Neat! (machining vid)

[HenryDorsetCase]

I love stuff like that.

I did a couple of courses many years ago on stick welding and had a crack on a MIG too.

I even have a little one in the shed but the thing with welding is that it is much an art as a skill. At some level you have to have the touch, and you have to do a lot of it to do really good work especially in TIG. I've watched videos of a lot of Titanium bicycle frames being made. It looks so easy. It probably is if you have done nothing but that 50 hours a week for 20 years.....

I mean, I could probably sparrowcraft something together and it might hold for a bit, as long as you looked at it from ten feet away it would be great.

[youtube]4tt5ZxrCwc0[/youtube]

[Flip]

The last crankshaft I made was for a Austin7 racing car and it took me 60 hours machining to get it out of a 150mm dia by 500mm long billet of EN24 steel.

One of those CNC machines would have been nice to have.

The steel being machined did look very easy to machine fast.

[Crasherfromwayback]

Salubrious.

[bogan]

Wirecutting still has a place in the modern world it seems...

[unstuck]

Wirecutting still has a place in the modern world it seems...

Yep, still use a wire saw to cut pvc pipe on the water schemes I do. Hard to get a saw in some of those trenches.

[oldrider]

The last crankshaft I made was for a Austin7 racing car and it took me 60 hours machining to get it out of a 150mm dia by 500mm long billet of EN24 steel.

Two bearing or three?

[Flip]

Two.

[buggerit]

Check out wire EDM, cool!

[Ocean1]

Wirecutting still has a place in the modern world it seems...

Never played with one, let alone a big fuckoff masonry job.

Bloody cool toy though.

[speights_bud]

I wonder how much of the $25M I'm winning this weekend that set up would cost.

Cost my old boss just shy of $1m to set up the Okuma 5 axis twin spindle turn mill that we made a few Billet cranks on. Greg Percival's R6/R4 destroke crank was made on it.

[Drew]

Cost my old boss just shy of $1m to set up the Okuma 5 axis twin spindle turn mill that we made a few Billet cranks on. Greg Percival's R6/R4 destroke crank was made on it.

He's gone with running a triple now though hasn't he? Are you guys doing his crank work for that?

[speights_bud]

He's gone with running a triple now though hasn't he? Are you guys doing his crank work for that?

Yea pretty sure he flicked the stroked bike a couple of years ago, have heard he went down the triple track, we weren't involved with the building of any bikes, just the design and machining of the cranks etc that the customers want. I left that company 2 1/2 years ago (got sick of the internal politics) so not sure if they are doing more for him or not.

[Mental Trousers]

Greg went to a triple and pulled the piston and conrod, replacing them with a weight on the crank. He's had all sorts of issues with the bike, mainly cos it's an experiment/toy. He built one for Nigel Lennox and that's been a hell of a lot more reliable, except for losing a bearing shell at one stage. Haven't seen Nigel recently though and now Greg is far too busy to bugger about with bikes.

[Drew]

Greg went to a triple and pulled the piston and conrod, replacing them with a weight on the crank. He's had all sorts of issues with the bike, mainly cos it's an experiment/toy. He built one for Nigel Lennox and that's been a hell of a lot more reliable, except for losing a bearing shell at one stage. Haven't seen Nigel recently though and now Greg is far too busy to bugger about with bikes.

I was talking to a chap that knows him, I think he had massive balance issues because the weighted crank doesn't act the same as a rod and slug as the revs climb.

Pity it's not still being developed.

[Flip]

Two.

Its in this....