Hi everyone,
At first i visited a metalworking shop asking if they could drill out and weld a sleeve ( of 4cm to divide the strain on a bigger suface)on the enfield sprocket to make it fit on the china diesel keyshaft.
I couldn't be done because the sprocket was hardened.
So they found me an industrial duplex sprocket with the same amount of teeth and welded a sleeve on it.
So, the sprocket is not hardened and i do not have the equipment, or couldn't find anything/one approacheble to make it happen.
After 34.000km, some wear is to be seen at the teeth..
Someone else mentioned the tempering of the enfield sprocket and make it hard again, but no larger area for the keyhole?
How did you do it??
crankshaft sprocket
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Sphere
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Re: crankshaft sprocket
I bought a taperlock sprocket for 20E. Surely you can find a decent one that readily fits the China diesel axle at Kobo.
'92 Enfield + Hatz 1B40: street legal, weld up stainless exhaust, check engine rpm and change final drive sprocket.
Re: crankshaft sprocket
From Kobo groningen? yes there's my current sprocket from. non-hardened..
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Sphere
- I luv the smell of Diesel...
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Re: crankshaft sprocket
Temepering steel takes from an hour to several hours. Buying a new sprocket every 35000 kms seems cheaper.
'92 Enfield + Hatz 1B40: street legal, weld up stainless exhaust, check engine rpm and change final drive sprocket.
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Diesel Dave
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Re: crankshaft sprocket
Try a test piece using this method.
Your old diesel oil in a metal container (contains lots of carbon)
Cheepo BBQ, lots of charcoal and an old vacuum cleaner with the option of putting the pipe in the 'blow' end.
Set up the cleaner so it blows into the bottom of the BBq there's usually a small vent or cut a hole.
Get the biggest fire extinguisher you can lay hands on!
Set fire to the charcoal and once it's burning nicely turn on the vac cleaner -you now have a forge!
Place your sprocket on it and get it to cherry red.
Dunk it into the oil - make sure it goes straight in under the oil if you leave any bit showing the oil will catch fire.
Give the sprocket a few minutes pull it out and let it cool.
It should now be VERY hard ie can scratch glass.
You now need to temper this to a slightly less hard state, back on the BBQ 'till it turns a light straw colour and quench in water.
You how have a hardened and tempered sprocket and built yourself a forge so you can offer to make horse-shoes for the local community.
Dave
Your old diesel oil in a metal container (contains lots of carbon)
Cheepo BBQ, lots of charcoal and an old vacuum cleaner with the option of putting the pipe in the 'blow' end.
Set up the cleaner so it blows into the bottom of the BBq there's usually a small vent or cut a hole.
Get the biggest fire extinguisher you can lay hands on!
Set fire to the charcoal and once it's burning nicely turn on the vac cleaner -you now have a forge!
Place your sprocket on it and get it to cherry red.
Dunk it into the oil - make sure it goes straight in under the oil if you leave any bit showing the oil will catch fire.
Give the sprocket a few minutes pull it out and let it cool.
It should now be VERY hard ie can scratch glass.
You now need to temper this to a slightly less hard state, back on the BBQ 'till it turns a light straw colour and quench in water.
You how have a hardened and tempered sprocket and built yourself a forge so you can offer to make horse-shoes for the local community.
Dave