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Re: The Shiny New AM831 Group Buy (A) Thread! I got my bolts in the mail from JJJ a few days ago. I was using the 3D printer spacers before getting these. I was pretty happy with the spacers' improvements. I  installed the bolts with washers, and gave the rear a shake. I can still get it to move, but it seems like even less than with the spacers.

Took it for an initial ride on Sunday. I'm very happy with them. I didn't really notice any rear end flex while riding. Not saying there is none now, but it wasn't noticeable to me. I am not the greatest rider and it was only one ride, but it so far so good. And I'm not a light rider at 265lbs.

I was more concerned about a creaking sound I have had since before winter. I'm pretty sure it's coming from the bottom bracket now. I'm still using the cheap provided one, but want to switch it out now. Will any BB92 bracket do? Or is there something special I need to look out for? Recommendations on a good one?
March 22, 2022, 11:22:57 AM 		1
AM831 - The flex-fix Received the new bolts yesterday, wery well made. I am still waiting for the bearings I ordered. I haven't read everything regarding the flex problem so I could use some help. Is this where the new bearing and bolt should be used?
March 23, 2022, 03:03:44 AM 		1
Re: The Shiny New AM831 Group Buy (A) Thread! Are you asking if we get the post inserted further?

Yes. Earlier in the thread many if us had this problem where it was catching on a lip in the seat tube. I had to file mine down. It took some work but I finally got it in all the way.
March 26, 2022, 03:51:59 PM 		1
Re: The Shiny New AM831 Group Buy (A) Thread! For those of you seeking for information on the bolt upgrade for the V1 rear triangle, there is a new dedicated thread started by StefanB:
http://chinertown.com/index.php/topic,3622.0.html
March 29, 2022, 09:53:49 AM 		1
Re: The Shiny New AM831 Group Buy (A) Thread!    Hello.

   Scourge, sounds like two little noises at once to me... I don't know. I'd say it could be some lateral play or space between the lower link and either the front or rear triangle. You may have a washer misplaced, missing or that they do not fill the space sufficiently. Disassemble and go checking joint by joint moving it energetically in all directions.

   The joint of the lower link with the rear triangle must be in this order from the inside (where the wheel is housed) to the outside:

                      · Screw head - lower link with its bearing installed - washer - rear triangle; so on both sides.

   At the joint with the front triangle make sure you have a washer on each side between the lower link and the frame, resting on the inner race of each bearing.

   It could also be the junction of the front triangle with the upper link; here it must be placed from the outside to the inside in this order:

                       · Screw head - upper link with its bearing installed - shaped washer with the narrow part facing the bearing (this
                        narrow part rests on the inner race of the bearing) - front triangle; also the same on both sides.

   Another option is that the bushings of the the shock are not the correct size and leave some space.

   If everything is placed correctly but there is some play somewhere, you should add some thin washers that fill the space, but without being tight, so as not to block free movement or force anything.

I hope I explained well.
March 30, 2022, 04:34:58 PM 		1
Re: AM831 - The flex-fix Replaced the bolts with new bearings today. I'm glad you posted the instructions again so that I only fastened it "finger tight".

No i can finish my built of the bike and see how it rides. :-)

Thanks JJJ for the fix.
March 31, 2022, 03:35:46 AM 		1
Re: AM831 - The flex-fix I'm posting here the production diagram of the bolt, in case others want to have it made.
You further need a pair of 10xM8 grub screws and a pair of 6703-2RS bearings.

The hex print is not mandatory, since the bolt should only be tightened "finger tight". So with a cylindrical bore instead, the bolt should be cheaper to manufacture.
April 06, 2022, 01:46:53 AM 		1
Re: The Shiny New AM831 Group Buy (A) Thread! Hello!
I finally finished building my 931 frame!
(Homemade color. I wouldn't do it again!)
This is the initial version of the rear triangle. The bearings are crimped in force. I have hope that the rigidity is given after a few kilometers.
The grommets supplied by Top-fire are not effective.
What do you use?
https://photos.app.goo.gl/NyLFK5z9ek4sCv6EA
April 08, 2022, 06:30:25 AM 		2
Re: The Shiny New AM831 Group Buy (A) Thread!    Beautiful machines you have, men!

   Scourge: I'm so glad you found the problem and it was so easy and cheap to fix! I don't know what to tell you about the torque settings of that pivot, sorry.

If you see that some screws are loosening with the use of the bike, it occurs to me that maybe you can put a little threadlocker on the threads; But be careful! If you do, use the low strength type, and be very careful to add very very little, just a droplet. If you don't do this you may break the threads or screw heads when you try to remove them or it may be impossible to remove them.

   Anyway I'm not sure if it's convenient or not to use the treadlocker in this case... maybe I'm giving bad advice, especially considering that the quality of the aluminum and the threads may not be NASA approved... Better consult a good bike mechanic who has experience on this, I don't want to be responsible for your beautiful bike being damaged :'(
April 15, 2022, 05:05:57 PM 		1