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Post by wire10 on Apr 11, 2009 10:23:56 GMT -5
I'm thinking of upgrading my EZ glider to a brushless motor. Does anyone know the best place to get a kit & what is included. Has anyone done this upgrade and were there any tricks or problems? I've searched the web but no luck except for a company in England. I wrote multiplex and I am waiting for an answer. There was no kit info on their web site. Any help would be appreciated. Thxs
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Post by rob1978 on Apr 14, 2009 17:40:47 GMT -5
i bought mine from tower with the brushless upgrade... i think it was a permax and the package came with everything i needed except the battery.. not sure if they still sell them though.. -rob
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Post by wire10 on Apr 15, 2009 7:28:53 GMT -5
Thxs Rob. I found it at Tower- Order# M993207!
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Post by Dave Seay on Apr 15, 2009 12:20:36 GMT -5
Ok, I'm going to jump in here in the hopes that I prevent a possible disaster, either now or in the future. Rob, how may servos are you running? Probably 4 if memory serves. I think you will find that your ESC (and , in fact, most ESC's) are rated for 3 servos. Since you don't tend to use much rudder in a sailplane, the draw will probably not overload the BEC or your ESC and you should be fine. Lets hope so. However, I bring this up for future reference. If you ever fly a full-house electric, do not power the RX from your ESC/BEC. Get an alternate power supply for your RX, either an battery pack or a UBEC/SBEC/etc/etc (which is what I use). When you do this, you also pull the center pin on the cable from the ESC to your RX so you still have speed control put power is not being drawn by the RX from the controller. I had a full house with the RX powered from the controller and it was fine until I got caught in a hat sucker of a thermal. I put on both flaps full and the next thing I knew, my plane was imitating a lawn dart. It was very ugly. What had happened was that I overloaded the controller (the motor was not running) and it stopped supplying power. Shortly after this, the first UBEC showed up on the market and, in fact, I was part of the early testing. I have them in ALL my E-planes even if they are only 3 channel. I don't want to ever depend on the ESC/BEC functioning correctly. If it fails for whatever reason, I want to know I can fly the plane home safely. Dave
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Post by Dave Seay on Apr 15, 2009 12:34:03 GMT -5
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Post by wire10 on Apr 15, 2009 19:34:56 GMT -5
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Post by rob1978 on Apr 15, 2009 23:53:49 GMT -5
there ya go! not the same motor i have in mine.. but i'm sure it's comparable!
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Post by Dave Seay on Apr 16, 2009 6:50:29 GMT -5
I could run a numeric comparison but there is not enough info. Specifically, from each of you, I need to know...
1. What is the ratio of your gearbox (if any)? 2. What prop size? 3. What is the size of the LIPO cells you are running?
Dave
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Post by wire10 on Apr 16, 2009 9:36:08 GMT -5
8 x 11 prop-Prop size I do not have the gear box ratio- I'll call & see if I can get it ;D 2 cell lipos 2100mAh 7.4 V
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Post by rob1978 on Apr 16, 2009 10:07:56 GMT -5
lol.. i forget for the most part.. i know i had to change the pinion from the stock configeration.. i think i'm running an 8x11 prop too.. but i'm not sure but i know i'm running 2200mAh 3 cell lipo packs! =)
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