Do you know where I can source a 44t Shimano DA 11s inner ring with 110bcd?
I just bought one from here, along with a 56 and 58. They do have a good rep, but I havenât mounted them yet, so canât personally say anything about the quality.
edit - read over the DA part. Canât help you there. Thatâs why I went with the above
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I think this would work well, but they are sold outâŠ
Iâll try to attach a couple of photos of my old setup. I have made some changes - but the principle is the same. The bladder is a platupus hoser 2.0 litre with a shortened hose (so it doesnât flap, stows away when not drinking). The âcageâ is made from two Lucozade 1 litre bottles taped in the middle to get the length right, and with a hole in the back for the hose to exit.
The gap between my elbows/forearms needed to accommodate this kit is about 40 or 50mm, the bladder squidges up to suit. I needed elastic bands to hold it in place - not so much when on the aero bars, but without it was a bit sloppy on the base bars.
The cage was screwed to the Trek monobar, but a better solution is to zip-tie it to the aero extensions with the cage underneath them and the bladder in between.
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I definitely like that bladder design. The one I use has the flat top that folds over with the slider to seal it. Itâs easy to fill with ice and whatnot but makes it slightly bulky.
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New TT rig and been playing around with high-hands. Couple questions for the gurus here:
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Is my understanding roughly correct in that there seems to be a no-mans land between âhighâ and âlowâ, i.e. flat or very little tilt is often preferable/faster than a âmediumâ amount of tilt, until we get closer to a high-hands position?
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I typically see higher hands combined with narrow pads and arms. While narrow is usually better, is there anything in particular about this combination?
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Along those same lines, when going high-hands, if thereâs still a gap between the arms (until we get up to the hands) Iâve heard of people trying to fill-in or cover that gap with tape or otherwise. Any consensus there?
FWIW Iâm running an Argon18 E-119 Tri+ Disc which has 51 Speedshop extensions. Theyâre great, but have considered looking into some of these newer âforearm barsâ as well
No. I test faster with 15-20 Degrees of tilt, than with completely flat or 25-30 degrees. Probably just depends too much on the position.
That may work sometimes, but it doesnât sound like a sensible solution to me. Maybe I am not understanding what you mean, but a âmono-armrestâ type solution isnât always faster.
This will be interesting.
Filippo Ganna to take on World Hour Record in August | Cyclingnews
I feel like that - if executed well - basically put a stop to anyone having a chance for years to come.
Ineos will probably be keen on taking that record back, so theyâll finesse all the details. Ganna might be the most gifted Track and TT Rider to ever be, and when he produces a near optimal performance that day, assuming Ineos makes sure all the other parameters are optimal⊠we might see something close to 57 happen.
On a side note. Following in the footsteps of Factor and Trek, I wouldnât be surprised to see a new Bolide for that event.
Ganna will have Dan Bigham helping him with the aero testing. Wonder if thereâll be interesting new tweaks to kit or position.
According to the article, Campenaerts predicted 57.5km which would be 2km more than the current world record. And everyone that rides TTs knows how much more power you need at high speeds to go even 1km/h faster.
I wonder whats the reason behind doing it on almost sea level and not altitude.
Complete guess butâŠbeing a bigger rider and probably producing more power, would the effect of lack of oxygen have a greater effect on Ganna than a smaller rider who relies on being a bit more slippery? Just a guess.
Also, despite ineosâ wealth, logistically much easier in Switzerland than Mexico expecially mid-season
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Iâd actually argue the other way round. A bigger rider will benefit even more from the altitude, since their CdA is larger.
If a 20% drop in air pressure meant a 20% drop in power and CdA, one still goes faster at altitude (at these high speeds).
Idk if Bigham has something to do with the decision to go to Switzerland (where he and his fiancé did their HR attempts).
I didnât realize the attempt was gonna be at sea level, so 56.5 would still be incredible. 57 could be Ganna in MexicoâŠ
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Wonder if the decrease in air density is worth the drop in power at altitude. Maybe it depends on the rider?
A complete guess but I suppose Gannaâs schedule may have something to do with it and perhaps his access to train on it through his season. Iâve no idea how facilities around Switzerlandâs track compare to those around a higher altitude track either.
True, he might just be more used to the Switzerland track which surely helps. Is the Rolling Resistance the same for all the tracks? Maybe thats another factor why Bigham also went to Switzerland instead somewhere else.
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Yes, it is. Donât think there are many exceptions to this.
Firstly, you can limit the losses through acclimatizing:
I recall the Mexico Velodrome sitting at some 7000ft of altitude.
So an acclimatized Ganna might still put out 90% of his sea level power. If his sea level power was something like 490W, we are now at 441W.
The air pressure should be at 77% of sea level air pressure, so the friction is decreased by 23%.
To put that into perspective. Dowsette mentioned, that his suit is optimized for 43 to 44kph of air speed, although heâll aim at 55kph average. That gives a rough idea of how much âthe air slows downâ.
In case of Brad Wiggins, the day he did it on was like the highest air pressure day that months or something. So SKY tried making up for that by making the velodrome super warm. That obviously limits performance too, but apparently they figured that it was by less, than what the lower air density would benefit him.
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I donât see any way Ganna doesnât smash the record to pieces and puts it high up on a shelf for a long time.
He has the physiology for it, he has the team for it and heâll have access to the best preparation. The only thing he wonât have is an exceptionally fast frame, but he has proven he can overcome thatâŠ.and the Bolide will be âfast enoughâ.
In a podcast somewhere, Luke Plapp already spoiled having ridden a new Bolide. I donât think he meant new to him TT bike (since heâs new on Ineos) but a new model.
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