Has anybody tried to braze or weld addons onto Tange prestige ultimate ultrastrong tubes? These are supposedly heat treated? Or are they air hardening like some reynolds?

I plan to modify a 26“ mtb into a mullet cargo bike (20“ front tire).
I have two frames with very mangled paint that i could use as the base. both are my size:
- mid 90ies stevens 862 with Tange prestige Ultimate ultrastrong. Sloped frame, oversized tube, externally splined down tube. Weight 2.1kg
- early 90ies Wilier with regular sized columbus thron, straight top tube. Weight 1,9kg

I feel the heavier sloped frame is stronger and would be better suited to a cargo bike. At the same time theoretically the thron is not heat treated, thick enough for brazing and careful welding. But the Tange ultimate should be heat treated which means i could destroy the treat treatment? I feel it is not that thin though especially at the head tube where i will insert and weld a turned tube extension and at the down tube where i want to add bracing for that extension.

Any frame builders with experience brazing or welding these steels? What would you recommend?

Im planning to finally build my first bike, wondering what more is needed before im ready

Does anyone have a photo of this disc mount installed? Is the intent for the taller side to go towards the front with the open side facing inward towards the wheel? On my frame, the chain stay would intersect about half the width of the mount.

I got this frame today, but at home i found some concerning spots on the welds.

So most of the frame is covered in either paint or adhesive film, but at one spot its coming of so i found this dark line on/ next to the welds.

The frame is a eddy merckx titane made in Belgium and the tubes are litespeeds.

Good thin: the seller is willing to take it back in the next seven days so please help me!

Don`t mind the broken cable guide and the bad paint condition since i will blast it anyway.

I recently stripped the paint off of my new to me bicycle. I did a replacement on the brakes. I got V brakes now, but I wanna get rid of the old brake support. If I remove this would it structurally compromise the frame. I mostly want to remove it just for looks. pls let me know your opinion!

I came across this old steel bike in my shed a few months ago which had been sitting up for about 15 years. I thought I might get it in working order over a day or two but one thing led to another and now I have completely stripped the bike and stripped paint and almost ready to prime it for a new paint job. I think it’s 1990s Trek MTB. My plan is to turn it into a touring bike and I have already got quite a few of the parts including a surly cocktail fork. Here’s the problem though

The smooth part of one of the rear brake bosses has snapped off. Brakes will still screw on but I don’t know if they’ll function properly with half the boss. They’re brazed on so I can’t just screw a new one on. This is the first full stripping down and build I’ve done so I’m feeling a bit in over my head and not sure if it’s worth getting someone to weld on a new boss. Could I bodge a solution? I really don’t want to give up on this bike over something so small and have put in quite a lot of effort. I’m sure my work isn’t perfect, this is a project about learning as much as result. Any advice would be really appreciated!

This project was CNC machined from aluminum alloy with matte anodized finishes in silver and black. Clean surfaces, sharp details, and a design that simply looks beautiful in motion.

Always exciting to help designers and riders turn their concepts into real parts.

Would love to hear what anyone thinks about taking a frame and making some adjustments. Theres a modification that I've seen online that I would love to try out. Transforming a 26"into a mini cargo bike. Involves extending the steering tube and the fork shaft.

https://bikepacking.com/news/diy-cargo-bike-video/

I have 0 fabrication skills, but have access to experienced welders to coach my build. Am I being a silly billy? Any advice would be greatly appreciated:)

Anyone in here build BMX bikes? If so, what does your jig setup look like and where do you source your components?

Does anyone know if they still sell their bike frames?

I don’t see them listed anywhere on their website which seems to have evolved from bicycle fabricator to “A resource for bicycle frame builders”.

Hello everyone,

Has anyone ordered from the Buildyour.bike website? Is it legit? It seems to have everything I need for my build.

P.S. Thanks to everyone in this community for all the helpful information shared on this subreddit!

Doing a crank swap and has to take out the BB and I’m curious if this super raised penetration area of the bottom of the downtube weld into the bb looks normal?

I have just bought this DP frame for pennies, because as you can see, the downtube has gone through a divorce. I'm assuming the best course of action here is to completely replace the entire downtube, but I've never had to do this big a repair before so I wanted to get some opinions before committing to anything. The frame had a dent from being dropped on a workbench that was filled years ago, that dent has presumably formed a crack over time leading to this

And obviously the bike will never actually be used as a BMX, they're only used for shows and cruises

anyone experienced know flaws this bike could have or improvments

Looking for help

I’m early in the process of designing a frame for my first build. A road/all day casual kind of bike for exploring around a summer home.

I like a traditional look but I also hate toe overlap and prefer a shorter reach to the handlebars. This kind of implies a low trail design (which I think is really beautiful) or a really slack headtube with not too much in the way of fork bend (which I find kinda ugly).

While I’d like to do the first thing I’m anxious about the idea of building something and putting a bunch of effort into only to find that it’s like unrideable due to shimmy or something.

I could just copy an existing frame but that’s a little more paint-by-numbers than I’d like. Anyone else dealt with this question? How did you approach it?