10-02-2020, 07:04 PM
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#11 (permalink)
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Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
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Quote:
Originally Posted by Piotrsko
I dunno, there's all sorts of hair splitting over in Aerodynamics
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I was pleased to see detante breaking out recently.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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Other popular topics in this forum...
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10-02-2020, 08:16 PM
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#12 (permalink)
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Master EcoModder
Join Date: Aug 2012
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It runs hot and cold.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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."We're deeply sorry." -- Pfizer
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10-02-2020, 10:43 PM
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#13 (permalink)
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Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
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Quote:
Originally Posted by freebeard
It runs hot and cold.
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Cold War never much better than the hot war for the non-aligned countries.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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10-03-2020, 05:37 PM
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#14 (permalink)
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It's all about Diesel
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
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Quote:
Originally Posted by M_a_t_t
Is it misleading to say you are an engineer if you've never had an engineering job, but have a degree?
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A licensed engineer, even though may not have actual business experience, is still an engineer. |
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The Following User Says Thank You to cRiPpLe_rOoStEr For This Useful Post:
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10-04-2020, 02:32 PM
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#15 (permalink)
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マット
Join Date: Nov 2015
Location: Indiana
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I was just getting lost in the youtubes and stumbled on this video. Didn't think it was good enough for its own thread and it has relevance here. Haven't watched any of the other videos in this series yet.
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1973 Fiat 124 Special
1975 Honda Civic CVCC 4spd
1981 Kawasaki KZ750E
1981 Kawasaki KZ650 CSR
1983 Kawasaki KZ1100-A3
1986 Nissan 300zx Turbo 5 spd
1995 Chevy Astro RWD (current project)
1995 Mercury Tracer
2017 Kawasaki VersysX 300
2022 Corolla Hatchback 6MT
https://www.youtube.com/channel/UC6s...LulDUQ8HMj5VKA
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The Following User Says Thank You to M_a_t_t For This Useful Post:
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10-06-2020, 06:22 PM
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#16 (permalink)
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Cyborg ECU
Join Date: Mar 2011
Location: Coastal Southern California
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Quote:
Originally Posted by M_a_t_t
... youtubes and stumbled on this video ...
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A lesson of the video might be that the Tesla truck might have a lot more rigidity than an F150, assuming its odd look is because it is a true "space frame" rather than a ladder frame.
__________________
See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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10-06-2020, 06:52 PM
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#17 (permalink)
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Master EcoModder
Join Date: Aug 2012
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My reading of the structure is four moncoque boxes at the corners with a Vierendeel truss on each side.
'A lot' could be an order of magnitude.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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10-07-2020, 11:21 AM
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#18 (permalink)
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Somewhat crazed
Join Date: Sep 2013
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Frame difference also, the F150 still has some frame rails
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10-08-2020, 12:50 AM
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#19 (permalink)
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It's all about Diesel
Join Date: Oct 2012
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IIRC the triangulation gives the most accurate clue about the rigidity of some structures, including vehicle frames. No wonder the Cybertruck has such odd bodystyle.
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02-17-2021, 02:34 PM
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#20 (permalink)
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Master EcoModder
Join Date: Jul 2011
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Quote:
Originally Posted by California98Civic
Here is a mechanical engineer who explains his chassis mods simply, executes them himself, and then measures their effects.
Here he is seam welding and measuring the effect A/B:
Here he is describing other chassis mods:
He should get more attention on the YouTube. |
I've seen a lot of structural modifications done to old Porsche 911's, but never some of the things he is doing. I say BRAVO, good work.
The one issue I didn't see him address is the weak spot in most cars, where the large holes in the side of the car are - called doors. Even more flex is Targa and Convertibles with no top to arch over the doors and complete a box shape.
Normally in so-called full roll cage these issues are addressed.
Falling just short of a full roll cage are rocker panel reinforcements that are often triangular in shape from foot-well zone going upward to middle part of B-pillar.
When a car "folds in half" it is the area around the doors that "give it up" and allow the occupants to be crushed. Stiffing this area stiffens the chassis considerable but comes at the cost of ease of entry and exit.
I can only guess that the author of the videos knows this and is doing modifications that allow a stock look.
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