2011.01.07, 01:23 AM
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#16
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Registered User
Join Date: Jan 2011
Posts: 31
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Quote:
Originally Posted by wildthing
the ESC is a BL ESC rated for 10A sold in china.
5v BEC
Forward, Brake, Reverse... ABS brake (all other features programable manually and/or through a prog-Box)
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Thanks
Wildthing here was actually the one who provided me with the ESC. Great Stuff!!
Here are the programmable functions;
- Reverse On/Off
- Motor Timing adjust from between 0 to 30 degrees in 1 degree increments
- Acceleration : Soft, Common, Hard
- Battery Type : NiCd/NiMh, Li-Ion, Li-Pol
- NiCd/NiMh Cut off voltage : 0.05V, 0.4V, 0.5V,0.6V, -- 1.0V
- Number of Cells Li-Ion, Li-Pol
- LiIo/LiPo Cutoff voltage
- Cut-off type: Soft, Hard
- Throttle Curve: Logarithmic, Linear, Exponential
- ABS Brake on/off
- Power Limit for Forward - off,75%,50%,25%
- Power Limit for Reverse - off,75%,50%,25%
- Delay Time of startup : 0.25sec,0.5,0.7,1sec,1.5,2sec,3sec,5sec
- Forward Point: Automatic, 1.7ms,1.8ms,1.9ms,2.0ms
- Reverse Point: Automatic, 1.0ms,1.1ms,1.2ms,1.3ms
- Timing Monitor: on/off
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2011.01.07, 07:31 AM
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#17
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Registered User
Join Date: Dec 2010
Posts: 19
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Wow, thank you for all the input. This definitely convinces me how doable this is... Totally agree with you on the Bl motor and the reason to do this mod.
Like it more each time. Wonder if that BL motor fits in the AWD. The motor was origionally for a CB100 right, or that size? Looks that way.
He he, I get chills thinking about it. Awsome.
Drhavy
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2011.01.07, 09:04 AM
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#18
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RC addict
Join Date: Jul 2009
Location: Pilipinas
Posts: 227
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I think it would fit an AWD... the motor is small. diameter is 12mm, can lenght is 22mm... shaft is only 1.5mm. modification is required to make a motor mount and properly mount the pinion.
FA130 vs BL motor size (picture taken by EQMOD)
http://i263.photobucket.com/albums/i...motor_0001.jpg
If you are familiar with the losi xcelorin BL motor... it is of nearly the same size.
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2011.01.07, 10:40 AM
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#19
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Registered User
Join Date: Dec 2010
Posts: 19
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The motors look small enough! Did you try the outrunner yet. I was thinking of trying that one out.
I have a cb100 and a couple of those motors lying around. Gonna order the stuff i need to do this. Thanks.
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2011.01.08, 02:33 AM
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#21
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Registered User
Join Date: Oct 2004
Location: NW Chicago Burbs
Posts: 104
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Please post info on the steering servo board.
I did a similar conversion using the board from a small Blue Arrow servo and I sometimes get oscillations where it seems to overshoot, then overcorrect the other way.
Does your steering behave well?
__________________
I-Lap Timing Systems
Precision Timing for Small Scale Motorsports
www.rclapcounter.com
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2011.01.08, 04:08 AM
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#22
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Registered User
Join Date: Jan 2011
Posts: 31
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Connections pretty much standard;
The servo is pretty much stable on my setup.
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2011.01.08, 10:59 AM
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#23
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Registered User
Join Date: Oct 2004
Location: NW Chicago Burbs
Posts: 104
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I have it wired correctly, I think it is just trying to drive the motor too fast or maybe doesn't work well with the range of the F1 feedback pot.
I was asking for details or source of the board you used. I watched some of your videos and the steering looks like it works very well.
.
__________________
I-Lap Timing Systems
Precision Timing for Small Scale Motorsports
www.rclapcounter.com
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2011.01.08, 06:46 PM
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#24
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Registered User
Join Date: Jan 2011
Posts: 31
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here is one little test while the tx and rx is active; if you force the wheels to steer on one side by hand, does the servo motor buzz ? I am basically using the type of servo board that sends a pulse width modulated fixed amplitude pulses on the motor (cause of the buzzing) instead of the type that varies the voltage (amplitude). My first attempt actually was that kind that varies the voltagte and it usually oversteers or barely moves at all even with steering input from the TX.
Right now i am using a Esky 8g Servo control board which i got from a Esky Lama V4 rc helicopter.
Last edited by EQMOD; 2011.01.08 at 06:50 PM.
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2011.01.09, 02:03 PM
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#25
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Registered User
Join Date: Dec 2010
Posts: 19
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EQMOD,
Thanks for the help, got my stuff ordered and on the way. Before this thread I was going to dump money into several ideas (none brushless), but what I really wanted was to get to brushless. So your post has helped me to buy the right things for the project.
I have to ask, what do you find to be a drivable top speed for the average track... lets say a mini96 or something slightly larger? And what voltage did you end up using. I'm thinking of even trying 3.6 LiFe 500 cells 2 or just the 4 AAA cells are good enough?
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2011.01.09, 07:30 PM
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#26
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Registered User
Join Date: Dec 2010
Posts: 19
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Here is a link to a Mini Z with a X racer engine and LiFe 400 mah cels. It says he gets 15 min: I think that looks like a good target max speed for that size a track. Maybe slower for smaller tracks. Is that BL motor w/ the NiMH's similar to this in speed?
http://www.youtube.com/watch?v=g0mRYOK_qYg
Drhavy
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2011.01.15, 05:23 PM
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#28
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RC addict
Join Date: Jul 2009
Location: Pilipinas
Posts: 227
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next upgrade.... ball differentials with ceramic bearings... hehehe
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2012.08.22, 10:53 AM
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#29
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Registered User
Join Date: Aug 2011
Location: Norway
Posts: 579
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Love this things.
Nice work man!
__________________
Artificial intelligence is no match for natural stupidity
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