Go Back   RCCrawler Forums > RCCrawler General Tech > Electronics
Loading

Notices

Thread: Setting Up Dual Fxrs & Qs

Reply
 
LinkBack Thread Tools Display Modes
Old 03-15-2011, 04:25 PM   #1
Quarry Creeper
 
Join Date: Jan 2011
Location: 801
Posts: 334
Question Setting Up Dual Fxrs & Qs

Just curious how I set my fxrs up settings wise? Also my xrs reverse jolts maybe cause the escs arent setup? And lastly sometimes only the front or rears spin under load until I squeeze the throttle more than 1/4 in.
Thanks
EEM-CrawlinMachine is offline   Reply With Quote
Sponsored Links
Old 03-15-2011, 06:20 PM   #2
RCC Addict
 
Join Date: Nov 2005
Location: Saving for Nationals!!
Posts: 1,696
Default

Quote:
Originally Posted by EEM-CrawlinMachine View Post
Just curious how I set my fxrs up settings wise? Also my xrs reverse jolts maybe cause the escs arent setup? And lastly sometimes only the front or rears spin under load until I squeeze the throttle more than 1/4 in.
Thanks
Make sure you set your throttle EPA's to 100 and calibrate each esc separately. i.e. turn one off, then calibrate the other, and then do the opposite on the other one.

As for the jolting, it's possible to get the wires mixed up soldering your motors, and you may need to switch some things around.

As for setup of the esc's themselves, are you using the buttons or a Hotwire to program them?
PaloAltoK5 is offline   Reply With Quote
Old 03-15-2011, 06:44 PM   #3
Quarry Creeper
 
Join Date: Jan 2011
Location: 801
Posts: 334
Default

I wired it all right, not sure what I can change? As far as settings I'm using buttons
EEM-CrawlinMachine is offline   Reply With Quote
Old 03-15-2011, 08:54 PM   #4
I wanna be Dave
 
Join Date: Dec 2009
Location: San Francisco
Posts: 2,236
Default

We need more information...

What exactly is you problem?
What radio are you using?
What motors do you have?

Any other specs would be helpful.
SMR 510RR is offline   Reply With Quote
Old 03-15-2011, 09:53 PM   #5
Quarry Creeper
 
Join Date: Jan 2011
Location: 801
Posts: 334
Default

Under load sometimes only 2 wheels spin until I go over 1/4 throttle

My reverse is strong but pulses

Integy 55t motors
RC4WD xr4 radio with a wantAsummit mix unit

Last edited by EEM-CrawlinMachine; 03-15-2011 at 09:56 PM.
EEM-CrawlinMachine is offline   Reply With Quote
Old 03-15-2011, 11:16 PM   #6
RCC Addict
 
Join Date: Nov 2005
Location: Saving for Nationals!!
Posts: 1,696
Default

Quote:
Originally Posted by EEM-CrawlinMachine View Post
I wired it all right, not sure what I can change? As far as settings I'm using buttons
Using the buttons:

Drag Brake: press the mode button once so the 1st LED is lit up, then press the INCR button until the last LED is lit up. This will put you at 100% Drag brake.

Reverse Strength: Press the MODE button twice so the 2nd LED is lit up, then press the INCR button until the last LED is lit up. This will put you at 100% Reverse Strength.

Current Limit: Leave at default

Push Control: Leave at default

Reverse Type: Press the MODE button five times so the 5th LED is lit up, then press the INCR button until the 1st AND 2nd LED is lit up. This will put you in immediate forward/reverse mode.

Low Voltage Cutoff: Press the MODE button six times so the 6th LED is lit up, then press the INCR button until the 2nd LED is lit up for 2s Li-Po or until the 3rd LED is lit for 3s Li-Po.

That's it, you are set up. Do this for each unit.

As for the not moving until 1/4 throttle, still sounds like a calibration issue to me. What pinions are you running on your 55t motors? Are both motors timed the same?
PaloAltoK5 is offline   Reply With Quote
Old 03-16-2011, 01:17 AM   #7
I wanna be Dave
 
Join Date: Dec 2009
Location: San Francisco
Posts: 2,236
Default

Yea, recalibrate both esc's. Make sure the mix unit is at neutral when you calibrate.

Also, check the timing on your motors, if they were timed anything other than 0 deg. from the factory then you are running one of them in reverse. If they are both 0 then you should be ok or if both are advanced the same amount you will be good. Take the rotation direction into account when checking them, obviously one should go the opposite direction than the other.

Can you describe the situation where you are having the problem? How bad of a bind are we talking about, does one axle seem stronger in general, are you climbing when it happens?

I have no idea why reverse would be "pulsing"...That doesnt seem ESC related unless its just a calibration issue. Are you running a BEC? Is it wired through the receiver? Does the light on it cut out? Seems more like a radio glitch to me.
SMR 510RR is offline   Reply With Quote
Old 03-16-2011, 08:57 AM   #8
Quarry Creeper
 
Join Date: Jan 2011
Location: 801
Posts: 334
Default

It only does 2 wheels on light loads climbing, my reverse worked fine with only 1 fxr on my scaler

How do you time motors? Both motors using 14t pinions
Thanks
EEM-CrawlinMachine is offline   Reply With Quote
Old 03-16-2011, 11:56 AM   #9
I wanna be Dave
 
Join Date: Dec 2009
Location: San Francisco
Posts: 2,236
Default

Try this, just check it based on the markings on the can and endbell.
Caring for your new Brushed motor

You can search for "Timing" in electronics for more info if you need it.
SMR 510RR is offline   Reply With Quote
Old 03-16-2011, 04:32 PM   #10
Rock Crawler
 
Join Date: Apr 2006
Location: Thorp WA, more sheep than men...
Posts: 543
Default

AS stated recal. the escs, i just unplug one at a time to do this... Not sure about the mixer? yer using...
dickwart is offline   Reply With Quote
Old 03-17-2011, 09:19 AM   #11
Quarry Creeper
 
Join Date: Jan 2011
Location: 801
Posts: 334
Default

Thanks guys. Any ideas on the pulsing reverse?
EEM-CrawlinMachine is offline   Reply With Quote
Old 03-18-2011, 10:43 AM   #12
Quarry Creeper
 
Join Date: Jan 2011
Location: 801
Posts: 334
Default

Anyone?
EEM-CrawlinMachine is offline   Reply With Quote
Old 03-18-2011, 11:03 AM   #13
20K Club
 
Harley's Avatar
 
Join Date: Jul 2004
Location: Sending illegals home one Hayabusa at a time.
Posts: 22,981
Default

Quote:
Originally Posted by PaloAltoK5 View Post
Make sure you set your throttle EPA's to 100 and calibrate each esc separately. i.e. turn one off, then calibrate the other, and then do the opposite on the other one.
Quote:
Originally Posted by dickwart View Post
AS stated recal. the escs, i just unplug one at a time to do this... Not sure about the mixer? yer using...
It is best to program both ESC's at the same time. I have walked probably HUNDREDS of people through programming their stuff as well as countless of my own. Programming both at the same time is always the best method for dual FXR's.
Harley is offline   Reply With Quote
Old 03-18-2011, 11:56 AM   #14
I wanna be Dave
 
Join Date: Dec 2009
Location: San Francisco
Posts: 2,236
Default

Quote:
Originally Posted by Harley View Post
It is best to program both ESC's at the same time. I have walked probably HUNDREDS of people through programming their stuff as well as countless of my own. Programming both at the same time is always the best method for dual FXR's.
I agree although it takes some flexibility or someone else to help you at least if you take the on/off switches off.
SMR 510RR is offline   Reply With Quote
Old 03-18-2011, 11:59 AM   #15
20K Club
 
Harley's Avatar
 
Join Date: Jul 2004
Location: Sending illegals home one Hayabusa at a time.
Posts: 22,981
Default

Quote:
Originally Posted by SMR 510RR View Post
I agree although it takes some flexibility or someone else to help you at least if you take the on/off switches off.
I just put a rubberband around the throttle
Harley is offline   Reply With Quote
Old 03-18-2011, 12:04 PM   #16
RCC Addict
 
Join Date: Nov 2005
Location: Saving for Nationals!!
Posts: 1,696
Default

Quote:
Originally Posted by Harley View Post
I just put a rubberband around the throttle

eh...ok, I am confused then, how do they find neutral and reverse if you rubberband the throttle while calibrating?
PaloAltoK5 is offline   Reply With Quote
Old 03-18-2011, 12:15 PM   #17
20K Club
 
Harley's Avatar
 
Join Date: Jul 2004
Location: Sending illegals home one Hayabusa at a time.
Posts: 22,981
Default

Quote:
Originally Posted by PaloAltoK5 View Post
eh...ok, I am confused then, how do they find neutral and reverse if you rubberband the throttle while calibrating?
You only need to do it at the begining when you plug that battery in so you don't need another set of hands (on the castle stuff only now that I think about it). FXR's I can push both buttons myself without a problem.
Harley is offline   Reply With Quote
Old 03-18-2011, 12:18 PM   #18
RCC Addict
 
Join Date: Nov 2005
Location: Saving for Nationals!!
Posts: 1,696
Default

Quote:
Originally Posted by Harley View Post
You only need to do it at the begining when you plug that battery in so you don't need another set of hands (on the castle stuff only now that I think about it). FXR's I can push both buttons myself without a problem.
Ah, ok....see, now don't be confusing peeps, silly harley!
PaloAltoK5 is offline   Reply With Quote
Old 03-18-2011, 12:29 PM   #19
RCC Addict
 
Join Date: Nov 2005
Location: Saving for Nationals!!
Posts: 1,696
Default

One more thing, when calibrating, remember you have to have them wired correctly, or the radio F/R set correct for each channel so it calibrates them both forward when you pull the trigger, and both reverse when you push it. I don't know how many times I have checked peoples setups and after neutral is detected I pulled the trigger and one esc calibrates forward and the other thought I was it reverse and wouldn't calibrate....annoying, but easily solved. Just keep this in mind.
PaloAltoK5 is offline   Reply With Quote
Old 03-18-2011, 06:13 PM   #20
I wanna be Dave
 
Join Date: Dec 2009
Location: San Francisco
Posts: 2,236
Default

Quote:
Originally Posted by Harley View Post
You only need to do it at the begining when you plug that battery in so you don't need another set of hands (on the castle stuff only now that I think about it). FXR's I can push both buttons myself without a problem.
You are talented if you can push both buttons and plug in the battery at the same time. Took me like 20 minutes to get it haha.
SMR 510RR is offline   Reply With Quote
Reply



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 06:47 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.
Copyright 2004-2014 RCCrawler.com