NJS (No Joint Safety) Carbon

Hi yo

The setting :

So I crashed my glittery eimei a few months ago, creasing my top and down tube. It still handles fine, but obviously isn’t the most structurally sound thing in the world.

Normally around this time of year I decide to build something with no idea of how to do what I want to do when I start. So I’ve decided this year I’m going to fix the eimei. With carbon tubes.

The plan:

I’m going to cut the top and down tube off. I’m then going to cut and mitre me some Chinese crabon and tack it in place. I’m then going to join the bits up with some carbon tow and epoxy a la bamboo bike style.

The end result:

A pinnacle of engineering which people will talk about for years to come as the ultimate in composite frame modification.

The frame as it stands (ghostlike, with no one holding it up)

The plan I’m working off of:

Anyone done this before?

Anyone done this before?

Nobody has been insane enough. Yet.

Disgonbgud.png

Sounds interesting!

Jdmitch’s relative?

If it was me, I’d cut the tubes a couple of cm from the lug and glue carbon tubes inside the stumps.
Carbon tube OD needs to match steel tube ID at the butted ends so maybe difficult to find the perfect fit.

Subbed.

The plan I’m working off of:

Made me spit tea all over my keyboard. Subbed and good luck, this is going to be awesome or terrible. Most likely both.

Do it! You know it makes sense!

(what could possibly go wrong?)

As @drøn suggests - leave some stumps and bond those tubes in

Also Rep for turning misfortune into radness

Radness and madness. Will definitely be interested to see how this plays out.

Hyped

Could you wrap the creased tubes with some carbon as reinforcement?
Not as exciting as your current plan but easier.

Wild.

How are you going to bond to the steel with epoxy? Obviously it won't bond chemically, you'll only be able to achieve a mechanical bond against however you key the surface. Would it not be better to have a frame builder replace the damaged tubes?

Silence with your sensible talk.

love the visualisation. How are you planning to weld the 'RAD's on?

Ahh I did think about this. And also thought about it in reverse (buying Oversized carbon) and making the ID go over the OD of the steel lugs, but then I ordered the wrong size.

So I’m just going to dremel most of the luge off and mitre the tubes hopefully well

So the plan is to use layers of carbon tow and epoxy, which should work as long as both sets are clean

And this is how you become a frame builder rite

And this is how you become a frame builder rite

Dude you're up there with Talbot Frameworks, integrating carbon in steel frames.

This is the most exciting thing I've seen on the internet since HOW CAN SHE SLAP. Subbed.

I like how this will be the inverse of most carbon/metal bikes, keeping the steel for seat-tube and fork!

yesyesyesyesyesyesyesyes

@Sam_Doman ssshhhhhhhh! pipe down... we're all finding our inner frame builder through different torturous routes. Some of us just need to be impaled on carbon shards along the way...
@haveo "RAD's" are self-welding... you would know if you weren't such a #buyer