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Re: Chinese Carbon 29er Pic Thread. My P9 large with fox 36 180mm travel
July 06, 2021, 07:45:18 AM
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Re: The Shiny New AM831 Group Buy (A) Thread! Full bicycle picture attached,.
August 25, 2021, 10:06:24 PM
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Re: The Shiny New AM831 Group Buy (A) Thread! Attaching a picture of my finished build. This frame size is "S".
Only the bottom cage is missing and I haven ridden it yet, apart up and down the street to tune suspension and saddle height.

Some interesting parts of my build:
  • assembling the lower pin of the rear shock was challenging, as I could not find any position of the rear triangle that gave me enough clearance to remove the bolt. I ended up unscrewing the top hinge form the frame (removing the 2 bolts just under the saddle). Not sure if that was the best choice because repositioning the hinge wasn't easy, but it worked
  • my mounting hardware for the shock was M8x30 and M8x22.199. The x30 (top) fit perfectly, the x22.199 was loose: i measured 22.86mm for the opening. Rather than ordering a new one, I 3d printed 2 spacers, which seem to work well
  • My shock is a Fox dpx2. It fits pretty well, but the access to the air valve is tight, I can barely connect my pump to the valve.
  • I used a Fox36 fork, that barely clears the frame, after using the 0.5 degree angle spacer from Reverse, which is about 10mm tall. BTW, jham asked about installing the angle spacer: it is an "interference fit", just like a standard crown race. I used a piece of PVC pipe with id of about 1.5" to push it down, with the help of a rubber mallet

As for my component list, most of them are reused form other builds or both 2nd hand:
  • fork: Fox36 w/ GRIP2 damper. The damper adjustments barely clear the frame even after adding the angle spacer
  • rear shock: Fox dpx2, see my comments above for the mounting hardware
  • drivetrain: SRAM Eagle GX, with SRAM DUB 89/92 pressfit bottom bracket
  • wheelset: Lightcarbon 350MB-AD938-Race, shared with my other frame
  • breakset: Shimano M8200, which I got new at a good price form a seller on Pinkbike. The rotors are generic from Amazon (https://www.amazon.com/gp/product/B082NVF3TD/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1)
  • dropper post: and old Tranzx 31.6x140. I pushed it all the way down the downtube.. and it still might be too high, I need to double check it, but I have not measured the insertion depth
  • saddle: a SDG Radar.. I have no idea of how good or comfortable it is, I got it at a discount because my other SGB Bel Air failed, but I have to say that I like a lot my WTB Volt on the other bike
  • stem and Carbon Handlebar: inexpensive from Amazon (https://www.amazon.com/gp/product/B0916YJ81R/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1 and https://www.amazon.com/gp/product/B07JPF4T71/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1)
  • headset and Sitclamp: I used the one that came with the frame. The frame also came with 4 cable hole plugs, for the larger holes by the bottom of the downtube. They are rubber, not easy to install. Not sure if they will hold
  • missing: chainstay (and maybe downtube) protection. I have something that might work, but I haven't tried to install it yet.

I hope this is helpful to others..

August 29, 2021, 09:25:32 PM
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Re: The Shiny New AM831 Group Buy (A) Thread! After being out of town, waiting for parts, and finding the time. I was finally able to finish the build up today. Hopefully I can get it in some dirt soon.
September 04, 2021, 09:32:25 PM
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Re: The Shiny New AM831 Group Buy (A) Thread!
Gentlemen,

Do we need any disc brake adapter for this frame?  I believe it is rated for 180mm disc.  As such, is the brake adapter required?  Thank you for your confirmation advance. 

For example:  https://www.aliexpress.com/item/1005002284268224.html?spm=a2g0o.productlist.0.0.21c12b80IzDeqZ&algo_pvid=5835006c-dce4-43c1-a71f-1dc7723c2d37&algo_exp_id=5835006c-dce4-43c1-a71f-1dc7723c2d37-0&pdp_ext_f=%7B%22sku_id%22%3A%2212000019910969372%22%7D

hi man if you gonna be using a 180 mm rotor for your rear brake then you wont have to get an adapter

I'm intended to mount the Shimano M8120 brake to the frame.

Would anyone who completed the bike can share with me the image of your brake setup?  Thank you for sharing the info with me.

Bsam.

hi man if you are gonna use a 180 mm rotor for your rear brake then you wont not require an adapter.
if your question is if you need an adapter to run 4 pot brakes, you do not need an adapter. Both 4 pot brakes and 2 pot brakes share the same mounting.

that being said i have not assembled mine

September 29, 2021, 01:24:08 PM
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Re: The Shiny New AM831 Group Buy (A) Thread!
Would you mind to share with us what you used for the chainstay protector?  looks like a sticky back type.  Thanks.

The chainstay protector is for a Nukeproof Mega 29.

October 12, 2021, 02:44:08 PM
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Re: The Shiny New AM831 Group Buy (A) Thread!
Gentlemen,

Anyone completed the build with the crown spacer to prevent the front fork from hitting the downtube?  I'm quite confused on what we should use;  +0.5° crown spacer?  My fork hit the downtube (Frame Size S).  The rated head tube angle is 65.5° -  This would make 65° with the crown spacer?  I assumed the headset uses 45 degree bearing race. 

https://reverse-components-usa.com/products/reverse-angle-spacer



Most of the forks hit the downtube; a 3 mm can creek with zero change in head angle does the job; remember to change the bearing too to one with 36/45 degrees

October 12, 2021, 03:46:05 PM
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Re: The Shiny New AM831 Group Buy (A) Thread! Yes, of course, BSAM.



+++ First the +6mm spacer (Reference number: BAA1078K):

      Offical site= https://canecreek.com/product/6mm-52-40mm-alloy-crown-race-baa1078k/
      * Strangely, they don't have a photo of the piece on their website.

      https://www.bike24.es/productos/315770
      *Do not trust the image placed on this website, it does not correspond to the real piece, probably because on the official page
      they do not have a photo of the spacer, so they have put a photo of a regular crown race.

      https://www.universalcycles.com/shopping/product_details.php?id=93742

      https://www.modernbike.com/cane-creek-40-series-crown-race-52-40-steel-1.5-6mm

      https://www.dirtworksb2b.com.au/0-series-6mm-rise-crown-race-52-40-36-deg-fits-can

      https://www.ebay.com/p/4025434942

      http://www.bikeman.com/BTI-DC2071.html

      https://www.bikeparts.com/BPC181140/cane-creek-40-series-crown-race-(52-40)-steel-15%22-(-6mm)



+++ Now the bottom bearing * Be careful, very important= 36ºx45º!!!:

      +The expensive one (Reference number BAA1055):

               https://www.bike24.es/productos/276765

               https://www.bikeshop.es/rodamiento-de-direccion-cane-creek-hellbender-aa-5-52-mm-36-x45-inox-baaaa-55/171077.html

               https://www.alltricks.com/F-201990-roulements/P-1726115-cane_creek_hellbender_1_5___39___39__52mm_36x45____steering_bearing

               https://www.amaincycling.com/cane-creek-hellbender-bearing-36-x-45-52mm-shis-baa1055/p-2uqxsxwqdtqzwdwz

               https://www.airevelobearings.com/product/52mm-baa1055-cane-creek-hellbender-stainless-steel-mh-p25k-ss/

      +The expensive one with a crown race with rubber seal that will not be used if the spacer is fitted (Reference
         number BAA0143):

                https://www.bikeshop.es/cane-creek-juego-de-direccion-integrada-aaaa-aa-5-cazoleta-baja-is52-negro/80798.html

                https://r2-bike.com/CANE-CREEK-Steuersatz-Unterteil-110IS52-Bottom_3

                https://www.performancebike.com/cane-creek-110-bottom-headset-is52-40-baa0143/p-fqhrs4fc5eqetqhe?v=313846&avad=158767_d24b01989

                https://www.ebay.com/itm/Cane-Creek-110-Series-Headset-Bottom-Hellbender-Integrated-S52-40-Black-BAA0143-/324378776312

                https://www.bikebug.com/cane-creek-110-series-is52/40-headset-bottom-assembly---baa0143---black.html

      +The cheapest one (Reference number BAA1132):

                https://www.alltricks.es/F-201990-roulements/P-655625-cane_creek_40_series_bearing_36x45___52mm

                https://www.bikeshop.es/rodamiento-de-direccion-cane-creek-zn-4-aa-5-36-45-52-mm-baaaaaa32/167933.html

                https://www.modernbike.com/cane-creek-zn40-bearing-52mm-zinc-plated-each

                https://www.bearingsrus.co.uk/bearings/bike-bearings/cane-creek-baa1132

                https://www.airevelobearings.com/product/52mm-cane-creek-baa1132-mh-p25k/

      +The cheapest one with a crown race with rubber seal that will not be used if the spacer is fitted (Reference
         number BAA0086):

                https://www.bikeshop.es/cane-creek-direccion-integrada-forty-aa-5-cazoleta-baja-is52-negro/80809.html

                https://www.amaincycling.com/cane-creek-40-bottom-headset-is52-40-baa0086/p-2eaxh3rqvt2bsdwz?v=313800

                https://www.amazon.co.uk/Cane-Creek-40-Series-baa0086-IS52-Headset-Black/dp/B004JKJTX6

                https://www.worldwidecyclery.com/products/cane-creek-40-is52-40-bottom-headset-black

                https://www.universalcycles.com/shopping/product_details.php?id=39947

                https://r2-bike.com/CANE-CREEK-Steuersatz-Unterteil-40IS52-Bottom_3

                https://www.bikebug.com/cane-creek-40-series-is52/40-headset-bottom-assembly---baa0086---black.html



+++ You can also buy a complete headset (110, Hellbender 70 or 40 models) with the appropriate measurements: IS42/28.6 (upper bearing size)  and IS52/40 (bottom bearing size). Models 110 and 40 can be chosen with low (9mm) or high (15mm) stack height top cover; the Hellbender 70 model is available in low (9mm) stack height only.

November 04, 2021, 08:52:08 PM
1