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GrandRC . CanoMod . Futaba-RC

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e-Hirobo SRB Quark - Lepton - XRB Coaxial > Burn the XRB Lama
 
 
alexl
Heliman
Location: Hong Kong

Today is a bad day. I reversely connect the battery and the heli generated smoke and caught fire although switch was still off. The control board was completely destoryed. !!!!

I will have many spare part including blade, motors, servo,....so sad.
01-22-2005 Over year old.
 
 
Ace Dude
Elite Veteran
Location: USA

Isn't the battery connector keyed so it only goes on one way?
01-22-2005 Over year old.
 
 
rickyblaze
Senior Heliman
Location: Bloomington Indiana

The cables I made eliminate the possibility of cross circuit. Sorry it had to happen

Rick http://www.runryder.com/helicopter/t148270p1/
01-22-2005 Over year old.
HOMEPAGE  
 
 
alexl
Heliman
Location: Hong Kong

No. I made my connector.
01-22-2005 Over year old.
 
 
midwestpilot
Elite Veteran
Location: Crystal Lake, IL

a lesson we all learned from you...

sorry it happend to you dude....I will be very carefull of that if I make an extension. Bright side....we all know now that even switch off reverse polarity is a very bad thing

again sorry for your loss

In life there is no spacebar!

Rich Erikson AMA 6175
01-22-2005 Over year old.
HOMEPAGE  
 
 
alexl
Heliman
Location: Hong Kong

Any idea for me to recover the XRB LAMA.

1) Buy the control board. (but where can I buy it and how much?)
2) Buy another new one, then I will have many spare parts.
3) Buy 2 ESC, Gyro, Rx ..any suggestion?

I will suggest Hirobo to add protection circuit.
01-25-2005 Over year old.
 
 
rickyblaze
Senior Heliman
Location: Bloomington Indiana

Maybe if you could find one without the transmitter,then at least it would be cheaper and you'd have a spare. If you go the 2-esc and gyro that's another option,I did the conversion on a tethered version and it's pretty intense. I used a csm200 light for the gyro but it's not near as stable as the stock XRB SR. I would like to try the gy240 but I'd have to take it all apart to change it. Besides after getting the stock XRB SR I don't even fly the conversion anymore

Good Luck , Rick
01-25-2005 Over year old.
HOMEPAGE  
 
 
alexl
Heliman
Location: Hong Kong

So, I would buy a new one without TX.

Then, I will have many spare parts : 2 motors, 2 servo, 8 sets of blade, mainframe, cannopy, battery, charger,...

Any one need those, I sold u at reasonable price. haha.
01-25-2005 Over year old.
 
 
angelob
Veteran
Location: Harvard, IL

Quote 
I will suggest Hirobo to add protection circuit.



The protection circuit is the stock keyed connector. No offense, but you chose to bypass the protection circuit and got burned. Oh well - live and learn.

Angelo
01-25-2005 Over year old.
 
 
Helimex
Senior Heliman
Location: Oklahoma

Buy a new one, keep the old one for spare parts, leave the electronics alone.
01-27-2005 Over year old.
HOMEPAGE  
 
 
stealth916
Veteran
Location: Rocklin, CA

Sorry to hear of your XRB loss.

I agree that the circuit protection is the mechanical feature of the connector - in that it is keyed and cannot be hooked up backwards. If you replace your connectors, do not get connectors that are not keyed! I use Deans Ultra plugs, and unless you solder it wrong, you are never going to hook it up backwards.

This is 'failsafe' and adds no cost to the unit. Why reinvent the wheel with fancy electronic gadgetry that could itself fail? This circuit protection solution has been around since electricity itself, and will be for the forseeable future.

Everyone should realize that the Heli is live when the battery is connected, switch on or off. That little tiny switch has no hope of carrying the current needed for the heli to fly, and so is just activating a relay circuit - therefore the electronics must be active even if that switch is off. And leaving your battery connected will also deplete the pack, even if you just leave the heli sitting there switch off.

Always unplug the pack after flight.
01-28-2005 Over year old.
 
 
1 page1177 viewsPOST REPLY
A Main Hobbies . Boca Bearings . Modefo's RC Helicopters

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e-Hirobo SRB Quark - Lepton - XRB Coaxial > Burn the XRB Lama
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