Micro and Mini servos what to use
 

I just purchased the WM P51 Ep model and they say that it takes Micro servos. The micro servos I have are the Futaba S3101 Micro Presision. These seem to be to big. The Hitec Sub Micro servo HS55 Fits into the mounting holes in the plane. Should I open up the mounting holes so they can take the Futaba servos or are they to big to use.
Also can I use a Li-po pack instead of the recomended 7 or 8cell 1000mah Nicad battery. If so would a 2 or 3 cell 1500mah li-po battery work with the stock 400 motor and a 20 amp brushed speed controller.

Any suggestions on a Brushless motor that would replace the stock 400 and go right into the model

RE: Micro and Mini servos what to use
 

The plane would be better off with the HS-55's. It is already setup for that size, and they are lighter. If you do not have them, or don't want to spend extra money, you can use the 3101's. I used them when the plane called for micro such as the HS-55's. They are just a little heavier. But then you have to deal with enlarging the holes in the plane and worry about cutting things. Easier just to get the servos that it is designed for.

Yes you could use a LiPo, as long as that ESC has a programable or LiPo low voltage autocutoff, which the stock one probably does not. You could only use a 2S 7.4 volt LiPo with the stock motor. A 3S 11.1 volt LiPo will turn that stock motor into a smokeshow in about 15 seconds.

My suggestion would be to just go brushless. Don't waste your money on another brushed 400 motor. You can get an outrunner that will require little work to get it to mount. You will also need a brushless ESC, which are more geared for LiPo's. All around just a better, more powerful setup.

RE: Micro and Mini servos what to use
 

Will the heavier weight of the Futaba 3101's make a diference in the overall flying ability of the plane or is it such a small amount of weight difference. Will they fit into the wing. I do have one HS55 along with the 3 Futaba 3101's. If I buy I more HS3101 and put the HS55's into the wings (if the 3101's don't fit)and cut the servo holes in the fuse bigger and use two 3101's there would that work.

So the if I get the 7.5 Li-po I'll be waisting my money cause when I upgrade to the outrunner motor I will need a 3 cell 11volt one.

What do I buy if I just want to get up in the air now - go with a Nicad or NIMH pack can I get a light 1500mah pack, what brand?

That way I can fly it for now and upgrade later. I'll just get the field charger that does both Lion and Nicad,NIMH that Maxx prod sells for $75

Would the Himax HB2815 Brushless 275 Watts on this webpage http://www.maxxprod.com/mpi/mpi-262.html fit into the plane with no problem
when I want to upgrade.

RE: Micro and Mini servos what to use
 

The weight difference is very minor. The 3101 actually have more torque than the HS-55's. Using the HS-55's for the ailerons, then the 3101's for the elevator and rudder, should be fine.

You will not be wasting your money necessarily. The 7.4 volt LiPo will work with the brushless setup, but the 11.1 volt LiPo provides a whole lot more power, and the plane will perform much better. It would be worth it to just go brushless and go straight tot he 11.1 volt LiPo.

If you just want to fly with the stock setup you could just get a NiMh. Here is what I use http://www.batteryspace.com/index.as...ROD&ProdID=850 You will get about a 7-10 minute flight time. You could get the 2S LiPo, and get a little longer flight time, because they are lighter than the NiMh's, and then you could get a higher mah rating, but it is a lot of $$ for a batery that might not do you a lot of good if you go to brushless. And at 7.4 volts, the 8.4 volt NiMh will actually give the motor more power.

That HiMax is an inrunner. I would recommend an outrunner so you don't have to get a gearbox, they are just easier, no gear stipping, less parts the better. Something like this:
http://www.e-fliterc.com/Products/De...rodID=EFLM1400

RE: Micro and Mini servos what to use
 

Can I use the 3101's for the Ailerons or are they to long. Thanks for these links these look like the right Ni-cads and Upgrade motor. About the NIMH batteries for $21 do you get two packs for $21 so you can charge one while flying with the other alternating them or do you just get 1 pack for $21. Or do you use both packs at the same time in the plane.

One thing I also heard is that the combination NIMH,NICAD Lithium battery chargers are no good. To just get seperate
Lithiam and NICAD,NIMH chargers for field charging. What have you seen on the field. Or are the combo chargers just 2 different chargers in one box.

Like the Multiplex Charger Li-NiCd-NiMH on this page http://www.maxxprod.com/mpi/mpi-9.html

RE: Micro and Mini servos what to use
 

You can pretty much use whatever servos for whatever. It is just a matter of which holes you want to make bigger. I typically put the heavier servos or the higher torque servos, if I have that type of a setup, on the rudder and elevator. It is all just a matter of opinion.

Those batteries from batteryspace.com are (2) two 1100mah 8.4 volts packs for $21. That is why I keep buying them, some places are $19.99 just for one. And these packs are great, good power throughout the entire flight.

There are a couple of combination chargers that seem to be ok. I like just having an entirely seperate, very nice charger for my LiPo's. They are the ones to really take care of. And the chargers that just do LiPo's are more geared towards their needs. The combo chargers have settings to switch from NiCd to NiMh to LiPo, it is all one charger. I just don't like having the possibility of human error get in the way and blow up a LiPo [:-] Yes, that Mulitplex is an example of the combo charger. I already had a NiMh charger from my RC truck days, so getting a seperate LiPo charger made sense for me.

You may want to look at these for combo's:
http://www2.towerhobbies.com/cgi-bin...?&I=LXMAH9&P=0
http://www2.towerhobbies.com/cgi-bin...?&I=LXMAJ0&P=0

This is what I got just for LiPo's: It was $109.99 when I got it, looks like price went up $10.
http://www2.towerhobbies.com/cgi-bin...?&I=LXFWW2&P=0

RE: Micro and Mini servos what to use
 

I'll pick up the two Nicad packs that's a really good deal.
Can you hook up the Triton 2 to a car battery to charge the packs or only a gell 12volt. Or charge the Gell with the car battery.
Also can you use a power supply if you want to do in house AC charging or will the charge not be accurate with a power supply than a 12 volt battery.
Or is the Triton made with a AC/DC version. Any other quality AC/DC Multi charger on the market.

RE: Micro and Mini servos what to use
 

It has banana plugs and alligator clips, designed for a power supply. That would probably be the best way to go. I use a power supply for all of my chargers. Here is what I got http://www2.towerhobbies.com/cgi-bin...?&I=LX3609&P=V

Just FYI, those packs are actually NiMh's, just want to make sure you know what you are getting.

RE: Micro and Mini servos what to use
 

I just got the Triton 2 and the two NIMH packs. can't wait to put the model together. I heard that to the car battery can be used by adding a cigarette lighter adapter plug. If I could have returned the E-flight Brushed ECD I bought with the plane for $40 I would have upgraded to the brushless motor and a Li-po pack right away. The Li-po pack at that battery place isn't much more expensive than the two NIMH packs are.
As far as the NIMH are they as good as Nicads or better. I heard that Nicads give a greater burst of power but Nimh hold more charge don't know if this is true.
Any good links for Brushless ECD's for the motor you suggested with a 11.1 volt 1500mah Li-po pack.

Have you heard of anyone taking a old power supply out of an older unwanted computer and modify it as a 12volt power supply. I was thinking about that as I have a couple of old computers in the garage.

RE: Micro and Mini servos what to use
 

The NiMh's are better than the NiCd's. I have not used a lot of NiCd's, I do believe they might have a little more punch at the very beginning, but they lose charge quicker and do not have as much pop throughout the entire charge/flight.


As for ESC's to go with the E-Flite Park 450 - http://www.e-fliterc.com/Products/De...rodID=EFLA1025 or http://www2.towerhobbies.com/cgi-bin...?&I=LXKSY4&P=0 Either would be fine. I have used the E-Flite stuff in one plane and the Great Planes stuff in the other. Both are good quality.

There have been several posts about people converting old PC power supplies into charger power supplies. Just do a search, or scroll back thru the power sources forum.

RE: Micro and Mini servos what to use
 

Thanks for the info . I am looking forward to upgrading it later.