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04-28-2019, 01:37 AM | #1 |
Rock Stacker Join Date: Apr 2019 Location: Olympia
Posts: 52
| TRX-4 Sport- Jerky drive when at steering Max?
I have a question about my truck. It seems when I have the steering maxed out the wheels sort of get jerky and seems to pulse when at slower speed the drive lurches. It is worse on one side than the other. I notice it when I am driving around trying to make a tight turn. Being new to crawling I don't know if this is a normal trait to these types of vehicles. I posted a video to youtube. https://youtu.be/C6rQpTQ-IZU Maybe someone could lend some advice? Thanks. |
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04-28-2019, 02:11 AM | #2 |
RCC Addict Join Date: Nov 2016 Location: 1972 born Christian, Chinese.
Posts: 1,321
| Re: TRX-4 Sport- Jerky drive when at steering Max?
Just limit your steering end point. Problem solved. Sent from my iPad using Tapatalk |
04-28-2019, 06:29 AM | #3 |
Pebble Pounder Join Date: Jan 2017 Location: Brookfield
Posts: 185
| Re: TRX-4 Sport- Jerky drive when at steering Max?
It's probably that stock servo asking to you to please stop lol. Those stock servos seem to be hit or miss. Like teng said check your endpoints then take it from there. Do you other things that may be drawing power? Sent from my SM-N950U using Tapatalk |
04-28-2019, 10:59 AM | #4 |
Pebble Pounder Join Date: Jul 2013 Location: Germany
Posts: 132
| Re: TRX-4 Sport- Jerky drive when at steering Max?
If it's not the servo kicking the max you may need to cut the drive shafts. Personally i do not have the problem on my trucks, but some of my german co owners said they cut/grind a hair off the diff end of the axle shafts, like 0.3mm. On full steering the outer joints make the axle jiggle so it pushes into the diff, which in turn gets stuck. |
04-28-2019, 12:33 PM | #5 | |
Rock Stacker Join Date: Apr 2019 Location: Olympia
Posts: 52
| Re: TRX-4 Sport- Jerky drive when at steering Max? Quote:
This is just a stock sport model, just a few weeks old. No additions that would be taking extra power. By endpoint adjustment, do you mean an adjustment on the truck itself, or on the radio? | |
04-28-2019, 12:37 PM | #6 | |
Rock Stacker Join Date: Apr 2019 Location: Olympia
Posts: 52
| Re: TRX-4 Sport- Jerky drive when at steering Max? Quote:
That axle shaft thing sounds like it could be the culprit. I will look into that. | |
04-28-2019, 01:07 PM | #7 |
Pebble Pounder Join Date: Jul 2013 Location: Germany
Posts: 132
| Re: TRX-4 Sport- Jerky drive when at steering Max?
Endpoint adjustment usually is made in the transmitter and limits the steering travel, thus avoiding the problem.
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04-28-2019, 03:46 PM | #8 | |
Pebble Pounder Join Date: Jan 2017 Location: Brookfield
Posts: 185
| Re: TRX-4 Sport- Jerky drive when at steering Max? Quote:
https://youtu.be/eyZwhVIltGs Sent from my SM-N950U using Tapatalk | |
04-28-2019, 04:24 PM | #9 | |
Rock Stacker Join Date: Apr 2019 Location: Olympia
Posts: 52
| Re: TRX-4 Sport- Jerky drive when at steering Max? Quote:
Thanks for the link. Its the stock Sport radio that only has trim adjustment and doesn't have the menu button needed for that adjustment. Maybe my next purchase needs to be a better radio. I do have an old Spectrum Dx2 from when I raced that is setup for my Losi XXT-CR, I'll go replace the stock radio with that for the time being. | |
04-28-2019, 08:14 PM | #10 |
RCC Addict Join Date: Aug 2017 Location: Fredericksburg, VA
Posts: 1,912
| Re: TRX-4 Sport- Jerky drive when at steering Max?
The TRX4 Sport comes with the TQ transmitter which is not programmable.
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04-29-2019, 05:45 AM | #11 |
Quarry Creeper Join Date: Mar 2019 Location: Low CG
Posts: 266
| Re: TRX-4 Sport- Jerky drive when at steering Max?
My TRX4 does the same thing at full lock left or right. Yes, it does unfortunately bind the driveline and slow the truck down. I'm running a SRT servo at 8V and Sanwa radio. I don't want to limit my much needed steering travel and am looking for alternatives too.
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04-29-2019, 06:20 AM | #12 | |
Pebble Pounder Join Date: Jan 2017 Location: Brookfield
Posts: 185
| Re: TRX-4 Sport- Jerky drive when at steering Max? Quote:
Sent from my SM-N950U using Tapatalk | |
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