cybrsrce AM831 build

[Maffly]

Hey cybrsrce, I take it from your other post that you are not feeling like your bushings have created enough support to the link to make the ride quality acceptable. Mine feels good in the garage but have not had it out yet.  Are you planning to return the frame?

[JJJ]

Nice work JJJ. only thing I would say is that the bearings from the outside would work. Yeti does this for example.

Provide a pic! I tried to figure that out but came to the same issue, reversed.

[Maffly]

Tried to attach but have not done it before hope it works.

[JJJ]

Tried to attach but have not done it before hope it works.

Works. So what prevents the bearing from sliding outward when the eyelet shifts inward in compensating the (necessary) clearance between the eyelet and the link?

[Maffly]

Bearings actively pressed in to the carbon at all times as opposed to essentially floating in there.

[JJJ]

Bearings actively pressed in to the carbon at all times as opposed to essentially floating in there.

A pressed bearing will eventually come out if there is repeated axial force tending to pull it out. No serious assembly leaves a pressed part unsecured. You need something securing the bearing in its recess, like a retainer ring, otherwise it's the same story as for the 831.

[Maffly]

What is Yeti doing t make this work?

[JJJ]

What is Yeti doing t make this work?

"Bearing keepers" that screw over the bearings in their recesses https://nsmb.com/media/images/yeti-sb150-bearing-swap-2.original.jpg
Source https://nsmb.com/articles/yeti-sb150-bearing-swap-how-and-how-not/

[Maffly]

Nice. Does not look like there is much hope for this frame. We might have to start working on refunds/returns

[JJJ]

There's this fix, with a new screw design: http://chinertown.com/index.php/topic,3172.msg32504.html#msg32504

[hagerd]

I think a solution can be found. I think moving the bearings to the link similar to the SC design (referencing JJJs drawings), then using custom bushings and spacers to convert the design to thru bolt similar to SC is the way to go. This would require the seller to replace the link and supply hardware. That is if they even want to fix it. I'm a mechanical designer and have access to CNC machine tools at work. Once I get my frame Ill be trying to fix this myself. I really wish I had ordered the ICAN P9 right now....

[Maffly]

Or try to stop the order.

[deucelee]

Guys, a couple questions.

1.) When did this new design come out? i.e. if mine was being shipped in the last month or so, should it have the new design w/o this problem? j/w if anyone knows.

2.) Has anyone tried to resolve this with Haideli yet?

thanks,
deuce

[hagerd]

All of them will have this problem

[FullCarbonAlchemist]

Eddy said they changed the carbon layup to “fix” this issue, but AFAIK nobody’s received the updated rear triangle yet and from everything I’ve been reading in the 831 threads, taking up the gaps in the upper pivot won’t fix the problem alone. It sounds like a completely new and different upper link would be required with better bearing shells and shields/retaining clips.