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crashit
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Location: Seville, Spain

PostPosted: Sat Feb 27, 2016 3:42 am
PostPost subject: Throttle problem
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Hello
Smile
I have a Toylab Cyclone Aluminium helicopter - 3 channel
Dimensions: 24 x 11 x 4.5

All of a sudden it seems to have a throttle control problem.
When the battery is fully charged it shoots up to the ceiling. I have to quickly throttle off before it crashes.
When the battery has lost some power it's easier to control but the helicopter still fails to respond, as well as it used to, to the throttle.
I suspect a signal fault.

Can anyone cast some light on this please

Thanks!
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Burgess
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PostPosted: Sat Feb 27, 2016 4:50 am
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Hello and welcome to the forum crashit.

Is there a flat spot to the throttle curve, that is, does the RPM suddenly increase irrespective of how smooth you move the throttle stick?


Burgess
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crashit
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PostPosted: Sat Feb 27, 2016 7:19 pm
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Hi Burgess

Thanks for the welcome and reply.

Yeah, that's exactly what happens.
Is it serious?

Thanks!
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Burgess
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PostPosted: Sun Feb 28, 2016 3:12 am
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The problem could be the track in the variable resister throttle pot on the transmitter, or the electronic speed controller in the receiver.

Depending on where you got the heli from, local model shop or on line vendor, contact the vendor.

If your LMS have those helis, they may be able to check the response of your heli to another transmitter.



Burgess
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crashit
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PostPosted: Sun Feb 28, 2016 3:29 am
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Hello Burgess

Ok. I got it from a toylab toy stand here.
I'll take it along next week and see what they say.
I would image that it's suffering from PTCS - post traumatic crash syndrome.
I'll post an update as soon as I have one.

Thanks very much for your reply

Crashit
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tombo242
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PostPosted: Sun Feb 28, 2016 7:28 am
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Hi Crashit,

You've got a great helper there in Burgess, One of the best. Good to see you guys on the ball here. I'm sure you'll get it sorted - I'll be watching to see if I can stick my oar in!

Tom.

Keeping the spammers at bay Very Happy
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Burgess
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PostPosted: Mon Feb 29, 2016 5:43 am
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Thought: Have a look at the IR receiver diode, if under the main frame, it may have gotten pressed up so as to mask incoming IR signals, also check the security of the receiver board.

Here's a photo of one of my little V-Max IR coaxal helis, notice the receiver diode just behind and to the left of the forward skid leg.
I remember at certain angles would suffer signal blind spot.




Burgess
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crashit
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PostPosted: Wed Mar 09, 2016 12:07 am
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Hi guys

Thanks for the feedback and pic

Well, I've got it back.
The problem was the throttle on the remote, which was fixed under the guarantee.
Now apart from going up, it also comes back down.
The guy told me to use alkaline batteries instead of rechargeable in the control. I think it was just because he wanted to sell me some. To be honest I haven't had any probs with the rechargeable ones.

Hey Burgess, is your pic of an infra-red receiver? I ask because my helicopter has a wire antenna.

Cheers
Crashit
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Burgess
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PostPosted: Wed Mar 09, 2016 6:57 am
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Good to learn the problem has been resolved.

When I did a search for "Toylab Cyclone Aluminium helicopter - 3 channel" http://www.toylabrc.com/products/CYCLONE_3,5
which has IR rather than RF consequently assumed that's what you have.
So yes as I mentioned in that post, that little V-Max is IR.

Regarding batteries, alkaline cells are 1.5v, where as rechargeable cells are 1.2v, so you will have more power in the transmitter, the final voltage depending on transmitter cell count.

If you do experience any problems again try good quality alkaline cells.

Burgess
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crashit
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PostPosted: Wed Mar 09, 2016 3:17 pm
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Ok
Thanks Burgess

The guy in the shop told me that alkaline can last for ten months, but good ones are pricey. My choice of battery is for ecological reasons more than anything else.

Crashit
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CarlosJones
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PostPosted: Sat Aug 13, 2016 10:02 pm
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Hi...as per my experience the problem could be the track in the variable resister throttle pot on the transmitter, or the electronic speed controller in the receiver.If your LMS have those helis, they may be able to check the response of your heli to another transmitter.

pcb prototype and assembly


Last edited by CarlosJones on Wed Sep 21, 2016 1:06 am; edited 1 time in total
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tombo242
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PostPosted: Sun Aug 14, 2016 3:15 am
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Carlos,

Why are you quoting almost word for word Burgess' response of Sat Feb 27, 2016 8:12 pm?

It would be good to acknowledge Burgess for his post or add something original of your own. On this forum we do not copy other posts without a reference to the originator.

Tom.
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