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Thread: TRX4 or TRX4 Sport Kit? Help please.

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Old 07-04-2019, 10:08 AM   #1
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Default TRX4 or TRX4 Sport Kit? Help please.

Hey,

trying to figure out which truck is the "correct" one for me, i feel like i'm missing a few bits of information to make a educated decision.

I've owned a few RCs so far, want to try my first RC Crawler/Trail Runner now. After figuring out the differences between all the TRXs, i got it down to both the TRX4 Bronco (or the Defender, i know about the wheelbase/fender difference), or the TRX4 Sport Kit with decent electronics.

Here's my dilemma. I do like the two gear transmission in the TRX4. I don't like that i can't use my own radio with it (Sanwa MT-4), since it's only a 4 channel radio/receiver. I also don't want to buy the TRX4 and permanently lock the diffs, because it feels like i'd waste quite some money for something that i'm not using, if that makes sense.

Basically, here's the questions - tried googling it, didn't come up with much. First, would it be possible to wire the TRX4 diff-servos so they run off of one channel? Basically both diffs either on, or off.

Or, second, is the TRX4 transmission compatible with the TRX4 Sport Kit? As a "bolt on" replacement?

Thanks.
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Old 07-04-2019, 12:25 PM   #2
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

In a nutshell, yes and yes. A Y harness will tie both diff lock servos together. All the trx4 transmissions are interchangeable
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Old 07-04-2019, 12:27 PM   #3
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

Cheers - since i can't adjust the endpoints on the diff servos anyway, there's no real downside to it other than i wouldn't be able to selectively lock a single diff, or am i missing something?
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Old 07-04-2019, 04:25 PM   #4
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

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Originally Posted by OSRC View Post
In a nutshell, yes and yes. A Y harness will tie both diff lock servos together. All the trx4 transmissions are interchangeable
Actually, you need a y-harness and a servo reverser. If Traxxas had thought a little more and turned one of those servos around, that reverser wouldn't be needed.
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Old 07-04-2019, 08:23 PM   #5
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

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Originally Posted by punkindrublik View Post
Actually, you need a y-harness and a servo reverser. If Traxxas had thought a little more and turned one of those servos around, that reverser wouldn't be needed.
Thank you very much, gonna order one of those too. Can be had for quite cheap.
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Old 07-04-2019, 08:40 PM   #6
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

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Originally Posted by m4inbrain View Post
Thank you very much, gonna order one of those too. Can be had for quite cheap.
I'll make ya a deal on the one I ordered. I was going to use it with my Lynx 4 but it decided to stop working so I picked up a GT5 and now no longer need it. Let me know if I can set ya up.
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Old 07-04-2019, 09:08 PM   #7
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

Much appreciated mate, but if you're located in North Highlands California, and not in the north of the scottish Highlands, that wouldn't be worth the effort.

I'm based in the UK, and that reverser can be had for 3 quid, won't break the bank.

Thank you very much for offering though.

Sidenote, how're you liking the GT5? I'm considering ditching my Sanwa and just getting a GT5. Love my Sanwa, but 60+ bucks for receivers is a bit meh.
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Old 07-04-2019, 09:19 PM   #8
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

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Originally Posted by m4inbrain View Post
Much appreciated mate, but if you're located in North Highlands California, and not in the north of the scottish Highlands, that wouldn't be worth the effort.

I'm based in the UK, and that reverser can be had for 3 quid, won't break the bank.

Thank you very much for offering though.

Sidenote, how're you liking the GT5? I'm considering ditching my Sanwa and just getting a GT5. Love my Sanwa, but 60+ bucks for receivers is a bit meh.
Oh, lol. I guess I could have looked under your username

It's probably the most bang for the buck you can get in a surface radio. $70 with a receiver, 6 channels, plus all the basic programming you'll need, can't really beat it. Feels pretty good in the hand too. Get some rechargeable AAAs and you're set.

I sent my Lynx 4 in for service to Hitec. I may just sell it when it comes back...
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Old 07-04-2019, 09:37 PM   #9
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

Pretty sure it's unquestionably the most bang for the buck. As long as everything operates smooth, hm. I might just get one, and if don't switch i'll have one spare for my nephew, he's starting to get to the age where RC become interesting.

Cheers. Now to figure out if i can live with the Sport Kit Body, or if it'd need to be the Defender/Bronco lol.
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Old 07-04-2019, 09:45 PM   #10
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

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Originally Posted by m4inbrain View Post
Pretty sure it's unquestionably the most bang for the buck. As long as everything operates smooth, hm. I might just get one, and if don't switch i'll have one spare for my nephew, he's starting to get to the age where RC become interesting.

Cheers. Now to figure out if i can live with the Sport Kit Body, or if it'd need to be the Defender/Bronco lol.
I've been out with mine twice and have already ordered a new body. The rack on top and all the accessories (rack, tanks, grill, light wells etc) make for a top heavy rig. I've got a standard, no frills Sport body on the way to me now.

And yeah, I'll probably end up keeping both radios as well. That was actually my original thinking when I got the thing anyway. Always nice to be able to take a friend.
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Old 07-05-2019, 03:36 AM   #11
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

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Originally Posted by punkindrublik View Post
I've been out with mine twice and have already ordered a new body. The rack on top and all the accessories (rack, tanks, grill, light wells etc) make for a top heavy rig. I've got a standard, no frills Sport body on the way to me now.

And yeah, I'll probably end up keeping both radios as well. That was actually my original thinking when I got the thing anyway. Always nice to be able to take a friend.

Which one do you have, the Defender? I've heard that it's top heavy, but i'll be honest, for the kind of trail running i'll be doing (in the beginning), that'll more than suffice.

It's my first crawler, if i stick with it and decide to throw money at it, most of it can be remedied with metal parts and new bodies anyway as far as i can tell. And of course, there's always the option to get a cheap "bash-body".
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Old 07-05-2019, 06:30 PM   #12
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Default Re: TRX4 or TRX4 Sport Kit? Help please.

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Originally Posted by m4inbrain View Post
Which one do you have, the Defender? I've heard that it's top heavy, but i'll be honest, for the kind of trail running i'll be doing (in the beginning), that'll more than suffice.

It's my first crawler, if i stick with it and decide to throw money at it, most of it can be remedied with metal parts and new bodies anyway as far as i can tell. And of course, there's always the option to get a cheap "bash-body".
No, I built the Sport kit and it comes with the cage and all the scale accessories. I just want to the sport body. The one in the kit is loaded with holes for the cage mounting, grill and light buckets. It really is kind of a heavy body.
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