RC Copter- fixed!

**sacc51** · 15th April 2015, 08:21 PM

Using a bit of logic I reasoned that if the spinning could be reversed by sliding the trim control then the spinning couldn’t be caused by anything in the prop drive trains, the problem therefore must be with the electronic components. So I fished the copter out of the bin took it apart and removed the circuit board. Using a loupe I couldn’t see any obvious problems with componentary, but without the appropriate testing equipment, and of course the knowledge to do some logical fault finding I opted to replace the circuit board. Luckily I happened to have a spare so I soldered the three motors in and an extra battery then stuck it back together; wahl ah – success, no more spinning. The second battery is located by means of an elastic band, I removed the balance weight in the nose and balancing is now achieved by sliding the battery forward and aft, hopefully it should give me longer flying times. Soldering that circuit board was tricky though, so dang small I spent the entire time peering through a loupe. Flys beautifully now, now to attack the walls and ceilings again.

The culprit:

**Cliff Rogers** · 15th April 2015, 10:20 PM

Do you have a pic of the other side of the PCB?

I have had some with dry joints 'cos it had be hit with a grinder to remove the tips of the wires after soldering.

All I had to do was retouch several solder joints to fix it.

**sacc51** · 16th April 2015, 12:12 AM

Ok, I'll rummage through the bin and see if I can find it. Curious thing with the batterie though: with one battery it will fly with good lift for about 5-6 minutes, the last 30 - 60 seconds it will only lift a few inches off the ground. With two batteries it will fly for around 10 - 12 minutes, but as before good lift for only around 5 - 6 minutes, the remaining 5 - 6 minutes it will only lift a few inches.

**sossity** · 17th April 2015, 12:45 PM

Originally Posted by sacc51

Ok, I'll rummage through the bin and see if I can find it. Curious thing with the batterie though: with one battery it will fly with good lift for about 5-6 minutes, the last 30 - 60 seconds it will only lift a few inches off the ground. With two batteries it will fly for around 10 - 12 minutes, but as before good lift for only around 5 - 6 minutes, the remaining 5 - 6 minutes it will only lift a few inches.

I think this is because of the extra weight of the second battery. It will take more power to keep the thing in the air with two batteries. You are not really comparing apples with apples unless you add the second battery and first leave it disconnected, then connected, to do your time comparisons.

Thread: RC Copter- fixed!

Thread Tools

Search Thread

RC Copter- fixed!

Curious

Similar Threads

RC toilet bowl copter repair

Can it be fixed.

All fixed up and no where to go

Can it be fixed?

It's Fixed

Tags for this Thread

Posting Permissions