Go Back   RCCrawler Forums > RCCrawler General Tech > Newbie General
Loading

Notices

Thread: Need more throttle trim; is there another option?

Reply
 
LinkBack Thread Tools Display Modes
Old 07-24-2011, 12:10 PM   #1
Newbie
 
Join Date: Mar 2011
Location: Lafayette
Posts: 9
Default Need more throttle trim; is there another option?

I need help with my electronics setup. I have finally finished my SCX10 kit build and got all the electronics hooked up. I plugged in my battery, turned my 4PL on, turned the speed control on, and the motor started running without any throttle input. The steering servo was off a bit as well, so I centered it using the steering trim. I tried to use the throttle trim to address the motor running about 1/4 [reverse] throttle, but run out of trim adjustment before I can get it to stop. I'm not sure what to do at this point. I have searched the newbie thread as well as the electronics thread, but cannot find anything. Probably not searching with the correct phrases, but I tried several. Will someone take the time to give me some tips? I am running a Novak Ballistic 18.5 brushless motor with the Novak Goat 3S speed control. The truck drives fine and is smooth as silk, but it won't sit still without some forward throttle input. Thanks.
gr8_outdoors is offline   Reply With Quote
Sponsored Links
Old 07-24-2011, 12:16 PM   #2
I wanna be Dave
 
Join Date: Nov 2010
Location: 07456 N. NJ USofA
Posts: 8,314
Default

Step 1, center the throttle trim ("0") on the TX
Step 2, set the throttle EPA's to 100%
Step 3, calibrate the ESC to the RX
Step 4, go have fun
Charlie-III is offline   Reply With Quote
Old 07-24-2011, 01:32 PM   #3
Newbie
 
Join Date: Mar 2011
Location: Lafayette
Posts: 9
Default

I am not sure I understand your simple 4 steps. Sorry. I had the throttle trim set to zero and the EPAs to 100% when all this happened. I adjusted the trim to 100 and it slowed the truck greatly, but not to a standstill. Step three makes it seem like the speed control and TX will "understand" the issue and self adjust, but I struggle to understand how that can be. Can you elaborate on step 3? I was able to utilize the subtrim adjustment in the last 30 minutes to get the truck to sit still. Trim it at 100 and the subtrim is at 30. Still seems to drive fine, just not sure if this type of trim setting will be ok long term or if I have something setup incorrectly. Thanks for the help Charlie-III.
gr8_outdoors is offline   Reply With Quote
Old 07-24-2011, 02:08 PM   #4
Quarry Creeper
 
Join Date: Feb 2011
Location: Vancouver, WA
Posts: 423
Default

What esc are you using?
forbid89 is offline   Reply With Quote
Old 07-24-2011, 02:20 PM   #5
I wanna be Dave
 
Join Date: Jul 2009
Location: Rancho Relaxo. California. USA. Earth.
Posts: 3,292
Default

Follow Charlie's steps again carefully. He's pointing out that you need to calibrate your radio to your esc.
Meatwad is offline   Reply With Quote
Old 07-24-2011, 02:29 PM   #6
Rock Stacker
 
Join Date: Apr 2011
Location: Bellingham, WA
Posts: 66
Default

What esc are you using so that we can help you to calibrate your 4pl to the esc and have total control of your scx10.
CrawlerG is offline   Reply With Quote
Old 07-24-2011, 03:11 PM   #7
I wanna be Dave
 
Join Date: Nov 2010
Location: 07456 N. NJ USofA
Posts: 8,314
Default

Quote:
Originally Posted by Meatwad View Post
Follow Charlie's steps again carefully. He's pointing out that you need to calibrate your radio to your esc.
Thanks Meatwad.

For step 3, it varies based on brand/model ESC. Most are sorta like, "TX on, hold full throttle, power up ESC, wait for lights/chimes, TX to full reverse, wait for lights/chimes, TX to neutral.......ESC is now calibrated to RX."


(BTW, I have a customer site on the north side of SJ as well as one in RWC.)
Charlie-III is offline   Reply With Quote
Old 07-24-2011, 04:18 PM   #8
Newbie
 
Join Date: Mar 2011
Location: Lafayette
Posts: 9
Default

Sorry for the delayed response. I got caught up looking for other hop-up parts. I am running the Novak Goat 3S ESC and a Futaba 4PL.
gr8_outdoors is offline   Reply With Quote
Old 07-24-2011, 04:29 PM   #9
Quarry Creeper
 
Join Date: Feb 2011
Location: Vancouver, WA
Posts: 423
Default

Download the instructions on the left side of this page:

http://www.teamnovak.com/products/es..._3s/index.html

In these instructions step 5 on the second page explains how to calibrate the ESC to your radio.
forbid89 is offline   Reply With Quote
Old 07-24-2011, 04:35 PM   #10
I wanna be Dave
 
Join Date: Jul 2005
Location: North Idaho
Posts: 3,647
Default

please allow me to offer more of a hint...

This is how you calibrate your ESC to your radio...
Greatscott is offline   Reply With Quote
Old 07-24-2011, 04:43 PM   #11
Newbie
 
Join Date: Mar 2011
Location: Lafayette
Posts: 9
Default

Thank you for pointing that out. The last post from Charlie-III led me back to my Novak info to look once again. Guess what I found... I will run through that quick process while I'm trying to eat supper.
gr8_outdoors is offline   Reply With Quote
Old 07-24-2011, 05:16 PM   #12
Newbie
 
Join Date: Mar 2011
Location: Lafayette
Posts: 9
Default

Thanks to all of you that took time out of your day to read and reply to my post. Much appreciated. I ran through the one-touch programming and the truck only needed a minor change to the steering trim to center is up. Seems to be working great. Thanks again. Have a great evening.
gr8_outdoors is offline   Reply With Quote
Old 07-24-2011, 06:37 PM   #13
RCC Addict
 
Join Date: Jul 2009
Location: Dover, NH
Posts: 1,153
Default

One thing as far as the servo goes. If the trim is turned a good amount you may need to center it. You do this by:

1: leave servo horn connected to steering linkage but remove from servo.
2: Center the steering trim on your controller (turn dial to middle) or set to zero trim in digital radios.
3: Turn on vehicle, servo should move to its center point.
4: Install the servo horn with the wheels pointed strait ahead.
5: Make adjustments as necessary with the servo sub trim in the menu if available (4pl) should have this to get the rig to run strait.
Rook82 is offline   Reply With Quote
Old 07-24-2011, 06:39 PM   #14
RCC Addict
 
Join Date: Jul 2009
Location: Dover, NH
Posts: 1,153
Default

Don't forget to set the endpoints for the steering so you do not over stress the steering servo. It may be different for each side so do both.
Rook82 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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 12:21 PM.


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