NJS (No Joint Safety) Carbon

H8ahz gon' h8

Does this get @hillbilly test ride and if so will it be filmed?

Possibly. There’s gonna be a 3 stage interview process for rides centred around whip skids and average power output. S’long as he passes it’s gravy

Also big news. I’ve booked holiday and heading down to the shed of wonders (family home with tools) on the fourth November for some crabon action.

Any tips on a dremel? Needs to be cheap but also really good and make a lot of noise so I can pretend I’m a proper machinist.

Ain't nothing but love for a project like this.

I ain't mad at cha

cheap-ass angle grinder
or a slightly better one by draper
there are a huge range of discs and accessories (more variety at screwfix or on ebay)... will look/sound more impressive when cutting steel than carbon, which it will go through like a hot knife through butter. The more you can support the carbon while cutting/shaping the less it will splinter and compromise the structure. You might be able to find a broomstick or something that fits inside the tubing that you can sort of cut against when working the carbon. I have also seen that some people say to tape the edge you are working on.

On the safety side, it never hurts to wear a pair of cheap sunglasses to keep shit from getting in your eyes and thick rigger gloves (as cheap as £1!), though obviously more thorough protection is the recommended thing.

And don’t breathe in carbon dust. That shit lethal :)

future of this bike

Putting carbon tubes into the existing lugs won't give a big enough contact area for the glue, given you won't get a proper bond to the metal. The sockets on bonded Alan frames are deeper than steel lugs and they still have problems with failing bonds.

General rule of thumb for bonding tubes into lugs or plugs into tubes, is contact length should be twice the diameter of your tube.

I wonder why no one has ever done anything similar to this! mmm

Subbed.

When jdmitch is giving you safety advice, you know you’re in trouble.

@jonsteel24

Subbed. Your carbon insanity is giving me ideas for my cracked moulton.

This tape advice is solid! I’ve never done any tube mitreing so I’m just gonna eyeball it and see if it goes well. I’ve got an angle grinder at home but I’ve decided to get a dremel as well to satisfy a long held desire for a tiny powered wire brush.

Gloves agreed think I’ve got a whole bag of site gloves at home which will help

As for broom handles not sure I’ve got any of those knocking about. Strictly a hoover household.

Also definitely do this!! Carbon can fix everything.

I mean, not that I’ve tried yet.

https://youtu.be/bCMmWy9_dDw

This might be useful! It gives you a curve which you can print out and fold around a tube so you have a cutting guide. I have a Mac and this program works for me. There are also some Windows versions I believe.
http://download.cnet.com/TubeMiter/3000-2054_4-10972981.html

This is brilliant!! Does anyone have any idea how I can accurately (ish) measure the geometry of the frame without an inclinometer?

Clinometer app for smartphone?

Adjustable protractor? The protractor in my adjustable square set is accurate enough.

I was going to recommend this online tool for the tube mitres: http://www.metalgeek.com/static/cope.pcgi

Machine some peices of two sections: the biggest, to be welded inside the existing tube stumps, the second to have the crabon bonded around them, and get the crabon flush with the existing tubes?

Just in regard to the health and safety aspect of this venture...

• Cheap sunglasses won't cut it, get some CE certified safety glasses from Screwfix, they'll be mega cheap but they'll do the job... if a cutting disc breaks off and a chunk hits your cheap sunglasses you can say goodbye to having a pair of eyes.

• While you're at Screwfix you should purchase a couple of dust masks. Preferably PP3 filters. Carbon dust is seriously bad shit. If you're going to insist on cutting it with a cutting disc (not necessarily the best course of action as I think you can get specific discs and blades for cutting it) I'd also recommend making some sort of hoojy using a clothes hanger or somesuch to hold your vacuum cleaner near where you're cutting and turn it on while you're at it to try and suck up as much of the dust as possible.

• Wear reasonably light gloves... better control and feel will be more valuable to you than a thick pair of gloves for this sort of work.

• You can even get cheap painters overalls in Screwfix if you want to go a step further in avoiding the dreaded carbon dust...

Good luck!

Just in regard to the health and safety aspect of this venture...

Lol.