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Post by admiralev on Oct 23, 2008 23:26:49 GMT 1
Ive been didlying around with my new JR and lipos and today i went to run the lipos on the bench for 10 minutes to discharge them. the other day this worked fine...no problems. today after 5 minutes on the bench i went to shut off the motor and when the throttle stick was returned to its lowest position the motor wouldnt cut out. all trims were neutral. i tried the other battery and had the same problem. the motor will go up to 100% but falls to maybe 40% when returned to the lowest level (what should be off). im worried now because if ths happens in the air i wont be able to land and will have to fly until dead battery (or LVC) and crash  . any ideas as to what the problem is? i think im having something go haywire between my TX and RX. thanks admiralev |
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Post by Ellis on Oct 24, 2008 3:05:00 GMT 1
I'd get a Spektrum, it cures everything. I'm sure Fly would agree.
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Post by duck9191 on Oct 24, 2008 3:25:38 GMT 1
does it have any type of landing program? my eclipse has a landing switch which will add a little throttle and up elevator for landing. annoying when you bump it and your plane starts to roll away. i would check to make sure noting on your tx got bumped.
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Post by admiralev on Oct 24, 2008 4:16:41 GMT 1
by bumped do you mean accidentally pushed? the funny thing is that it was working fine the other day and I didnt change anything in the programming.
haha ellis the reason im with JR now is because of specktrum!
admiral
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Post by admiralev on Oct 24, 2008 4:23:39 GMT 1
i just looked at everything and nothing seems to be out of the ordinary. im working on my aileron wing soon so i havent programmed in any mxing yet. im so frustrated....i hope this isnt something that needs to be sent in  |
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Post by Ellis on Oct 24, 2008 4:51:37 GMT 1
haha ellis the reason im with JR now is because of specktrum! admiral ;D Ellis |
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Post by flydiver on Oct 24, 2008 5:02:06 GMT 1
There is a throttle trim tab (just like the E/R/Aileron). Make sure that is centered. You can even trim it down if you have to but I don't for over a half dozen different combination of motors, ESC, RX.
There is also a throttle adjustment in the menu setting. I've never messed with it but it might do something you don't want. You'll just have to read the manual on that.
If all else fails, delete the model setting and start fresh. You could have it in heli mode or some gawd awful thing. In fact that may be easiest.
You need to learn your way around the programming menu anyway.
BTW-it's generally not a great idea to bench discharge batteries with the motor. No air > gets hot.
AND-unless the lipos are going to be sitting awhile just cycling them down for storage is wasting a cycle. These are not NiXX-they won't benefit from cycling.
I don't think I'd take them to 50% unless they were going to be sitting over a week, but that's a semi-educated guess.
In general I fly mine, then store them in a ziploc in the fridge (not freezer) if NOT flying them soon. If flying tomorrow or in a day or 2 I charge and leave them out.
Remove from fridge, allow to warm up in the ziploc before charging.
Charging a cold battery can allow for an over charge condition once it warms up.
PS - Cellpro has a 'cold charge' auto setting that will not charge your battery quite full if the charger is cold (temp sensor is in the charger NOT the battery). That way if you charge it outside in the cold and bring it in you don't end up (hopefully) with a dangerously overcharged lipo when it warms up. Good idea, hey?
fly
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Post by admiralev on Oct 25, 2008 4:28:45 GMT 1
hey fly i found a setting for throttle cut but havent found a throttle adjustment setting. maybe i will just delete the model. i didnt think of that...thanks for the tip.
as for the lipos, they were sitting for over a week. i also never thought to put them in the fridge. i will start that habit too
ill let you know if redoing the model works
admiral
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Post by flydiver on Oct 25, 2008 4:36:34 GMT 1
The little tab, on the side, right next to the throttle itself. It's the same as your right side trim tabs.
I have to look into the throttle adjustment myself sometime (not just the trim). I haven't had any problems so it hasn't seemed a priority but I'm flying flat foamiess more and doing a lot of throttle work now. Went through about 7 batteries today. That's not a lot of time since they are 3-5" each.
LMK about the throttle.
fly
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Post by admiralev on Oct 26, 2008 22:48:19 GMT 1
i just deleted the model and didnt reprogram anything and im still having the same problem. as soon as you connect the battery the throttle kicks on. i played with the throttle trim and it doesnt do anything in any position. i cant find that throttle adjustment setting you are talking about. all there is is a throttle cut and some mixing functions which i havent messed with and were also reset to default
im doing fine with all of the programming settings and i know my way around the manual very well. im not really sure what to do at this point
admiral
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sleddog
Flight lieutenant
Posts: 39
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Post by sleddog on Oct 27, 2008 1:29:15 GMT 1
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Post by flydiver on Oct 27, 2008 2:06:05 GMT 1
He's using a JR. His Spectrum didn't 'cure everything'.
Did you program the Pixie?
Maybe got the throttle setting off of [auto calibrate]?
I'm starting to suspect that may be the problem.
The only way I can think to test that is re-program or try it with a different TX.
If you suspect the Pixie Castle does answer the phone and will work with you. I had a TBird go bad and they replaced it immediately.
If you have a 2nd RX I'd swap that out to eliminate that as a problem source just in case.
Also, do your test with TX the antenna down and the TX about 10 feet away.
AND try it outside (different physical location) in case there is something in the immediate area feeding in bad signals.
fly
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Post by admiralev on Oct 27, 2008 2:40:36 GMT 1
i reprogrammed the pixie earlier today and auto-calibrate is on. the thing that baffles me is that it was working fine and then just went haywire. with the model reset everything went back to the way i had if before (nothing really programmed) when things worked...and im still not working properly. unfortunatley i dont have another RX to test the model with. i dont really want to run out and buy another RX when i dont think there is anything wrong with mine. i think i will call CC tomorrow and see if they will ship me a new one. i hate when you get gaffed on shipping when something you buy doesnt work and you have to ship it back...
thanks for your help fly. this is really bugging me. im fed up with it all
admiral
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Post by flydiver on Oct 27, 2008 4:37:15 GMT 1
If CC thinks it's a problem with their ESC they'll take a credit card #, ship you a new one with a pre-paid return envelope, and your card will not be dinged as long as you return the old one. At least that's what they did with me. I had new ones in 2-3 days.
Can't say I blame you. You've had a rash of frustration. This is right up there with the buddy I told you about that had so much trouble with his Futaba. In his case a JR7202 cured it. I was so envious I bought one too. With these units I can use whatever channel I want and have the crystal for. It kind of bridges the gap before 2.4 came out.
Fly
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Post by admiralev on Oct 27, 2008 13:27:31 GMT 1
ok, i think i will call them later today and at least cut that problem out. ill let you know if that was it...although im not banking on it. if not, i guess i will pick up a cheapo RX to cut that out too. at least then i would know that it has to be something in the TX.
admiral
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. any ideas as to what the problem is? i think im having something go haywire between my TX and RX.
