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500 Class Electric Helicopters 500 Class Electric Helicopters manufactured by Align, Tarot, SYMA, Airhog, Chaos, HK and similar. |
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01-24-2013, 05:51 PM | #21 (permalink) |
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Your set up...
4S ( 14.8v) x 1500kv =22200rpms... Main gear ( 162T) ÷ 13T = 12.46 gear ratio 22200 ÷ 12.46 = 1781 RPM's @ 100%
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Trex700N2E Trex500ESPTT(PRO head and Tail ) Trex500ESP (Belted) HC500SE ....GO TEAM FLYBAR! |
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01-24-2013, 05:53 PM | #22 (permalink) |
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so how would i program the esc??
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01-24-2013, 05:54 PM | #23 (permalink) |
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Let me rephrase....programming... which ESC do you have?
As for soft start.. I dont know which ESC you have or if its capable of soft start..
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Trex700N2E Trex500ESPTT(PRO head and Tail ) Trex500ESP (Belted) HC500SE ....GO TEAM FLYBAR! |
01-24-2013, 05:57 PM | #24 (permalink) |
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here is the esc that i have http://www.hobbypartz.com/60p-70mm-edf-combo.html
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01-24-2013, 06:01 PM | #25 (permalink) |
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not sure what I'm looking at there Chris..the ESC listed in this combo says no bec???? Did you buy a ducted fan combo? or just this ESC?
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Trex700N2E Trex500ESPTT(PRO head and Tail ) Trex500ESP (Belted) HC500SE ....GO TEAM FLYBAR! |
01-24-2013, 06:04 PM | #26 (permalink) |
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it does come with a BEC a lot of there stuff has wrong specs, and the reason i got it was for a EDF that crashed over the summer, so have a spare esc.
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01-24-2013, 06:08 PM | #27 (permalink) |
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how would i re program a normal one?
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01-24-2013, 06:10 PM | #28 (permalink) |
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OK.. I dont know that ESC and not sure of its programming capabilities...or its specs....You need to be careful of the BEC output.. ( 3A, 5A )
If the BEC is switching or linear.. Well, I dont know if the ESC has any options like soft start...its nice to have, but not absolutely necessary.... Just be careful starting up in normal flight mode, you will have a steep curve from 0 to 100, so it will spool up really fast once you leave zero on the throttle.. take it slow to mid stick.....
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Trex700N2E Trex500ESPTT(PRO head and Tail ) Trex500ESP (Belted) HC500SE ....GO TEAM FLYBAR! |
01-24-2013, 06:12 PM | #30 (permalink) |
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Most ESC's come with instructions for programming. Depending on the brand, it can be done with the Tx on the sticks.. ( beeps, move the stick, beep to set and so on..) or many can be programmed on the computer. Like Castle ESC's, Hobbywing, and the like.
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Trex700N2E Trex500ESPTT(PRO head and Tail ) Trex500ESP (Belted) HC500SE ....GO TEAM FLYBAR! |
01-24-2013, 06:24 PM | #31 (permalink) |
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found out it is allready set at soft start
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01-24-2013, 06:35 PM | #32 (permalink) |
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Soft start can mean different things on different ESC's.. I have a pair of Turnigy 85A ESC's that work great, but their soft start isn very soft..its almost non existent. ( these are my spares..)
If you have it.. great.. it might help keep the initial spool up soft enough so you wont strip gears....to be safe.. just take it slow when you start to spool up....once you get to mid stick... it'll be at a speed that wont strip anything as it spools up higher.. just be careful... If you have a decent soft start.. you could run a TC of say...0, 80, 90, 100, 100.. but that will be a fast spool up from 0. The mian thing here is....you need more headspeed. A bigger battery wouild help alot here...but since thats in the future.. Try to keep your head speed up with the TC....especially at around mid stick and above. Realistically, you'd like to have the same head speed at all throttle points.. ( hence, a flat TC )
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Trex700N2E Trex500ESPTT(PRO head and Tail ) Trex500ESP (Belted) HC500SE ....GO TEAM FLYBAR! |
01-24-2013, 06:42 PM | #33 (permalink) |
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ok thanks, i will hopefully get a vid tomorrow thanks for the help!
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01-24-2013, 06:52 PM | #34 (permalink) |
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No problem.. sorry if I overwhelmed you...
Basically, your flying under powered.. but your flying... You need to get the head speed up when you can. Either by more battery, or for now, by flying at as high a TC you can on your set up.
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Trex700N2E Trex500ESPTT(PRO head and Tail ) Trex500ESP (Belted) HC500SE ....GO TEAM FLYBAR! |
01-24-2013, 06:55 PM | #35 (permalink) |
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post here tomorrow with the results!
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01-24-2013, 06:57 PM | #36 (permalink) |
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double post....
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Trex700N2E Trex500ESPTT(PRO head and Tail ) Trex500ESP (Belted) HC500SE ....GO TEAM FLYBAR! |
01-24-2013, 10:14 PM | #38 (permalink) |
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Join Date: Mar 2010
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For what its worth...here's my HK500GT at a job site about a year ago. Note the whine of the motor at high rpm (1600Kv) with a 13T pinion running 6s. This is very close to a "stock" setup. Throttle curve is 70% flat, no governer. The wind was around 8mph.
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01-25-2013, 10:00 AM | #39 (permalink) | |
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Join Date: Sep 2008
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