Originally Posted by
suby723
I know! I Braught this up with Bent but he just pulled a jerk move and said it was my fault for not using loctite. I'm glad others think this issue is also clearly a weak point. I am a local club expert level driver, I have never broke a part minus this on the xb2. Bottom line is that this should be a part that should not break. Rc America made things right and is replacing the part for a discounted rate but now I am also going to carry a backup rr hanger.
Jerk move ? All I did was post a similar image to what you posted showing our screw with clear Loctite residue. I find it odd that when you post your picture it's perfectly fine and when I remove one from our XB2 to show it's described as a jerk move
And you must be a much better driver than all of us on the team. For the past 2 years with 20-30 prototypes and pre-production cars running full time on the track we've not broken a single hinge pin holder but tons of suspension arms, uprights, front chassis upper and lower parts, bent hinge pins and broken hinge pin inserts.
And we still break parts on the production cars we are running now
Originally Posted by
avaldes
Deploying a product to the consumer will expose weaknesses that the design team had not considered. It happens to every product. I am constantly amazed at ways the users find to break the systems that I design. It is because engineers and users think a little differently and operate things differently.
It shouldn't be hard for Xray to trace the root cause of this issue. Be it a poor lot of raw material, an actual defect in the part, or a design without enough margin. I'm sure they will do the right thing.
Xray representatives watch both the threads on here and the groups on Facebook.
And I also report back on finds and issues.
Jusy like this issue have been discussed.
Originally Posted by
suby723
I sure hope they keep an open mind about it and get to the bottom of the issue instead of just pointing the finger back at us. I follow the xb2 group on fb closely and I have seen at least 10 people break them. All said the exact same.. Had no idea why it broke and never once happened during a crash.
I fully understand you are disappointed you have broken a part on your new XB2 but making up numbers to back up your case doesn't really make it look any better.
I'm the one administrating the groups on Facebook and including your issue we've had 4 in total, not 10.
Originally Posted by
Cpt.America
That would certainly point towards there being a materials or engineering issue. And selling you another part at "a reduced rate" would be inappropriate. We will see what I get when I start running the car (dirt). I ran my B5m for almost 2 years and didn't break one-single-part. I would imagine that the Xray would be even MORE durable.
The cause of the fracture has been identified as the screw coming loose when not using Loctite which will cause stress to the part each time you land and your chassis bottoms out pushing on the loose screw.
The solution is to use Loctite on the screws to make sure they don't come loose and protrude through the chassis.
However I'm not saying that for a future release there could be a revised version of the hinge pin holder to make it withstand the stress from a screw coming loose.
But for the moment the solution is to use Loctite to make sure they stay in place.
Bent