TT bike build...help me design the ultimate weapon

Ok…long story short…I hurt my back and I’m stuck home for a while until I heal up and can go back to work.
I’ve been thinking of posting a bike build thread and now have the perfect excuse (and time). I will be building up this bike over the fall/winter.

Lets get this party started…
Frame Ridley Dean XS (possibly P3C Cervelo if my “deal” on the Dean falls thru)
Cranks Zipp Vuma Quad
Bars Zipp Vuka Bulls
Rear Disc…Lightweight Carbonsports.

ok… so who wants to add to it?

Cheers,
Kyle.

…unfortunately, your choice of cranks and rear wheel so far eliminate an accurate power meter.

tom, don’t let something useful like a power meter cloud your judgment. what’s really important is how good the bike looks sitting in the garage - not how it performs.

…unfortunately, your choice of cranks and rear wheel so far eliminate an accurate power meter.

Hehe. Though couldn’t he still install a Polar PM? Or is the Polar system still not as accurate as the SRM/PowerTap? (A quick search shows that you know your stuff regarding the Polar PM, so I am genuinely curious.)

On the Dean, I would lean towards Oval Concepts for the aerobars; if you’ve got the Jetstream fork and seatstays, why stray from that trend in aerobars? Here’s an example, but you can customize them quite a bit: http://www.trisports.com/oval-a921-jetstream-complete-aerobar.html

I’ll have my Dean done in about a week (last components were shipped to me yesterday), I’ll post pictures. For what it’s worth, I’m using Xentis aerobars but I don’t think they’re that fast; I just think they’re cool.

Ok…valid point. I do have a power meter on my tacx and certainly have access to a powertap training wheel.
I could easily be persuaded into a different rear disc. I have the Zipp Vuma cranks on my hill climb bike and I really really like them!

What is your goal here? Are you trying to build the fastest (ie most aero bike) possible, or something that guys on ST will say “Dude, that had to cost 10 grand?”
As for the Ridley, I’m never sure how seriously to take a time trial bike with a 76 degree seat tube.

Chad

…unfortunately, your choice of cranks and rear wheel so far eliminate an accurate power meter.

Hehe. Though couldn’t he still install a Polar PM? Or is the Polar system still not as accurate as the SRM/PowerTap? (A quick search shows that you know your stuff regarding the Polar PM, so I am genuinely curious.)

True…I haven’t used mine in a while though (I actually lent it to a friend and he promptly severed the chain speed sensor wire…arghhh). For TT type efforts, the Polar should be just as accurate as the other options, but I guess I’m showing how spoiled I am now that I’ve been using power meters that have good accuracy in the short term efforts as well.

That said, I don’t think I’d encumber a frame like that with all the wiring the Polar involves (even the new “wireless” models)…especially considering how “clean” a setup like a CinQo/705 combo is…heck, you don’t even need a wheel speed sensor or magnet.

I’m trying to build the most aero/fastest bike possible, given the fact that this bike will be specifically build to my goofy physiology. (short torso…long legs).
I’ve been to 2 different FIST certified fitters and am confident that either a P3c/P2c in size 51 or Ridley Dean in XSmall will get me into the most aerodynamic position possible.
As far as the 76 degree seat tube on the Ridley is concerned…the angle on the Cervelos is either 75 or 78 pending on where you position the post. So I am not concerned by this.

Kyle.

Kyle, Ridley makes a 78 degree seatpost clamp for the Dean; I’ve got mine arriving in a few days. So no worries about that “76” stuff. You just have to special order the 78 deg clamp.

If money is no object, just find someone willing to part with their munchkin size Cheetah - that would be a good place to start. Maybe Natascha Badman has an extra (if it is small enough). “Aero” it up after that will all you want, but then head to the wind tunnel. BAM! Non-UCI legal, uber aero human powered machine. Now, about that human power …

Great information here…I like the idea of the Oval Concepts bars…good call. I’ll pass on the Cheetah…it would be amazing but I do race and will need to at least appear to stick by the rules. kidding…sort of.

Great information here…I like the idea of the Oval Concepts bars…

Why? Since your stated goal is “most aero/fastest bike possible”, what makes you think that those split wing bars qualify? If you’re not encumbered by UCI rules for your TTs (and the vast majority of folks in the US are NOT) then I would suggest some 3T Ventus bars instead…SO GOOD they were BANNED by the UCI! :wink:

P4
Hed Stinger 9 front wheel
Hed Stinger disc rear wheel
vision aluminum basebar, narrowest model, with brake upturns cut off
vision brakes
fsa team crank with fsa TT chainring (probably 99% as aero as the zipp crank, lighter, and the money savings lets you buy a p4 haha)

put your water bottle between the aero bars and your flat kit in the p4 water bottle.

I’m trying to build the most aero/fastest bike possible, given the fact that this bike will be specifically build to my goofy physiology. (short torso…long legs).
I’ve been to 2 different FIST certified fitters and am confident that either a P3c/P2c in size 51 or Ridley Dean in XSmall will get me into the most aerodynamic position possible.
As far as the 76 degree seat tube on the Ridley is concerned…the angle on the Cervelos is either 75 or 78 pending on where you position the post. So I am not concerned by this.

Kyle.

I have the same long legs and short torso issue and is really is not that big a deal once you know it is a problem. These are the items that really make a difference to aero:

front wheel
aero bars
fork
frame
rear wheel

Since your chosen bike has a fork then you really only need to worry about the other stuff.

If cost is no object, and it apparently isn’t given your choice of the Ridley, then I would buy Zipp 808s and a wheel cover to cover the wheels. And a 1080 front for those days when side winds are not a problem.

My personal favorite aerobar is the Vision Integrated with the down swept pursuit bars. In aluminum. Carbon fiber is a waste of money in anything but frame and wheels.

The rest of bike just needs to be solid, so you could buy Shimano 105 and not suffer any speed penalties, though somehow I doubt that will be what you do.

Chad

Tom, would the 3T Ventus bars work with the Ridley Dean frame? Just curious because of the integrated stem on the 3T set up. I’ve never seen those bars in person…and obviously not on a Dean.

Jack…If a deal on P4 falls in my lap…I will be all over it. Ugly or not…if a good deal on one appears…I’ll be on it like a rat on a cheeto.

Tom, would the 3T Ventus bars work with the Ridley Dean frame? Just curious because of the integrated stem on the 3T set up. I’ve never seen those bars in person…and obviously not on a Dean.

I don’t see why not if the stack and reach to your pads works out…and if you don’t like the integrated stem, you could always go with the 3T Brezza instead.

I don’t see why not if the stack and reach to your pads works out…and if you don’t like the integrated stem, you could always go with the 3T Brezza instead.

I’m unconvinced that the Brezzas will have the same advantages, they don’t share too many of the characteristics of the Ventus.

yep, i look at the brezzas, and I think “visiontech is cheaper”

you gotta pay a lot to beat the vision setups.