Throttle cuts off with vibration

Question: I sync up fine, when the model is throttled up or is shaken, the battery seems to lose it’s connection, Throttle cuts out, and the receiver starts up again, I can hear the tones - what’s happening?

Answer This is caused by a high resistance connection between the battery and the receiver. This resistance is limiting the amount of power the receiver can use. Two things can cause resistance, dirty magnets, or small area of contact.

(1) Dirty Contacts, this can come from many sources, but they all cause the same problem and can all be fixed the same way:

• Finger print oils from touching the battery
• Ferric Dust, if your battery hit the ground.
• Glue splatter and fumes.

The best way I have found to clean these bahoma connectors is with a scrap piece of carbon fiber rod. I use 0.8mm rod and just score it using a hobby knife and then snap it. This leaves a coarse abrasive end on the rod that works well for getting inside the plastic guard.

Don't press too hard or you will flatten out the end of your rod before you get any polishing done. Just very light pressure swirl it around. If you find that it is becoming less effective, just trim the end off and continue with a fresh end.

In this photo you can see a LP20, the magnet on the left looks pretty clean, A nice gold/brassy color, not bad - But it can be a lot better! Look at the one on the right, its so shiny and reflective that it's hard to get a good picture of it. Its a mirror like finish. This is what you should try and achieve. Keep your contacts nice and clean like this and you will have lots of calm flying without your motor cutting out on you.

(2) Bahoma Alignment. You need to make sure that the body of the battery is not resting on the receiver, if it is then your magnets may not be meeting flush and only two small points are touching. This is a high resistance connection. This is what causes receivers to restart just after takeoff. The power requirements of the motor increase and starve the receiver of power - Combine this with the vibration of the motor and then it reboots due to low power.



It's pretty easy to adjust, you just need to bend the Bahoma interface so that it is closer to the receiver when connected. See the illustrated in the diagram to the right, 3rd one down. This shows that the body of the battery can not touch the receiver.

The image below shows how you can adjust the bahoma interface