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I burnish bushings in my struts so I'm interested in this topic, but we're really getting in the weeds here. Let's continue this discussion here: vitalmtb.com/forums/hub/fork-friction-burnishing-chassis-alignment-etc

Oliver is a smart guy! He made my original handle which I still use, as well as my steerer pressing gear. I think that new design just uses very fine machining on the surface to gradually draw it through the bushing and wouldn't be removing any material. It's probably a lot better than the technique of trying to mash an oversized tool through the bushing with brute force as I know for a fact that can tear the material away from the steel backing. So if you need an extra large burnishing tool this is possibly a good way to...

Most current lyriks and Zeb's seem to have a pretty good tolerance where everything is nicely aligned and don't bind but with minimal clearance. So while I prefer slightly more clearance, I wouldn't call them tight and it's probably a combination of forks sitting around for a while and getting dry/sticky that makes them feel less than ideal. It's interesting, it often feels like Fox forks have 4 bushings with fractionally different sizes, but maybe the average clearance is larger so combined with the thick oil used in the spring leg (and lots of oil in the damper side) it...

That last sentence seems important…

I don’t think you get it Dave. We are going to revolutionize fork manufacturing on this forum without ever having visited a factory or even talking to a designer or engineer about the myriad of factors that affect the design and manufacture of said forks.

takes about a minute for both legs: https://www.youtube.com/watch?v=HlCWHTxueaY min 1:00 to about 2:00, a capable engineer should be able to automate this step with a robot...

Can you specify? I don’t know what intend does. But yeah I believe RS is making thousands of forks per day (a lot of volume comes from the lower end stuff you guys don’t think much about- eg Judy). Or at least was during the Covid peak. Tact time is a real issue. I’d worry about those rotating burnish tools scraping/burning material off the bushings. Fill the lower leg with bushing dust. The factory sizing method is different and that is what is tested and validated by engineering team. YMMV. One longevity trick is to wash your lowers when you...

RS probably flows 5x more free product to bros than Intend sells in a year. Scale not even on the same planet.

Simple answer, volume... Look at how many forks Rock Shox has as OEM spec.. Their lowest volume high end fork is still more units than Intend does in a year..

I would be surprised if your typical Taiwanese worker doesn't fully assemble the fork in the same time as it takes to manually burnish the bushings.

+0.15mm oversize would take some serious time and a lot of elbow grease to make I through the bushing that is in typical size range. I use + 0.1mm head on my boxxer, the lowers weren't too bad from the factory, but I still got decent workout from it don't it in the sunny afternoon lol. I don't think I would be even able to start the burnishing process with +0.15

Was this mentioned here? SR Suntour are working with Rogue Racing to develop an electronically actuated shock. Pictures are from the pink website. Apparently the actuator is controlled by a software that reads the terrains and it acts on the normal compression circuit. The shock can be locked out too.

That is the Shimano STEPS eBike only Di2 derailleur, been around for quite a while but not much media on it

Found on REI's website - available 5/28 - is this a new XT Di2? https://www.rei.com/product/215401/shimano-deore-xt-12-speed-rear-derai…

I honestly think Rockshox doesn't get enough credit for their attention to friction - everyone loves to talk about the latest dampers but those come well after the friction and the spring in terms of what actually matters. I noticed things like increasing the bushing length and carefully choosing bath oil viscosity (not too thick in most forks, but the short travel skinny leg forks get heavier oil) along with good alignment and clearances in the new forks. Fox still use very short bushings in all their models, plus I'm positive the oil channels they added in the lowers do...

110% on target. Pal had a spoke pop midway thru a 25mi ride and it went through the sealing tape. Bummer, but a tube held up for the rest of the loop. Week later on my way home same damn thing happened to me on my commuter. Got hip to the idea of the Gorilla Tape over sealing tape from another website. It does stop the puncture and the sealing tape is a treat to remove as compared to year old and sealant logged Gorilla Tape. Added bonus, it creates a better seal in the tire drop zone, so even...

Looking at some tech randoms on some random site, I see the rotor does have engraving on the outer side while being installed this way. As you'd expect on a correctly installed rotor. I understand Brembo has quite a bit more history in designing brakes than I do, but I'd love to hear from the designer of this rotor. Last time I checked, physics applied to us all the same and the usual way to mount a rotor has a very good reason behind it.

I know we spent thousands of dollars on precision ground sizers, go/no-go gauges and had countless sets of lowers sized, CMM measured, tested, inspected, dyno'ed etc and STILL had a lot to learn about bushing sizing. BUT sizing the bushings bigger almost always makes the fork feel better, so if a shop does that and cleans/services your fork at the same time- it might be a nice improvement. It's just a company like RS can't gamble with over-sizing bushings. You'd have thousands of warranty forks to deal with. If a shop over-sizes a few customer's lowers not a big deal...

The bushings are sized to give minimum friction without having to worry about customers complaining about bushing play. Obviously misalignment from an under or oversized hub width is going to cause more friction, but the tolerances on the bushings are TINY and the basic rule is make the clearance as big as possible without crossing into the warranty loose bushing danger zone. I think floating axles are a small performance benefit, but I also enjoy the simplicity of the regular 15mm axle when I load a bike into the back of my car.

From what I was told originally, he was interested in developing a complete fork. Steve said that the newer chassis out there are good enough to not make it worth their time to worry about a full package. It was about a year ago that he told me the fork cart was coming after the Tellum release, I've been patiently waiting ever since. I personally am not impressed with the charger 3 or the X2. I like my MRP V1 lift over both, and like my Ohlins TTX in the 38M2 over everything else.