Drilled hollow bolts and axles

All very true hobot, where did you cut and paste from?

hobot said:

Very strong materials will have low toughness, i.e. low tolerance for flaws or defects, i.e. incipient cracks.

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Yes, this is why I have always been a big proponent of crankshafts made out of lead. :lol:

Aw shoot can't even slip paraphrased technical source under your big nose Dancer. I'm waiting for cranks, shafts and fasteners made of clay and charcoal base materials. Did have to bone up a bit before drilling Peels axles and rocker spindles. My modern stuff often has dished out bolt heads but figured it was mainly to save material costs in big runs. I was put off of a quantum nuclear chemistry career when I thought of all the decades to have to use a slide rule and pencil and paper to graph the probabilities : (

Peel could lost another lb or so with many bolts drilled out but mainly thinking just the head fasteners. Peel has a theme of not appearing to use any thing but what was available or possible in the 70's era, so no Ti or C-fiber or ceramics - showing on outside. May mount a slide rule holster to confuse the newbie spanked ones even more.

Been thinking on a confusing Norton engine chopper - with 3D printed frame and parts like the craft on paper back cover of Sci Fi novels. Batman's Robin might steal it from me though.

hobot said:

Very strong materials will have low toughness, i.e. low tolerance for flaws or defects, i.e. incipient cracks.

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Yep, thats clearly why cast iron makes for a superstrong crankshaft.
Aluminium from melted down pots-n-pans would probably also qualify ?

hobot said:

Been thinking on a confusing Norton engine chopper - with 3D printed frame and parts like the craft on paper back cover of Sci Fi novels.

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Boiled up spaghetti would probably make a good frame too.
Just let it dry and harden a bit before riding it...

Well will be able to slip pasta through the holes in my leak-less printed shot up chopper tank with your name on it as the designer to blame : )

Well, we can't argue with that, can we.

How about I collect all the royalties.
And you collect all the lawsuits....

Oh ugh Rohan now ya gone disturbed my dream world, litigating against THE Beast is a far more active serious past time than my Norton time. My standing is as a King with his own court and rules and suit cases. May 15 no dr. license ticket dismissed d/t State chickening out but they are likely to do war acts against me again but I'm a man of peace surrendered to superior forces so now got to make em work out our terms of surrender and international treaty for safe passage. Fun fun fun till daddy takes the T-Bird away. This affects my ability to qualify for a race license so the game is a foot and Commando Crapola banter helps me unwind. Its tricky when ya corner a judge doing executive branch duties against his oath so throws ya in jail - where I realized I had to re-design Peel sealed oil system for nose down feeding besides the wheelies and sideways stuff.

Btw ceramic is made form fine clays, graphite and carbon fiber and diamond can be made from soot.

Does this make em stronger or tougher per mass/dia?
[video]http://www.youtube.com/watch?v=IEsTD8CJzAg[/video]

The ceramic bores in one of my engines were electrodeposited.
A " lipophilic nickel matrix silicon carbide".
So ceramic comes in many varieties. ?
A bit of treatment required after it came out of the ground though !
It certainly is tough - can still see the cross-hatch marks after plenty and plenty of miles.

Always wondered how it would go in the bores of a Commando - if it can be applied to cast iron ??

There are some fantastic material innovations coming online that will change the world of mechanics and construction. Maybe someday a clever soul will print out a Commando engine in ceramics and the frame in epoxy graphite embedded with contractile fibers so active road conformation that stifles upsets and fasteners that are like welds until a proper current polarity induced then just evaporate into nice smelling safe gases and inert dust. I'd like to put some radioactive elements in the combustion chamber surfaces to help ionized the reactants for faster burn. Ceramic engines could put out mo power on just air coolling.

Rohan said:

The ceramic bores in one of my engines were electrodeposited.
A " lipophilic nickel matrix silicon carbide".
So ceramic comes in many varieties. ?
A bit of treatment required after it came out of the ground though !
It certainly is tough - can still see the cross-hatch marks after plenty and plenty of miles.

Always wondered how it would go in the bores of a Commando - if it can be applied to cast iron ??

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I highly recommend these folks. They helped me (and many other racers) with some very serious cylinder wear problems. They us a mechanical infusion process so it is really not a coating but a surface enhancement by embedment.

http://bore-tech.com/Carbide Bore Process

They can do stock barrels and did the sleeved Steve Maney barrels for a few of my bikes.