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Lite Machines › Master 40-3p good for LiPo ? and Is Astroflight too hot ????
06-01-2004 07:17 PM  13 years agoPost 1
ido

rrNovice

Tel Aviv-Israel

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want to add Hacker c40-12t motor and Master 40-3p controller to my new Corona.
Does anybody know if this controller (BEC) can handle LiPo batteries ?

and.. I read a bad review about AstroFlight 020 for the Corona.
this guy said the motor was getting very very hot.
Do you recommend the AstroFlight 020 for the Corona ??

thanks

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06-02-2004 04:03 PM  13 years agoPost 2
MOZZER

rrApprentice

St. Peters Missouri

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Hello Ido, I also have the Hacker motor & ESC your interested in. It's the only motor I've had since entering this hobby, so I have nothing to compare it too, but I love the Hacker set-up. I use only 7-cell battery packs from Battlepack.com, and it's extremely powerful. It moves around like a fly, very quick. One thing you might want to consider is the installation of a fan above the motor. I've seen pictures of heli's on this site of a pc fan mounted with CA on top of the motor. These motors are around $5.00. But, since my Hacker was running as hot as 160 degrees after one battery pack while hovering, I went to radio shack to check out the pc fans. What I ended up buying was a minurature brushless fan for around $12.00. This fan is slim and has a hole on each of the four corners of the housing which I used to mount 1/8 dowl rods. I have the fan about a quarter inch or so above the motor, and the dowl rods CA glued to the base of the crutch, surrounding the motor sort of cage like. It works well enough to fly a couple of packs now (I still allow the heli to sit a few minutes between packs and leave the fan running too). Good luck, Steve.

Oh yea, if you do decide to go with the Hacker brushless, the cheapest place to get it that I'm aware of is Roffee TV & Hobby for I believe around $260.00 for motor and ESC. Other places charge up to $300.00.

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06-02-2004 06:01 PM  13 years agoPost 3
ido

rrNovice

Tel Aviv-Israel

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thanks ! Roffee TV & Hobby is the place I am going to buy all that stuff.

How do you connect tha fan (to what battery) ?

Ido

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06-02-2004 08:17 PM  13 years agoPost 4
luc

rrNovice

France

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If you need a 40A brushless esc of quality, I have a 40-6-18 kontronik on sale now on ebay
http://cgi.ebay.com/ws/eBayISAPI.dl...item=5901776436

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06-03-2004 06:23 PM  13 years agoPost 5
MOZZER

rrApprentice

St. Peters Missouri

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Hi Ido, I bought a small universal conector that plugs into the reciever from a local hobby shop for $2.50. It has only about three inches of wire to solder to the fan wire, but the fan wire has too much wire, which you'll want to cut off some of the excess probably. So, solder the two fan wires to the two connector wires, use heatshrink, and just plug it into the reciever (if you have a channel to spare, otherwise, I'm not sure what you should do).
I've done this myself only recently. Therefore, I'm just learning the benefits of using the fan. What I've observed so far is this; When it is hot outside, without the fan the motor has run up to 161 degrees. With the fan it still runs up to 140 degrees, but it cools off at a much faster pace if you leave the fan running when the battery is too dead to fly the heli. Basically, I leave the heli on (which means the fan keeps running) and drink a soda for a few minutes before turning off the power and unhooking the used battery and hooking up the next pack for flight. If you hold a temp gun to the motor, you will see the temperature drop fairly quickly. But, last night, I flew the heli when it wasn't hot outside and the temperature after one battery pack was only 115 degrees, which is great. So, here by St. Louis, it's very humid in the summer and it appears that the effectiveness of the fan rely's on the environment at the time of flight. I think your making a good choice with Hacker brushless, later, Steve.

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