Welding on a crank?

[matrox02]

metal spraying gets the shaft too hot - distortion is what you want to avoid.

From the sound of things it's on the taper - broken out the keyway ?

The crank will have to be split as once it's built up it needs machining between centers. Personally, I'd use bronze. Once the taper is lapped, the key is only to ensure correct assembly and doesn't actually hold anything.

No its not the key thats broken, when i cut the old flywheel off i cut a bit deep and cut into the shaft, the key is fine otherwise

[Woodman]

Machine a new keyway 180 degrees from the original and adjust timing etc accordingly

[matrox02]

Machine a new keyway 180 degrees from the original and adjust timing etc accordingly

Its NOT Key way :S

[matrox02]

OK so i managed to get pictures, Pic 1&2





I just cleaned it with methylated spirits, Ill try the knead it steel now

[george formby]

If you can get the relevant part numbers try this outfit. Got all the bits for my DT crank offen em. JP-Parts

[AllanB]

Bit of JB weld and she'll be all good to sell ...........

I don't see any reason why a skilled welder watching the temps could not build that up for you so a skilled machinist could turn it down. Few bucks though .......

[matrox02]

If you can get the relevant part numbers try this outfit. Got all the bits for my DT crank offen em. JP-Parts

Awesome, Ill flick them a query, I finished allying that steel stuff, Ill see how that goes

[unstuck]

I made a gear lever out of minute mend once, lasted a couple of good trail rides.

[skippa1]

OK so i managed to get pictures, Pic 1&2



I just cleaned it with methylated spirits, Ill try the knead it steel now

You sir, are a butcher with a hacksaw

[matrox02]

You sir, are a butcher with a hacksaw

though.. it was an angle grinder, and yes, its nasty

[2smokes]

Before you do anything dodgy, it CAN be fixed. Take it to a good engine reconditioner. They will build it up and grind it back. Same way they repair and re-grind race/vintage stuff. Talk to an old tradesman.

[hayd3n]

i repaired my clutch lever with that metal putty stuff its still good as

[Woodman]

Before you do anything dodgy, it CAN be fixed. Take it to a good engine reconditioner. They will build it up and grind it back. Same way they repair and re-grind race/vintage stuff. Talk to an old tradesman.

Except you cannot grind tapers on a crankshaft grinder.

[Ocean1]

OK so i managed to get pictures, Pic 1&2

It's fukd. Those RMX crank ends are a weak point, I've seen a few bent and battered ones.

Like the thread on the end of that one where someone's pounded the shit out of it trying to get the flywheel off.

Anyone with the experience and gear to fix it is going to charge you more than the price of a new one to do it.

[matrox02]

It's fukd. Those RMX crank ends are a weak point, I've seen a few bent and battered ones.

Like the thread on the end of that one where someone's pounded the shit out of it trying to get the flywheel off.

Anyone with the experience and gear to fix it is going to charge you more than the price of a new one to do it.

hmmm.. well if anyone can source a new one.. then im all ears, because they are simply not made anymore