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From: Roger Merriman <roger@sarlet.com>
Newsgroups: rec.bicycles.tech
Subject: Re: Most significant advance in bike technology for speed?
Date: 27 Jan 2025 23:11:03 GMT
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cyclintom <cyclintom@yahoo.com> wrote:
> On Sat Jan 25 10:13:31 2025 Roger Merriman  wr
>> No my gravel bikes chainrings are not massive by any means dropped from
>> 32-48 to 30-46 recently which has made no difference to the top end in that
>> at that point I?m generally freewheeling.
>> 
>> But pros are running 53 and above and into the 60?s apparently
>> <https://www.bikeradar.com/features/tech/why-are-pros-using-such-big-chainrings>
>> 
>> As the speed of road racing has year by year increased.
> 
> 
> 
> 
> I get your point, but I have to have top end in several nearly flat roads
> around maniac drivers. A 50-11 is probably too high but a 50-12 does see use.
> 
46-11 will get you to 27mph at 80rpm/with 30 something sized tyres 50-11
will get you to 29mph, and 54-11 to 32mph, and the gap narrows as the
cadence drops.

Might like higher gears if one is a masher, but even quite modest cadence’s
will result in speeds folks are unlikely to hold, unless one is a Pro or
fit club rider or equivalent.

I’d also note that as my Gravel bike more than likely though it’s quite a
early one, so doesn’t have huge tyres, but I suspect your in the 25/28mm as
your using older frames which your building up? And thus 50-12 at 28mm will
be same as my bikes 46-11 with 35mm and the jump from 12t to 11t is quite
small.

Roger Merriman