david-grimshaw
David Grimshaw
david-grimshaw

“the thing I don’t know anything about must not exist because I know nothing about it” Read more

Y’know...if we collectively agree to stop giving these miserable fuckwits the attention they so goddamned desperately, pitifully claw at, they’ll eventually just go away and be forgotten like they should be. Read more

Powerful interests who have the ear of a lawmaker who’s a caucus leader or committee chairman can stop a bill with a phone call. Read more

This was great! Start to finish; word for word. Read more

Great stuff, i guess one issue was that VVT on a single cylinder is one thing but as you add more it gets N times more complicated to achieve.    Read more

Great article! Well researched & written, on an interesting topic. Pretty awesome tech for the time too. Cadillac has done a lot of great things over the years. Now if they would just get around to actually putting out any electrics like they keep promising...
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It is pretty sad how GM mismanaged a pretty iconic brand the past few decades but some of it is just perception. They’ve had some duds, believe me I know. At the same time there’s also a lot of things they’ve done right, at least in my 35 years on this planet, that kept me endeared to them. I also kind of like Read more

Great article, thank you!

I didn’t know that either. I was aware of Bush and heard he was ahead of his time but had no idea he basically invented two pretty “modern” systems like these. I wonder what made him abandon the oil governed system? Looks like I have some reading to do. Read more

I believe my generator uses a mixing valve like this one. It’s propane powered.

Good story. The variable intake valve reminds me more of BMW’s throttle-less intakes than vtec. Read more

Compression ratios were very low then, making pumping losses less than you'd expect. Also likely the only way to get meaningful vacuum with ring seal of maybe. Read more

It’s really great work— especially since it touches on Henry Ford’s abject failure before his vast success before his half-vast failure in his closing years. Read more

Worth noting that the “increase in differential pressure” across the air metering flap during the vacuum pulled in the intake cycle is the “analog computer” element to roughly meter fuel in CIS. Read more

A very long time ago the tag line for Cadillac was “Standard of the World” and the two motivators for that was that they introduced interchangeable parts and also the now common layout of clutch on the left, throttle on the right and brake in the middle. Read more

The “mixing valve” sounds a lot like an SU Carb (minus the throttle butterfly).
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I rarely go a day without learning something on Jalopnik, but reading that was an enrichening experience. Thank you.
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my horseless carriage’s variable valve timing mechanism has been engaged, yo.” Read more