So the bizarre thing about the MV is that it's a street bike. The
engine is expected to last more than 100,000 miles, and a few of the
Brutales (naked bike version) are approaching that mileage without
major mechanical failure. My Senna will not have more than 10,000
miles on the odo if I continue to own it. After 200 miles in the
saddle I need help getting off the bike. The most fiendish ergonomics
since the Iron Maiden.
Bill Babcock
billb@bnj.com
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On Apr 21, 2007, at 7:47 AM, Terry Stetler wrote:
> Current Formula 1 V8s are turning 20,000 rpm for qualifying, and
> 19,000rpm during the race.
>
> Back when they were "only" turning 15,000 to 16,000 Ferrari's block
> service life was 1000km, at which point they were changed out. The
> culprit? Sonically induced microfracturing.
>
> Isn't technology grand?
>
> Terry Stetler
> ----- Original Message -----
> From: BillDentin@aol.com
> To: billb@bnj.com ; tlizzard@msn.com
> Cc: 58tr3a@videotron.ca ; henry@henryfrye.com ; fot@autox.team.net
> Sent: Saturday, April 21, 2007 10:23 AM
> Subject: Re: [Fot] titanium rods
>
> 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
>
>
>
> **************************************
> See what's free at http://www.aol.com.
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