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Old 12-28-2013, 11:29 AM   #3676
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Originally Posted by big chris View Post
Any of you super smart guys know all the part numbers to convert a XRAY xb4 2wd to the XB4 2014?
361160 1
364170 1
902305 1
361100 1
364900 1
365420 1
365230 3
980210 3
365440 1
365470 3
940510 1
940815 1
365114 1
902306 1
365320 2
980210 4
365240 2
940510 2
940512 2


I think that should be it..
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Old 12-28-2013, 11:43 AM   #3677
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I'm looking for some advice guys. Let's start off by saying this car ( 2013 xb4) is real good and consistent compared to many of the other 4wds if owned. I am currently running the Martin Bayer setup on high bite clay track. The only changes I have to the suspension are avid pistons (1.6front and rear) and associated green rear spring.
The complaint I have about this car is it jumps horrible. It is a constant situation of either having to bring the nose down in the air or gassing it to bring it up to level things out. Now before people jump on me and tell me how to drive\jump, I am not a rookie and my original racing roots are from 1\8th scale nitro which requires much more jumping ability and control in the air. I almost wonder if the strong points of this car driving a lot like a sedan which I believe is partly because of the lack of droop are its weakness when it comes to jumping and landing. The best way I can describe it is some cars are very "cat like", meaning they tend to want to level out and land nice on all fours. Has anyone else had this complaint that has found a way to make it jump better.
We had the same issue when we got our kit and it was configured with two hole pistons it was improved a lot when we switched to the three hole set up. Obviously it should be possible to make it work with a two hole configuration, but this was the solution for us. I have since gone to the 2x1.1 + 2x1.6 configuration in the rear, and it still jumps well.
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Old 12-28-2013, 12:11 PM   #3678
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Hoby, are you racing on Thursday? If so lets swap cars and I want to see what's going on with yours
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Old 12-28-2013, 09:18 PM   #3679
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What starting setup would you guys recommend for medium bite smooth clay??
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Old 12-29-2013, 05:10 AM   #3680
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We had the same issue when we got our kit and it was configured with two hole pistons it was improved a lot when we switched to the three hole set up. Obviously it should be possible to make it work with a two hole configuration, but this was the solution for us. I have since gone to the 2x1.1 + 2x1.6 configuration in the rear, and it still jumps well.
check to see if your axles are plunging too far into the diff cups on full compression. i have a 2014 and it jumps perfect. so good i dont even care how i hit a jump but one jump if i undershoot it and land just on the downhill crest the car goes crazy and flips over and barrel rolls. i think the axles were binding the diff cups and locking up at the same time the rear chassis slaps the ground. i changed the offset plastic bushings to the dot out position so my track is wider and now the axles wont bottom out. havnt tried it yet but im gonna go today and hit that jump the same way and report back.

ok just got back and now i can land that jump anyware i want to and it lands perfect. problem solved.

Last edited by auto2; 12-29-2013 at 08:33 AM.
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Old 12-29-2013, 10:44 PM   #3681
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Originally Posted by ps71 View Post
I think that should be it..
Thanks.
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Old 12-30-2013, 06:08 AM   #3682
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Anyone have a setup for low bite? Car has plenty of steering but the rear wants to come around on power. Running the kit setup, also tried 1 dot rear springs not much better.
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Old 12-30-2013, 07:22 AM   #3683
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Anyone have a setup for low bite? Car has plenty of steering but the rear wants to come around on power. Running the kit setup, also tried 1 dot rear springs not much better.
is this the 2013 car or the new one? removing the composite piece on the old chassis and dropping the trans onto the aluminum made quite a difference. you may want to try that. you need to remove the carbon shim from the front of the bulkhead mount as well. the stock screws all still fit just fine.
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Old 12-30-2013, 07:36 AM   #3684
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Originally Posted by mjk1210 View Post
is this the 2013 car or the new one? removing the composite piece on the old chassis and dropping the trans onto the aluminum made quite a difference. you may want to try that. you need to remove the carbon shim from the front of the bulkhead mount as well. the stock screws all still fit just fine.
It's the new car. I also think part of the problem is I installed the carbon battery straps and that made the rear of the car stiffer. I thought if you took the spacer out in the back the +2 rear mounts were required to make it work.
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Old 12-30-2013, 08:03 AM   #3685
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Does anyone know if the new wider offset front wheels are a running change or a different part number? I looked at the exploded view and it seemed to be the same part number. I want to get some new wheels but would like to keep the offset the same as the 2013 wheels.
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Old 12-30-2013, 09:39 AM   #3686
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Running change. Same part #
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Old 12-30-2013, 02:30 PM   #3687
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Originally Posted by mjk1210 View Post
is this the 2013 car or the new one? removing the composite piece on the old chassis and dropping the trans onto the aluminum made quite a difference. you may want to try that. you need to remove the carbon shim from the front of the bulkhead mount as well. the stock screws all still fit just fine.
What did u do with the bushings setup?
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Old 12-30-2013, 04:02 PM   #3688
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What did u do with the bushings setup?
kept the stock hangers and martin bayer setup.
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Old 12-30-2013, 04:53 PM   #3689
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kept the stock hangers and martin bayer setup.
Awesome I will try that, bc I don't think those +2 holders work.
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Old 12-31-2013, 01:45 AM   #3690
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The Xb4`14 is amazing, and very easy to drive!! Lets see how it holds up :-)
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