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Old 01-21-2013, 02:00 AM   #1321
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Has anyone tried running same fluid front and back?on diffs ..my car is just so sketchy , if you soften for bumps it won't stay planted in turns..I'm driving car so much harder than should to keep the pace..
I have be using 7/7 for the last few race meets. Last week I tried 5f/4r and 7f/5r they where both a little unpredictable off one of our jumps. Its a small jump that you hit with some speed and land with speed on power. This week I'll make up the spare diffs with 10/10 and try them.
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Old 01-21-2013, 02:26 AM   #1322
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I have a few brand new spare sets of front & rear towers if you want a set

PM me for a low price including shipping to you.

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have 4mm grp ones in stock as well as a bulkhead strengthener. set for 25 posted to sweden if needed

Thanks guys!

I'm thinking about creating some towers and reinforcements my self. I'll contact you if I fail and see if the deal still exists
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Old 01-21-2013, 03:00 AM   #1323
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1st full meet,,shocks leaking,,diffs leaking,,car feels ok,,but..
will try a different setup,,rear felt too stiff,,rotating too much,,does anyone know the stock rear toe-in,,kit says 3deg,,,is this fact ?,,
has anyone tried changing ackerman ?

car is quick...............yeh.............
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Old 01-21-2013, 03:08 AM   #1324
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I made my own tower braces,,exactly like the upgrade kit,but for both towers,
out of 1.4 ally sheet,,also made up some blocks to fit behind front bulkhead mounted with longer screws on the front of top deck to strengthen,and had some epic tumbles with NO breakages at all,,
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Old 01-21-2013, 07:05 AM   #1325
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I have be using 7/7 for the last few race meets. Last week I tried 5f/4r and 7f/5r they where both a little unpredictable off one of our jumps. Its a small jump that you hit with some speed and land with speed on power. This week I'll make up the spare diffs with 10/10 and try them.
What surface are you running on?
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Old 01-21-2013, 07:58 AM   #1326
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Really starting to get a feel for this car. I still need to try a stiffer sway bar and some three stripes for the front, but even still, the car is coming along great. I have been able to take the win in our last couple of club races and a couple of the other RCA drivers and I have been trying some different things as far as setup goes. I will post my current setup sheet later tonight.
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Old 01-21-2013, 12:59 PM   #1327
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Default Thanks for the set up help Andrew

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Originally Posted by Racerx336 View Post
Really starting to get a feel for this car. I still need to try a stiffer sway bar and some three stripes for the front, but even still, the car is coming along great. I have been able to take the win in our last couple of club races and a couple of the other RCA drivers and I have been trying some different things as far as setup goes. I will post my current setup sheet later tonight.
Your car looks great on the track Andrew, very balanced. After your set up ideas, my car was much easier to push harder. One thing I added was .5 up, .5 down to add more front kick up. Smoothed out the steering a little more.
I did manage to break 3 ball cups in the outer rear at the thread in part. They where 3 off kilter crashes trying to stretch for the center triple. I shouldn't have gone for it but the car was giving confidence. I think I'm going to go to 1 up, 1 down for maximum kick to see how it feels.
Thanks again.
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Old 01-21-2013, 03:24 PM   #1328
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What surface are you running on?
Hard pack clay, very dusty.

Here is a video which a club member took and its was my first run with the car.
http://www.youtube.com/watch?v=AgK_E...ature=youtu.be

Setup (not the setup in video)
http://forum.teamxray.com/xform/inde...D=22&setup=xb4
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Old 01-21-2013, 04:32 PM   #1329
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Hard pack clay, very dusty.

Here is a video which a club member took and its was my first run with the car.
http://www.youtube.com/watch?v=AgK_E...ature=youtu.be

Setup (not the setup in video)
http://forum.teamxray.com/xform/inde...D=22&setup=xb4
We have been going thinner on our diff oils with tons of positive feedback. I am currently at 5k/3k and it is the best the car has felt. The lighter the oil, the more corner speed you carry and the smoother the car feels.
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Old 01-21-2013, 05:47 PM   #1330
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It tried 5f/4r last race meet and I ended up putting the 7/7 back in.

Is your track very smooth? As in like it has just been rolled.
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Old 01-21-2013, 06:06 PM   #1331
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Originally Posted by Boz View Post
Hard pack clay, very dusty.

Here is a video which a club member took and its was my first run with the car.
http://www.youtube.com/watch?v=AgK_E...ature=youtu.be

Setup (not the setup in video)
http://forum.teamxray.com/xform/inde...D=22&setup=xb4
Car look good Chris. I just went to a 2 hole piston all around, drilled to 1.6, oil 30/25. Car was smoother but lost traction coming from a stiffer setup. What effects did you see going to 7k in the rear?
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Old 01-21-2013, 06:13 PM   #1332
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We have been going thinner on our diff oils with tons of positive feedback. I am currently at 5k/3k and it is the best the car has felt. The lighter the oil, the more corner speed you carry and the smoother the car feels.
Our track is far from smooth. We are already developing holes and ruts in multiple sections of our track and we just had a rebuild two weeks ago, it is just the nature of our dirt unfortunately. Also, our track rarely gets more than medium traction, this past weekend I would say the traction was very low for the most part. I know when I went down to 5k in the front, I instantly had a ton of initial steering and turn in. It took me a few packs to relearn braking points and when to initiate the turn because it was so different. For now, I limited my dual rate on the radio a bit and it has allowed me to really push the car without fear of turning into a pipe. Once I get the 3 stripes on the front and a stiffer front sway bar, I will gradually increase my dual rate back to 100%.
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Old 01-21-2013, 06:13 PM   #1333
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On what surface is that?
Hard packed indoor clay track. Barcode type track. It was a little too dusty for slicks in my 2wd but on my XB4 I could get away with them, didn't want to burn through tires.

Next up to try is thinner diff oils. Everything besides the shock oil/pistons I tried I've reverted back to the stock setup. Drove the car for 2 races without the front sway bar since every other buggy doesn't use it on clay, but I put it back on and it was much more consistent and easier to drive off power. So if anyone was thinking what I was thinking, just remember it's not any other buggy.
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Old 01-21-2013, 07:07 PM   #1334
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Car look good Chris. I just went to a 2 hole piston all around, drilled to 1.6, oil 30/25. Car was smoother but lost traction coming from a stiffer setup. What effects did you see going to 7k in the rear?

Thanks Tim. It looks even better on the track with the setup I posted.


The car was very balanced in the corners when using the same diff oils front to rear. It was something that I did when running a DEX410. I went down to the bottom hole on the rear shock tower which helps with the rear traction.

The 30 in your front shocks may be a little light (but I will try it one day). What brand of oils are you using?
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Old 01-21-2013, 07:39 PM   #1335
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Thanks Tim. It looks even better on the track with the setup I posted.


The car was very balanced in the corners when using the same diff oils front to rear. It was something that I did when running a DEX410. I went down to the bottom hole on the rear shock tower which helps with the rear traction.

The 30 in your front shocks may be a little light (but I will try it one day). What brand of oils are you using?
Yep 30 is way to light with the 1.6 pistons. The track that I tried that with is VERY bumpy, car is almost never solid on the ground. It felt better with the soft, no pack setup, but on the clock was about .5 sec a lap slower. I guess it would never put any weight to the tires so I lost traction everywhere it seemed. The oil is ae so just a bit heavier than cst. The car rotates very well but I tend to get back on the power to fast making it just to free for me on exit.
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