Purchased the ZTTO DR190 54t ratchet hubs.  The spoke holes are double drilled shaped like a key hole.  Anyone know the purpose of that?  ZTTO says it's for better durability but I'm scratching my chin.

It's for flat spokes like the sapim cx ray

@amacal1: What kind of bleed kid did you buy? At the moment they only offer the version without box and without batteries on Aliexpress: https://de.aliexpress.com/item/1005006636427506.html

I think you can buy the Ltwoo bleed kit as a separate item on AliExpress.

On Amazon, I originally bought a "Borgen" brand kit, which there was nothing wrong with it other than the fact that it only had one kind of fitting and that fitting did not work with the Ltwoo caliper.

I then bought a "CYCOBYCO" brand kit that had a variety of fittings, one of which fit the Ltwoo caliper. This is not a full endorsement of that kit, per se. There seem to be many others that also come with a wide variety of fittings.

I LOVE how they're trolling Factor logo & paint schemes.
The RS1 looks like various workswell / yishun / lightcarbon models, it's for sure OEM.
The SL1 could be a VB 177, bearing in mind VB is a broker, not a factory. It looks similar, but slightly different, for eg, to a long teng 266.
I dont follow gravel much.
Those boutique brands are basically a scam, it's incredible.

we know for a fact that rider & clothing matter more than the bike itself, it's about 80% rider and 20% bike, afaik.
That being said, a bus shaped tube is a bus shaped tube. Even without a wind tunnel, we know that tear drop / kamm tail shaped things are more aero than round things, or boxes... And we know that buses aren't aero. You wont find an aero frame with a wide, boxy shape like that, nor will you find a frame that touts its aero prowess with a boxy shape like that - until proven otherwise, ofc. Given it's an ultra light frame, and making frames of that weight at this price point is a new phenomenon, and that LC doesn't make any aero claims, i think it's safe to assume it's not aero. Whether it matters or not is subjective. But even if it "only" costs 5W at 45kmh, i try to spend my money diligently, and given how incredibly hard it is for me to raise my ftp by 5W, if i'm going to buy a frame, and if i can, i'm going to avoid buying one that screams "i'm a bus". It's a guesstimate. It's also an aesthetics consideration, as i dont find that boxy shape appealing.

As long as we all know what we are getting/building/taking, get support and are all happy that's all it matters

Opinions will always be opinions Being it Hambini and all other (pseudo) specialists.

People spend more time online reading all the details and micro-details than actually riding the bike and enjoying the fresh air .

Absolutely agree with you. I am not an engineer, nor a specialist in aerodynamics. LC should send the frame to Hambini for review (ah! ah!)

I'd love to see Hambini reaming it