As the title says, I'm having trouble assembling the chassis of a RC helicopter. I've attached a screenshot of the problem and the file. I think the problem may lie with the dimensions of the landing arm, but I'm not quite sure.
21 is not equal to 21.00374008
You only included the assembly file. We can't open it without the parts. Please see #15 and #16 here: Forum Posting . Just looking at the screenshot I'd guess that the hole spacing between the two parts isn't exactly the same. Even a very small amount will prevent you from having two concentric mates.
Sorry about that. I've attached the files for the other parts. And yes, I think something is wrong with the dimension, but I already checked them and can't find anything wrong. Maybe you can
Simon, your answer is already here (read down further). You can't see it because with your units set to two decimal places everything rounds to 21 but if go into "option", "document properties", "units", and change the precision of the lenth to at leats three and your answer will show up, go to eight and you could see it even if the error between the two was 0.00000001
what Glenn said, or, based on what I see in your .png file, it looks like possibly you have already applied one concentric mate to the upper pin, ???, is it possible that you clicked on the "lock rotation" check box for that first concentric mate. In other words will your landing arm rotate freely about that first concentric mate, if not edit that mate and make sure the lock rotation is unchecked.
Yes, my landing arm does rotate freely. So I don't think that is the problem.
what Glenn said never mind the "or"
your landing arm measures 21.00374008 c to c
your chassi measures 21.01927687
something that will help you a lot is if you put your initial part in with the existing front/top/right planes in mind, that way when you do try to measure someting you don't get these oddball XYZ direction vectors
As Glenn figured the distance between centers is not the same.
Ok, I finally got it. After tinkering around with some of the measurements, the distance between the two holes is finally exactly 21mm. Thanks for all the help everyone!
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