333LikesXray XB2 2WD Buggy Thread
05-04-2019, 06:44 PM - Wikipost
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04-14-2016, 09:42 AM
#2656
Fair enough point. Ive owned the rb6, 22 2.0, b5m ect ect and broken parts on them all. The xb2 has been just as tough if not more so than my previous rides.
My theory is that there was either a bad batch of aluminum. And yes, the rear hanger would have probably been better off with a stock setting of 1 deg anti squat and 3 deg of toe.
My theory is that there was either a bad batch of aluminum. And yes, the rear hanger would have probably been better off with a stock setting of 1 deg anti squat and 3 deg of toe.
carpet tracks, while some may think they have a carebear surface, usually concrete under the thin ozite. some of the photos that were posted just pages shows racers on carpet surfaces with the same issue
04-14-2016, 09:43 AM
#2657
imo....the problem with the rear carrier is the eyelet lobe for the bushings are too low. they hit the track surface before the chassis on flat landings, actual dirt tracks they start wearing down before the chassis, when they wear even with the chassis they still hit at the same time. either way stress transfers to the thinner part of the carrier where mount point is. the carrier bends or break in a shear which is visually unique to aluminum or bend
carpet tracks, while some may think they have a carebear surface, usually concrete under the thin ozite. some of the photos that were posted just pages shows racers on carpet surfaces with the same issue
carpet tracks, while some may think they have a carebear surface, usually concrete under the thin ozite. some of the photos that were posted just pages shows racers on carpet surfaces with the same issue
04-14-2016, 10:31 AM
#2658
It is my opinion that this isn't a design flaw but rather just a weak link in the design. The XB4 hangars were a flaw. I'm sure XRAY will make revisions in the next model (if not sooner) because they always address weak links in their cars. The first step however is admitting there is an issue.
04-14-2016, 10:36 AM
#2660
Just ordering a couple will always be expensive as you have to spread the cost of programming the g code program + tools + time for setting it up + the jig to hold the job.
At 75$ a piece I would consider making it a tad thicker where it breaks but more importantly I'd ask ask for a high grade steel one. That would last a while.
At 75$ a piece I would consider making it a tad thicker where it breaks but more importantly I'd ask ask for a high grade steel one. That would last a while.
04-14-2016, 10:50 AM
#2661
imo....the problem with the rear carrier is the eyelet lobe for the bushings are too low. they hit the track surface before the chassis on flat landings, actual dirt tracks they start wearing down before the chassis, when they wear even with the chassis they still hit at the same time. either way stress transfers to the thinner part of the carrier where mount point is. the carrier bends or break in a shear which is visually unique to aluminum or bend
I also shimmed mine up by .5mm front and back, and I filed some material off the bottom to give a little more clearance. Hopefully it will last through the weekend.
04-14-2016, 11:48 AM
#2662
imo....the problem with the rear carrier is the eyelet lobe for the bushings are too low. they hit the track surface before the chassis on flat landings, actual dirt tracks they start wearing down before the chassis, when they wear even with the chassis they still hit at the same time. either way stress transfers to the thinner part of the carrier where mount point is. the carrier bends or break in a shear which is visually unique to aluminum or bend
carpet tracks, while some may think they have a carebear surface, usually concrete under the thin ozite. some of the photos that were posted just pages shows racers on carpet surfaces with the same issue
carpet tracks, while some may think they have a carebear surface, usually concrete under the thin ozite. some of the photos that were posted just pages shows racers on carpet surfaces with the same issue
04-14-2016, 02:15 PM
#2663
I'm surprised there's so much talk of rear hangers and so little about ball diffs. I thought my bad ball diff was a fluke because it came to me assembled wrong, but every other XB2 I've felt has had a bad diff. It feels like the rings aren't flat. Bind, free, bind... Just makes the rear end completely unpredictable.
It's hard to imagine it's an uncommon problem when I've observed a 100% incidence rate in the handful of local samples.
It's hard to imagine it's an uncommon problem when I've observed a 100% incidence rate in the handful of local samples.
04-14-2016, 02:22 PM
#2664
My balls feel great!
04-14-2016, 02:26 PM
#2665
I haven't had any of these issues but if you're having problems with the hanger shimming it up would make sense, just adjust for the higher roll center. I was actually just about to shim my hangers up as I want to run the highest roll center and 3.5* of rear toe.
I was running relatively stiff rear spring and it was awesome, but I realized I could raise the roll center at the arms and run a softer rear spring to get the roll characteristics I wanted with faster weight transfer out of the corners.
I was running relatively stiff rear spring and it was awesome, but I realized I could raise the roll center at the arms and run a softer rear spring to get the roll characteristics I wanted with faster weight transfer out of the corners.
04-14-2016, 02:27 PM
#2666
I'm surprised there's so much talk of rear hangers and so little about ball diffs. I thought my bad ball diff was a fluke because it came to me assembled wrong, but every other XB2 I've felt has had a bad diff. It feels like the rings aren't flat. Bind, free, bind... Just makes the rear end completely unpredictable.
It's hard to imagine it's an uncommon problem when I've observed a 100% incidence rate in the handful of local samples.
It's hard to imagine it's an uncommon problem when I've observed a 100% incidence rate in the handful of local samples.
04-14-2016, 02:37 PM
#2667
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My diff is a little crunchier that I thought it'd be. I've noticed deep grooves in my diff rings, never have I seen such deep grooves on other diffs. I flipped them and it was resolved but I also think running a slipper eliminator sped up the wear and tear. I did try a gear diff just for kicks and it had so much more punch, thought my diff may be slipping but not barking.
Do any other diffs rings fit this xb2 diff? Looking to try other diff rings and balls.
Do any other diffs rings fit this xb2 diff? Looking to try other diff rings and balls.
I'm surprised there's so much talk of rear hangers and so little about ball diffs. I thought my bad ball diff was a fluke because it came to me assembled wrong, but every other XB2 I've felt has had a bad diff. It feels like the rings aren't flat. Bind, free, bind... Just makes the rear end completely unpredictable.
It's hard to imagine it's an uncommon problem when I've observed a 100% incidence rate in the handful of local samples.
It's hard to imagine it's an uncommon problem when I've observed a 100% incidence rate in the handful of local samples.
04-14-2016, 02:48 PM
#2668
I got an email back from exotek.
A new hanger has been designed, and will be ready in 3 weeks. Mike is TREMENDOUS, and took my offset suggestion into the design as well. In this situation, he will build it so the centered bushings in front and rear will give 3 degrees of toe instead of the 4 degrees the stock hanger has built in.
This is HUGE for the high grip guys looking to free the car up and gain more corner speed.
A new hanger has been designed, and will be ready in 3 weeks. Mike is TREMENDOUS, and took my offset suggestion into the design as well. In this situation, he will build it so the centered bushings in front and rear will give 3 degrees of toe instead of the 4 degrees the stock hanger has built in.
This is HUGE for the high grip guys looking to free the car up and gain more corner speed.
04-14-2016, 02:52 PM
#2669
What I also like about getting the native toe cut down to 3, is we can switch to the narrow or wide pivot/track, and not have the insane 4 degrees built into the OEM hangers.
This will also give the hanger less exposure to the ground when landing, as the outboard portion will be pulled in.
This will also give the hanger less exposure to the ground when landing, as the outboard portion will be pulled in.
04-14-2016, 03:47 PM
#2670
I got an email back from exotek.
A new hanger has been designed, and will be ready in 3 weeks. Mike is TREMENDOUS, and took my offset suggestion into the design as well. In this situation, he will build it so the centered bushings in front and rear will give 3 degrees of toe instead of the 4 degrees the stock hanger has built in.
This is HUGE for the high grip guys looking to free the car up and gain more corner speed.
A new hanger has been designed, and will be ready in 3 weeks. Mike is TREMENDOUS, and took my offset suggestion into the design as well. In this situation, he will build it so the centered bushings in front and rear will give 3 degrees of toe instead of the 4 degrees the stock hanger has built in.
This is HUGE for the high grip guys looking to free the car up and gain more corner speed.