C8.R Revving. And losing revs very, very quickly.

"gmctavish needs more space" (gmctavish) 10/08/2019 at 00:50 • Filed to: Corvette

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CarsofFortLangley - Oppo Forever > gmctavish needs more space 10/08/2019 at 01:00

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That's really weird

BvdV - The Dutch Engineer > gmctavish needs more space 10/08/2019 at 01:06

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That sounds almost generated, a bit Gran Turismo 4 like.

I’m not fully aware of GTLM/IMSA rules, but maybe this is the result of running a  very low rotational mass engine, with some sort of flywheel energy harvesting device (so a mild hybrid maybe?)

gmctavish needs more space > BvdV - The Dutch Engineer 10/08/2019 at 01:07

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I’m not either, but that sounds really plausible 

gmctavish needs more space > CarsofFortLangley - Oppo Forever 10/08/2019 at 01:07

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Yeah it’s a bit jarring 

ItalianJobR53 - now with added 'MERICA and unreliability > BvdV - The Dutch Engineer 10/08/2019 at 01:19

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Dont think any hybrid systems are allowed this year in the GT categories...

Nick Has an Exocet > gmctavish needs more space 10/08/2019 at 01:20

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I’m good with it. My guess is that’s about 1/3 revs. They aren’t going to dry rev a race engine to the red line and we’re probably talking about an exotic transmission here with almost 0 flywheel mass.

atfsgeoff > gmctavish needs more space 10/08/2019 at 01:21

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flat plane crank with an ultra-light flywheel

DipodomysDeserti > Nick Has an Exocet 10/08/2019 at 02:08

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Readin g the headline, I was expecting that someone had a hold my beer moment and grenaded a cold engine.

BvdV - The Dutch Engineer > ItalianJobR53 - now with added 'MERICA and unreliability 10/08/2019 at 04:20

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Interesting. Also no mild hybrid? Because moving to 48V is starting to become more commonplace in production cars, and would make a lot of sense with endurance racers (high power star ter, using energy recuperated when slowing into the pits)

nerd_racing > gmctavish needs more space 10/08/2019 at 07:17

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running up the revs in neutral with no transmission rotational mass and no road load will cause this sort of thing.  I do love how radical of a departure this engine is from the C7.R. 

ItalianJobR53 - now with added 'MERICA and unreliability > BvdV - The Dutch Engineer 10/08/2019 at 08:09

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No hybrids at all. The reason is that the race car should be based on the street car. So if the street car has no hybrid, then the racecar won’t either. 

Danimalk - Drives a Slow Car Fast > gmctavish needs more space 10/08/2019 at 09:01

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Race engines can do that

gmctavish needs more space > Danimalk - Drives a Slow Car Fast 10/08/2019 at 10:11

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I mean I’d expect it from a n F1 engine, but it’s not what I associate with a Corvette

Biggus Dickus (RevsBro) > nerd_racing 10/08/2019 at 11:41

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Sounds nothing like the C7Rs did. Sounds much more like the 458 GTLM cars. 

SnapUndersteer, Italian Spiderman > gmctavish needs more space 10/08/2019 at 12:59

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Light flywheels do that for race cars. It’s very normal

nerd_racing > Biggus Dickus (RevsBro) 10/08/2019 at 13:32

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I know exactly why it doesn’t sound like the C7.R.  And I love it for that reason.