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Thread: new2rocks Guide to the TRX-4

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Old 05-09-2019, 11:17 AM   #61
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Default Re: new2rocks Guide to the TRX-4

Quote:
Originally Posted by BashNSlash View Post
I'm having a hard time visualizing this - does someone have a photo of how this is done? I'd like to see if lowering the ride height will help with stability on my Defender (without replacing the shocks).
See the limiter label on this diagram, works the same on all shocks.

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Old 05-09-2019, 11:23 AM   #62
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Default Re: new2rocks Guide to the TRX-4

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Originally Posted by svt923 View Post
See the limiter label on this diagram, works the same on all shocks.

Awesome! Thanks!
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Old 06-06-2019, 11:30 AM   #63
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Default Re: new2rocks Guide to the TRX-4

Just found this thread - great info on the TRX4 chassis and drivetrain.

Can you comment on motor choice for TRX4 Sport? Does it have the same reduction as the Defender and others?

I had two motors on hand, a Crawlmaster Expert 16T and a Trailmaster 550 21T (it might be a 27T - I always forget to account for the bigger can).
Stock gearing currently, but I probly have some other pinions hanging around.
I ended up installing the Crawlmaster and it runs real nice on 2s, a little fast on 3s, but have not tried the latter in the rocks.

Did I miss the boat using the bigger but cheaper motor? Sure easy to change out.
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Old 03-06-2020, 08:14 AM   #64
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Default Re: new2rocks Guide to the TRX-4

Has anyone had a problem with the exposed portal bearings coming out? had my trx4 for a few years... it's a kit.
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Old 03-06-2020, 08:25 AM   #65
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Default Re: new2rocks Guide to the TRX-4

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Originally Posted by crawlerjunkie View Post
Has anyone had a problem with the exposed portal bearings coming out? had my trx4 for a few years... it's a kit.
I'm not sure what you mean by exposed portal bearing, but I've never had any fall out. Are you sure you have the correct size bearing installed there?
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Old 03-06-2020, 10:05 AM   #66
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Default Re: new2rocks Guide to the TRX-4

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I'm not sure what you mean by exposed portal bearing, but I've never had any fall out. Are you sure you have the correct size bearing installed there?
I think he is talking about the bearing that would go in the circled area. The one side is exposed. Can't see it falling out if the three tiny screws are in place.

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Old 03-07-2020, 08:02 PM   #67
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Default Re: new2rocks Guide to the TRX-4

Has anyone been having issues with the stock diff lock servos stripping inside?
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Old 04-04-2020, 11:48 AM   #68
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Default Re: new2rocks Guide to the TRX-4

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Originally Posted by crawlerjunkie View Post
Has anyone been having issues with the stock diff lock servos stripping inside?
I hav heard of this happening occasionally. I came across this issue during research on which crawler to purchase. It was mentioned on one of the RC REVIEWS YouTube videos, and he has several trx-4's. But it appears to be a less common failure.
I am a noob with no rock crawler.... just so you are aware.
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Old 04-05-2020, 08:58 AM   #69
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Default new2rocks Guide to the TRX-4

Quote:
Originally Posted by crawlerjunkie View Post
Has anyone been having issues with the stock diff lock servos stripping inside?


Quote:
Originally Posted by Ptex View Post
I hav heard of this happening occasionally. I came across this issue during research on which crawler to purchase. It was mentioned on one of the RC REVIEWS YouTube videos, and he has several trx-4's. But it appears to be a less common failure.

I am a noob with no rock crawler.... just so you are aware.

The Traxxas sub-micro servos have plastic gears and can be a bit delicate. Blue Bird and EcoPower have metal gear sub-micro servos that bolt in and are much stronger. That said, I havenít lost a shift/diff lock servo yet on my 2 primary TRX-4s.

Last edited by new2rocks; 04-09-2020 at 06:29 PM.
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Old 07-30-2020, 12:35 PM   #70
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Default Re: new2rocks Guide to the TRX-4

What type of grease is needed please.

2. Check the diff, tranny and transfer case gears for grease. Greasing from the factory in early production models has been hit or miss, which isn't uncommon with RTRs.
Cases shouldn't be packed with grease, but there should be enough grease to give the gears a nice, full coating.

Thank you, Uncle Pete
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Old 08-01-2020, 08:47 AM   #71
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Default Re: new2rocks Guide to the TRX-4

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Originally Posted by Uncle Pete View Post
What type of grease is needed please.

2. Check the diff, tranny and transfer case gears for grease. Greasing from the factory in early production models has been hit or miss, which isn't uncommon with RTRs.
Cases shouldn't be packed with grease, but there should be enough grease to give the gears a nice, full coating.

Thank you, Uncle Pete

Uncle Pete,

I use Mobil 1 synthetic grease and a hobby paint brush as an applicator.

For the price point, Iíll have RC grease for a long time.

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Old 08-02-2020, 12:35 PM   #72
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Default Re: new2rocks Guide to the TRX-4

Grease just the gears and not the T-lock that engages and disengages the lockers.
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Old 01-23-2021, 05:14 AM   #73
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Default Re: new2rocks Guide to the TRX-4

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Originally Posted by Jeff6x6 View Post
Grease just the gears and not the T-lock that engages and disengages the lockers.
What's the issue with greasing the diff T lock?
I greased them plenty on both of ours and had no problems so far.
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