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Post by Gabe on Sept 25, 2010 7:10:11 GMT -6
Whoah! OK, maybe there isn't a need to prop up  |
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19000rpm
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Post by 19000rpm on Sept 25, 2010 7:43:06 GMT -6
Yep, all that wing area produces tons of lift "right now"!
With the stock wing and a 480 you need about 10 + degrees of mechanical down elevator to keep it from gaining altitude at over 1/2 throttle.
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Post by r/c basher on Sept 25, 2010 10:45:17 GMT -6
...Thanks for the link Sol to that volt/amp meter its really cheap but about 50% of the reviews say it doesnt work at all or that the readings are way off... Ooops, sorry basher. I got mine two years ago (works fine) and haven't bothered to read the reviews on it lately. Guess I should have done that before posting. ;D Thats ok Sol, I always check reviews of everything I buy anyway. Ill experiment with props to see which one I like best. 3 to 5 ft.  is really impressive, I thought the stock super cub 15 ft. was good. Im starting to get excited about this, how fast do you think will it go with a 9.5x7.5 prop? 10+ degrees of down elevator, dang, Ill probably end up clipping the wings some. Right now I think I could go full seperates and 2.4ghz, I have the tx, rx, a 20 amp brushed esc leftover from my g2, and 2 esky servos and I could use the brushed motor. The only problem is I dont know how to mount the servos to where they will be easily removable. I wouldnt be gaining anything except that I could use my Dx6i. I got an email today from Hobbyking saying the hxt900 servos are instock again, but when I went to there website they were backordered again. They must not of ordered enough and filled all the backorders and then ran out again. |
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19000rpm
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Post by 19000rpm on Sept 26, 2010 7:08:57 GMT -6
The thick wing isn't built for speed. You're fighting the lift above 1/2 throttle, but I'd say maybe 40-50 with the full wing. You can expect to pick up 5-10 mph if you clip the wing. Full throttle and full elevator and it really doesn't roll out it jumps up. My first mod to the SC used the brushed motor and guess what? A G-2 ESC. Works fine. The best way I found to mount the servos is with silicone. When you want to remove them, you can easily cut them out and the silicone will peel off the servo. Too bad about the hxt servos. Same thing happened to me. I think hobbypartz has some towerpro metal gear servos in stock that are pretty cheap. www.hobbypartz.com/servo-mg90s.html |
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Post by r/c basher on Sept 27, 2010 14:36:14 GMT -6
The thick wing isn't built for speed. You're fighting the lift above 1/2 throttle, but I'd say maybe 40-50 with the full wing. You can expect to pick up 5-10 mph if you clip the wing. Full throttle and full elevator and it really doesn't roll out it jumps up. My first mod to the SC used the brushed motor and guess what? A G-2 ESC. Works fine. The best way I found to mount the servos is with silicone. When you want to remove them, you can easily cut them out and the silicone will peel off the servo. Too bad about the hxt servos. Same thing happened to me. I think hobbypartz has some towerpro metal gear servos in stock that are pretty cheap. www.hobbypartz.com/servo-mg90s.htmlThat makes sense about the wing, its made to be a trainer and provide as much lift as possible. My brushless esc should be coming tomorrow or today if Im lucky. 50 mph Id be happy with, atleast for a while. |
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Post by r/c basher on Sept 29, 2010 14:32:40 GMT -6
I received the brushless motor yesterday and also a Thunder ac6 charger. While looking at the alpha 480 motor I noticed how small and fragile looking the wires are, it wouldnt take much for one to break or come unsoldered, that I dont like at all, but like they say you get what you pay for I guess. When I tested it out, it seems to run backwards a hair then go forward and run like normal, I switched two wires to make it run the opposite direction and it still did the same thing. Do you think this would be a problem? Now I have to decide on how I should mount it, time to do a little research.
The Thunder ac6 charger is pretty cool I charged a couple of batteries with it. The manual that it came with kind of surprised I was expecting a manual that was written in chinglish that was useless, like other people have said. But instead I got a manual that was actually decent that you could understand. There a few mispeled words but nothing to bad. Now I have to buy me or solder together a deans adapter for it.
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Post by Gabe on Sept 29, 2010 15:11:44 GMT -6
Hmmmm...sounds like a cold solder on the bullets. Does it pop or sputter any other time after you spool it up?
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Post by r/c basher on Sept 29, 2010 16:18:34 GMT -6
Hmmmm...sounds like a cold solder on the bullets. Does it pop or sputter any other time after you spool it up? No it doesnt pop or sputter at all after I spool it up. After I start to run it, it runs fine until it stops spinning and I throttle up again it does the same thing. Ill play around with it some more before I do a maiden, I still have to buy a prop anyway. It could be just me. I start it up and I feel the rpms change, like it changed direction. After I start it, it runs normal. Ive tried starting it really slowly but I cant start it slow enough inorder to tell for sure. |
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Post by Gabe on Sept 29, 2010 20:50:26 GMT -6
I would also double check the settings on your ESC. Be sure they match up with the requirements of the motor. Check the timing, start type (slow, normal, hard, etc.), and the switching frequency if there's an option to set it.
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19000rpm
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Post by 19000rpm on Sept 30, 2010 6:38:03 GMT -6
I hate it when they use those type of wires.  I'd guess the timing on the ESC isn't right for the motor. Try reprogramming it. |
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akent
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Post by akent on Sept 30, 2010 9:27:16 GMT -6
Yep. Timing.
The Turnigy ESC's come set to low timing (usually 0 degrees).
Almost all of the outrunners you will get need mid timing (15 degrees). I have one that ran best on high timing (20+ degrees).
Once it's right, you should notice that the motor not only produces more power, but it will run cooler too.
Kent
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Post by r/c basher on Sept 30, 2010 13:53:11 GMT -6
Thanks guys. I bet it is the timing, its the esc that I was using in my g2 and I didnt change any of the settings from using the g2 motor. I dont like the wires at all on this motor, my other alpha motor for my g2 wires were ok. But these arent good the wire is smaller than the actual rubber tubing. It wouldnt take too much for it to break, atleast its in my super cub if the motor does go I have a chance of saving the SC from a crash.
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Post by Gabe on Sept 30, 2010 15:53:17 GMT -6
You could always snip the wires close to the base and solder on some thicker ones for that "comfort" factor.
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Post by r/c basher on Oct 6, 2010 17:48:56 GMT -6
Update
I got all the stock electronics out of the Super Cub. I think Ive found a good way to mount the brushless motor. Im thinking about cutting a section of foam out where the motor wires enter inside and put the esc there so there will be some air flow through it. Im thinking about buying some hxt900 servos tonight since there instock at HK, again.
What type of prop should I use, there is several different types, sport, slow fly, thin electric, pylon? What do you guys use on your super cubs? Thanks.
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19000rpm
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Post by 19000rpm on Oct 7, 2010 6:32:27 GMT -6
I used the PKZ 9.5x7.5 prop for the Trojan/Corsair. An APC or MAS 10X7 or 10X8 are also going to work well.
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is really impressive, I thought the stock super cub 15 ft. was good. 
