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LTrumpore Added a comment about press release HotBars Introduces the World’s First Heated Bicycle Handlebar

4/16/2026 2:27am
Can confirm they actually work really well, and heat up enough to feel in about a minute. I was on a couple cold and wet Bellingham, WA group rides this weekend and there were two people running later-generation Hotbar prototypes and standard lock-on grips. Had no idea what they were until I asked about the plastic housing bolted to the bars - figured it was a mount for a storage bag or something - turns out it was a battery so I got curious. With my riding gloves on, the bars were in fact quite comfortably warm. I have no...
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This press release has 9 comments.

PUSH Industries Liked a reply to forum topic Enginerding: Inverted Forks and Front Hubs

3/13/2026 10:41am
As a company, we prioritize performance and durability over weight. We could offer a fork that would be competitive in weight, or lighter than the European version you're referring to. I've said many times that they make a good product....it's just a different category than what we're building for. If we wanted to reduce weight and make an equivalent product to what they're building, we would have to remove the following items: - Coil Spring based spring system - Independent Hydraulic Bottom Out Damper - Sub Chamber with external adjustment - IFP based sealed damper - High Speed Compression with...
This forum topic has 55 replies.

ethanrevitch Liked a reply to forum topic Enginerding: Inverted Forks and Front Hubs

3/12/2026 11:57pm
Oh interesting. Had no idea this was already done. @PUSH Industries I'm interested to what tolerance an effective "oil bushing" is to? Isn't that a great way to develop premature bushing play? Also what this is effectively doing is having a "burnished bushing" and filling the void with oil. In many cases burnished bushing can create more friction on heavy compression since the station has more wiggle room in the lowers/bushing and can go off axis easier. Would this not be the same for an oil bushing since it's easily movable? Yeah enjoyed that video. I really like what Henry...
This forum topic has 55 replies.

LTrumpore Added a reply to Enginerding: Inverted Forks and Front Hubs

3/13/2026 12:37am
The hypothesis-yet unproven-would be that while the difference in unsprung mass is too small to matter, especially when factoring in the weight of the wheel and tire, a targeted increase in sprung mass might be beneficial. Cycling in general has always been adverse to any weight gain, and as a result maybe we’ve overlooked where it might actually be of...

PUSH Industries Liked a reply to forum topic Enginerding: Inverted Forks and Front Hubs

3/12/2026 8:05pm
The sprung/unsprung mass is more of a factor in motorcycles than in bicycle forks. As you pointed out, the die-cast lower legs found in MTB forks are very light already. As for lubrication, there is a massive advantage there. With a conventional fork, ideally, the bushings are "sized" to provide the tightest fit to the the stnachion tube without binding. Suspension tuners often refer to this as "burnishing" the bushings. The reason this process exists is because of how difficult it is to keep fluid "splashing" between the stanchion tube and fork bushing. Our NINE ONE is different in the...
This forum topic has 55 replies.

LTrumpore Added a reply to Enginerding: Inverted Forks and Front Hubs

3/12/2026 8:13pm
If memory servers me correctly (big if), the original 2005 era Fox 40 bushing/stanchion interface was claimed to be designed this way. They felt loose if you locked the front brake and rocked back and forth but felt solid when riding and fluid filled the gap. Given that this was over 20 years ago it may have been a positive...

ZAKBROWN! Liked a reply to forum topic Enginerding: Inverted Forks and Front Hubs

3/12/2026 12:57am
Didn’t the RS-1 use a proprietary hub?
This forum topic has 55 replies.

LTrumpore Added a reply to Enginerding: Inverted Forks and Front Hubs

3/11/2026 7:53pm
Probably one where the fork manufacturer designed their own proprietary hub to precisely control all tolerances and optimize the hub/dropout/axel as one system rather than separate ones. As far as I know the closest anyone has come to doing that was Foes with their 30mm axel - and maybe some of Sunn era custom Boss forks - but even then...

PUSH Industries Liked a reply to forum topic MTB Component Pricing

3/4/2026 10:41pm
Again, coming from the manufacturer's perspective. You mention that "outsourcing a step will add a ton to the price". In reality, it's often outsourcing a step that saves considerable time and money. One specific example I'll share would be our shock shafts. We used to machine our steel shafts, complete with in-machine diamond burnishing process to the critical outside surface. The burnishing process was slow and required constant monitoring of the coolant ratio used for cooling and lubricating this process. Now, we outsource this step using an OD grinding operation to achieve the same results at a much lower cost...
This forum topic has 26 replies.

PUSH Industries Liked a reply to forum topic MTB Component Pricing

3/4/2026 10:13pm
Could for sure. But generally speaking, if a manufacturer is outsourcing a portion of the process it's not because it's going to add costs.
This forum topic has 26 replies.

LTrumpore Added a reply to MTB Component Pricing

3/5/2026 8:40pm
You're not going to find someone who knows more about the granular details of manufacturing than Darren, and he is correct here as well. I'm currently looking at cost breakdown of several part I'm having made with a supplier in Taiwan and it tracks with his experience outsourcing certain processes in the US. The additional costs related to surface finishing...

DontWorryImAPilot Liked a reply to forum topic 2026 Team Rumors

2/3/2026 7:49pm
Marketing is interesting. Some of it is literally ONLY for brand/product awareness. It's an important part of creating a brand. It doesn't matter how good a product is if no one knows about it. Additionally, lots of folks in the world are the sort of folks who believe everything their brain tells them. Those folks also tend to buy the things that they think of first. If those people see a specific name come up 5 times more often than other names (perhaps because a YouTuber is posting a lot, has their videos get recommended a lot, and talks a...
This forum topic has 3116 replies.

roost66 Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker

1/25/2026 11:05pm
There is patent that references two (or more) positive chambers, and the use of protruding attachments on the lower to reduce spikes in pressure. Not sure I fully understand it, but maybe worth read. https://ppubs.uspto.gov/api/pdf/downloadPdf/20260021867?requestToken=ey…
This forum topic has 2818 replies.

RiderMikeCheck1 Liked a reply to forum topic 2026 MTB Tech Rumors and Innovation - Longer and Slacker

1/25/2026 11:03pm
Sorry, I over complicated my previous response. I shouldn’t have included the Seccus because (you’re right) it does more/different things. The purpose of the LinearXL thing will be to expand the volume of the casting below the air spring. That space contains air and when the fork compresses it produces unwanted spring force, AKA casting ramp. Which makes a fork more progressive. By having this extra space on the back of the fork, which is may be tuneable, you can reduce the progressiveness of the fork. Hence LinearXL.
This forum topic has 2818 replies.
Good find, hadn't seen that one. It spends most of the time describing what seems like a fork-based design similar to the Fox/Specialized Genie rear shocks. Two or more positive chambers overlapping (tube-in-tube style) where the total system volume is reduced when the piston closes a bypass in some way to cut off access the the additional chamber. But there's...
Those are really two different things. The Secus also increases the negative spring size significantly. Given the shape, specifically that it's not round, and the relatively small size, I doubt it's connected to the main air spring or functions at all like the Secus in that regard. I'd expect it to sit much lower towards the foot bolt (and use...
Best guesses on what that Linear XL does? In all the shots I've seen it looks a lot like a brake reservoir. Could just be a simple diaphragm that expands in the same way as internal pressure increases on the spring leg side. Seems like the easiest way to do it while keeping the current lower leg design language, no...