What determines MAX RPM

[beemerdons]

The engine will be designed run at full specifications for 100,000 miles.

Is that 100,000 miles between oil changes or.......... ?

Don

The engine will be designed to run at full specifications for 100,000 miles.

Is that 100,000 miles between oil changes or.......... ?

Don

Oh just great Don, this very mention of oil will send RadioHowie's thread straight to NEPRT. Of course, usually when Iggy sees anything, and I do mean anything, by RH he switches it over onto the track heading directly to NEPRT! Smart Man, That Matt!

 

[Bounce]

Does a manufacturer design its engine for a specific Max RPM, or do they build what they want, run it on a dyno till it 'splodes, then put the redline 1k under the 'splode point?

Mfgrs build to a target market. That includes price. Given the constraints of cost, etc., the engineers then have their limitations defined as to how precise and exotic they can be in their build. The tighter the budget the greater the tolerances, less precise the balance, etc. All that trends RPM downward.

As part of that process, they look up the requisite, "Feck! My machine basploded!" numbers in the engineering reference tables, subtract 100, and plug it into the rev limiter.

The old trackside wisdom of, "how fast can you afford to go", still reigns supreme.

 

[FJR Flyer]

Physics.

Physics, scmysics, that's all theoretical. Engineering is how you apply it and make it work in the real world. :closedeyes:

 

[RadioHowie]

This is an overview of a design process. In spite of the length of this, it is just an overview leaving out many things.

[sNIPPAGE]

In 6 months of testing and a number of design and material changes the engine is certified.

You have just GOT to love this guy! Thanks, Alan....you're the best!

 

[yamafitter]

Physics.

Physics, scmysics, that's all theoretical. Engineering is how you apply it and make it work in the real world. :closedeyes:

As a technologist I got stuck with the ******* engineer's drawings. After scratching my head trying to figure out what the clown was trying to build I would throw them away and make something that actually could do the job.

 

[beemerdons]

Physics.

Physics, scmysics, that's all theoretical. Engineering is how you apply it and make it work in the real world. :closedeyes:

As a technologist I got stuck with the ******* engineer's drawings. After scratching my head trying to figure out what the clown was trying to build I would throw them away and make something that actually could do the job.

Pipefitter Rule Number One: Shoot the Fecking Engineer, then you can finally get the Son of a Bitch built!

 

[IBF2]

Physics.

Physics, scmysics, that's all theoretical. Engineering is how you apply it and make it work in the real world. :closedeyes:

As a technologist I got stuck with the ******* engineer's drawings. After scratching my head trying to figure out what the clown was trying to build I would throw them away and make something that actually could do the job.

Pipefitter Rule Number One: Shoot the Fecking Engineer, then you can finally get the Son of a Bitch built!

Better yet, make the engineers work on/with what they design, PAYBACKS Baby!!!! :yahoo:

 

[Bustanut joker]

Now why you Klowns wanna shoot some poor bastage driving a train? :blink: Dinkwhistlers.

 

[beemerdons]

Now why you Klowns wanna shoot some poor bastage driving a train? :blink: Dinkwhistlers.

MAXIMUM ALTITUDE SICKNESS!

 

[RaYzerman19]

wfooshee and ionbeam have no clue......... here's the real story. Even beemerdons might get it.

 

[beemerdons]

Got It, Ray!

 

[exskibum]

What Howie failed to ask, but really wants to know is whether there's a way to make that loud assed V-Twin Ditch Pump blow up when its pirate captain revs it. Seems like some kind of penetrating heat ray that would quickly weaken the valve springs would be the best bet. If someone figures out how to build one economically enough, I'm sure a number of us would line up to buy one for similar situations.

Better yet, make the engineers work on/with what they design, PAYBACKS Baby!!!! :yahoo:

I worked in a gas station at 19 for a 50-something owner/mechanic who'd spent his life as a mechanic (from cars to heavy equipment). Mike would always ask if you'd ever done whatever wrenching task might be in for his repair, and then patiently take you through the whole process as he did it. I remember him as one of the very best bosses I ever had, and still grin at the recollection of him regularly cursing automotive engineers for placing ease of maintenance at the bottom of the design priority list: "The sons-a-******* who designed this thing oughta be castrated so that their sons and daughters can't do the same thing!" :lol: :lol:

 

[James Burleigh]

What determines maximum RPM? Isn't it the size of the squirrels?

 

[ionbeam]

What determines maximum RPM? Isn't it the size of the squirrels?

It's actually how good the guy is with the whip.