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11-25-2011, 10:45 PM
| #1 |
| RCC Addict  Join Date: Nov 2011 Location: the not so white north
Posts: 1,299
|  Help with ecs and motors
Bit of a noob but I just set up my XR 10 and am having a couple issues. 2 fxrs 2 novack 45t rockstrar motors hitech 7954 futaba 4pl HB Sedonas upgrades to come after I start using it. Now I have 2 issues: 1. one motor sometimes wont work. esc shows throttle but no movement. 2.both axles don not appear to be turning at the same rate. Followed the 4 pl set up link in here so think thats set up right. I have turned up the ratio to 120 to 100 for the throttle but still is not even wheel speed. Battery packs are full. O and should I be running a bec? |
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11-25-2011, 10:52 PM
| #2 | |
| Quarry Creeper Join Date: Dec 2009 Location: Grass Valley Ca
Posts: 326
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11-25-2011, 11:22 PM
| #3 |
| RCC Addict Join Date: Nov 2011 Location: the not so white north
Posts: 1,299
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I am only running a 2s lipo and was told that should be fine for the escs. Was I misinformed?
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11-25-2011, 11:26 PM
| #4 | |
| Quarry Creeper Join Date: Dec 2009 Location: Grass Valley Ca
Posts: 326
| Quote:
its the best 25$ you will ever spend full steering power and full power to your esc at all times. you can run a 3s lipo no problem also on a fxr. I think you are putting one esc into lipo cutoff maybe? i would try it and see if it fixes your problem, i bet it will.
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11-25-2011, 11:31 PM
| #5 |
| RCC Addict Join Date: Nov 2011 Location: the not so white north
Posts: 1,299
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Ok I will go pick one up. Is that going to fix both problems?
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11-25-2011, 11:35 PM
| #6 | |
| Quarry Creeper Join Date: Dec 2009 Location: Grass Valley Ca
Posts: 326
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11-25-2011, 11:47 PM
| #7 |
| RCC Addict Join Date: Nov 2011 Location: the not so white north
Posts: 1,299
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no steering issues at all just motors not working front or back but never at the same time. one cuts out when i hit the throttle or going from forward to reverse. then when having all 4 tires spinning in the air they do not appear to be at the same wheel speed.
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11-25-2011, 11:56 PM
| #8 |
| Quarry Creeper Join Date: Dec 2009 Location: Grass Valley Ca
Posts: 326
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I would try BEC and see if that solves your problem i just didnt know if you where having steering issues as well.
Last edited by Jrob; 11-26-2011 at 12:00 AM. |
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11-26-2011, 12:03 AM
| #9 |
| I wanna be Dave Join Date: Dec 2009 Location: San Francisco
Posts: 2,236
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Chances are that you will need a BEC. You should run 3s. Have you calibrated the ESC's to the remote? Sounds like that is your problem. Put your settings back to how Harley's thread says and then calibrate. See the FXR manual if you dont know how to calibrate. |
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11-26-2011, 06:15 AM
| #10 | |
| I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
| Quote:
Also, are you running the same motor gearing front to rear? Are you running the same firmware in each FX-R? Do you have the throttle & brake curves in each FX-R? Are both motors timed the same (is one motor faster in forward, the other one faster in reverse)? This is a common issue since most motor manufacturers either set "0" timing on all motors, or set a little bit of advance timing. The advance timing is an issue since one motor rotates "backwards" in a MOA. This means it's timing is retarded, NOT advanced. What mah & "C" ratings are your packs? What connectors are you using for the battery power? | |
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11-26-2011, 10:54 AM
| #11 | |
| RCC Addict Join Date: Nov 2011 Location: the not so white north
Posts: 1,299
| Quote:
Yes the esc's are calibrated. I did them at the exact same time so there would be no difference between them. Same gearing front and back. Not sure about the firmware. They are both brand new and using 14ga. wire and deans. The battery is a 2s lipo 1100mah 30c. | |
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11-26-2011, 11:44 AM
| #12 | |
| I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
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11-26-2011, 01:27 PM
| #13 |
| RCC Addict Join Date: Nov 2011 Location: the not so white north
Posts: 1,299
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Not sure how to check the motor timing. But I think that maybe the wheel speed issue but what is causing the motor to not engage when the throttle is hit and the speed control shows full throttle yet not wheel spin. So far it only happens to 1 axle at a time. They never both not work just one. More so from forward to reverse or reverse to forward. Did I maybe get a faulty cap with the esc?
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11-26-2011, 01:36 PM
| #14 | |
| Quarry Creeper Join Date: Dec 2009 Location: Grass Valley Ca
Posts: 326
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11-30-2011, 09:49 AM
| #15 | |
| RCC Addict Join Date: Nov 2011 Location: the not so white north
Posts: 1,299
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Does anyone have any recommended settings for the hotwire set-up and my components? The bec does not appear to have made any difference to the esc functions or steering but gonna leave it in so I can run 3s. Just picked up hyperion 1300mah 25c battery for it. | |
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11-30-2011, 08:16 PM
| #16 |
| I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
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Glad you found the issue, it's also great you posted the resolution. |
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