Welding the cog

Hello, the thread of the lockring has gone, so i was considering in welding the cog into the hub. Is it safe enough? are there any more options? i read rethreading is not an option so i dont know what to do!

twine?

cogs tend to be steel, hubs tend to be aluminum.

cogs tend to be steel, hubs tend to be aluminum.

does it mean they cannot be weld? excuse my ignorance..

sorry yep. I think there are some methods of joining dissimilar metal but they are difficult techniques with possibly specialist equipment.

thatd be more like soldiering wouldnt it???

I think some techniques are in the brazing or soldering temp ranges but I'm no welder just a little knowledge (dangerous!).

Google brings this up for aluminum / steel welding http://www.eng-tips.com/viewthread.cfm?qid=148077&page=1

As one cannot weld the two so diffenet material direct, special bi-metal (Al+St) pieces/bars/plates are commercially available. They have been manufactured by explosive bonding, sometimes microscopic amounts of other metal layers have been added on the bonding for special properties. Anyhow, these bi-metal transition pieces act as adaptor between your parts; you weld your Al part to the Al-side of the piece, likewise your St part on the St-side of the piece.

so the same sort of process as soldering with solder wire???
or along those lines

thank you!

so the same sort of process as soldering with solder wire???
or along those lines

No welding but a bridging peace is use which is half metal 1 and half metal 2.

You can get an aluminium cogs of course. But these wear pretty quickly. But then the hub sounds near useless anyway.

Still, I'm not sure I'd trust welding it anyway.

Unless you could force a lockring on (further fecking the threads) and weld that.

Still might have some play though.

New hub?

just checking that its the thresd on hub that is fncked and not the actual lockring?

just checking that its the thresd on hub that is fncked and not the actual lockring?

Definitely the thred on the hub. I tried with a different lockring and would not thread. Also, you can see the hub is almost flat. It is just the thread for the lockring though

couple of self tappers should hold it. Maybe the new hub idea was the best one...

clag?

welding the cog is the new jumping the shark.

Thresd?
Wield?
Soldiering?
Jumping the shark?

What the actual christ is wrong with this thread?

My mate has decided to weld his cog on because he's so impenitent. Hows it going to hold up? anyone with experience?

I said brakes, he said no.

I don't know if thats a good idea, there are other options, such as drilling holes in the sprocket and then with heavy duty zip ties attach the sprocket onto the spokes also.
Oh please let me know if something bad happens.

tell him to go for it, i wanna see how it turns out

I want to know more about your use of the word 'impenitent'.