Rust Proof Brake Discs?

[RBT]

Hello, I'm a newbie to the site and this is my first post here! I'm trying to get back into riding after far too many years away! I've lots of questions, but I'll just post one at a time

I need a new bike. My budget is US$ 800 all-in. Definitely not a lot!

I could buy a pre-built bike with alu frame with carbon forks and Claris 2x8sp group, which is fairly nice. But I'm a rocket engineer and I like building things! So I'm also investigating the possibility of building an ultra-low-cost carbon bike using parts mostly from Ali.

I have my eye on a Ceccotti frame that I can get for $313 delivered, together with an LTWOO R7 10sp full group w/ rim brakes for $216. I should be able to get a used set of wheels (such as Shimano RS500) in good condition on ebay for about $120, which leaves $151 - enough to get some Continental GP 4 All Seasons tires to get the most out of the system, and still be able to pay for bars, cables, tape, pedals etc. without going over my budget limit.

So, my first question is about disc brakes: I live on the Space Coast of Florida and the really hot, humid, salt-laden air here rusts and corrodes EVERYTHING, horribly. I'd like to go for mechanical disc brakes instead of rim, but the rust issue holds me back. Can anyone suggest any disc suppliers who have rust proof products?

Cheers,

Ross.

[jonathanf2]

I’ve left an old disc brake mtb outside for a year exposed to the elements. The disc rotors never rusted. For $800, just buy a used rim brake bike. My buddy sold a mint Wilier carbon rim bike with Ultegra 6800 for like $400. If you want to build something, budget for more quality components. Building it right the first time will cost you less money in the long run when you get the itch to upgrade!

[RBT]

Well, the responses to that question went in an unexpected direction!

So disc brakes don't usually rust, eh? Are they usually made from stainless steel or something similar?

And a used CF bike would be a better approach? Hmmm. Interesting to hear that same thing from everyone who responded - thanks.   Checking ebay and craigslist there do seem to be quite a few options to choose from, some in my region too.

I'm going to pivot my plans and will heed your collective advice - thank you, all, for putting me on the better path!! Advice like this is precisely why community forums like this are so wonderful!

Cheers,

Ross.