I have a D-shaped steerer tube on my Winspace T1500 (which I didn't buy the handlebars for at the time).  Currently all my cables are externally routed on the handlebar and go in through the down tube or fork arm. I've looked around for aero, internally routed handlebar options for D-shaped steerer tubes on Ali Express and elsewhere and there doesn't seem to be much out there.

Options I've found are:

• This Ryet handlebar: https://www.aliexpress.com/item/1005004473561772.html  Does anyone have any thoughts on this?
• Deda Superbox stem: https://dedaelementi.com/superbox-dcr-bike-stem and then pair this with a separate handlebar?  If anyone has a recommendation on an aero handlebar that is good that would be appreciated.
• Buy the Winspace Zero handlebar: https://www.winspace.cc/product/handlebar/. I may well end up doing this but it is quite an expensive option.

Anyone got any other thoughts for an aero option I can use for internal routing with a D-shaped steerer tube?

So, my T1500 arrived in the NY, my wheels arrived from Light Bicycle.  All in all, I'm really happy with the T1500 frame and the wheels from Light Bicycle.

I didn't go with the Winspace handlebars, mainly because they didn't have my size at the time, but partly cost.  The other components on the bike are:

- 105 disc groupset (mechanical shift)
- FSA stem
- Prime X-light handlebars (not aero, no internal routing) - mainly got these as they were cheap, light, recommended, and temporary (once, I'm happy with the sizing and fit on the bike, I'll at some point switch to a fully integrated handlebar and move the prime's to my old bike, if I like them).

Given no internally routed handlebars, cables are routed through the headset, everything goes into the down tube except for the front break (obviously).

OK, so I took on this project with virtually no bike mechanical experience.  Before this, the most I'd done was change my cassettes and chains. I generally don't even look under the hood of my car.

In terms of the build, I've completed the following, none of which I'd ever even tried to do before:

- cut carbon steerer tube down to size (seatpost was OK, just!).
- installed forks, stem, handlebars, shifters.
- installed seatpost and saddle.
- routed brake hoses, cut hoses down to size, installed new barbs and olives, bled brakes.

So all, in all, the only things I had left to do were:
- bottom bracket installation
- crank, chain and pedals installation + tune everything.

I'm really impressed with the T1500 apparent quality (haven't ridden it yet).  My only feedback is:
- I'm a bit concerned that there is no plastic guard separating the gear cables from the carbon on the frame as they run under the bottom bracket area, as the cable for the front derailleur comes out of the frame, and where the cable comes out of the rear chainstay above the thru axle hole. I'm worried about the cables cutting through the frame where there is contact.  As a result, I've left some of the plastic routing guides in those particular places.
- The seat clamp is really fiddly. It's a struggle to attach the saddle if you don't have 3 hands. You have to use their seat clamp because the seatpost is proprietary.

Today was press-fit bottom-bracket installation day.  Everything seemed to go really smoothly. The whole thing seemed to be straight and I thought it was done.  However, when I tried to put the cranks in, they wouldn't go out the other end.  I looked inside and found that the centre tube had not attached to the other side and while the bearings might have been OK, the centre tube had pressed in crooked (see photo).



So, I'm guessing this is not easily resolvable?  I'll need to somehow break the centre tube (which felt like plastic before I installed it) so that I can get a bottom bracket removal tool into position, then remove the BB and install a brand new BB (even assuming the BB is reusable, there's probably no way to just buy the centre tube?

Any suggestions appreciated.

Thanks

I've been looking at a lot of frames. I'm clear about my requirements so I have a short-list and it just comes down to quality and getting the best frame for the money. 

All I have to go on is reviews and feedback as to the quality.  However, when shopping around there is definitely a price difference.  For example, if I look at pricing it looks like this, from most expensive to least expensive (taking into account shipping costs):

Winspace - T1500
Elves - Falath
ICAN/Triaero - A9
Carbonda - CFR 1056 (more of an endurance frame, I know, but their race bike only has 25mm tyre clearance, and I'd switch to endurance if the frame quality was better than others)
TanTan - X21
Dengfu - R12
Velobuild - VB-R-168

Now leaning towards the ICAN, thinking that by spending a bit more I'll get a better frame than the three below it.  What are your thoughts on using price as a guide of quality.