Praxis Works Praxis Works makes a range of bottom brackets for press-fit shells designed to end creaking and assure correct alignment. The "Conversion" bottom bracket is made from two aluminum shells that thread together. Both sides press into the shell's standard bearing sockets, but that's where the similarity ends. as the halves thread together, they are pulled tightly into the sockets, so the BB can't rock and creak. Then, the drive side expands like a collet, against a special plastic ring that anchors the unit and further prevents creaking by eliminating metal-to-metal contact on the most highly stressed half of the assembly. Prices range from $45 to $75 USD.
Haro Returns Microshift Gains Traction Give us an update on your drivetrain...
We are partnering up with QBP to share some of their marketing resources. We're hiring a US marketing manager to push our product into the consumer world and try to raise some brand awareness, and also to help with customer support in the US. We are starting to do well with the OEMs now. Specialized spec'ed us on two models this year.
Anything new in the pipe? Is 12-speed around the corner?
Not yet, because we are not sure what the hub will be like if Shimano has a 12-speed cassette. It will probably be a different hub and we are trying to go with their standards.
So, is Microshift tied into Shimano's products?
We are all Shimano compatible. When SRAM and Shimano compete against each other, they tend to release the new stuff faster and faster. We know that Shimano makes a really good quality product. When they build a new product, it's not just 100 percent A lot of times, they ensure their product is 120 percent before they release it. SRAM's products, they want to move faster, but there are a lot of times when, like 12 speed, some things are not functioning well perfectly. And, we know that, even though SRAM moves faster, when Shimano releases their 12 speed, that a lot of the industry will move back to Shimano.
Everyone Loves Cutaways A Different Bike Lock G-Form New from EVOC Bern Helmet Wolf Tooth Components
I have PF92 on my carbon and threaded on my metal bikes. I have had a problematic PF in the past which thankfully the manufacturer stood behind. I am not convinced about threaded being better. If anything the extra support provided by the PF92 seems more logical because the bearings are inside the frame and fully supported whereas a threaded 73 sits outside and the rider loads the external bearing against the frame.
As with most bike stiff I think its really about the quality of the kit and in this case the PF.
The big question seems to be why are certain manufacturers using threaded on carbon frames? Santa Cruz etc
the whole reason threaded H'sets dissapeared was the tooling for cutting a thread on to steerer tubes an H'set parts was super awkward, time consuming in production and expensive, also there needs to be extra material to cut the thread into.. so extra wieght.
the threadless head set design is way better stronger lighter and cheaper for industry and consumer,
threaded H'set cups........................................?
Rarely is it the headset cups that were pressed into the frame that are the source of creaking, that happens from a lack of grease around the headset bearings, and the bearings themselves wearing out.
Pressed in interfaces on bikes work well because tolerances have gotten tighter. There's no reason to complain about these interfaces anymore.
www.bbinfinite.com/pages/ceramitech
I read it right.........
so you call a threaded headset 30 year old tech but, you think the same tech would be superior just on the frame.........................?
so your'e gonna end up with a head tube with an external dia of something like 80-90mm............
extra long too for all this thread (say goodbye to ZS head sets) all that extra material?? your'e looking about an extra 1/4 pound to the weight of a bike, extra cost for the tooling in the factory, extra cost to the end consumer and the cost of extra huge spanners.
yeah lets go backwards to solve a problem that doesn't f*cking exist
LOL
To use say a standard shimano external BB as a BB, headset (with angular contact bearings) and as a main pivot bearing on a full sus. £20 replacements, available everywhere, no differing standards, one tool, fit n forget is my idea. Still the same ahead set design.
OK I'm out
Why threaded head sets
Are way inferior to threadless head sets
As an example
To why
Threaded head set cups
Would be
A
f*cking stupid
Idea
Can I make it any simpler
For you to understand
?
1. Try to get your facts straight.
2. Realize i probably dont care nearly as much as you seem to about debating something that currently is irrelevant regardless of who is making the more salient points.
3. Go for a pedal. Your demeanor reminds me of myself when i havent pedalled for a bit. Or if i need a Snickers bar.
1: please point out out my wrong facts, really... go for it
2: this is more fun than work
3: great assumptions, if you could see how hard i'm laughing at the concept of threaded headset cups
Imagine making a 24mm, Shimano BB compatible crank - how would you sell it?
It would really struggle.
"our crank isn't quite as light, strong or cheap as a Shimano XT, but we do it in pink...."
I'm 190cm and my bike came with 170mm cranks, why should my 155cm gf ride 170 too?
I wouldn't like riding with 214mm cranks... (that's the proportion)
And when the Hope/whatever bearing muppets pipe up "mine lasts 3 years"... well I can afford to put in a new Deore BB every other weekend and it still cost me less... Your Hope/whatever isn't going to be box fresh for the entire 3 years is it!
Shimano do it right. Leave them to it!
XD
Settled on 165mm, shorter would have been 155mm (made for children I've heard?) which should be proportionate for her but is a big leap from the 175mm she had.
ah cool quick at work search came up with plastic
I got some 155mm NX cranks a couple of months back but alas they're not Boost compatible so my wife with her 100mm shorter legs than has to run cranks 5mm shorter than mine.
So dumb.
3 years of Deore BB every other weekend.......78 new bottom brackets = about £780!
So even if you needed new bearings in your Hope BB once a year (and most certainly don't) I think that equates to a pretty good saving over the Deore deal.
Even half a year of Deore BB's would cost more.
Someone should cater to the big and small crowd out there.
Thanks for the suggestion though, I have never heard of them!
He needs something to desire besides Nintendo games and Captain Underpants
Whoa. Thought for sure i'd see a bloodbath in the comment section over this one. Has this truth finally been accepted by the masses?
When properly adjusted the clutch doesn't interfere with shifting. However most owners throw out their manuals and never adjust them properly.
D-lock goes through the frame at minimum, or frame and a wheel ideally (frame and front wheel is usually easy for road bikes). If you carry additional cables/chains, those go through the other wheel. Or you can just carry a bunch of heavy chain and a padlock, that works too.
No lock is invulnerable, but a well-secured bike won't be worth a thief's time. I've gotten drunk and left my bike locked overnight, and come back in the morning to find that a thief tampered with it, but ultimately decided it wasn't worth the effort. I have had a saddle stolen though.... not a fun ride home.
seriously, I could break any D lock in seconds with this technique (That again I wont spread about on the internet)
@bkm303 you have a good point, make your bike so much hassle that the thief moves on to another, easier bike