06-07-2020, 12:26 PM | #1 |
Newbie Join Date: May 2020 Location: Leeds
Posts: 11
| Top Heavy TRX4
I know it is a common problem with the Trx4 Land Rover, being top heavy. But is there a solution to stop it being so? Would be much appreciated for advice, as sick of the ‘walk of shame’ to turn it the right way up! |
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06-07-2020, 01:17 PM | #2 |
RCC Addict Join Date: Nov 2017 Location: Austin Texas
Posts: 1,615
| Re: Top Heavy TRX4
Lightening the weight on top- I removed my cargo rack altogether as well as the spare tire/ carrier out back. That helped. Adding weight down low... as low as possible- low COG battery tray, steel or brass portal covers, c-hubs, etc.. Widen the track width- You might try a wider offset wheel hex. That can help ( a bit) to keep the vehicle a little more stable while side-hilling. Tire foam- A softer foam may help depending on trail conditions, terrain, etc. Springs- In conjunction with the "right" foams, a firmer or softer spring may help with weight distribution. The one thing to keep in mind is that you don't want to add TOO much weight. There's a good balance somewhere with your rig... top to bottom/ front to back. |
06-08-2020, 12:40 PM | #3 | |
Rock Crawler Join Date: Feb 2020 Location: Fort Leonard Wood
Posts: 868
| Re: Top Heavy TRX4 Quote:
If you don't want to be top heavy get a lexan body. If you want to keep the Defender get a dermal. Even then it will be top heavy. | |
06-08-2020, 04:11 PM | #4 |
Rock Crawler Join Date: Mar 2016 Location: Murphy
Posts: 718
| Re: Top Heavy TRX4
It's a trade off but I think I would start by getting some steel bead lock wheels to add some low weight that isn't sprung. The next thing I would try would be brass portal covers.
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06-11-2020, 01:04 PM | #5 |
Rock Crawler Join Date: Apr 2020 Location: Drums
Posts: 572
| Re: Top Heavy TRX4
I've done brass portal covers front and rear, brass portal knuckles front, steel wheels, stiffer foams, better tires and the Bowhouse lower CG battery tray. Can't believe the difference it all made. All the brass stuff I got was was from Benedict Harry on Amazon. It all went together very well. Only had to use the Dremel drum on one part to open up the bearing area to make it a little easier to get it out down the road. Overall very happy and the cost was substantially lower than the brand name brass. Oh, I also went to a 9T motor pinion gear since I added the weight.
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06-11-2020, 02:04 PM | #6 | |
Rock Crawler Join Date: Feb 2020 Location: Fort Leonard Wood
Posts: 868
| Re: Top Heavy TRX4 Quote:
That way above you keep the TRX4 body. I went the opposite route. I weigh less than 8lbs but I don't have the looks a Defender has. | |
06-11-2020, 02:54 PM | #7 |
Rock Crawler Join Date: Apr 2020 Location: Drums
Posts: 572
| Re: Top Heavy TRX4 |
06-11-2020, 08:21 PM | #8 | |
Quarry Creeper Join Date: Dec 2019 Location: California
Posts: 375
| Re: Top Heavy TRX4 Quote:
Lowering the battery tray or switching to a lighter battery will help, but not a significant amount to weights. Stiffer or dual-stage foams will also help during sidehilling, and stop the tire's sidewall from collapsing as easily, but that involves taking apart and reassembling the wheels, which is a pretty hard task if you have glued and not deadlock wheels. The most effective option that I see is swapping out the body, but I know some people really like the defender body, and would like to keep it. | |
07-03-2020, 07:25 PM | #9 |
Pebble Pounder Join Date: Jul 2020 Location: Dade City,Fl
Posts: 180
| Re: Top Heavy TRX4
Changing the approach angle really helps. The bumpers are too wide and low. I flipped my bumper mounts up. Trimmed and shortened bumpers. Trimmed the body shorter. You can turn the body into a pickup also. My tires touch the rocks before my bumpers do now.
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07-03-2020, 09:22 PM | #10 | |
RCC Addict Join Date: Aug 2017 Location: Fredericksburg, VA
Posts: 1,912
| Re: Top Heavy TRX4 Quote:
Mount a Sport body on it or find an aftermarket body that you like. | |
07-07-2020, 05:02 PM | #11 |
Pebble Pounder Join Date: Jul 2020 Location: Dade City,Fl
Posts: 180
| Re: Top Heavy TRX4
Took a photo today. This will do everything I need it to do. Weighted all 4 wheels with car wheel weights. Added 4 more for each front. Made my own foam inserts from shipping foam for Bio Med equipment.
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08-20-2020, 09:46 AM | #12 |
Newbie Join Date: Aug 2020 Location: Genesee County
Posts: 13
| Re: Top Heavy TRX4
The best solution that I have seen is a combination approach depending on your needs. THE best body mod I have seen is the one by " LifeWith BillSiff " on youTube. It's excellent. I watched quite a few vids on the brass weight mods & my conclusion is : they are great for going up stuff & climbing, but going down hill.....not so much. Many will flip forward & endo because of the weight, which is why I said depending on your needs. |
09-28-2020, 08:10 PM | #13 |
Newbie Join Date: Nov 2011 Location: kansas
Posts: 33
| Re: Top Heavy TRX4
I added a bunch of weight up front and it flips forward!
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09-30-2020, 01:14 PM | #14 |
Rock Crawler Join Date: Apr 2017 Location: US
Posts: 639
| Re: Top Heavy TRX4 Even though the thread is a little old. What was the decision on the body problem?
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09-30-2020, 07:19 PM | #15 |
Newbie Join Date: May 2020 Location: Cumming
Posts: 39
| Re: Top Heavy TRX4
Modifying the body and weight down low helped this truck a lot.
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10-02-2020, 10:29 PM | #16 |
RCC Addict Join Date: Aug 2014 Location: Virginia, Near DC, USA
Posts: 1,607
| Re: Top Heavy TRX4
Remove the spare tire from the back and the luggage rack from the top. Then buy some STRC brass portal-gearbox housings to make the axles heavier. Beadlock wheels with steel rings are also a good step. That's pretty much everything I did to my TRX-4 Defender to keep it from rolling over. Also, remember the TRX-4 has unlockable diffs -- make sure to actually use them. Run the diffs unlocked unless you need them, and you'll minimize truck-rolling torque twist. |
10-02-2020, 10:46 PM | #17 | |
RCC Addict Join Date: Aug 2014 Location: Virginia, Near DC, USA
Posts: 1,607
| Re: Top Heavy TRX4 Quote:
But yes, I agree brass portal gearbox housings are an important investment for the TRX-4 Defender -- or any TRX-4 or TRX-6 for which you want to minimize rollovers. | |
10-02-2020, 10:50 PM | #18 |
I wanna be Dave Join Date: Jun 2020 Location: The Big Island
Posts: 2,010
| Re: Top Heavy TRX4 |
10-02-2020, 10:54 PM | #19 |
RCC Addict Join Date: Aug 2014 Location: Virginia, Near DC, USA
Posts: 1,607
| Re: Top Heavy TRX4
Thanks. I wish I could take credit for it, but I used a 3D-printed rear "equipment rack" from Shapeways.
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10-03-2020, 01:05 AM | #20 | |
I wanna be Dave Join Date: Jun 2020 Location: The Big Island
Posts: 2,010
| Top Heavy TRX4 Quote:
Nice I’ll have to take a look at that Sent from my iPad using Tapatalk Last edited by ScaleLifeNewbie; 10-04-2020 at 01:04 PM. | |
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