Neat! (machining vid)

[bogan]

<iframe width="420" height="315" src="//www.youtube.com/embed/81UjjSH2iFw" frameborder="0" allowfullscreen></iframe>

Fucking nice bit of kit!

[unstuck]

I love watching stuff like that.:headbang::headbang:

[Laava]

Cool! "..................

[Geeen]

Very very cool...:niceone:

[R650R]

Excellent find.

[Ocean1]

Anyone up to explaining that split #4 bigend journal?

[SMOKEU]

They can afford equipment like that, but not a decent camera...

[Mental Trousers]

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

[AllanB]

Impressive. Surprised at the speed it does the threads.

[swarfie]

Impressive. Surprised at the speed it does the threads.

The Mazak CNC machining centre I program and run taps holes in tool steel at 12 metres a minute, and 20 metres a minute in ali tooling plate (which is harder than mild steel). Was scary when I first started doing it :facepalm: but seems slow now.

[Laava]

Anyone up to explaining that split #4 bigend journal?

Yep.
Perplexing is what it is.

[Woodman]

Anyone up to explaining that split #4 bigend journal?

Was wondering the same thing.

Edit. its a 6 cylinder crank. one offset bigend journal. One dual big end like a common yank v8, and two single bigends . Odd.

[skippa1]

Fucking nice bit of kit!
That is fuckin sweet......engineering has come such a long way since I did an apprenticeship

[The Reibz]

Some of those cuts were seriously deep. I think I found what I want for Xmas...

Thanks for sharing

[Akzle]

akzle misses out on video.
But check out 5 axis live tooling shit. Theres a hand carved at about 4billion rpm and a twisty metal thing about 4 ft high. No vido, find your own links.

[ducatilover]

http://forums.rennlist.com/rennforums/attachments/997-gt2-gt3-forum/614838d1331333099-sharkwerks-or-any-3-9-4-0-conversion-owners-evoms_billet_porsche_crankshaft_1.jpgwill it make me one of these :devil2:

Fuckin' cool machine!

[oldrider]

Impressive but man alive that makes me feel soooo out of date (I "was" a fitter turner welder once upon a time!) ... obviously time to die! :soon: . :bye:

[Akzle]

Impressive but man alive that makes me feel soooo out of date (I "was" a fitter turner welder once upon a time!) ... obviously time to die! :soon: . :bye:

no gears on my lathe. Six speed variable drive... Depending how fast i whip the donkey around the mill pole...

[jonbuoy]

Anyone up to explaining that split #4 bigend journal?

Maybe its just a demonstration showing what it can do or a test crank for checking clearances on different stroke/rod combos?

[bogan]

<iframe width="420" height="315" src="//www.youtube.com/embed/ADqDMwQOc2w" frameborder="0" allowfullscreen></iframe>

Also neat...

[oldrider]

To think how far backwards a stupid all out nuclear world war could drive society and all of the wonderful technical expertise that could be lost!

That machinery/machining is nothing less than extraordinarily beautiful ... real art! :first: .. Orgasmic even! :love:

[unstuck]

That machinery/machining is nothing less than extraordinarily beautiful ... real art! :first: .. Orgasmic even! :love:

Phew, Im not the only sick fucker around here.:whistle:

[Geeen]

You are sooooo lucky our tablet is waterproof! So so cool!

[oldrider]

Phew, Im not the only sick fucker around here.:whistle:

You're onto it! :lol:

[ducatilover]

I'll knock one up on the drill mill we just got?

[Swoop]

Another nice machine...

http://www.wimp.com/cleverchainsaw/

[unstuck]

That is pretty clever, :niceone:

[R650R]

Cool stuff. Engineering related but not quite in the same league I like watching some of this guys welding vids.
The polytech courses seem damn expensive for hobby/diy level, is this something you can self teach/read books etc or do you really need to learn from a pro???
Not that I've got space or money for a decent welder anyway :)


http://youtu.be/WSnj8AASuFs

[Akzle]

Cool stuff. Engineering related but not quite in the same league I like watching some of this guys welding vids.
The polytech courses seem damn expensive for hobby/diy level, is this something you can self teach/read books etc or do you really need to learn from a pro???
Not that I've got space or money for a decent welder anyway :)


http://youtu.be/WSnj8AASuFs

fuck a decent welder. A couple hundy buck arc welder will handle any shit youre likely to do. Except stainless and ally. For which god invented gas torches.

[Ocean1]

Sometimes the simplest ideas are the best ones eh?

[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.

4tt5ZxrCwc0

[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]

<iframe src="//player.vimeo.com/video/94076571" width="500" height="281" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>

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.:niceone:

[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....

[Mental Trousers]

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.

Yeah he did. Things like the crank wobbling so much it took out the crank sensor, it cracked the cases, snapped a bolt holding the balance weight together and other stuff.

I don't think it's the way to go though. If you want to get rid of the piston and conrod you should really make a custom crank and cam shafts to suit 3 cylinders.

Something along the lines of how Ducati did the Supermono would be the go, ie pull the piston and replace it with a lever

296383

Even the way BMW have done it with the F800 would be good

296385

[Geeen]

http://www.liveleak.com/view?i=17e_1403848125