^^^This. Going off calculators, in my case improving my 22:30 to 20:00 would mean increasing my ~290W to 390W (!!!) all other variables being equal. Clearly in that case I’d have to look at drastically improving Cda as 390W would push me to 6.5W/kg.
Not to burst the bubble. But I think it’s going to be a stretch to knock 3:30 off a 10 mile where you have limited scope to improve aero.
GCN had a pretty good video where one of the guys tried to do a 30mph TT bon his road bike. None of their numbers made sense (watts/speed) until I checked around and found out all these UK TTs are done on dead flat courses drafting cars on a highway!
There is no way here in the midwest you will do 30mph on a endurance road bike.
That being said, I would highly recommend a Domane. IMO its the best road/gravel combo bike out there. There is a 2023 version set to hit the market soon where trek removed the front isospeed, so either wait or get the 2022. I don’t know why trek would remove the front isospeed (weight? manufacturing costs?), but to me it seems like a downgrade (I am a huge fan of isospeed for this type of bike).
Yup, there is a notable cost and complexity in the front Isospeed when compared to a regular front end. It’s not trivial for the design, parts and assembly involved. Considering that, and what I personally feel is a marginal improvement in comfort for that cost, it is easy to ditch.
For anyone wanting better front end feel and comfort, the Redshift Sports Shockstop stem is the better choice. It works far better overall, and matches the rear Isospeed on Trek bikes incredibly well. All that at a reasonable price and likely similar weight change vs the front Isospeed.
Good point maybe goal should just be set a pr and be somehwat tt capable.
So in your opinion i should probaly just wait on the new domane.
Also huge fan of the redshift stem. I almost dont want to go fully intregrated becuad i would lose the option of running a redshift stem
Unless its wind aided, or one of those UK automotive aided type days, breaking 30 MPH is a very big ask on a normal drop bar bike. It’s not exactly easy on a full blown optimized TT rig.
If that 30 MPH barrier is a big goal, and it is a worthy goal for sure, I’d think to get or borrow a used TT machine and really give it a go. Something like an older Cervelo P2 is absolutely fine. Work a bit on your position and making power in position. Give it a couple seasons to hit your goal and then sell the bike. There is almost always a good market for not too expensive TT bikes. Folks come in and out of the discipline all the time.
If buying used is out of the question, many long time TT guys will have an old bike in the shed they never sold. At least if myself and buddies are representative!!! Ask around and see if borrowing is a possibility.
I do like the one bike idea but also like that if you have a shot at 30 MPH would be a nice PR to get so giving best chance is worth it too.
Your aero friend,
Darth
I hesitate to give hard recommendation for how people spend their money. But knowing what I know about my own preferences, and what Trek seems to have teased, I would likely prefer the upcoming 4th gen model over the current 3rd gen model for a couple of reasons.
The key issue here is the unknown of release date, actual availability, and any pricing changes. So much depends on your timing and needs. Waiting could lead to missed opportunities, but we really have no idea.