Interesting finds around the web
#1651
Lapped 3x
Putting a sharks tooth grind on the tooth shape helps.
Cutting them like a regular steel cog is no good.
It also helps if they are 1/8th inch and not 3/32nds.
Last edited by taras0000; 01-30-18 at 11:34 PM.
#1652
Elitist
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If it was aluminum, it's not worth the few ounces saved especially assuming he rode like a 12 or 13t. I've owned one. Used it once and tossed it.
#1657
aka mattio
those british fellas put some power data on strava from their Minsk World Cup win.
Their TP starts with 20 seconds at 1000w, a minute at 650w, and overall, about 4 minutes at 530w.
A ****load of power, god damn.
Their TP starts with 20 seconds at 1000w, a minute at 650w, and overall, about 4 minutes at 530w.
A ****load of power, god damn.
#1658
Senior Member
#1659
Lapped 3x
All the more reason to use dependable equipment. Track bikes are so easily made light that one doesn't need to start using questionable ultralight components on their bikes. An average sized frame can come pretty close to the weight limit just using standard parts.
#1660
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It wouldn’t just be about weight, it’ll be about watts and feel, e.g. https://www.peekrings.co.uk/
Last edited by Poppit; 01-31-18 at 03:18 PM.
#1661
Lapped 3x
A chainring is one thing. You typically have around 3-4x more teeth in contact with the ring than a cog would, yet they both have to deal with the same amount of force being transmitted through them (via chain tension). Add the differing leverage ratios due to the differences in diameters, and the amount of force on each individual tooth is compounded many times.
To me, passing on a carbon cog would seem to be a no-brainer. On the other hand, I would test out carbon rings if they were available to me.
To me, passing on a carbon cog would seem to be a no-brainer. On the other hand, I would test out carbon rings if they were available to me.
#1663
Lapped 3x
My eyeball aerodynamics say that looks like a very slippery position. It's funny, because if you rolled his torso up at the hips a little, he would look like a normal pursuiter in the mantis position, but here, the mantis is so low that his forearms are still almost level, yet still able to close off the airspace in front of the torso.
It looks like compared to his last position, his hands are basically raised "one hand width".
The crappy thing about this, only 2 news agencies have picked up on the story from what I can see.
It looks like compared to his last position, his hands are basically raised "one hand width".
The crappy thing about this, only 2 news agencies have picked up on the story from what I can see.
Last edited by taras0000; 02-01-18 at 12:30 PM.
#1664
aka mattio
It's the kind of position that only tall people can achieve with conventional gear - no short person can have a hip angle that can still generate power while being that folded up.
#1665
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I'm not small (ride a 56 cm diamond frame) and I never made any effort to shave weight on the track, and I always had to add weight (sometimes just 20 grams of tape) after I stopped riding the old steel Pinarello. There's really not a lot of value on the track in going for lighter & less durable equipment.
#1666
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A chainring is one thing. You typically have around 3-4x more teeth in contact with the ring than a cog would, yet they both have to deal with the same amount of force being transmitted through them (via chain tension). Add the differing leverage ratios due to the differences in diameters, and the amount of force on each individual tooth is compounded many times.
To me, passing on a carbon cog would seem to be a no-brainer. On the other hand, I would test out carbon rings if they were available to me.
To me, passing on a carbon cog would seem to be a no-brainer. On the other hand, I would test out carbon rings if they were available to me.
My thoughts would be along the lines that they might be more efficient/smoother or something along those lines, given the kgf guys do focus on small improvements
#1667
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I'll admit I have no knowledge on the subject of carbon cogs, bit surely it's not in an effort to save weight as it would be one of the most negligible gains for obvious risks.
My thoughts would be along the lines that they might be more efficient/smoother or something along those lines, given the kgf guys do focus on small improvements
My thoughts would be along the lines that they might be more efficient/smoother or something along those lines, given the kgf guys do focus on small improvements
#1668
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Are there plans to take him to altitude and take a shot at Purvis' 56.303" that's been on the books since 2013?
#1669
Lapped 3x
#1670
Lapped 3x
For all the Campy fans out there (which includes me when it comes to vintage Pista Record)
https://jalopnik.com/campagnolos-408...ory-1822278077
https://jalopnik.com/campagnolos-408...ory-1822278077
#1671
Senior Member
Given his speed ATM you would have to think that is was a consideration. Their primary concern right now will be the Commonwealth Games in April which has the kilo TT. From there it would be a worthy consideration before the team changes focus towards Tokyo in 2020 where kilo is not included
#1672
Senior Member
I'm usually all for carbon components (ran Fibre-Lyte chainrings on the road for years) but the rear cog... I dunno if I'm brave enough to try that.
I was playing with the idea of a big ring from aerocoach... but even that makes me nervous (plus it's quite a bit more than just a metal one)
I was playing with the idea of a big ring from aerocoach... but even that makes me nervous (plus it's quite a bit more than just a metal one)
#1673
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Hey Morelock, I tried sending you a PM about the IO clone you have that tested well. Do you have any info on which supplier it came from? I might be interested in getting one.
#1674
Senior Member
AnglerWang1 was the ebay id.
#1675
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