In a message dated 04/21/2007 1:38:10 AM Central Daylight Time, billb@bnj.com
writes:
> My MV Agusta Senna has titanium rods, piston pins and crank pin. Beautiful
> parts. The motor revs to 13,500 RPM and makes 142 HP from 750 cc. I wouldn't
> mind that kind of performance in my TR3, Peyote would be darned sprightly
> with 400+ horsepower, though I suspect the four radially displaced titanium
> valves and the fuel injection contribute more to the performance than the
>rods.
> What a motor though. I can pick it up by myself. The whole bike weighs 413
> pounds--about the same as a TR3 motor. The valve springs and retainers are
> absolutely gorgeous. Most of the bits inside look like jewelry.
>
> An interesting side note, an engineer told me that the titanium alloys used
> in motorsports don't lend themselves to crack checking because most cracks
> propagate beneath the surface and don't propagate slowly like steel can. It's
> either good, or it's gone.
>
l3,500 rpms...at what point does our block become the next weak link in the
chain?
Bill Dentinger
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