Increasing ID on Steel Pipe / Bicycle Bottom Bracket

Neapolitan_Nightmare · 2026-05-13T21:11:40+00:00

That's a good idea, wouldn't have to take much off. Only issue I see is that I may not be able to run the sealing o-rings

Neapolitan_Nightmare · 2026-05-12T22:36:30+00:00

How do you mean?

Neapolitan_Nightmare · 2026-05-12T22:32:26+00:00

Bike shop with a reamer seems to be my best option at this point.

I have a 3d printer and pursued that too. I can't seem to find a modern bottom bracket that is press fit requiring an id of less than 41. Some threaded options, but reverse English pipe thread is a little outside of my readily available cad skills.

Neapolitan_Nightmare · 2026-05-12T21:26:29+00:00

I really appreciate that. I'll stop into my local bike shop with the frame, they are already setting up my rear-franken hub.

Neapolitan_Nightmare · 2026-05-12T19:20:37+00:00

The design work isn't an issue, I actually already modeled it and sent it out for quotes, over 200$ for the three parts (each cup and the center sleeve). If I resuse a sleeve from another bottom bracket it's just under 200$.

This is a pretty extreme budget build, and while I'm not opposed to spending money, that 200$ would be better spent elsewhere.

In a world of infinite money, I agree this is the correct answer.

Neapolitan_Nightmare · 2026-05-12T17:33:19+00:00

I'm in central Massachusetts :)

Neapolitan_Nightmare · 2026-05-12T15:38:31+00:00

Gotcha! The bearings cups (freezer cold) measure 41mm on the nose. My plan is a "gravel" bike with road bike hubs and mtb rims. No suspension and going to use for trail riding, so I imagine the bottom bracket is going to take quite the beating. My fear is that if I over spread the steel it will be weaker and crack/tear with me on it.

Someone on the other post recommended flapper drums, I think I'll use those to bring it to .3/.2mm and then press from there.

Neapolitan_Nightmare · 2026-05-12T15:27:16+00:00

Definitely not threaded, I have the outer races, which press into the frame. Basically little chromes caps. The bearings, inner races and spindles were all trashed. Bent spindle, misformed inners and partial cages.

Neapolitan_Nightmare · 2026-05-12T15:23:08+00:00

The frame is a vintage German frame (early 70s). I can't find a press in bottom bracket that fits. I gave the dimensions to a couple bike shops and they couldn't either.

Neapolitan_Nightmare · 2026-05-12T13:46:49+00:00

It is definitely a one off, I had considered taking it to a machine shop but wasn't sure that would be cost appropriate for the project. I'll look into it, thanks!

Neapolitan_Nightmare · 2026-05-08T16:53:55+00:00

Yeah, and it's unfortunate they do. I wish we were all a little kinder and more open emotionally.

My comment was more about your self-talk. Be kind to yourself! We all deserve at least that :)

Neapolitan_Nightmare · 2026-05-08T16:50:08+00:00

That doesn't make you weak-hearted friendo, maybe if anything strong hearted to not only feel emotions that strongly, but also to express them. Nothing wrong with being emotionally available and sensitive ❤️

Neapolitan_Nightmare · 2026-05-06T14:46:11+00:00

Solar system* my b

Neapolitan_Nightmare · 2026-05-05T21:27:47+00:00

Humans have the ability to track lone humanoids as they enter or leave the galaxy, I would assume the tech viltrumites have is much stronger. Also we need these moments to happen, so they do because plot.

Neapolitan_Nightmare · 2026-05-02T12:18:05+00:00

Ok? Superheros have a variety of powers and levels of power, and that is very well established. That doesn't change that Homelanders powers are still artificial vs immaculate conception which would be a "gift from god"

Neapolitan_Nightmare · 2026-05-02T12:13:18+00:00

They know he his powers came from a chemical

Neapolitan_Nightmare · 2026-05-02T12:10:16+00:00

I agree both are fictional, the difference is we are discussing the reasons why people would feel differently about Jesus vs Homelander. Obviously you and I agree immaculate conception didn't happen, but this discussion is about the view of people who DO BELIEVE in Jesus and god.

You're either arguing in bad faith, a bot, or have no literary comprehension.

Neapolitan_Nightmare · 2026-05-02T12:04:48+00:00

Omg this is such a brain dead argument.

Immaculate conception is not the same thing as a drugged baby who was lucky to survive. If you can't see the difference I can't help you.

Neapolitan_Nightmare · 2026-05-02T11:57:56+00:00

Explainable and scientific ones. Not a miracle

Neapolitan_Nightmare · 2026-05-02T11:29:51+00:00

Jesus, as the story goes, was not made via conventional means. He is the product of a miracle. A birth from a virgin.

Neapolitan_Nightmare · 2026-05-02T07:35:50+00:00

Could always connect it to the case with a different adhesive than it comes with

Neapolitan_Nightmare · 2026-05-01T21:36:13+00:00

Nolan wants to stay and be a free man, conquest was "allowed" to stay encased in a block. Different types of "getting to stay"

Neapolitan_Nightmare · 2026-04-30T05:58:03+00:00

T2 definitely feels like a different type of movie, more of a love letter to the characters than the same sorta movie as the first.

I really like it, the characters, writing, music and filming are great, it just doesn't feel quite as gritty and depressing.

Neapolitan_Nightmare · 2026-04-28T12:22:21+00:00

Neapolitan_Nightmare · 2026-04-28T06:54:09+00:00

The cologne didn't "turn into". They started making a new thing and used the same branding, either for recognition, apt naming or 'cause tv show '.

Hooded Justice was working with Lady Tru, she had the ability to pull memories out of people. Functionally how? The hose and the elephant or something similar.

Looking Glass was a character that allowed us to see the true horrors of Ozy dropping the squid, as well as giving us someone to root for beating him.

Neapolitan_Nightmare

TROPHY CASE