Desperately need help on my well r4

I

ikarma70

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Hi all, I have just done a lipo conversion on my well r4 and it's not gone to plan!

I hooked the battery up and it just started firing in safety mode and when I pull the trigger in any fire mode it slows down, have I screwed it up permanently or is it a simple fix?

Please help!!!!!!

Thanks

Andy

 
Pictures? Did you open up the gearbox?

 
No just cut standard battery connections and routed outside to deans plugs to a lipo battery in a peq box

 
Have you checked the battery, almost sounds like its gone flat or has given up. What battery were you using before and what LIPO are you using now?

 
It's a 7.4v 2200mah, will try putting the old internal connectors on to see if that's it.

God knows why I started this as this is my cqb gun!!!

 
I saw a spark when connecting the battery so it looks like there's a short somewhere, may have to pull the gearbox/trigger unit out.

 
Idk but have you checked the fuse? If it doesn't fire that could be were your short is. Then again idk

 
Oh it fires full auto even on safe so I suspect crap may have entered the trigger

 
Try later on when I'm home but I hope nimh 8.4v speeds things up a bit!

 
Well, you should try using nimh because if you short circuit a lipo, it can go up in flames or even explode. The nimh just dies.

I'm trying not to be rude here, but it seems you don't really have the understanding or the tools to get this done.

You should get a multimeter and measure resistances.

 
I do have a new digital multimeter.

I did my KA tommy gun and Cyma m14 fine.

 
Cool. Then measure resistance between the battery connector's ends, and the contact points of the gearbox, and even the body of the gearbox. Both with trigger pulled and released. This way you can find where the unneeded contact is.

 
It sound more like you have a short circuit on the connections to the Lipo, so that as soon as you connect the battery you are by-passing the trigger contacts altogether and engaging the motor. That would be why pulling the trigger slows down the motor, as the current is trying to follow two separate paths. Go back and look at where the wires to the Lipo are connecting to the original wires to the supplied NihM connection, as you will probably find one of them isn't covered properly and is touching something metal that touches the gearbox. If you add any new wires, always make sure you properly insulate the connections.

 
I'm pulling the gearbox later as I reckon something is in the trigger/fire selector area causing the short, if not I'll get the multimeter on it.

 
RR01 said:
It sound more like you have a short circuit on the connections to the Lipo, so that as soon as you connect the battery you are by-passing the trigger contacts altogether and engaging the motor. That would be why pulling the trigger slows down the motor, as the current is trying to follow two separate paths. Go back and look at where the wires to the Lipo are connecting to the original wires to the supplied NihM connection, as you will probably find one of them isn't covered properly and is touching something metal that touches the gearbox. If you add any new wires, always make sure you properly insulate the connections.
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I did wrap all soldered joins in insulation tape, however I will try again later using an nimh battery.

 
Well this is a head scratcher...... I took the extending wires off and held the ends onto a nimh battery and it's still firing in safe so it can only be something on the gearbox/ fire selector/trigger.

 
Update, I had the gun in bits and cleaned any debris out but it's still sparking and firing in safety, I think I will let the FAO tech look at it and buy another as I really do like these guns and leave it alone!

 
2nd update ..... Put gun back to standard and the bloody thing is working fine again.... Leaving it alone and be happy with it!

 
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