taras0000

I would love to have one of his bikes, but my steel LOOK is suiting my needs right now. When it comes time for a new frame I'm pretty sure Darryl will be well into a proper retirement, one that is well deserved. I would be interested to know what frame tubes he used for the bike I had posted above. I've been looking around for an oversize aero steel tubeset for ages!

defspace

Koogar, I'm interested to hear more about this project. Where can we point our browers to learn more?

Koogar

Is the current owner the person for whom the frame was designed? Just wondering why the HT is so short, requiring the stem rise. I'd guess to make it usable with aero bars, but it's pretty clearly set up as a sprinter's bike....

Koogar

Nowhere at the moment, but please stay tuned.... I hate vapor ware, so the website won't go live until we have prototype frames in testing, which hopefully won't be too much longer.

Because a major driver for us in pursuing this project is better handling and fitting frames, we want to use the website to share the results of that testing and how they impact our design decisions. As someone who has raced and coached at an elite level, in addition to being experienced as a fitter, Colby is super attuned to bike handling and understanding how the riding of others is affected by the bike and their interaction with it. We think it's a subject that hasn't received enough focus, so you can expect an emphasis on this. But as you can gather from the back and forth in this thread, I also welcome constructive debate about the materials and mechanical aspects.

Thanks for your interest!

taras0000

I've no idea who owns that particular bike. It's something that I've had saved for when I need "good ideas" when it comes time for me to purchase my own custom made track bike.

700wheel

Here is an interesting idea for rear drop-outs:

CarlosFerreiro [104 posts] 1 week ago 0 likes The drop outs sound to me like a system that has been used for horizontal dropouts in BMX, where the tickness tapers, thicker as you move towards the BB. You put the axle where you want it and tighten it there, but then it can't move forwards, as the taper locks it in place. You can still chose where to put the wheel, tight or loose chain - See more at: Felt's new Olympic track bike - spot the deliberate mistake | road.cc
Source: Felt's new Olympic track bike - spot the deliberate mistake | road.cc

Such a system might require a tapered washer under the track nut.

carleton

Interesting.

That system has been around since 2009.

Here is a great explanation.

Basically, as you travel from the end of the dropout towards the bottom bracket, the dropout flares out (away from the bike).

It requires a special washer cut at the same angle as the flared dropout to make sure that your axle nut fits flush.

queerpunk

Gol dang that's a nifty system.

gycho77

Or you could use Goliso track hub, so you don't have to worry about bent axel

GOKISO
but the hub is really expensive......

Koogar

That makes a lot more sense than cranking down on a wheel nut until your your dropout gently weeps. They lost me at "aero washer," though. Exposed rivets on wings going 200kts IAS, sure. This isn't that.

carleton

It's the tapered washer that allows the wheel nut to sit flush with the tapered dropout.

Basically, if the dropouts are angled at 2 degrees the 0-degree wheel nut will never fit flush with it. So you have to use a -2 degree washer (that can only be installed 1 way, doesn't spin) to offset that angle.

See here: https://evil-live.com/2009/06/29/sto...-lock-dropout/

Koogar

Oh, I understand just fine how it works. I wouldn't call that aero, either. Unless maybe "aero" is the new "tactical".... Now that I think about it, too many uses of the former can probably be replaced with the latter and still be about as accurate. Try it, it's track bike mad libs!

carleton

Hahahaha.

Anything that has an angle to it is considered "Aero", hahaha.

taras0000

"The washer comes with a new angle of attack, gently helping the rider to easily make their way around the bend closer to the black line"

Soil_Sampler

Hmmm...?
GOKISO?? | GOKISO

gycho77

oops
iPhone auto-correction

dunderhi

I saw this and thought about your drop outs. I know it's not quite the same, but it is a bit similar. This a Moda Sensa titanium track bike.

Koogar

Interesting - never even heard of the bike before! Looks a bit odd to me at the chainstay hood, being shifted so far outboard and almost cutaway. And I can't quite tell for sure, but it looks like a different dropout on the full bike picture. I do love Ti frames, though.

Edit: I mean the full bike picture on the webpage I found, https://www.moda-bikes.com/portfolioentry/senza/

carleton

Hi, @Koogar. Any update on this project?

Koogar

Just finalized the production dropout design about a week ago and waiting on manufacturing quotes, that's the critical path now. Took way too long and it'll be ruinously expensive to produce, but we're happy with the final product.

Waiting for them are a pile of tubes and forks, plus a geo chart that we think is pretty nifty....

carleton

Sorry to hear that.

Anything you can share?

Koogar

Nah, Colby and I both started off with the mindset that if we can put something out there that we love and that meets a need for some others as well, that is a huge reward.

Yes, but probably better to put all the info out together, which is why I have held back on the website.

carleton

Cool. Well, keep us posted.