New Videos

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johnny comelately
johnny comelately
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Go Mario

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Zynerji
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johnny comelately wrote:
Sat Oct 15, 2022 9:40 pm
Go Mario
McLaren-Andretti confirmed! 😂

johnny comelately
johnny comelately
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Re: New Videos

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How good is this
At first I thought that there was a problem with the TV aspect ratio...
The wet drys and the howwwl...

johnny comelately
johnny comelately
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Another stroll down nostalgia alley.
Isky cams founder Ed Iskendarian still percolating at 101.
This guy was responsible for the development of the most potent cam grinds.
Between him and Yoshimura their contribution to race engine performance was integral to where it is today.
The shop where I worked used his stuff to win so many races in the 70's.
So here is a little history...


johnny comelately
johnny comelately
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Even further back...
"At the beginning of 1909, engineer Julius Ganss was given permission to design a car which could reach a speed of over 200 km/h. Initially Carl Benz was against the project, failing to see the relevance of building a land speed record car when the aim of his company was to build robust and reliable touring cars. But then his attitude changed and he came to the conclusion that the company couldn't ignore the tricks of modern market mechanisms.

Based on the 1908 Benz 150HP racer, the four-cylinder engine was bored out from 15.1-litres to 21.5-litres with an output of 184 hp at 1,500 rpm, which was later increased to 200 hp at 1600 rpm after some development. It was the largest-displacement engine ever to be used in a racing or record car produced by Benz and its weight was 407 kg (the car's total weight was 1,450kg). The development and the task of competing with this monster were assigned to Victor Hémery e Victor Demogeot. ..."


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Andres125sx
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johnny comelately wrote:
Fri Oct 28, 2022 6:12 pm
Even further back...
"At the beginning of 1909, engineer Julius Ganss was given permission to design a car which could reach a speed of over 200 km/h. Initially Carl Benz was against the project, failing to see the relevance of building a land speed record car when the aim of his company was to build robust and reliable touring cars. But then his attitude changed and he came to the conclusion that the company couldn't ignore the tricks of modern market mechanisms.

Based on the 1908 Benz 150HP racer, the four-cylinder engine was bored out from 15.1-litres to 21.5-litres with an output of 184 hp at 1,500 rpm, which was later increased to 200 hp at 1600 rpm after some development. It was the largest-displacement engine ever to be used in a racing or record car produced by Benz and its weight was 407 kg (the car's total weight was 1,450kg). The development and the task of competing with this monster were assigned to Victor Hémery e Victor Demogeot. ..."


21.5 litre engine? Wow
Max power at 1500-1600rmp? That must have some torque

The whole car has some serious movement when accelerating still, hitting the throttle mid-corner should be interesting :o

johnny comelately
johnny comelately
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The Porsche Historic racing division do a stupendous job at restoring their cars.
About 6 years ago they restored one of Sefan Bellof's Rothman's cars, from memory a 956, to perfection.
https://en.wikipedia.org/wiki/Stefan_Bellof
https://en.wikipedia.org/wiki/Porsche_956
But apart from all this of course Mark Donohue and Mr Penske had other less than optimal experiences with Porsche and their Can Am cars. They did most of their very effective chassis testing on a simple skid pad, a far cry from todays data driven behemoth.
I would have to recomend the book "The Unfair Advantage" by Mark Donohue.


F1Supporter
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Re: New Videos

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johnny comelately wrote:
Mon Oct 31, 2022 12:21 pm
The Porsche Historic racing division do a stupendous job at restoring their cars.
About 6 years ago they restored one of Sefan Bellof's Rothman's cars, from memory a 956, to perfection.
https://en.wikipedia.org/wiki/Stefan_Bellof
https://en.wikipedia.org/wiki/Porsche_956
But apart from all this of course Mark Donohue and Mr Penske had other less than optimal experiences with Porsche and their Can Am cars. They did most of their very effective chassis testing on a simple skid pad, a far cry from todays data driven behemoth.
I would have to recomend the book "The Unfair Advantage" by Mark Donohue.

awesome video, thanks for sharing

johnny comelately
johnny comelately
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Only half :wink: the usual story but fascinating all the same partic if you remember Malcolm Smith, maybe from the movie On Any Sunday.
https://en.wikipedia.org/wiki/Malcolm_S ... orcyclist)

johnny comelately
johnny comelately
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Re: New Videos

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Nige !
at Churchill Engineering College, Cambridge - the former Williams/Ferrari/McLaren engineer, John Sutton explains...

the mapping blindspot

MadMax
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Andres125sx wrote:
Sat Oct 29, 2022 12:25 pm


21.5 litre engine? Wow
Max power at 1500-1600rmp? That must have some torque
About 900Nm for 200hp at 1600rpm. Sort of thing decent modern high-performance engines do in a much smaller package. They also make twice the power (or more), but that's progress for you. =D>

Bentayga 6.0 W12 makes over 600hp at 5000rpm along with making 900Nm at 1350rpm. Twin turbos help, of course.

Many modern engines are mapped to limit torque to keep the gearbox happy - 700Nm is a common figure as many such cars use a version of the popular 8-speed ZF automatic gearbox. The engines could make much more torque if given free rein.

johnny comelately
johnny comelately
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Sans engine

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Andres125sx
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johnny comelately wrote:
Fri Nov 11, 2022 11:53 am
Sans engine
But two enormous balls!! :shock: =D> =D> =D> =D>

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etusch
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johnny comelately
johnny comelately
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Good video Etusch, that company explains everything.
The interesting and complex thing is resins.
(and Toprak wins in Mandalika today)