30 years ago, I was a road and criterium racer in GA. I still have my training wheels from back then. They have many tens-of-thousands of miles on them. I have no clue, but it is north of 30K miles. They are not worn out. I cannot imagine what it would take to wear out rims from braking.
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Re: Dream Aero Build - Rim Brakes or Wait for Thru Axle Disc Frames? [Tom A.]
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Re: Dream Aero Build - Rim Brakes or Wait for Thru Axle Disc Frames? [exxxviii]
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Makes sense that aluminum rims would hold up to the braking from tens of thousands of miles of riding. Would a modern carbon fiber rim be equally robust, though?
Re: Dream Aero Build - Rim Brakes or Wait for Thru Axle Disc Frames? [gabbiev]
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gabbiev wrote:
Tom A. wrote:
GlobalNomad wrote:
So I have been picking up parts here and there for an aero bike build but a recent typhoon led to a lot of reading on ST which lead to more reading... I am now on the fence about picking up a new aero frame versus holding off a year and picking up an aero bike with disc brakes and thru axles to run the new Enve 4.5 AR wheels, or something like them. I had a quick chat with a gentlemen who tried them out and he couldn't say enough about the ride or handling on long, winding descents.
So, if you, the ST aero gurus were going to have one road bike for the next 3-5 years, would you use an existing aero bike (looking at a Parlee, S5, for FRD) or would you wait for a disc braked thru axle bike (the Parlee Chebacco, while not a 'road bike' is tempting)?
I'd pick up an S5 or Madone, put some Hed Jet+ Black (Turbine brake track) wheels on it and never look back...
Now then, what I actually did for my own personal aero dream road bike is this:
Do you have a write up on this frameset? Looks very much like what I've had in mind.
No write up, but here's the basics:
Fork: 1st Gen Cervelo S5
HT: 44mm (Chris King Inset headset)
DT: Columbus Life Aero 42mm (run narrow end forward, offset at BB for cable exit)
TT: Columbus MAX bi oval (horizontal oval at HT to match width and more surface for cable entry, vertical oval at ST matches ST width)
Seat tube: True Temper HVERST1
Chainstays: Columbus life Oval
Seat Stays: True Temper Velo Seat Stays
The internal cable routing is accomplished with a "triad" of vertical brass tubes brazed in place and running from TT (just behind stem), behind the HT, and then puncturing the DT. The ends of brass tubes are curved rearward after going into the DT and end shortly after entering. The 2 shifter cables have housing stops at the TT, and I just run Teflon inners down to the braze-on cable guides at the BB opening. The rear brake tube accepts full housing (or hydraulic tubing). The brass tube "triad" is faired with body filler behind the HT. That's about it :-)
http://bikeblather.blogspot.com/
Re: Dream Aero Build - Rim Brakes or Wait for Thru Axle Disc Frames? [exxxviii]
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First, a quick thank you to everyone for both the quick and thoughtful replies! Second, my apologies for not including a little more info on terrain and intended use. More on that below…
Snaaijert - Thank you for the response and for the point about the contact patch. I spend part of the year in two flat cities on opposite sides of the Pacific. I started assembling parts when I found a deal on an AR FRD. The frame sold while I was on a flight so I started looking around for other options, which lead to looking at discs which led to…
Mike, Brian, and Specialist - While not an expert or member of the industry like many on ST, from watching mountain bikes over the years I would agree - in a few years I think that more road bikes will be disc based, hence being ‘on the fence’ about building up a bike with rim brakes if they are going to be less well supported in the years to come. I have a friend in Thailand who had a 10 Speed Dura Ace Di2 bike and he sold it after it sat for a month when he couldn’t source a replacement derailleur.
I'd pick up an S5 or Madone, put some Hed Jet+ Black (Turbine brake track) wheels on it and never look back...
Now then, what I actually did for my own personal aero dream road bike is this:
Tom - thank you for the advice although your aero dream bike sets the bar a bit higher! Thank you for following up later in the thread with a description of the build.
dtaco - Although I would like to get out with a power meter to feel and see the difference (in numbers) with lower pressure and wider tires I drank the Silca coolaid. While the difference in time over 40K’s between an AR FRD with a set of nice rim braked wheels and an equivalent disc braked aero frame with the 4.5 AR’s would probably be small (and irrelevant for 95% of my riding), I guess I would like to have the option to upgrade if I started to do a little more competitive riding.
If you live a rainy mountainous area, go for the discs.
If you live in a dry flat place, go calipers.
RoYe - great points. I live part time in a flat SE Asian capitol (we have a rainy season and a dry season). This was going to be something for longer rides here, the IM70.3 Hawaii, and maybe the Norsemen if I make the lottery for that.
exxxviii - Where would you place the Venge VIAS Disc in that continuem of evolving brake-axle-wheel technology and specification?
Lanierb and PanamaRed - the point on something new coming out is well taken - for some sports I worry about technology being outdated, for others like four wheeling I am fine using old school equipment and still ‘getting it done.’ As for not using brakes while riding through the Appalachians - I rode around Williamstown WV but I have to confess that I must have lost as I did use the brakes at least once.
snaaijert wrote:
I guess it depends on the terrain and conditions you expect to ride in. My dream aero road bike would be a Felt FRD, but where I live there's zero elevation. And while discs might introduce a better braking surface in the wet, let's not forget the contact patch with the ground is the same, it's not some magical device that will prevent you from falling over in the wet if you're not a bit more careful…Snaaijert - Thank you for the response and for the point about the contact patch. I spend part of the year in two flat cities on opposite sides of the Pacific. I started assembling parts when I found a deal on an AR FRD. The frame sold while I was on a flight so I started looking around for other options, which lead to looking at discs which led to…
Mike, Brian, and Specialist - While not an expert or member of the industry like many on ST, from watching mountain bikes over the years I would agree - in a few years I think that more road bikes will be disc based, hence being ‘on the fence’ about building up a bike with rim brakes if they are going to be less well supported in the years to come. I have a friend in Thailand who had a 10 Speed Dura Ace Di2 bike and he sold it after it sat for a month when he couldn’t source a replacement derailleur.
Tom A. wrote:
I'd pick up an S5 or Madone, put some Hed Jet+ Black (Turbine brake track) wheels on it and never look back...
Now then, what I actually did for my own personal aero dream road bike is this:
Tom - thank you for the advice although your aero dream bike sets the bar a bit higher! Thank you for following up later in the thread with a description of the build.
dtaco wrote:
The switch to disc is happening as we are going with wider wheels and tires … I think wait a bit for a thru axle disc bike with good tire clearance and you can potentially get more aero wheels with less rolling resistance. Not everyone seems to be accepting the arguments from silca on rolling resistance, this part is up to you but at least your going to the versatility to adapt as the industry evolves.dtaco - Although I would like to get out with a power meter to feel and see the difference (in numbers) with lower pressure and wider tires I drank the Silca coolaid. While the difference in time over 40K’s between an AR FRD with a set of nice rim braked wheels and an equivalent disc braked aero frame with the 4.5 AR’s would probably be small (and irrelevant for 95% of my riding), I guess I would like to have the option to upgrade if I started to do a little more competitive riding.
RoYe wrote:
You didn't say what kind of riding you'll be doing. If you live a rainy mountainous area, go for the discs.
If you live in a dry flat place, go calipers.
RoYe - great points. I live part time in a flat SE Asian capitol (we have a rainy season and a dry season). This was going to be something for longer rides here, the IM70.3 Hawaii, and maybe the Norsemen if I make the lottery for that.
exxxviii - Where would you place the Venge VIAS Disc in that continuem of evolving brake-axle-wheel technology and specification?
Lanierb and PanamaRed - the point on something new coming out is well taken - for some sports I worry about technology being outdated, for others like four wheeling I am fine using old school equipment and still ‘getting it done.’ As for not using brakes while riding through the Appalachians - I rode around Williamstown WV but I have to confess that I must have lost as I did use the brakes at least once.
Last edited by:
GlobalNomad: Sep 23, 16 22:46
Re: Dream Aero Build - Rim Brakes or Wait for Thru Axle Disc Frames? [Tom A.]
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Tom A. wrote:
PubliusValerius wrote:
LAI wrote:
That is such a good looking ride. How does the Omega work under the BB? My original Omegas would jam if they encountered any road grime or if cable drag wasn't 100% perfect. The X models improved greatly to the point I don't think it would be an issue on the fork or seat stay, but I have my doubts on the BB mount. Therefore, I had been thinking about get the EE for the rear brake and running the Omega X up front when my Felt Aero Road gets rebuilt. However, I'd rather go Omega X if it passes the I road/raced in crap conditions and still worked well test.
The Omega X brake sucks in the rain when mounted under the BB. The rain kicks up all sorts of grime and they lock up really bad. Last time I rode in the rain I had to stop and pull apart the calipers manually and then only use the front brake for the rest of the ride.
Yeah...IMHO, they really need a cover that encloses the roller mechanism to avoid that.
I guess I am going with EE on the rear then. Currently have a TRP back there but don't care at all for the stiff lever feel and cable routing.
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