ricardinho

i hopr you can answer this question. i have a 35%er i am using the mpi matched miricle switches on the reciever and one on the engine. i am using li ions 2 cell 2400s. when i go to charge does the built in regulator effect the charge to the battery at all. i can charge right through the charge jack on the switch right. i havent heard nothing but good things about these switches. the guys from tbm who are giant scale specialist said these are the ones to use on 100cc planes and below. if you can answer these questions would be appreciated..

sweetpea01

My Feedback: (10)

Wow this thread is old....

I have no experience with the MPI switches. I use HD JR or HD Electro Dynamic switches only.

Here is a photo of my MPI regulators on their 3rd year and 4th plane (I've rotated through various airframes that I have under repair or have lost due to reasons other than electrical, like dumb-thumb).


On another note, I've found the Smart-fly super reg and turbo reg to be quite nice and cost effective. I am switching over to these in my future planes that require regulators


35% Su-26.

altavillan

My Feedback: (1)

If I were buying the parts for a new plane right now I'd be looking for parts compatible with the new a123 cells. I would not buy mated switches/regs as they will not be needed soon.

I would be looking for seperate Switch, charge jack/switch mount and reg.

Switch.... choose slider or pin and flag. Hobyco, JR, Futaba, Smart fly. MPI etc.
Charge jack/switch mount..... Dubro type or what ever looks good on the planes side. The big square boxes don't impress me.
Reg...... MPi HD with the large heat sink.

This way if you go a123 you can toss the reg and not have to change anything else.

ACMichael_G

I have been very impressed by all of the information on this forum. I recently owned a quarter scale plane using a Castle Creations 10A regulator. After performing a flat spin I came out of the maneuver just fine but then a few seconds later I lost the plane when my ailerons and elevators quit in flight. I know I was using full elevator, ailerons and rudder for this maneuver so I may have maxed out the amps.

Try landing a plane with throttle and rudder only, or just take my word for it that it does not work.

I am guessing that with most of the quarter scale planes out there the setup is something approximating 5 digital servos and 1 analog on throttle so we all need at least 12 amps which is what FamousDave appeared to be suggesting when he commented on the max number of servos per a given setup.

For a lot less money and more amps than the 12A specified by the PowerBox 12 and the PowerBox Sensor I was wondering what all of you might think about using a Castle Creations BEC Pro which can put out 20Amps? I think they cost $50. As was suggested earlier, using multiple regulators can be problematic when one does all the work so this would keep the regulators down to 1.

In the case of the powerbox sensor, if one fails you are down to 5A which won't get you very far.

The powerbox 12 website says it can only use NiCad or NiMH but I am hoping to use two, 2S lipos in the future.
Please correct me if I have read the data on their site incorrectly.

I did not add any foam insulation to my last regulator and I would be concerned to just start covering things in foam due to the chance of overheating. Can a few of you post pics of your setups so the rest of us can learn from your experience? I personally cannot afford to bomb another plane!

anyone want to make me a believer in regulators again?

Michael

ACMichael_G

I asked Futaba about using A123 on my 7ch receiver and they said anything putting out over 6V into the receiver will void the warranty!