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Old 04-08-2016, 10:03 PM   #1
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Default Eccentric locks

https://www.flyinmiata.com/eccentric-lock.html

Has anyone seen or used these before? I did a google search and didn't see anything on MT, but these look interesting.

These are pretty $$ (for 8), but I think it's an interesting side effect that alignments are discretized. Less fine adjustment, but repeatable, which seems cool. What I'd really like to hear is how strong they are.
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Old 04-08-2016, 11:49 PM   #2
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i have a set im installing tomorrow. i am only putting a pair in the front camber bolts as thats my biggest problem area. they are pretty stout and tolerances are pretty close but not perfect by any means.
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Old 04-09-2016, 12:35 AM   #3
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I just bought enough to do my FLCA eccentrics. Will review after a few track days.
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Old 04-09-2016, 03:51 AM   #4
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All eccentric fastener joints on our aircraft wing design use a very similar type of eccentric lock. That means these are probably going to solve the issue of the slipping eccentrics.

I'm glad someone made a custom set because the standard off the shelf parts we use cost $$$ and don't come in metric sizes.
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Old 04-09-2016, 08:55 AM   #5
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Default Eccentric locks

The Holy grail would be reproducible shims.
The problem is the small differences between the nubs on the subframes.
It's a question about making 16 different custom shim sets (or e.g. 8 sided washers).

But if you have experienced a cam bolt loosening in a corner, you would want to prevent it.

$13 does not sound bad at all, or was that each...?
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Old 04-09-2016, 09:16 AM   #6
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Quote:
Originally Posted by NiklasFalk View Post
$13 does not sound bad at all, or was that each...?
$13 each just for the locks. Just about the prices of adding new camber bolts.
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Old 04-09-2016, 08:51 PM   #7
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I just installed mine. It was a pain in the ***. There is also some play in the lock to subframe probably .2 of a degree. Tip your alignment guy after having them install these
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Old 04-09-2016, 09:52 PM   #8
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Is 16 steps enough resolution? Also, I am only seeing 8 positions. Is something offset so it can be flipped to double the number of increments?
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Old 04-09-2016, 09:59 PM   #9
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You can flip the center piece and get the other 8. Again there is a little bit of play once installed. I was able to acheive -3 camber perfectly on both sides. I think it was that these aren't really needed but more so added insurance.
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Old 02-23-2017, 11:59 AM   #10
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Any update on these? Are they lasting? Any issues?
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Old 02-23-2017, 12:19 PM   #11
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No issues. They're a little fiddly to set up, but that comes with the territory.
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Old 02-23-2017, 11:49 PM   #12
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I'd rather just use the current method of REEF the **** out of them. Or if you're just running a more normal miata and never change your alignment settings, just tack weld the adjusters in position.
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Old 02-24-2017, 01:18 AM   #13
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^thats what emilio told me to do. The alignment bolts are a wear item because they end up stretching at "tight enough"

Granted I dont race my car, but I've been on very rough roads (like broken concrete) over 1g cornering, and not had any problems. I am guessing I have 1 more alignment out of my current bolts.

Although long term, it would be better to have locking mechanisms, because the alignment bolts arent cheap.
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Old 02-24-2017, 11:44 AM   #14
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I have 8 of them waiting to go on my car before this summer. I had my alignment shift twice on track last year despite having made the bolts pretty damn tight(although to be fair I'd done a few alighenmts with those bolts and they were likely plastically deformed at that point). Missing a session to do a trackside alignment on crooked pavement isn't my idea of fun. I'm really hoping these will allow me to maintain specs without having to make the bolts concerningly tight.
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