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The Un-Official Guide To Fixing Headset Play - Please Add Your Advice Here
Hey Everyone, I wanted to create a guide to help troubleshoot headset play regardless of bike brand. By no means am I an expert, and I hope others can add to this thread. Please understand this guide/thread isn't intended for airing our bike brand grievances or calling out user errors. Ultimately we all just want our bikes to work as intended. Common Reasons For Headset Play 1. Steerer/Fork isn't cut low enough, or an extra spacer is required above the stem to properly compress the top cap. When initially cutting the steer tube, an extra 2-4mm below the cut line needs to be accounted for in order for the top cap to recess properly. 2. The headset bearing (upper or lower) doesn't sit inside the head tube cup snug enough (laterally, front to back). Velobuild, for example, provides 52mm diameter headset bearings. Other headsets sold online or for other bike brands may only be 51.8mm diameter. That 0.2mm is the difference between a snug fit or loose headset. If your bearings are loose this will always cause play. You can add a couple layers of tape inside the bearing cup to prevent the bearing from moving around. Or just buy a new 52mm headset. 3. The top headset bearing is recessed too far into the head tube cup, causing the headset cover to rub on the frame, preventing the complete headset stack to properly compress. If this is the case you will need a thicker headset bearing (7mm, 7.5mm or 8mm thick) or a thicker c-ring so that it sits flush with the top of the headset opening on the frame, thus preventing the headset cover from rubbing the frame. EDIT: Another resolution is adding some micro spacers between the c-ring and top cap. 4. The upper and lower headset bearings are installed in reverse. Some bikes (like Yoeleo's recent G21 gravel bike) provide a set of headset bearings, with one of the two bearings being slightly thicker than the other. The thicker of the two bearings needs to be installed on top of the head tube, and the thinner bearing on the bottom. If these two bearings are installed in reverse order then...see Common Issue #3 It is critical to do a dry run of installing the crown race, headset bearings, c-ring, headset cap, stem/cockpit, and any additional spacers before actually proceeding to building up the bike. Also be sure to compare and inspect the two headset bearings to confirm they are in fact the same size and thickness. August 02, 2022, 02:23:09 PM |
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Re: Best FM909 downcountry tires
Honestly, the "best" tire is different for every terrain and locality... we can recommend out the wazoo but doesn't mean it will be any good for you. Best bet is to hit the trails in your area and see what other people have/ask them questions... Also how does one define a "down country" tire.... I know the new Forekaster was just remade with a heavier casing and categorized as "down country" (which kills me because I liked those tires because they were light-ish and most importantly inexpensive). I just got a set of Vittoria Martello's that I'll be trying here in Arizona, I'll likely be throwing on some Mezcal/Barzo's to try as well. August 17, 2022, 08:51:57 AM |
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Re: Carbonda FM909
Hi there, as far as I understood "2vrs max" means that there is no cage inside of the bearing, only metal spheres, which makes them much stronger against force.Max - exactly. 2 vrs is a type of seals. Quote So if the usual F6901 2RS has the same geometry, one could use that as spare? I didn't look on the bearing type I have to admit. So I can't confirm whether the geometry is the same or not.The measurements is the same. May be we can use not flanged bearings. But the main question is whether they will fit correctly into the frame seats and whether they will not be overtightened during installation. August 19, 2022, 06:53:46 AM |
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Re: Carbonda Gravel CFR505 build
...Also curious to hear if the frame has held up well! I didn't know it was available again, that is a great news! I've built a few dozen of them, not a single issue reported. And I plan to have a week ride with it in Croatia next month 
September 01, 2022, 11:36:17 PM |
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Re: Carbonda Gravel CFR505 build
Its hard to get any cheaper than that. Its normally a pretty fast courier like a week to your door. Iys worth it.
September 05, 2022, 03:09:37 AM |
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Re: Carbonda FM909
I already bought the frame and Wing said I need to buy bushings(mounting hardware) separately since they don't sell it. Please somebody tell me where can I buy it?bike-components, bike-discount, r2bike, bike24, enduroforkseals, aliexpress, may be nearest suspension dealer, good workshop to turn out the part on a lathe. ...or is 160mm compatible ...?Compatible September 05, 2022, 05:57:51 AM |
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Re: Carbonda FM909
Bombtrack prototype on Carbonda FM 909 frame: https://www.facebook.com/bombtrackbicycleco/photos/pcb.5518873451481392/5518853094816761 September 21, 2022, 02:06:12 AM |
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Re: Groupset News
Looks like they have changed the shifter ergonomics! http://www.ltwoo.com/en/pr.jsp?_jcp=3_568 
October 01, 2022, 09:57:08 PM |
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Re: Groupset News
Total capacity refers to the amount of slack the cage can take up. For a 1x, it's max vs min cog, a 9-46t would need 37t capacity. For a 2x example, an 11-32t with 50/34 chainrings would need (32-11)+(50-34) = (21)+(16) = 37t as well. What you need to find out is the max cog size. I would guess that since max cog size isn't listed (in the descriptions I looked up) and it's usually paired with 11-30t or 11-34t cassettes, that it's unlikely to work well with a 46t max cog. I would rather find a rear derailleur with same pull ratio than use a big drop bracket.
October 02, 2022, 01:39:13 PM |
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Re: Groupset News
S-Ride are also working on hydraulic drop levers unsure if they plan to go into Road 2x or if it is just meant to pair with their 1x gravel RD October 05, 2022, 05:08:37 AM |
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