isn't a Throttle Lock button or feature to prevent a 'hot start' or inadvertent increase in the throttle collective... For $450 they shouldn't have left out this feature.... I may return the radio for a Futaba 9 ch. unless someone has a solution... This is a serious safety issue... Newbie or Expert...

Jon

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12-09-2004 10:46 PM  13 years agoPost 2
rob_jones

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Perry, GA

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Huh? Do you mean throttle hold??

Blade 550X, T-Rex 450 Pro FBL

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12-09-2004 11:05 PM  13 years agoPost 3
RussR

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Tampa, Florida

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I don't have the brochure in front of me, but I'm almost certain it has one.
Have you set it up? It does need to be 'activated' even on the 9C...just a thought...

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12-09-2004 11:13 PM  13 years agoPost 4
EVO Newbie

rrNovice

Southampton, MA

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The JR 9303 has a Throttle Hold function for Autorotations and such... but I can'tfor the life of me find a Throttle Lock function, button, switch, etc.... I had a 'hot start' a couple of weeks ago with the an electric heli.... never want that to happen again... caused by my not setting the Throttle Lock function on my Hi-Tec Eclipse 7 radio.... had a button on the bottom left of the console.

Jon

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12-10-2004 12:36 AM  13 years agoPost 5
DeanM

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Oklahoma City, OK

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My Hitec Eclipse 7 has the throttle "Lock" function and I find it very useful ... However, I also have not found any such provision on my 9303. I don't think there is one. Some folks set up throttle hold to provide a similar function when starting.

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12-10-2004 12:39 AM  13 years agoPost 6
Al Magaloff

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12,199 Posts- Enough Time Wasted. See Ya!

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The throttle hold should work just fine. JR really isn't known for those wiz-bang type features. I wouldn't be too upset, really.

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12-10-2004 12:55 AM  13 years agoPost 7
TMoore

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Cookeville, TN

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Why is it a safety issue? Radios have been like this since the 60's. Why change now?

Send it back, tell them about it. I'm sure they will rush right out and change it after they fix the 140 degree CCPM.

TM

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12-10-2004 01:19 AM  13 years agoPost 8
EVO Newbie

rrNovice

Southampton, MA

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Most other radios I've checked out have the Throttle Lock feature.... It's a very simple circuit/program item and should be a required feature on every radio... if only to prevent some of the 'hot start' and other related injuries shown in the 'safety" section of RR... Newbie or Expert... Safety should be the first thing on every pilots mind before, during and after every flight.

Jon

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12-10-2004 01:48 AM  13 years agoPost 9
Saint728

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Honolulu, Hawaii

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Most other radios I've checked out have the Throttle Lock feature.... It's a very simple circuit/program item and should be a required feature on every radio...
Then get a different transmitter if you don't like it. The throttle hold does the same thing as your throttle lock. I can't see how you can have a hot start in the first place? What, you don't look at your throttle before you start your helicopter? How safe is that? Practice being safe and look at your transmitter and check that all your sticks and switches are where their supposed to be before you start your helicopter.

Take Care,
Cheers, Patrick

Check the hotties in my Gallery
http://rc.runryder.com/helicopter/gallery/9019/?all=photo

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12-10-2004 02:22 AM  13 years agoPost 10
fritzthecat

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Virginia Beach, VA

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Hmm, I had a Futaba 6x, 7U, 8U, 9C and 9Z and never heard of 'Throttle Lock'.
On my helis I always engage Throttle Hold before start.
On my planks and electrics I set up a pmix to disable the throttle and assign it to the same switch as Throttle Hold.

Fritz


'Send Money, Women and Guns!'

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12-10-2004 03:04 AM  13 years agoPost 11
EVO Newbie

rrNovice

Southampton, MA

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Duh... I do check my sticks and controls... I also always engage the throttle lock when moving my running heli from the pits to the takeoff area about 50' away.... Stuff happens!

I'll try the throttle hold... but that toggle switch can get moved as well as the throttle stick.


Jon

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12-10-2004 03:11 AM  13 years agoPost 12
rob_jones

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Perry, GA

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FWIW: The 9303 has a safety feature that beeps if you switch on the transmitter with the flight mode (and throttle hold, I think) in a position other than normal.

But after I managed to start up in IDLE UP anyway (different radio) I always, always, always check the switches and stick before startup.

You can't depend completely on some electronic device to save your @$$ if you're not paying attention.

Blade 550X, T-Rex 450 Pro FBL

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12-10-2004 03:17 AM  13 years agoPost 13
Saint728

rrProfessor

Honolulu, Hawaii

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Nevermind, edited by me.

Take Care,
Cheers, Patrick

Check the hotties in my Gallery
http://rc.runryder.com/helicopter/gallery/9019/?all=photo

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12-10-2004 04:13 AM  13 years agoPost 14
TMoore

rrMaster

Cookeville, TN

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Most other radios I've checked out have the Throttle Lock feature.... It's a very simple circuit/program item and should be a required feature on every radio... if only to prevent some of the 'hot start' and other related injuries shown in the 'safety" section of RR... Newbie or Expert... Safety should be the first thing on every pilots mind before, during and after every flight.
I've been flying since 1967, helis since 1977 and I've never seen anything more than TH on the major brand radios. Look around Dude, only Hitec as this one. The fact that they have it doesn't mean everyone else should jump out there and add it to their transmitters too.
Just stick with the Eclipse, they have you covered.

You may need to spend a few milliseconds and check things out before you fire up.

TM

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12-10-2004 04:15 AM  13 years agoPost 15
EVO Newbie

rrNovice

Southampton, MA

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Everything else being equal... there is always more than one solution to a problem... I'll try getting used to the Throttle Hold switch...give it a try anyhow. I really preferred the added security of a 'lock out --- tag out' type of device. Check the sticks before I start... One started... Set the Throttle Lock--- Walk out to the heli pad... check the sticks and mode switch again.... unlock the Throttle Lock... and away I go!

Thanks for everyone's comments...

Jon

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12-10-2004 04:32 AM  13 years agoPost 16
DeanM

rrApprentice

Oklahoma City, OK

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Hi Jon,

A simple check I use to help prevent hot starts:

F - Is my Frequency clear? A-Have I selected the correct model ("Aircraft") on my TX? R-Is my Receiver on? T-Is the Throttle at idle and the throttle Trim where I need to start? S-Are all transmitter (ie:mode) Switches in the correct position.

BTW ... the initials make it VERY easy to remember

Hope this helps,
Dean

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12-10-2004 09:44 AM  13 years agoPost 17
Al Magaloff

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12,199 Posts- Enough Time Wasted. See Ya!

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EVO, please don't ask JR to change anything! The last thing I want is a Futaba14Z!

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12-10-2004 01:06 PM  13 years agoPost 18
EVO Newbie

rrNovice

Southampton, MA

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Thanks Dean... I do all that including the initials before every flight. What Iliked about the Throttle Lock is that I can walk out to the takeoff area knowing that the throttle is locked out and if I trip or something... the throttle isn't going to increase. It's an added measure of safety.

Jon

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HomeAircraftHelicopterRadio - Servo - Gyro - Gov - Batt › JR 9303 - No Throttle Lock Feature
12-13-2004 01:30 AM  13 years ago •• Post 19 ••
DeanM

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Oklahoma City, OK

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Jon,

I agree ... I really appreciate the lock feature of the Eclipse 7...I'm somewhat surprised that more manufacturers don't use it.

I've found, though, that using the Hold function works just about as well.

Dean

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12-13-2004 01:38 AM  13 years agoPost 20
jb_turner

rrElite Veteran

USA

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An innumerable amount of things could happen in this hobby so just use your good sense and check your switches before starting.

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