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« on: September 17, 2014, 11:26:36 PM »
devangflyer
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Hi guys I have built a Rc car for less than ₹1500
The electronics are

Servo - JR 519 ( second hand )( got it for free from a Aeromodeller )
Battery - wolf pack 1000mah 7.4 v( 550)
Motor - no idea( got it along with the car body )
Esc - hobbyking 20 amp brushed esc( 700)
Body - cheap Chinese Rc car bought from China bazaar(250)

So the total cost is ₹1500

This car is supercool , it can also drift .
image.jpg
A Rc car for <₹1500
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« Reply #1 on: September 18, 2014, 02:44:09 AM »
rohan123
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nice work devang Clap Clap...i think i'll make one too Grin
regards
rohan
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« Reply #2 on: September 18, 2014, 02:47:55 AM »
devangflyer
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Thanks . All the best

The servo mechanism was a very hard puzzle , try to take inspiration from mine
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« Reply #3 on: September 18, 2014, 09:47:11 AM »
satyagupta
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Brushed ESC from hk? can we find one from India? Any LHS stocks it??
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« Reply #4 on: September 18, 2014, 10:00:24 AM »
satyagupta
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And are these ESC reversible too?
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« Reply #5 on: September 18, 2014, 10:22:37 AM »
Prashant_G
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 Clap Clap Clap superb
Nice jugaad  Grin
dont understand servo mechanism for stearing, want to see the video Drool
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« Reply #6 on: September 18, 2014, 12:48:22 PM »
devangflyer
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No sir esc is not reversible , I have bought this one from thehobbyshop (THS) they have shifted to Lucknow now .

Sir I will post a video by tonight .
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« Reply #7 on: September 18, 2014, 01:03:43 PM »
satyagupta
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Thanks devang, i must say this post has inspired me to convert my 27mhz car to a 2.4Ghz car i will get that done this weekend and post pics

Thanks Thumbs Up
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« Reply #8 on: September 18, 2014, 01:05:34 PM »
devangflyer
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Great !! I hope your car is even better than mine !
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« Reply #9 on: September 18, 2014, 01:09:03 PM »
devangflyer
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BTW. The run time on this is 2 hours . SERIOUSLY !

As it originally used 2x AA cells
And I'm using a 7.4 v 1100 mah 20c battery
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« Reply #10 on: September 18, 2014, 02:08:31 PM »
satyagupta
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I have Hummer H2 which uses 4 x AA so i think it would work fine with 2S lipo
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« Reply #11 on: September 18, 2014, 02:10:18 PM »
devangflyer
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It should work great !
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« Reply #12 on: September 18, 2014, 03:22:08 PM »
devangflyer
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Video -
Video should be available in 30 mins ( wasted all leftover 3G downloading IOS 8 yesterday across all my I devices )
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« Reply #13 on: September 18, 2014, 03:33:03 PM »
devangflyer
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Available now .
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« Reply #14 on: September 18, 2014, 03:58:07 PM »
rohan123
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Nice work devang!!!
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« Reply #15 on: September 18, 2014, 04:02:59 PM »
devangflyer
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Thanks
How was my drifting ?
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« Reply #16 on: September 18, 2014, 04:07:29 PM »
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It was good...how fast did it go??
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« Reply #17 on: September 18, 2014, 04:08:58 PM »
devangflyer
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Not very sure , but it's atleast 60 kmph
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« Reply #18 on: September 18, 2014, 04:19:55 PM »
K K Iyer
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Excellent!  Clap
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« Reply #19 on: September 18, 2014, 04:20:33 PM »
devangflyer
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Thanks sir
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« Reply #20 on: September 18, 2014, 04:27:03 PM »
rcrcnitesh
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Very good.
How can it be 60kmph with stock motor.
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« Reply #21 on: September 18, 2014, 04:28:56 PM »
devangflyer
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I said that I was not very sure , I guessed it by thinking of a real car at 60 and then this at full speed . I will try to make a video of it in full speed also .
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« Reply #22 on: September 18, 2014, 08:06:03 PM »
satyagupta
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EMAX 9 Gram metal gear servo would work??
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« Reply #23 on: September 18, 2014, 08:09:29 PM »
devangflyer
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Sir , it depends on the scale , I would recommend you a standard size plastic servo only as it has about 3.5 - 4.4 kg torque , hummer is a off roader , on the dirt the force should be a lot  that would try to pull the wheels on one side .
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« Reply #24 on: September 18, 2014, 08:19:14 PM »
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You can get a rough calculation if you can find out the maximum revs on the brushed motor. Since it's a simple gear reduction, you can calculate the theoretical top speed easily.
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« Reply #25 on: September 18, 2014, 08:31:07 PM »
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Quote from: devangflyer on September 18, 2014, 04:08:58 PM
Not very sure , but it's atleast 60 kmph
@devangflyer
Easy to estimate.
Standard conversion is 30mph=44fps=48kmph
So if it is going over 60kmph, it must be covering about 55ft every second...
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« Reply #26 on: September 18, 2014, 08:56:27 PM »
devangflyer
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Thanks sir , I'm taking it to a proper track on Sunday , i will try it there .
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« Reply #27 on: September 21, 2014, 08:38:32 AM »
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What tx are you using? Please explain how you would setup reverse if at all the ESC supported, with a normal tx, not those ground transmitter. My nephew wants help on converting a Maisto static model to RC. Thanks in advance...
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« Reply #28 on: September 21, 2014, 01:41:13 PM »
devangflyer
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I'm using a Futaba t8FG Super , it is actually used for planes and helis . A ground remote usually has a spring attached to the throttle stick to keep it in the middle and so if you want to use a reverse esc , just keep the stick in the middle or add a spring there .
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« Reply #29 on: September 21, 2014, 06:53:27 PM »
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This must be a very basic question for a car guy but, how do we setup a normal plane/heli tx to use a brushed ESC with reverse function? Any help? Yes, I ve seen some toy cars where the throttle stick is in centre for neutral, back for reverse and front for normal drive but here, we are talking about mode1/2 style transmitters... Anyway we can achieve this, or there's no way? Thanks.
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« Reply #30 on: September 21, 2014, 07:00:48 PM »
devangflyer
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There's nothing different , you do everything same as you would do in a plane & heli

Mode doesn't effect anything only throttle would be on right side in mode 1
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« Reply #31 on: September 21, 2014, 07:10:34 PM »
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But throttle is 0 or 100 right? How to go reverse is my question...
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« Reply #32 on: September 21, 2014, 07:13:11 PM »
devangflyer
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You calibrate the esc with the stick in the middle , so the esc takes  50 as 0 and 0 as -50
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« Reply #33 on: September 21, 2014, 07:26:35 PM »
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I will be great if that works. Thanks... By the way, nice mod of the car. Post more vids...
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« Reply #34 on: September 21, 2014, 07:28:43 PM »
devangflyer
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Will do
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« Reply #35 on: September 23, 2014, 01:08:20 AM »
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Very good work devang Clap Clap
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« Reply #36 on: October 18, 2014, 11:10:02 AM »
AnjanBabu
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Quote from: intorc on September 21, 2014, 07:10:34 PM
But throttle is 0 or 100 right? How to go reverse is my question...

Put the car ESC plug on the elevator channel, which is already centered and calibrate it to those stick limits. Use the rudder/aileron channel for steering.
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« Reply #37 on: October 18, 2014, 01:31:30 PM »
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That should work too. I bought a used brushed ESC with with reverse from one of the forum member but the throttle wont at all, however, BEC seems to work because a servo connected for steering works fine. Nothing on the board seems to be burnt. Devang I apologise for hijacking your thread, I was unsure if I should start a new topic.
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« Reply #38 on: October 18, 2014, 02:36:53 PM »
devangflyer
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you do not need to post an apology sir , the main aim of every single thread of this forum is to help each other .
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