geeter

My Feedback: (110)

i have a tower hobbies sailplane,stock motor and esc. 550 motor and brushed esc. i use a 7.4 2 cell lipo for power. it works ok and lightens the plane up some 12 oz. what brushless motor would work good with the 7.4 ? i will use a good 35-40 amp brushless esc too. would a 480 do it say 1200 kv ? i would like to retain the 8x4. folding prop also....thanks........RON

da Rock

What glider?

You can usually match up a motor to the weight of the plane. Your ESC is going to be another parameter that narrows down the motor choice. Truth is, that large an ESC probably won't do much limiting if the glider is the usual 2m or thereabouts.

da Rock

The most practical step for you right off is to simply look at how much space you have to fill with motor.

There could be a problem if your original 550 was shoehorned in and you don't have at least 1.25" or so for the retrofit motor. A lot of 28mm diameter outrunners are going to have enough power to work for you and need less than 40A constant ESC.

What's your space look like?

geeter

My Feedback: (110)

my space is 1 1/2 " wide thats plenty for a 28 mm inrunner. the inrunners are usually high kv rated. i would need about 1500 kv. i don't know of any inrunners that run that slow. outrunner could be adapted though. another thought is to keep the bushed esc and go with a ferrite motor. there ionly 16.00 from tower. they have more power and rpm than a 550. turning 11,800 on a 2 cell li-po and an 8x4 prop...thanks....RON

evan-RCU

The stock system is pretty much ho humm on a 2S but works really nice on 3S. Do beware the stock prop as 3S power is it's limit. I put a Turnigy brushless on mine with a nice 10x6 folder but that motor is no longer offered...

Something like this-

http://www.hobbyking.com/hobbyking/s...dProduct=14342

da Rock

Inrunners really aren't the choice of many.

The ferrite might be a step along the way. There is a real good reason we use brushless nowadays.

28mm would fit into 38mm easily. Outrunners' wires need just a bit of room for routing and the square interiors you usually find can easily accomodate those wires with no problems.

geeter

My Feedback: (110)

i had it running on a three cell 2200. i lost my styker in the back field where i fly. don't have the three cell anymore unless i find the plane. i limited the throttle adj to 80% on the 3-s but she did climb better. i didn't want to burn out the esc or motor. it can take about 12 volts and thats it. anyway i guess i should go brushless. i love my stryker, we clocked it at 81 mph last week. i just picked up the sailplane as something to mess with. cheap. i don't normally like anything slow at all. on a good brushless it would do fine with a three cell..............RON

evan-RCU

I ran mine, the brushed motor and ESC on a 3S LiPo for over a year flying it every weekend without problem... You're going to replace it so what if you burn it up anyway...

geeter

My Feedback: (110)

yeah i don't care if i burn it up. gee, i can't believe it lasted that long. the motor will turn 13,000 or more on a three cell. thanks for the input..............RON

geeter

My Feedback: (110)

i did burn it up after 8 flights. heat was the enemy. to much heat from a 3-s causes the plastic little fan fins to melt........then it stops shortly after. bought a new orion 27 turn 550..running it on 2-s 7.4 lipo. runs good....climbs lazey but what the heck................

evan-RCU

Plastic fan fins? Exactly what motor and glider do you have?

geeter

My Feedback: (110)

tower hobbies sailplane as said in the heading. stock 550 brushed motor they have plastic fan fins inside that melt at 250 degrees or so. flying on the correct voltage woud be a 7 cell nimh about 8.4 volts. i'm using a 3-s 2100 mah li-po. 11.1 volts..........too much. i would never buy a nimh or ni-cad for it. they weigh 12 oz. the 2 cell i run now weighs 4oz. it just doesn't have much climb power, but thats ok until i put a brushless setup in it later. then i can use my 3-s without any trouble and it will climb good...................RON

evan-RCU

tower hobbies sailplane doesn't tell me much. I assume its a Vista EP like the couple I've had. It has a 550 originally. I just went and pulled it out of the box it's been in for a few years.. I never notices the fan in it. If you want another I have one with the ESC and switch i'd send for shipping costs and a few dollars for gas to go to the post office. Or I could drop it off the next time I go through your area but that's probably not soon.

http://www3.towerhobbies.com/cgi-bin...&I=LXMUY1&P=ML

geeter

My Feedback: (110)

there are little fins inside the motor that move air around. the spinner that comes with it is a folding prop, it blocks the air from going in front of the motor. take it off and put on a reg, apc 8x6 prop it works better. i also have a brushed helion motor which is a 550 but better than stock. the glider flies good now on 2-s 2100 25 c lipo. it can loop inside or outside and is 10 oz lighter than stock........RON

bluzjamer

Have been flying my Vista with brushwed stock motor on 3s 1800 and 2200 mah for over a year. I try not to go full bore and if I do it is not for mre than 20-30 seconds. No problems so far. Nice flying, relaxiing plane.