https://www.pinkbike.com/news/trek-teases-steel-top-fuel.html
A major manufacture dropping a modern steel full suspension frame would be rad.
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Yeah nah!
Spotted this today.
Interesting concept.
Obviously reminiscent of the old Odyssey Elementary BMX stem (still have one in my box of goodies).
The âboltlessâ interface made me think that maybe it was something like the Tree Bicycle Co. Collet stem, but this seems like itâs different to that.
In the comments they mention âturn coat instead of star nutâ and âturn coat and bearing spacer. Kind of like a BBâ.
I might be totally ignorant, but whatâs a turn coat in this context?! All my googling just shows me references to people with shifting allegiances, but Iâm pretty sure they havenât stuffed a tiny traitor into the steerer tube to keep things tight.
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The turn coat he references is just full length bolt to pre-load the headset with allowances for the front brake line to also pass through the headset for bar spins. A DJ thing.
https://www.pinkbike.com/news/Rockshox-turn-coat-review-2010.html
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@manzanitacycles up on the Radavist recently with a little Q&A too. Great looking bike. Congrats Nick!
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Colnago is making a modern steel frame with Columbus Tubes and 3D printed parts!
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A while ago they brought back rim brakes, now a steel frame. How long will it take to re-invent curved fork blades?
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Cool bike! This video was great:
It features a tour of Columbus. Learned a bunch
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Waiting for this forum to be discussed on the radivist.
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This one is for the framebuilding nerds:
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Thank you for this. Retrotec is a bucket list bike for me. Love his bikes
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Spotted this interesting pedal on Bikepacking.com
Got nerdy and started thinking about what it would do to the pedaling circle and effective crank arm length. May have an effect similar to what happens with an oval chainring, but clocked differently.
Would be interested to see how the effect of using these pedals compound when paired with an oval chainring. If anything at all happens that is - at least whatâs discernible to a rider.
Made an illustration of how I believe the pedaling circle would be affected. Assuming a seated rider with the same saddle height as me.
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Why are the top dead center and bottom dead center not directly above / below the bottom bracket in your drawing?
Now that I think about it, it is probably because of the STA⌠But the knee is roughly above the bottom bracket near the top / bottom dead center position. Does that not put the bottom/top dead center above/below the bottom bracket also?
I just did a simple quick draft.
The actual TDC will depend on a few factors such as if youâre standing up, sitting down, STA, saddle setback etc. And that obviuously affects where the knee is in relation to the BB.
I didnât take the time to measure my legs and my knee position - so I just made this simplified variant. Of course, I could have skipped the STA and just assumed that TDC would be exactly at the top. Oh well, the end result is not going to be much different.
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Itâs certainly something investigated by Geoff Apps over here in the UK.
He was a huge advocate of very high ovality elliptical chainrings (33%+) combined with swing pedals.
I found the set up felt very much more like natural walking than the conventional pedal and chainring setup. Something driven by the feeling of stability from the pedals and the place/load/power/release feel from the elliptical rings. Traction was excellent, something to do with balancing the available power with the leverage/gearing to give a consistent torque output?
The slight rearward tilt to the pedal as the power is put down also added to the feeling of stability.
All the best,
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Quite a large addition to the âtreadâ (old term) aka âQ-factorâ (Grant Petersenâs coinage). Sideways spacing between your feet. Not everyone is sensitive to that, but for those who are, thatâd be a downside.
I noticed the wide tread when I rode briefly on Hi-E pedals (similar design), but Iâm sure one adapts quickly enough.
Wider tread does also result in a lower cornering angle before pedal strike, so this may not be good for agrressive criterium riders who want to pedal through the corner. Though these (and Dyna-drive) are well shaped underneath for cornering clearance, which helps.
For off-road, itâs not so much cornering as just hitting random things like rocks or the sides of the trail when youâre in a rut.
Not saying thatâs a deal-breaker, the pedals might still be totally worth it.
I think itâs been a long time since Colnago has used curved blades. I think they were one of the first traditional makers to go straight.
For those of you lucky enough to have a plasma table, looks like it could be hacked to do some tube mitering:
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